./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe003_power.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-nonrel/safe003_power.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe003_power.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe003_power.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:53:20,557 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:53:20,620 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:53:20,624 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:53:20,625 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:53:20,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:53:20,653 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:53:20,654 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:53:20,654 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:53:20,657 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:53:20,658 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:53:20,658 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:53:20,659 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:53:20,660 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:53:20,660 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:53:20,660 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:53:20,660 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:53:20,661 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:53:20,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:53:20,661 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:53:20,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:53:20,662 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:53:20,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:53:20,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:53:20,662 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:53:20,663 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:53:20,663 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:53:20,663 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:53:20,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:53:20,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:53:20,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:53:20,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:53:20,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:53:20,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:53:20,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:53:20,666 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:53:20,666 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:53:20,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:53:20,666 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:53:20,666 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:53:20,666 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:53:20,667 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:53:20,667 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:53:20,667 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:53:20,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:53:20,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:53:20,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:53:20,918 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:53:20,919 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:53:20,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_power.opt.i [2024-06-28 01:53:21,916 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:53:22,104 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:53:22,105 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_power.opt.i [2024-06-28 01:53:22,118 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f4207ab5/4f228d316024477c8f025a60476bbe05/FLAG1f9d80724 [2024-06-28 01:53:22,128 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f4207ab5/4f228d316024477c8f025a60476bbe05 [2024-06-28 01:53:22,130 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:53:22,130 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:53:22,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe003_power.opt.yml/witness.yml [2024-06-28 01:53:22,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:53:22,328 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:53:22,331 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:53:22,331 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:53:22,334 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:53:22,335 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:53:22" (1/2) ... [2024-06-28 01:53:22,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@189a3b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:22, skipping insertion in model container [2024-06-28 01:53:22,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:53:22" (1/2) ... [2024-06-28 01:53:22,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@31927119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:22, skipping insertion in model container [2024-06-28 01:53:22,338 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:53:22" (2/2) ... [2024-06-28 01:53:22,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@189a3b5b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:22, skipping insertion in model container [2024-06-28 01:53:22,339 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:53:22" (2/2) ... [2024-06-28 01:53:22,339 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:53:22,456 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:53:22,457 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] ((((((((((((((((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && __unbuffered_p1_EAX$mem_tmp == 0) && __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p1_EAX$w_buff0 == 0) && __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p1_EAX$w_buff1 == 0) && __unbuffered_p1_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1)) [2024-06-28 01:53:22,458 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] ((((((((((((((((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && __unbuffered_p1_EAX$mem_tmp == 0) && __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p1_EAX$w_buff0 == 0) && __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p1_EAX$w_buff1 == 0) && __unbuffered_p1_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1)) [2024-06-28 01:53:22,458 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] ((((((((((((((((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && __unbuffered_p1_EAX$mem_tmp == 0) && __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p1_EAX$w_buff0 == 0) && __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p1_EAX$w_buff1 == 0) && __unbuffered_p1_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1)) [2024-06-28 01:53:22,458 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:53:22,458 INFO L106 edCorrectnessWitness]: ghost_update [L854-L854] multithreaded = 1; [2024-06-28 01:53:22,495 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:53:22,626 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/safe003_power.opt.i[951,964] [2024-06-28 01:53:22,777 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:53:22,784 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:53:22,811 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/safe003_power.opt.i[951,964] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:53:22,917 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:53:22,955 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:53:22,956 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:22 WrapperNode [2024-06-28 01:53:22,956 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:53:22,957 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:53:22,957 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:53:22,957 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:53:22,962 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 28.06 01:53:22" (1/1) ... [2024-06-28 01:53:22,990 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 28.06 01:53:22" (1/1) ... [2024-06-28 01:53:23,020 INFO L138 Inliner]: procedures = 175, calls = 85, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 250 [2024-06-28 01:53:23,021 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:53:23,022 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:53:23,022 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:53:23,022 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:53:23,030 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:22" (1/1) ... [2024-06-28 01:53:23,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:22" (1/1) ... [2024-06-28 01:53:23,034 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:22" (1/1) ... [2024-06-28 01:53:23,062 INFO L175 MemorySlicer]: Split 44 memory accesses to 2 slices as follows [2, 42]. 95 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 6 writes are split as follows [0, 6]. [2024-06-28 01:53:23,063 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:22" (1/1) ... [2024-06-28 01:53:23,063 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:22" (1/1) ... [2024-06-28 01:53:23,076 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:22" (1/1) ... [2024-06-28 01:53:23,078 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:22" (1/1) ... [2024-06-28 01:53:23,080 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:22" (1/1) ... [2024-06-28 01:53:23,082 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:22" (1/1) ... [2024-06-28 01:53:23,086 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:53:23,087 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:53:23,087 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:53:23,087 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:53:23,088 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:22" (1/1) ... [2024-06-28 01:53:23,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:53:23,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:53:23,115 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) [2024-06-28 01:53:23,136 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 [2024-06-28 01:53:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 01:53:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 01:53:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 01:53:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 01:53:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:53:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:53:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:53:23,148 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:53:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:53:23,149 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:53:23,149 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:53:23,149 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:53:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:53:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:53:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:53:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:53:23,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:53:23,153 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:53:23,296 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:53:23,297 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:53:23,787 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:53:23,787 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:53:24,151 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:53:24,151 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:53:24,151 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:53:24 BoogieIcfgContainer [2024-06-28 01:53:24,152 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:53:24,153 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:53:24,153 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:53:24,156 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:53:24,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:53:22" (1/4) ... [2024-06-28 01:53:24,156 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f2c818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:53:24, skipping insertion in model container [2024-06-28 01:53:24,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:53:22" (2/4) ... [2024-06-28 01:53:24,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f2c818 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:53:24, skipping insertion in model container [2024-06-28 01:53:24,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:22" (3/4) ... [2024-06-28 01:53:24,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f2c818 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:53:24, skipping insertion in model container [2024-06-28 01:53:24,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:53:24" (4/4) ... [2024-06-28 01:53:24,158 INFO L112 eAbstractionObserver]: Analyzing ICFG safe003_power.opt.i [2024-06-28 01:53:24,173 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:53:24,173 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:53:24,173 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:53:24,225 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:53:24,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:53:24,271 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-28 01:53:24,272 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:53:24,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-28 01:53:24,276 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:53:24,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-28 01:53:24,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:53:24,347 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;@59b96e32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:53:24,347 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:53:24,352 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:53:24,352 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:53:24,352 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:53:24,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:24,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:53:24,354 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:24,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:24,358 INFO L85 PathProgramCache]: Analyzing trace with hash 831108142, now seen corresponding path program 1 times [2024-06-28 01:53:24,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:24,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960862184] [2024-06-28 01:53:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:24,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:25,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:25,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:25,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960862184] [2024-06-28 01:53:25,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960862184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:25,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:25,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:53:25,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506417056] [2024-06-28 01:53:25,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:25,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:53:25,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:26,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:53:26,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:53:26,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:53:26,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:26,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:26,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:53:26,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:27,243 INFO L124 PetriNetUnfolderBase]: 4309/6741 cut-off events. [2024-06-28 01:53:27,243 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-06-28 01:53:27,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13077 conditions, 6741 events. 4309/6741 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 40284 event pairs, 2999 based on Foata normal form. 168/6243 useless extension candidates. Maximal degree in co-relation 13065. Up to 6206 conditions per place. [2024-06-28 01:53:27,278 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 48 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2024-06-28 01:53:27,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 245 flow [2024-06-28 01:53:27,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:53:27,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:53:27,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-06-28 01:53:27,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-06-28 01:53:27,290 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 93 transitions. [2024-06-28 01:53:27,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 245 flow [2024-06-28 01:53:27,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 240 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:53:27,297 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-28 01:53:27,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-28 01:53:27,302 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:53:27,302 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-28 01:53:27,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:27,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:27,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-28 01:53:27,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:53:27,304 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:27,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:27,305 INFO L85 PathProgramCache]: Analyzing trace with hash -5407962, now seen corresponding path program 1 times [2024-06-28 01:53:27,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:27,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605644229] [2024-06-28 01:53:27,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:27,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:27,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:27,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605644229] [2024-06-28 01:53:27,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605644229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:27,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:27,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:53:27,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147333598] [2024-06-28 01:53:27,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:27,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:53:27,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:27,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:53:27,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:53:27,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-28 01:53:27,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:27,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:27,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-28 01:53:27,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:28,062 INFO L124 PetriNetUnfolderBase]: 1734/2898 cut-off events. [2024-06-28 01:53:28,063 INFO L125 PetriNetUnfolderBase]: For 361/376 co-relation queries the response was YES. [2024-06-28 01:53:28,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6021 conditions, 2898 events. 1734/2898 cut-off events. For 361/376 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 19009 event pairs, 485 based on Foata normal form. 4/2747 useless extension candidates. Maximal degree in co-relation 6009. Up to 1794 conditions per place. [2024-06-28 01:53:28,076 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 52 selfloop transitions, 2 changer transitions 1/71 dead transitions. [2024-06-28 01:53:28,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 71 transitions, 301 flow [2024-06-28 01:53:28,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:53:28,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:53:28,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-06-28 01:53:28,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-06-28 01:53:28,079 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 3 states and 105 transitions. [2024-06-28 01:53:28,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 71 transitions, 301 flow [2024-06-28 01:53:28,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 71 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:53:28,082 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 128 flow [2024-06-28 01:53:28,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-28 01:53:28,084 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:53:28,085 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 128 flow [2024-06-28 01:53:28,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:28,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:28,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:28,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:53:28,090 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:28,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:28,091 INFO L85 PathProgramCache]: Analyzing trace with hash -167647409, now seen corresponding path program 1 times [2024-06-28 01:53:28,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:28,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59080027] [2024-06-28 01:53:28,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:28,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:29,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:29,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:29,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59080027] [2024-06-28 01:53:29,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59080027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:29,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:29,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:53:29,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886324580] [2024-06-28 01:53:29,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:29,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:53:29,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:29,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:53:29,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:53:29,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:53:29,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:29,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:29,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:53:29,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:30,489 INFO L124 PetriNetUnfolderBase]: 5489/8503 cut-off events. [2024-06-28 01:53:30,490 INFO L125 PetriNetUnfolderBase]: For 1384/1384 co-relation queries the response was YES. [2024-06-28 01:53:30,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18434 conditions, 8503 events. 5489/8503 cut-off events. For 1384/1384 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 50097 event pairs, 3389 based on Foata normal form. 3/8288 useless extension candidates. Maximal degree in co-relation 18421. Up to 7810 conditions per place. [2024-06-28 01:53:30,531 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 64 selfloop transitions, 9 changer transitions 1/81 dead transitions. [2024-06-28 01:53:30,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 81 transitions, 364 flow [2024-06-28 01:53:30,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:53:30,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:53:30,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-06-28 01:53:30,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5885416666666666 [2024-06-28 01:53:30,533 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 128 flow. Second operand 4 states and 113 transitions. [2024-06-28 01:53:30,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 81 transitions, 364 flow [2024-06-28 01:53:30,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 81 transitions, 358 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:53:30,538 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 196 flow [2024-06-28 01:53:30,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-06-28 01:53:30,540 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-28 01:53:30,540 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 196 flow [2024-06-28 01:53:30,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:30,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:30,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:30,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:53:30,541 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:30,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:30,542 INFO L85 PathProgramCache]: Analyzing trace with hash -942722673, now seen corresponding path program 1 times [2024-06-28 01:53:30,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:30,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116636470] [2024-06-28 01:53:30,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:30,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:31,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:31,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:31,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116636470] [2024-06-28 01:53:31,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116636470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:31,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:31,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:53:31,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216144136] [2024-06-28 01:53:31,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:31,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:53:31,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:31,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:53:31,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:53:31,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:53:31,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:31,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:31,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:53:31,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:32,855 INFO L124 PetriNetUnfolderBase]: 4946/7742 cut-off events. [2024-06-28 01:53:32,855 INFO L125 PetriNetUnfolderBase]: For 2605/2605 co-relation queries the response was YES. [2024-06-28 01:53:32,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17992 conditions, 7742 events. 4946/7742 cut-off events. For 2605/2605 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 45526 event pairs, 2742 based on Foata normal form. 3/7527 useless extension candidates. Maximal degree in co-relation 17977. Up to 7026 conditions per place. [2024-06-28 01:53:32,889 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 83 selfloop transitions, 13 changer transitions 0/103 dead transitions. [2024-06-28 01:53:32,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 103 transitions, 533 flow [2024-06-28 01:53:32,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:53:32,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:53:32,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-06-28 01:53:32,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5708333333333333 [2024-06-28 01:53:32,892 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 196 flow. Second operand 5 states and 137 transitions. [2024-06-28 01:53:32,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 103 transitions, 533 flow [2024-06-28 01:53:32,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 103 transitions, 527 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-28 01:53:32,895 INFO L231 Difference]: Finished difference. Result has 63 places, 66 transitions, 320 flow [2024-06-28 01:53:32,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=320, PETRI_PLACES=63, PETRI_TRANSITIONS=66} [2024-06-28 01:53:32,896 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-06-28 01:53:32,896 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 320 flow [2024-06-28 01:53:32,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:32,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:32,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:32,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:53:32,897 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:32,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:32,897 INFO L85 PathProgramCache]: Analyzing trace with hash 840369420, now seen corresponding path program 1 times [2024-06-28 01:53:32,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:32,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639316022] [2024-06-28 01:53:32,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:32,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:34,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:34,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:34,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639316022] [2024-06-28 01:53:34,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639316022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:34,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:34,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:53:34,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789868912] [2024-06-28 01:53:34,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:34,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:53:34,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:34,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:53:34,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:53:34,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:53:34,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 320 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:34,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:34,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:53:34,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:35,792 INFO L124 PetriNetUnfolderBase]: 4943/7737 cut-off events. [2024-06-28 01:53:35,792 INFO L125 PetriNetUnfolderBase]: For 5696/5696 co-relation queries the response was YES. [2024-06-28 01:53:35,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19977 conditions, 7737 events. 4943/7737 cut-off events. For 5696/5696 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 45452 event pairs, 2339 based on Foata normal form. 3/7522 useless extension candidates. Maximal degree in co-relation 19957. Up to 6994 conditions per place. [2024-06-28 01:53:35,823 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 96 selfloop transitions, 17 changer transitions 0/120 dead transitions. [2024-06-28 01:53:35,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 120 transitions, 694 flow [2024-06-28 01:53:35,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:53:35,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:53:35,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-06-28 01:53:35,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-06-28 01:53:35,825 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 320 flow. Second operand 6 states and 164 transitions. [2024-06-28 01:53:35,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 120 transitions, 694 flow [2024-06-28 01:53:35,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 120 transitions, 673 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-28 01:53:35,834 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 376 flow [2024-06-28 01:53:35,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2024-06-28 01:53:35,836 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-28 01:53:35,836 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 376 flow [2024-06-28 01:53:35,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:35,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:35,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:35,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:53:35,837 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:35,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:35,838 INFO L85 PathProgramCache]: Analyzing trace with hash 281649486, now seen corresponding path program 1 times [2024-06-28 01:53:35,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:35,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53103650] [2024-06-28 01:53:35,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:35,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:37,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:37,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53103650] [2024-06-28 01:53:37,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53103650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:37,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:37,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:53:37,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543792727] [2024-06-28 01:53:37,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:37,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:53:37,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:37,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:53:37,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:53:37,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:53:37,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 376 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:37,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:37,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:53:37,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:38,937 INFO L124 PetriNetUnfolderBase]: 4934/7722 cut-off events. [2024-06-28 01:53:38,937 INFO L125 PetriNetUnfolderBase]: For 9003/9003 co-relation queries the response was YES. [2024-06-28 01:53:38,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21345 conditions, 7722 events. 4934/7722 cut-off events. For 9003/9003 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 45329 event pairs, 1879 based on Foata normal form. 6/7510 useless extension candidates. Maximal degree in co-relation 21323. Up to 6919 conditions per place. [2024-06-28 01:53:38,980 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 99 selfloop transitions, 34 changer transitions 0/140 dead transitions. [2024-06-28 01:53:38,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 140 transitions, 874 flow [2024-06-28 01:53:38,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:53:38,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:53:38,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-28 01:53:38,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-06-28 01:53:38,982 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 376 flow. Second operand 7 states and 188 transitions. [2024-06-28 01:53:38,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 140 transitions, 874 flow [2024-06-28 01:53:38,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 140 transitions, 829 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 01:53:38,988 INFO L231 Difference]: Finished difference. Result has 72 places, 80 transitions, 520 flow [2024-06-28 01:53:38,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=520, PETRI_PLACES=72, PETRI_TRANSITIONS=80} [2024-06-28 01:53:38,989 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2024-06-28 01:53:38,989 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 80 transitions, 520 flow [2024-06-28 01:53:38,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:38,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:38,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:38,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:53:38,990 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:38,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:38,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1903844450, now seen corresponding path program 1 times [2024-06-28 01:53:38,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:38,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914594333] [2024-06-28 01:53:38,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:38,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:40,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:40,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914594333] [2024-06-28 01:53:40,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914594333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:40,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:40,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:53:40,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81891386] [2024-06-28 01:53:40,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:40,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:53:40,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:40,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:53:40,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:53:40,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:53:40,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 80 transitions, 520 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) [2024-06-28 01:53:40,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:40,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:53:40,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:42,278 INFO L124 PetriNetUnfolderBase]: 3848/6147 cut-off events. [2024-06-28 01:53:42,278 INFO L125 PetriNetUnfolderBase]: For 11251/11404 co-relation queries the response was YES. [2024-06-28 01:53:42,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18372 conditions, 6147 events. 3848/6147 cut-off events. For 11251/11404 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 37160 event pairs, 1481 based on Foata normal form. 10/5730 useless extension candidates. Maximal degree in co-relation 18346. Up to 5380 conditions per place. [2024-06-28 01:53:42,312 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 81 selfloop transitions, 15 changer transitions 0/113 dead transitions. [2024-06-28 01:53:42,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 113 transitions, 820 flow [2024-06-28 01:53:42,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:53:42,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:53:42,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-28 01:53:42,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-28 01:53:42,314 INFO L175 Difference]: Start difference. First operand has 72 places, 80 transitions, 520 flow. Second operand 5 states and 124 transitions. [2024-06-28 01:53:42,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 113 transitions, 820 flow [2024-06-28 01:53:42,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 113 transitions, 734 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 01:53:42,323 INFO L231 Difference]: Finished difference. Result has 75 places, 86 transitions, 524 flow [2024-06-28 01:53:42,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=524, PETRI_PLACES=75, PETRI_TRANSITIONS=86} [2024-06-28 01:53:42,323 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-28 01:53:42,323 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 86 transitions, 524 flow [2024-06-28 01:53:42,324 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) [2024-06-28 01:53:42,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:42,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:42,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:53:42,324 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:42,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:42,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1110361928, now seen corresponding path program 1 times [2024-06-28 01:53:42,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:42,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905545374] [2024-06-28 01:53:42,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:42,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:44,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:44,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:44,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905545374] [2024-06-28 01:53:44,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905545374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:44,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:44,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:53:44,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977326363] [2024-06-28 01:53:44,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:44,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:53:44,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:44,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:53:44,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:53:44,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:53:44,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 86 transitions, 524 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:44,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:44,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:53:44,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:46,069 INFO L124 PetriNetUnfolderBase]: 4978/7619 cut-off events. [2024-06-28 01:53:46,069 INFO L125 PetriNetUnfolderBase]: For 16899/16914 co-relation queries the response was YES. [2024-06-28 01:53:46,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24352 conditions, 7619 events. 4978/7619 cut-off events. For 16899/16914 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 43163 event pairs, 1773 based on Foata normal form. 20/7476 useless extension candidates. Maximal degree in co-relation 24323. Up to 6866 conditions per place. [2024-06-28 01:53:46,109 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 109 selfloop transitions, 25 changer transitions 0/140 dead transitions. [2024-06-28 01:53:46,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 140 transitions, 1029 flow [2024-06-28 01:53:46,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:53:46,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:53:46,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 01:53:46,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-28 01:53:46,110 INFO L175 Difference]: Start difference. First operand has 75 places, 86 transitions, 524 flow. Second operand 6 states and 145 transitions. [2024-06-28 01:53:46,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 140 transitions, 1029 flow [2024-06-28 01:53:46,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 140 transitions, 1023 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 01:53:46,122 INFO L231 Difference]: Finished difference. Result has 82 places, 99 transitions, 706 flow [2024-06-28 01:53:46,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=706, PETRI_PLACES=82, PETRI_TRANSITIONS=99} [2024-06-28 01:53:46,122 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2024-06-28 01:53:46,122 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 99 transitions, 706 flow [2024-06-28 01:53:46,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:46,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:46,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:46,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:53:46,123 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:46,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:46,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1418857789, now seen corresponding path program 1 times [2024-06-28 01:53:46,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:46,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884414238] [2024-06-28 01:53:46,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:46,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:47,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:47,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:47,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884414238] [2024-06-28 01:53:47,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884414238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:47,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:47,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:53:47,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553217403] [2024-06-28 01:53:47,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:47,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:53:47,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:47,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:53:47,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:53:47,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:53:47,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 99 transitions, 706 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:47,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:47,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:53:47,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:49,462 INFO L124 PetriNetUnfolderBase]: 5132/7874 cut-off events. [2024-06-28 01:53:49,463 INFO L125 PetriNetUnfolderBase]: For 23515/23515 co-relation queries the response was YES. [2024-06-28 01:53:49,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27935 conditions, 7874 events. 5132/7874 cut-off events. For 23515/23515 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 44822 event pairs, 1816 based on Foata normal form. 2/7700 useless extension candidates. Maximal degree in co-relation 27901. Up to 6979 conditions per place. [2024-06-28 01:53:49,506 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 132 selfloop transitions, 43 changer transitions 0/181 dead transitions. [2024-06-28 01:53:49,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 181 transitions, 1492 flow [2024-06-28 01:53:49,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:53:49,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:53:49,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 01:53:49,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5327380952380952 [2024-06-28 01:53:49,508 INFO L175 Difference]: Start difference. First operand has 82 places, 99 transitions, 706 flow. Second operand 7 states and 179 transitions. [2024-06-28 01:53:49,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 181 transitions, 1492 flow [2024-06-28 01:53:49,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 181 transitions, 1464 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-28 01:53:49,526 INFO L231 Difference]: Finished difference. Result has 91 places, 122 transitions, 1041 flow [2024-06-28 01:53:49,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1041, PETRI_PLACES=91, PETRI_TRANSITIONS=122} [2024-06-28 01:53:49,527 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 37 predicate places. [2024-06-28 01:53:49,527 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 122 transitions, 1041 flow [2024-06-28 01:53:49,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:49,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:49,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:49,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:53:49,527 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:49,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:49,528 INFO L85 PathProgramCache]: Analyzing trace with hash -68154271, now seen corresponding path program 2 times [2024-06-28 01:53:49,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:49,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144722301] [2024-06-28 01:53:49,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:49,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:51,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:51,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:51,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144722301] [2024-06-28 01:53:51,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144722301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:51,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:51,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:53:51,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852675916] [2024-06-28 01:53:51,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:51,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:53:51,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:51,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:53:51,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:53:51,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:53:51,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 122 transitions, 1041 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:51,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:51,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:53:51,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:53,241 INFO L124 PetriNetUnfolderBase]: 5190/7958 cut-off events. [2024-06-28 01:53:53,242 INFO L125 PetriNetUnfolderBase]: For 27330/27330 co-relation queries the response was YES. [2024-06-28 01:53:53,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29813 conditions, 7958 events. 5190/7958 cut-off events. For 27330/27330 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 45207 event pairs, 1840 based on Foata normal form. 3/7784 useless extension candidates. Maximal degree in co-relation 29773. Up to 7017 conditions per place. [2024-06-28 01:53:53,288 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 119 selfloop transitions, 49 changer transitions 0/174 dead transitions. [2024-06-28 01:53:53,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 174 transitions, 1647 flow [2024-06-28 01:53:53,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:53:53,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:53:53,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 01:53:53,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:53:53,290 INFO L175 Difference]: Start difference. First operand has 91 places, 122 transitions, 1041 flow. Second operand 6 states and 150 transitions. [2024-06-28 01:53:53,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 174 transitions, 1647 flow [2024-06-28 01:53:53,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 174 transitions, 1605 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:53:53,320 INFO L231 Difference]: Finished difference. Result has 95 places, 128 transitions, 1188 flow [2024-06-28 01:53:53,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1188, PETRI_PLACES=95, PETRI_TRANSITIONS=128} [2024-06-28 01:53:53,320 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 41 predicate places. [2024-06-28 01:53:53,321 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 128 transitions, 1188 flow [2024-06-28 01:53:53,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:53,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:53,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:53,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:53:53,321 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:53,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:53,321 INFO L85 PathProgramCache]: Analyzing trace with hash 625790339, now seen corresponding path program 3 times [2024-06-28 01:53:53,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:53,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531769372] [2024-06-28 01:53:53,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:53,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:55,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:55,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:55,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531769372] [2024-06-28 01:53:55,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531769372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:55,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:55,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:53:55,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385118439] [2024-06-28 01:53:55,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:55,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:53:55,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:55,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:53:55,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:53:55,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:53:55,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 128 transitions, 1188 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:55,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:55,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:53:55,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:57,009 INFO L124 PetriNetUnfolderBase]: 5160/7899 cut-off events. [2024-06-28 01:53:57,009 INFO L125 PetriNetUnfolderBase]: For 30681/30696 co-relation queries the response was YES. [2024-06-28 01:53:57,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29905 conditions, 7899 events. 5160/7899 cut-off events. For 30681/30696 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 44796 event pairs, 1800 based on Foata normal form. 21/7748 useless extension candidates. Maximal degree in co-relation 29863. Up to 6991 conditions per place. [2024-06-28 01:53:57,052 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 116 selfloop transitions, 46 changer transitions 0/168 dead transitions. [2024-06-28 01:53:57,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 168 transitions, 1656 flow [2024-06-28 01:53:57,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:53:57,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:53:57,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 01:53:57,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-28 01:53:57,054 INFO L175 Difference]: Start difference. First operand has 95 places, 128 transitions, 1188 flow. Second operand 6 states and 143 transitions. [2024-06-28 01:53:57,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 168 transitions, 1656 flow [2024-06-28 01:53:57,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 168 transitions, 1584 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:53:57,092 INFO L231 Difference]: Finished difference. Result has 97 places, 128 transitions, 1222 flow [2024-06-28 01:53:57,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1116, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1222, PETRI_PLACES=97, PETRI_TRANSITIONS=128} [2024-06-28 01:53:57,093 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2024-06-28 01:53:57,093 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 128 transitions, 1222 flow [2024-06-28 01:53:57,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:57,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:57,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:57,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:53:57,094 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:57,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:57,094 INFO L85 PathProgramCache]: Analyzing trace with hash 2119379141, now seen corresponding path program 1 times [2024-06-28 01:53:57,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:57,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725450893] [2024-06-28 01:53:57,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:57,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:59,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:59,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725450893] [2024-06-28 01:53:59,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725450893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:59,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:59,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:53:59,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505882946] [2024-06-28 01:53:59,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:59,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:53:59,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:59,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:53:59,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:53:59,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:53:59,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 128 transitions, 1222 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:59,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:59,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:53:59,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:00,899 INFO L124 PetriNetUnfolderBase]: 5196/8124 cut-off events. [2024-06-28 01:54:00,899 INFO L125 PetriNetUnfolderBase]: For 31247/31247 co-relation queries the response was YES. [2024-06-28 01:54:00,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30415 conditions, 8124 events. 5196/8124 cut-off events. For 31247/31247 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 47729 event pairs, 2020 based on Foata normal form. 2/7897 useless extension candidates. Maximal degree in co-relation 30373. Up to 7323 conditions per place. [2024-06-28 01:54:00,945 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 156 selfloop transitions, 22 changer transitions 0/184 dead transitions. [2024-06-28 01:54:00,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 184 transitions, 1792 flow [2024-06-28 01:54:00,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:54:00,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:54:00,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 01:54:00,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-28 01:54:00,947 INFO L175 Difference]: Start difference. First operand has 97 places, 128 transitions, 1222 flow. Second operand 7 states and 164 transitions. [2024-06-28 01:54:00,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 184 transitions, 1792 flow [2024-06-28 01:54:00,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 184 transitions, 1733 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:54:00,978 INFO L231 Difference]: Finished difference. Result has 102 places, 134 transitions, 1286 flow [2024-06-28 01:54:00,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1286, PETRI_PLACES=102, PETRI_TRANSITIONS=134} [2024-06-28 01:54:00,979 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-06-28 01:54:00,979 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 134 transitions, 1286 flow [2024-06-28 01:54:00,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:00,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:00,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:00,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:54:00,979 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:00,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:00,980 INFO L85 PathProgramCache]: Analyzing trace with hash -2112780321, now seen corresponding path program 2 times [2024-06-28 01:54:00,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:00,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930331053] [2024-06-28 01:54:00,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:00,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:03,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:03,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:03,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930331053] [2024-06-28 01:54:03,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930331053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:03,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:03,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:54:03,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513742275] [2024-06-28 01:54:03,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:03,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:54:03,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:03,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:54:03,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:54:03,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:54:03,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 134 transitions, 1286 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:03,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:03,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:54:03,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:04,755 INFO L124 PetriNetUnfolderBase]: 5227/8169 cut-off events. [2024-06-28 01:54:04,755 INFO L125 PetriNetUnfolderBase]: For 38296/38296 co-relation queries the response was YES. [2024-06-28 01:54:04,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31848 conditions, 8169 events. 5227/8169 cut-off events. For 38296/38296 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 48081 event pairs, 1906 based on Foata normal form. 2/7942 useless extension candidates. Maximal degree in co-relation 31804. Up to 7223 conditions per place. [2024-06-28 01:54:04,813 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 163 selfloop transitions, 40 changer transitions 0/209 dead transitions. [2024-06-28 01:54:04,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 209 transitions, 2173 flow [2024-06-28 01:54:04,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:54:04,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:54:04,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:54:04,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-28 01:54:04,815 INFO L175 Difference]: Start difference. First operand has 102 places, 134 transitions, 1286 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:54:04,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 209 transitions, 2173 flow [2024-06-28 01:54:04,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 209 transitions, 2136 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 01:54:04,863 INFO L231 Difference]: Finished difference. Result has 109 places, 163 transitions, 1763 flow [2024-06-28 01:54:04,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1249, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1763, PETRI_PLACES=109, PETRI_TRANSITIONS=163} [2024-06-28 01:54:04,864 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 55 predicate places. [2024-06-28 01:54:04,864 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 163 transitions, 1763 flow [2024-06-28 01:54:04,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:04,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:04,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:04,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:54:04,865 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:04,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:04,865 INFO L85 PathProgramCache]: Analyzing trace with hash -2075333891, now seen corresponding path program 3 times [2024-06-28 01:54:04,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:04,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371822884] [2024-06-28 01:54:04,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:04,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:07,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:07,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:07,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371822884] [2024-06-28 01:54:07,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371822884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:07,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:07,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:54:07,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189989679] [2024-06-28 01:54:07,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:07,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:54:07,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:07,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:54:07,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:54:07,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:54:07,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 163 transitions, 1763 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:07,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:07,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:54:07,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:08,910 INFO L124 PetriNetUnfolderBase]: 5292/8268 cut-off events. [2024-06-28 01:54:08,910 INFO L125 PetriNetUnfolderBase]: For 46818/46833 co-relation queries the response was YES. [2024-06-28 01:54:08,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34654 conditions, 8268 events. 5292/8268 cut-off events. For 46818/46833 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 48599 event pairs, 1898 based on Foata normal form. 18/8052 useless extension candidates. Maximal degree in co-relation 34605. Up to 7272 conditions per place. [2024-06-28 01:54:08,967 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 169 selfloop transitions, 38 changer transitions 0/213 dead transitions. [2024-06-28 01:54:08,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 213 transitions, 2382 flow [2024-06-28 01:54:08,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:54:08,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:54:08,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:54:08,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 01:54:08,968 INFO L175 Difference]: Start difference. First operand has 109 places, 163 transitions, 1763 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:54:08,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 213 transitions, 2382 flow [2024-06-28 01:54:09,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 213 transitions, 2312 flow, removed 34 selfloop flow, removed 1 redundant places. [2024-06-28 01:54:09,034 INFO L231 Difference]: Finished difference. Result has 115 places, 167 transitions, 1825 flow [2024-06-28 01:54:09,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1693, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1825, PETRI_PLACES=115, PETRI_TRANSITIONS=167} [2024-06-28 01:54:09,035 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 61 predicate places. [2024-06-28 01:54:09,035 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 167 transitions, 1825 flow [2024-06-28 01:54:09,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:09,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:09,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:09,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:54:09,036 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:09,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:09,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1905849865, now seen corresponding path program 1 times [2024-06-28 01:54:09,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:09,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366041009] [2024-06-28 01:54:09,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:09,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:12,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:12,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:12,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366041009] [2024-06-28 01:54:12,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366041009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:12,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:12,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:12,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389191567] [2024-06-28 01:54:12,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:12,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:12,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:12,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:12,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:12,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:54:12,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 167 transitions, 1825 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:12,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:12,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:54:12,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:14,087 INFO L124 PetriNetUnfolderBase]: 5334/8318 cut-off events. [2024-06-28 01:54:14,087 INFO L125 PetriNetUnfolderBase]: For 54433/54448 co-relation queries the response was YES. [2024-06-28 01:54:14,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36453 conditions, 8318 events. 5334/8318 cut-off events. For 54433/54448 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 48832 event pairs, 1777 based on Foata normal form. 20/8108 useless extension candidates. Maximal degree in co-relation 36401. Up to 7144 conditions per place. [2024-06-28 01:54:14,138 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 145 selfloop transitions, 71 changer transitions 0/222 dead transitions. [2024-06-28 01:54:14,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 222 transitions, 2486 flow [2024-06-28 01:54:14,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:54:14,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:54:14,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:54:14,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-28 01:54:14,139 INFO L175 Difference]: Start difference. First operand has 115 places, 167 transitions, 1825 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:54:14,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 222 transitions, 2486 flow [2024-06-28 01:54:14,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 222 transitions, 2382 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 01:54:14,191 INFO L231 Difference]: Finished difference. Result has 118 places, 170 transitions, 1910 flow [2024-06-28 01:54:14,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1910, PETRI_PLACES=118, PETRI_TRANSITIONS=170} [2024-06-28 01:54:14,191 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2024-06-28 01:54:14,192 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 170 transitions, 1910 flow [2024-06-28 01:54:14,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:14,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:14,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:14,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:54:14,193 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:14,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:14,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1276155832, now seen corresponding path program 1 times [2024-06-28 01:54:14,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:14,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893288830] [2024-06-28 01:54:14,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:14,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:16,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:16,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:16,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893288830] [2024-06-28 01:54:16,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893288830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:16,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:16,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:16,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241420251] [2024-06-28 01:54:16,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:16,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:16,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:16,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:16,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:16,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:54:16,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 170 transitions, 1910 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:16,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:16,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:54:16,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:18,738 INFO L124 PetriNetUnfolderBase]: 5370/8390 cut-off events. [2024-06-28 01:54:18,738 INFO L125 PetriNetUnfolderBase]: For 59247/59247 co-relation queries the response was YES. [2024-06-28 01:54:18,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37709 conditions, 8390 events. 5370/8390 cut-off events. For 59247/59247 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 49386 event pairs, 1840 based on Foata normal form. 2/8156 useless extension candidates. Maximal degree in co-relation 37656. Up to 7537 conditions per place. [2024-06-28 01:54:18,788 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 206 selfloop transitions, 28 changer transitions 0/240 dead transitions. [2024-06-28 01:54:18,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 240 transitions, 2664 flow [2024-06-28 01:54:18,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:18,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:18,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 01:54:18,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-06-28 01:54:18,789 INFO L175 Difference]: Start difference. First operand has 118 places, 170 transitions, 1910 flow. Second operand 8 states and 191 transitions. [2024-06-28 01:54:18,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 240 transitions, 2664 flow [2024-06-28 01:54:18,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 240 transitions, 2512 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:54:18,842 INFO L231 Difference]: Finished difference. Result has 122 places, 176 transitions, 1917 flow [2024-06-28 01:54:18,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1917, PETRI_PLACES=122, PETRI_TRANSITIONS=176} [2024-06-28 01:54:18,843 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 68 predicate places. [2024-06-28 01:54:18,843 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 176 transitions, 1917 flow [2024-06-28 01:54:18,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:18,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:18,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:18,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:54:18,843 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:18,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:18,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1075397315, now seen corresponding path program 1 times [2024-06-28 01:54:18,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:18,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573941031] [2024-06-28 01:54:18,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:18,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:21,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:21,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:21,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573941031] [2024-06-28 01:54:21,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573941031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:21,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:21,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:54:21,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280055871] [2024-06-28 01:54:21,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:21,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:54:21,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:21,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:54:21,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:54:21,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:54:21,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 176 transitions, 1917 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:21,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:21,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:54:21,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:23,098 INFO L124 PetriNetUnfolderBase]: 5432/8478 cut-off events. [2024-06-28 01:54:23,098 INFO L125 PetriNetUnfolderBase]: For 66939/66954 co-relation queries the response was YES. [2024-06-28 01:54:23,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39040 conditions, 8478 events. 5432/8478 cut-off events. For 66939/66954 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 49853 event pairs, 1752 based on Foata normal form. 16/8256 useless extension candidates. Maximal degree in co-relation 38985. Up to 7608 conditions per place. [2024-06-28 01:54:23,154 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 200 selfloop transitions, 24 changer transitions 0/230 dead transitions. [2024-06-28 01:54:23,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 230 transitions, 2585 flow [2024-06-28 01:54:23,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:54:23,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:54:23,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 01:54:23,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-28 01:54:23,156 INFO L175 Difference]: Start difference. First operand has 122 places, 176 transitions, 1917 flow. Second operand 7 states and 164 transitions. [2024-06-28 01:54:23,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 230 transitions, 2585 flow [2024-06-28 01:54:23,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 230 transitions, 2516 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 01:54:23,227 INFO L231 Difference]: Finished difference. Result has 125 places, 179 transitions, 1948 flow [2024-06-28 01:54:23,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1948, PETRI_PLACES=125, PETRI_TRANSITIONS=179} [2024-06-28 01:54:23,228 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 71 predicate places. [2024-06-28 01:54:23,228 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 179 transitions, 1948 flow [2024-06-28 01:54:23,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:23,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:23,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:23,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:54:23,228 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:23,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:23,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1276246042, now seen corresponding path program 2 times [2024-06-28 01:54:23,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:23,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794585575] [2024-06-28 01:54:23,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:23,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:27,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:27,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794585575] [2024-06-28 01:54:27,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794585575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:27,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:27,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:27,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644434182] [2024-06-28 01:54:27,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:27,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:27,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:27,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:27,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:27,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:54:27,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 179 transitions, 1948 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:27,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:27,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:54:27,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:28,965 INFO L124 PetriNetUnfolderBase]: 5468/8535 cut-off events. [2024-06-28 01:54:28,965 INFO L125 PetriNetUnfolderBase]: For 74022/74026 co-relation queries the response was YES. [2024-06-28 01:54:29,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40516 conditions, 8535 events. 5468/8535 cut-off events. For 74022/74026 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 50229 event pairs, 1824 based on Foata normal form. 6/8303 useless extension candidates. Maximal degree in co-relation 40459. Up to 7400 conditions per place. [2024-06-28 01:54:29,038 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 188 selfloop transitions, 55 changer transitions 0/249 dead transitions. [2024-06-28 01:54:29,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 249 transitions, 2741 flow [2024-06-28 01:54:29,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:29,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:29,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:54:29,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-28 01:54:29,040 INFO L175 Difference]: Start difference. First operand has 125 places, 179 transitions, 1948 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:54:29,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 249 transitions, 2741 flow [2024-06-28 01:54:29,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 249 transitions, 2668 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:54:29,133 INFO L231 Difference]: Finished difference. Result has 129 places, 186 transitions, 2099 flow [2024-06-28 01:54:29,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1880, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2099, PETRI_PLACES=129, PETRI_TRANSITIONS=186} [2024-06-28 01:54:29,134 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 75 predicate places. [2024-06-28 01:54:29,134 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 186 transitions, 2099 flow [2024-06-28 01:54:29,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:29,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:29,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:29,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:54:29,134 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:29,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:29,135 INFO L85 PathProgramCache]: Analyzing trace with hash 2101998037, now seen corresponding path program 2 times [2024-06-28 01:54:29,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:29,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692697062] [2024-06-28 01:54:29,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:29,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:31,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:31,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:31,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692697062] [2024-06-28 01:54:31,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692697062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:31,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:31,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:54:31,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020358329] [2024-06-28 01:54:31,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:31,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:54:31,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:31,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:54:31,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:54:31,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:54:31,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 186 transitions, 2099 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:31,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:31,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:54:31,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:33,607 INFO L124 PetriNetUnfolderBase]: 6321/9729 cut-off events. [2024-06-28 01:54:33,607 INFO L125 PetriNetUnfolderBase]: For 98100/98115 co-relation queries the response was YES. [2024-06-28 01:54:33,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49009 conditions, 9729 events. 6321/9729 cut-off events. For 98100/98115 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 57324 event pairs, 1791 based on Foata normal form. 16/9505 useless extension candidates. Maximal degree in co-relation 48950. Up to 7602 conditions per place. [2024-06-28 01:54:33,692 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 179 selfloop transitions, 93 changer transitions 0/278 dead transitions. [2024-06-28 01:54:33,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 278 transitions, 3221 flow [2024-06-28 01:54:33,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:33,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:33,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 01:54:33,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-28 01:54:33,693 INFO L175 Difference]: Start difference. First operand has 129 places, 186 transitions, 2099 flow. Second operand 8 states and 204 transitions. [2024-06-28 01:54:33,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 278 transitions, 3221 flow [2024-06-28 01:54:33,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 278 transitions, 3054 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 01:54:33,837 INFO L231 Difference]: Finished difference. Result has 133 places, 205 transitions, 2426 flow [2024-06-28 01:54:33,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2426, PETRI_PLACES=133, PETRI_TRANSITIONS=205} [2024-06-28 01:54:33,838 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 79 predicate places. [2024-06-28 01:54:33,838 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 205 transitions, 2426 flow [2024-06-28 01:54:33,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:33,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:33,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:33,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:54:33,838 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:33,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:33,839 INFO L85 PathProgramCache]: Analyzing trace with hash 751974845, now seen corresponding path program 3 times [2024-06-28 01:54:33,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:33,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760020294] [2024-06-28 01:54:33,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:33,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:35,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:35,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760020294] [2024-06-28 01:54:35,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760020294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:35,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:35,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:54:35,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602190804] [2024-06-28 01:54:35,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:35,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:54:35,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:35,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:54:35,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:54:35,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:54:35,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 205 transitions, 2426 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:35,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:35,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:54:35,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:37,938 INFO L124 PetriNetUnfolderBase]: 6351/9878 cut-off events. [2024-06-28 01:54:37,938 INFO L125 PetriNetUnfolderBase]: For 115552/115572 co-relation queries the response was YES. [2024-06-28 01:54:37,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54209 conditions, 9878 events. 6351/9878 cut-off events. For 115552/115572 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 59134 event pairs, 1997 based on Foata normal form. 20/9622 useless extension candidates. Maximal degree in co-relation 54148. Up to 8508 conditions per place. [2024-06-28 01:54:38,014 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 214 selfloop transitions, 63 changer transitions 0/283 dead transitions. [2024-06-28 01:54:38,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 283 transitions, 3708 flow [2024-06-28 01:54:38,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:54:38,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:54:38,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 01:54:38,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-28 01:54:38,016 INFO L175 Difference]: Start difference. First operand has 133 places, 205 transitions, 2426 flow. Second operand 7 states and 165 transitions. [2024-06-28 01:54:38,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 283 transitions, 3708 flow [2024-06-28 01:54:38,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 283 transitions, 3434 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-28 01:54:38,197 INFO L231 Difference]: Finished difference. Result has 137 places, 229 transitions, 2810 flow [2024-06-28 01:54:38,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2228, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2810, PETRI_PLACES=137, PETRI_TRANSITIONS=229} [2024-06-28 01:54:38,197 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 83 predicate places. [2024-06-28 01:54:38,197 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 229 transitions, 2810 flow [2024-06-28 01:54:38,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:38,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:38,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:38,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:54:38,198 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:38,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:38,198 INFO L85 PathProgramCache]: Analyzing trace with hash 751974690, now seen corresponding path program 3 times [2024-06-28 01:54:38,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:38,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228118638] [2024-06-28 01:54:38,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:38,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:41,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:41,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228118638] [2024-06-28 01:54:41,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228118638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:41,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:41,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:41,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83925579] [2024-06-28 01:54:41,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:41,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:41,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:41,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:41,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:41,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:54:41,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 229 transitions, 2810 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:41,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:41,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:54:41,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:43,255 INFO L124 PetriNetUnfolderBase]: 6382/9924 cut-off events. [2024-06-28 01:54:43,255 INFO L125 PetriNetUnfolderBase]: For 121124/121128 co-relation queries the response was YES. [2024-06-28 01:54:43,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55244 conditions, 9924 events. 6382/9924 cut-off events. For 121124/121128 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 59432 event pairs, 2029 based on Foata normal form. 6/9655 useless extension candidates. Maximal degree in co-relation 55180. Up to 8818 conditions per place. [2024-06-28 01:54:43,332 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 237 selfloop transitions, 46 changer transitions 0/289 dead transitions. [2024-06-28 01:54:43,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 289 transitions, 3635 flow [2024-06-28 01:54:43,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:43,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:43,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:54:43,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-28 01:54:43,335 INFO L175 Difference]: Start difference. First operand has 137 places, 229 transitions, 2810 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:54:43,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 289 transitions, 3635 flow [2024-06-28 01:54:43,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 289 transitions, 3524 flow, removed 49 selfloop flow, removed 2 redundant places. [2024-06-28 01:54:43,526 INFO L231 Difference]: Finished difference. Result has 143 places, 233 transitions, 2875 flow [2024-06-28 01:54:43,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2699, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2875, PETRI_PLACES=143, PETRI_TRANSITIONS=233} [2024-06-28 01:54:43,526 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 89 predicate places. [2024-06-28 01:54:43,526 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 233 transitions, 2875 flow [2024-06-28 01:54:43,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:43,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:43,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:43,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:54:43,527 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:43,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:43,527 INFO L85 PathProgramCache]: Analyzing trace with hash 560156640, now seen corresponding path program 4 times [2024-06-28 01:54:43,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:43,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617211039] [2024-06-28 01:54:43,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:43,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:45,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:45,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:45,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617211039] [2024-06-28 01:54:45,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617211039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:45,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:45,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:45,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500406016] [2024-06-28 01:54:45,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:45,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:45,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:45,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:45,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:45,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:54:45,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 233 transitions, 2875 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:45,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:45,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:54:45,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:48,231 INFO L124 PetriNetUnfolderBase]: 6477/10054 cut-off events. [2024-06-28 01:54:48,231 INFO L125 PetriNetUnfolderBase]: For 132830/132850 co-relation queries the response was YES. [2024-06-28 01:54:48,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57608 conditions, 10054 events. 6477/10054 cut-off events. For 132830/132850 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 60135 event pairs, 2006 based on Foata normal form. 22/9799 useless extension candidates. Maximal degree in co-relation 57542. Up to 8720 conditions per place. [2024-06-28 01:54:48,307 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 259 selfloop transitions, 90 changer transitions 0/355 dead transitions. [2024-06-28 01:54:48,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 355 transitions, 4651 flow [2024-06-28 01:54:48,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:54:48,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:54:48,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 234 transitions. [2024-06-28 01:54:48,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-28 01:54:48,308 INFO L175 Difference]: Start difference. First operand has 143 places, 233 transitions, 2875 flow. Second operand 10 states and 234 transitions. [2024-06-28 01:54:48,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 355 transitions, 4651 flow [2024-06-28 01:54:48,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 355 transitions, 4507 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 01:54:48,501 INFO L231 Difference]: Finished difference. Result has 150 places, 275 transitions, 3740 flow [2024-06-28 01:54:48,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2731, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3740, PETRI_PLACES=150, PETRI_TRANSITIONS=275} [2024-06-28 01:54:48,502 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 96 predicate places. [2024-06-28 01:54:48,502 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 275 transitions, 3740 flow [2024-06-28 01:54:48,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:48,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:48,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:48,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:54:48,502 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:48,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:48,503 INFO L85 PathProgramCache]: Analyzing trace with hash 906066820, now seen corresponding path program 1 times [2024-06-28 01:54:48,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:48,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411828310] [2024-06-28 01:54:48,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:48,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:51,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:51,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:51,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411828310] [2024-06-28 01:54:51,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411828310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:51,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:51,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:51,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047103086] [2024-06-28 01:54:51,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:51,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:51,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:51,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:51,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:51,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:54:51,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 275 transitions, 3740 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:51,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:51,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:54:51,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:53,954 INFO L124 PetriNetUnfolderBase]: 6887/10717 cut-off events. [2024-06-28 01:54:53,954 INFO L125 PetriNetUnfolderBase]: For 172617/172621 co-relation queries the response was YES. [2024-06-28 01:54:54,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65418 conditions, 10717 events. 6887/10717 cut-off events. For 172617/172621 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 65034 event pairs, 1635 based on Foata normal form. 4/10431 useless extension candidates. Maximal degree in co-relation 65348. Up to 8436 conditions per place. [2024-06-28 01:54:54,072 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 214 selfloop transitions, 170 changer transitions 0/390 dead transitions. [2024-06-28 01:54:54,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 390 transitions, 5504 flow [2024-06-28 01:54:54,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:54:54,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:54:54,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-06-28 01:54:54,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-28 01:54:54,073 INFO L175 Difference]: Start difference. First operand has 150 places, 275 transitions, 3740 flow. Second operand 9 states and 240 transitions. [2024-06-28 01:54:54,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 390 transitions, 5504 flow [2024-06-28 01:54:54,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 390 transitions, 5220 flow, removed 121 selfloop flow, removed 4 redundant places. [2024-06-28 01:54:54,545 INFO L231 Difference]: Finished difference. Result has 158 places, 292 transitions, 4324 flow [2024-06-28 01:54:54,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3470, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4324, PETRI_PLACES=158, PETRI_TRANSITIONS=292} [2024-06-28 01:54:54,545 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 104 predicate places. [2024-06-28 01:54:54,545 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 292 transitions, 4324 flow [2024-06-28 01:54:54,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:54,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:54,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:54,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:54:54,546 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:54,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:54,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1019622554, now seen corresponding path program 1 times [2024-06-28 01:54:54,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:54,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326949770] [2024-06-28 01:54:54,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:54,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:56,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:56,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:56,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326949770] [2024-06-28 01:54:56,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326949770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:56,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:56,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:56,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034975771] [2024-06-28 01:54:56,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:56,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:56,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:56,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:56,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:56,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:54:56,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 292 transitions, 4324 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:56,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:56,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:54:56,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:59,434 INFO L124 PetriNetUnfolderBase]: 7037/10932 cut-off events. [2024-06-28 01:54:59,434 INFO L125 PetriNetUnfolderBase]: For 210204/210244 co-relation queries the response was YES. [2024-06-28 01:54:59,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70944 conditions, 10932 events. 7037/10932 cut-off events. For 210204/210244 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 66324 event pairs, 2026 based on Foata normal form. 36/10675 useless extension candidates. Maximal degree in co-relation 70869. Up to 8887 conditions per place. [2024-06-28 01:54:59,549 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 214 selfloop transitions, 163 changer transitions 0/383 dead transitions. [2024-06-28 01:54:59,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 383 transitions, 5936 flow [2024-06-28 01:54:59,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:54:59,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:59,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 01:54:59,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-06-28 01:54:59,551 INFO L175 Difference]: Start difference. First operand has 158 places, 292 transitions, 4324 flow. Second operand 8 states and 206 transitions. [2024-06-28 01:54:59,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 383 transitions, 5936 flow [2024-06-28 01:55:00,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 383 transitions, 5668 flow, removed 77 selfloop flow, removed 3 redundant places. [2024-06-28 01:55:00,013 INFO L231 Difference]: Finished difference. Result has 166 places, 307 transitions, 4899 flow [2024-06-28 01:55:00,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4100, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4899, PETRI_PLACES=166, PETRI_TRANSITIONS=307} [2024-06-28 01:55:00,014 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 112 predicate places. [2024-06-28 01:55:00,014 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 307 transitions, 4899 flow [2024-06-28 01:55:00,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:00,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:00,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:00,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:55:00,014 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:00,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:00,014 INFO L85 PathProgramCache]: Analyzing trace with hash 906127270, now seen corresponding path program 2 times [2024-06-28 01:55:00,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:00,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642024410] [2024-06-28 01:55:00,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:00,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:02,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:02,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:02,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642024410] [2024-06-28 01:55:02,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642024410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:02,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:02,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:55:02,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265763025] [2024-06-28 01:55:02,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:02,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:55:02,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:02,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:55:02,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:55:02,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:55:02,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 307 transitions, 4899 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:02,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:02,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:55:02,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:05,551 INFO L124 PetriNetUnfolderBase]: 7087/11021 cut-off events. [2024-06-28 01:55:05,551 INFO L125 PetriNetUnfolderBase]: For 215275/215279 co-relation queries the response was YES. [2024-06-28 01:55:05,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72819 conditions, 11021 events. 7087/11021 cut-off events. For 215275/215279 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 67080 event pairs, 1979 based on Foata normal form. 4/10728 useless extension candidates. Maximal degree in co-relation 72739. Up to 9222 conditions per place. [2024-06-28 01:55:05,679 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 221 selfloop transitions, 172 changer transitions 0/399 dead transitions. [2024-06-28 01:55:05,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 399 transitions, 6225 flow [2024-06-28 01:55:05,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:55:05,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:55:05,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 01:55:05,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393518518518519 [2024-06-28 01:55:05,680 INFO L175 Difference]: Start difference. First operand has 166 places, 307 transitions, 4899 flow. Second operand 9 states and 233 transitions. [2024-06-28 01:55:05,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 399 transitions, 6225 flow [2024-06-28 01:55:06,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 399 transitions, 6081 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-06-28 01:55:06,240 INFO L231 Difference]: Finished difference. Result has 173 places, 309 transitions, 5163 flow [2024-06-28 01:55:06,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4755, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5163, PETRI_PLACES=173, PETRI_TRANSITIONS=309} [2024-06-28 01:55:06,240 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 119 predicate places. [2024-06-28 01:55:06,240 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 309 transitions, 5163 flow [2024-06-28 01:55:06,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:06,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:06,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:06,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:55:06,241 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:06,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:06,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1418206464, now seen corresponding path program 2 times [2024-06-28 01:55:06,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:06,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329955484] [2024-06-28 01:55:06,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:06,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:09,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:09,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:09,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329955484] [2024-06-28 01:55:09,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329955484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:09,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:09,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:55:09,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383384120] [2024-06-28 01:55:09,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:09,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:55:09,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:09,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:55:09,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:55:09,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:55:09,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 309 transitions, 5163 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:09,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:09,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:55:09,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:12,011 INFO L124 PetriNetUnfolderBase]: 7159/11134 cut-off events. [2024-06-28 01:55:12,012 INFO L125 PetriNetUnfolderBase]: For 218320/218340 co-relation queries the response was YES. [2024-06-28 01:55:12,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73643 conditions, 11134 events. 7159/11134 cut-off events. For 218320/218340 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 67901 event pairs, 1927 based on Foata normal form. 20/10850 useless extension candidates. Maximal degree in co-relation 73561. Up to 10011 conditions per place. [2024-06-28 01:55:12,138 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 339 selfloop transitions, 32 changer transitions 0/377 dead transitions. [2024-06-28 01:55:12,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 377 transitions, 6234 flow [2024-06-28 01:55:12,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:55:12,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:55:12,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:55:12,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 01:55:12,140 INFO L175 Difference]: Start difference. First operand has 173 places, 309 transitions, 5163 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:55:12,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 377 transitions, 6234 flow [2024-06-28 01:55:12,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 377 transitions, 5850 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 01:55:12,738 INFO L231 Difference]: Finished difference. Result has 174 places, 316 transitions, 4972 flow [2024-06-28 01:55:12,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4779, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4972, PETRI_PLACES=174, PETRI_TRANSITIONS=316} [2024-06-28 01:55:12,739 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 120 predicate places. [2024-06-28 01:55:12,739 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 316 transitions, 4972 flow [2024-06-28 01:55:12,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:12,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:12,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:12,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:55:12,740 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:12,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:12,740 INFO L85 PathProgramCache]: Analyzing trace with hash 908923780, now seen corresponding path program 3 times [2024-06-28 01:55:12,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:12,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736574593] [2024-06-28 01:55:12,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:12,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:16,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:16,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:16,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736574593] [2024-06-28 01:55:16,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736574593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:16,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:16,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:55:16,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996678221] [2024-06-28 01:55:16,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:16,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:55:16,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:16,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:55:16,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:55:16,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:55:16,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 316 transitions, 4972 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:16,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:16,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:55:16,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:18,945 INFO L124 PetriNetUnfolderBase]: 7164/11151 cut-off events. [2024-06-28 01:55:18,946 INFO L125 PetriNetUnfolderBase]: For 228058/228062 co-relation queries the response was YES. [2024-06-28 01:55:19,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74201 conditions, 11151 events. 7164/11151 cut-off events. For 228058/228062 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 68135 event pairs, 1981 based on Foata normal form. 8/10854 useless extension candidates. Maximal degree in co-relation 74118. Up to 9769 conditions per place. [2024-06-28 01:55:19,076 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 322 selfloop transitions, 68 changer transitions 0/396 dead transitions. [2024-06-28 01:55:19,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 396 transitions, 6148 flow [2024-06-28 01:55:19,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:55:19,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:55:19,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-28 01:55:19,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2024-06-28 01:55:19,077 INFO L175 Difference]: Start difference. First operand has 174 places, 316 transitions, 4972 flow. Second operand 9 states and 218 transitions. [2024-06-28 01:55:19,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 396 transitions, 6148 flow [2024-06-28 01:55:19,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 396 transitions, 6027 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 01:55:19,665 INFO L231 Difference]: Finished difference. Result has 178 places, 318 transitions, 5056 flow [2024-06-28 01:55:19,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4851, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5056, PETRI_PLACES=178, PETRI_TRANSITIONS=318} [2024-06-28 01:55:19,666 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 124 predicate places. [2024-06-28 01:55:19,666 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 318 transitions, 5056 flow [2024-06-28 01:55:19,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:19,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:19,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:19,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:55:19,666 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:19,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:19,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1022419064, now seen corresponding path program 3 times [2024-06-28 01:55:19,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:19,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188258911] [2024-06-28 01:55:19,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:19,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:23,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:23,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:23,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188258911] [2024-06-28 01:55:23,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188258911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:23,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:23,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:55:23,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720714110] [2024-06-28 01:55:23,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:23,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:55:23,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:23,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:55:23,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:55:23,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:55:23,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 318 transitions, 5056 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:23,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:23,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:55:23,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:26,250 INFO L124 PetriNetUnfolderBase]: 7206/11225 cut-off events. [2024-06-28 01:55:26,250 INFO L125 PetriNetUnfolderBase]: For 242397/242437 co-relation queries the response was YES. [2024-06-28 01:55:26,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75329 conditions, 11225 events. 7206/11225 cut-off events. For 242397/242437 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 68817 event pairs, 1963 based on Foata normal form. 40/10954 useless extension candidates. Maximal degree in co-relation 75245. Up to 9605 conditions per place. [2024-06-28 01:55:26,376 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 319 selfloop transitions, 80 changer transitions 0/405 dead transitions. [2024-06-28 01:55:26,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 405 transitions, 6402 flow [2024-06-28 01:55:26,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:55:26,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:55:26,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-28 01:55:26,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:55:26,377 INFO L175 Difference]: Start difference. First operand has 178 places, 318 transitions, 5056 flow. Second operand 9 states and 216 transitions. [2024-06-28 01:55:26,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 405 transitions, 6402 flow [2024-06-28 01:55:26,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 405 transitions, 6221 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 01:55:26,885 INFO L231 Difference]: Finished difference. Result has 182 places, 327 transitions, 5302 flow [2024-06-28 01:55:26,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4875, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5302, PETRI_PLACES=182, PETRI_TRANSITIONS=327} [2024-06-28 01:55:26,885 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 128 predicate places. [2024-06-28 01:55:26,885 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 327 transitions, 5302 flow [2024-06-28 01:55:26,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:26,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:26,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:26,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:55:26,886 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:26,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:26,886 INFO L85 PathProgramCache]: Analyzing trace with hash 855185694, now seen corresponding path program 4 times [2024-06-28 01:55:26,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:26,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293022443] [2024-06-28 01:55:26,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:26,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:29,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:29,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:29,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293022443] [2024-06-28 01:55:29,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293022443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:29,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:29,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:55:29,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199141791] [2024-06-28 01:55:29,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:29,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:55:29,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:29,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:55:29,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:55:30,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:55:30,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 327 transitions, 5302 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:30,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:30,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:55:30,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:33,359 INFO L124 PetriNetUnfolderBase]: 7454/11586 cut-off events. [2024-06-28 01:55:33,359 INFO L125 PetriNetUnfolderBase]: For 261331/261351 co-relation queries the response was YES. [2024-06-28 01:55:33,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79834 conditions, 11586 events. 7454/11586 cut-off events. For 261331/261351 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 71220 event pairs, 1809 based on Foata normal form. 20/11291 useless extension candidates. Maximal degree in co-relation 79747. Up to 9261 conditions per place. [2024-06-28 01:55:33,508 INFO L140 encePairwiseOnDemand]: 30/48 looper letters, 317 selfloop transitions, 150 changer transitions 0/473 dead transitions. [2024-06-28 01:55:33,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 473 transitions, 7590 flow [2024-06-28 01:55:33,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:55:33,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:55:33,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 268 transitions. [2024-06-28 01:55:33,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075757575757576 [2024-06-28 01:55:33,509 INFO L175 Difference]: Start difference. First operand has 182 places, 327 transitions, 5302 flow. Second operand 11 states and 268 transitions. [2024-06-28 01:55:33,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 473 transitions, 7590 flow [2024-06-28 01:55:34,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 473 transitions, 7452 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-28 01:55:34,236 INFO L231 Difference]: Finished difference. Result has 191 places, 383 transitions, 6574 flow [2024-06-28 01:55:34,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5165, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6574, PETRI_PLACES=191, PETRI_TRANSITIONS=383} [2024-06-28 01:55:34,237 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 137 predicate places. [2024-06-28 01:55:34,237 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 383 transitions, 6574 flow [2024-06-28 01:55:34,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:34,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:34,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:34,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:55:34,238 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:34,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:34,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1024215074, now seen corresponding path program 5 times [2024-06-28 01:55:34,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:34,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463853295] [2024-06-28 01:55:34,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:34,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:37,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:37,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:37,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463853295] [2024-06-28 01:55:37,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463853295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:37,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:37,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:55:37,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305655518] [2024-06-28 01:55:37,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:37,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:55:37,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:37,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:55:37,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:55:37,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:55:37,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 383 transitions, 6574 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:37,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:37,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:55:37,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:40,013 INFO L124 PetriNetUnfolderBase]: 7546/11788 cut-off events. [2024-06-28 01:55:40,013 INFO L125 PetriNetUnfolderBase]: For 279666/279686 co-relation queries the response was YES. [2024-06-28 01:55:40,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85119 conditions, 11788 events. 7546/11788 cut-off events. For 279666/279686 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 72990 event pairs, 1973 based on Foata normal form. 20/11468 useless extension candidates. Maximal degree in co-relation 85028. Up to 10099 conditions per place. [2024-06-28 01:55:40,155 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 389 selfloop transitions, 84 changer transitions 0/479 dead transitions. [2024-06-28 01:55:40,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 479 transitions, 8244 flow [2024-06-28 01:55:40,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:55:40,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:55:40,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-28 01:55:40,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48842592592592593 [2024-06-28 01:55:40,156 INFO L175 Difference]: Start difference. First operand has 191 places, 383 transitions, 6574 flow. Second operand 9 states and 211 transitions. [2024-06-28 01:55:40,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 479 transitions, 8244 flow [2024-06-28 01:55:41,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 479 transitions, 7965 flow, removed 133 selfloop flow, removed 2 redundant places. [2024-06-28 01:55:41,215 INFO L231 Difference]: Finished difference. Result has 199 places, 403 transitions, 6888 flow [2024-06-28 01:55:41,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6389, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6888, PETRI_PLACES=199, PETRI_TRANSITIONS=403} [2024-06-28 01:55:41,216 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 145 predicate places. [2024-06-28 01:55:41,216 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 403 transitions, 6888 flow [2024-06-28 01:55:41,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:41,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:41,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:41,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:55:41,216 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:41,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:41,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1836381052, now seen corresponding path program 4 times [2024-06-28 01:55:41,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:41,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581223721] [2024-06-28 01:55:41,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:41,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:44,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:44,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:44,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581223721] [2024-06-28 01:55:44,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581223721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:44,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:44,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:55:44,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197634047] [2024-06-28 01:55:44,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:44,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:55:44,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:44,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:55:44,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:55:44,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:55:44,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 403 transitions, 6888 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:44,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:44,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:55:44,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:47,520 INFO L124 PetriNetUnfolderBase]: 7612/11909 cut-off events. [2024-06-28 01:55:47,521 INFO L125 PetriNetUnfolderBase]: For 292347/292351 co-relation queries the response was YES. [2024-06-28 01:55:47,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86693 conditions, 11909 events. 7612/11909 cut-off events. For 292347/292351 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 73974 event pairs, 2041 based on Foata normal form. 4/11567 useless extension candidates. Maximal degree in co-relation 86599. Up to 10339 conditions per place. [2024-06-28 01:55:47,638 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 359 selfloop transitions, 129 changer transitions 0/494 dead transitions. [2024-06-28 01:55:47,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 494 transitions, 8574 flow [2024-06-28 01:55:47,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:55:47,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:55:47,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-28 01:55:47,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023148148148148 [2024-06-28 01:55:47,639 INFO L175 Difference]: Start difference. First operand has 199 places, 403 transitions, 6888 flow. Second operand 9 states and 217 transitions. [2024-06-28 01:55:47,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 494 transitions, 8574 flow [2024-06-28 01:55:48,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 494 transitions, 8405 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-28 01:55:48,347 INFO L231 Difference]: Finished difference. Result has 205 places, 421 transitions, 7451 flow [2024-06-28 01:55:48,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6722, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7451, PETRI_PLACES=205, PETRI_TRANSITIONS=421} [2024-06-28 01:55:48,348 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 151 predicate places. [2024-06-28 01:55:48,348 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 421 transitions, 7451 flow [2024-06-28 01:55:48,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:48,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:48,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:48,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:55:48,348 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:48,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:48,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1530976324, now seen corresponding path program 5 times [2024-06-28 01:55:48,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:48,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234314912] [2024-06-28 01:55:48,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:48,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:51,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:51,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234314912] [2024-06-28 01:55:51,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234314912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:51,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:51,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:55:51,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990828144] [2024-06-28 01:55:51,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:51,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:55:51,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:51,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:55:51,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:55:51,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:55:51,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 421 transitions, 7451 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:51,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:51,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:55:51,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:55:54,434 INFO L124 PetriNetUnfolderBase]: 7626/11924 cut-off events. [2024-06-28 01:55:54,434 INFO L125 PetriNetUnfolderBase]: For 311676/311696 co-relation queries the response was YES. [2024-06-28 01:55:54,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88018 conditions, 11924 events. 7626/11924 cut-off events. For 311676/311696 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 74014 event pairs, 1972 based on Foata normal form. 40/11619 useless extension candidates. Maximal degree in co-relation 87920. Up to 10046 conditions per place. [2024-06-28 01:55:54,556 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 413 selfloop transitions, 112 changer transitions 0/531 dead transitions. [2024-06-28 01:55:54,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 531 transitions, 9444 flow [2024-06-28 01:55:54,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:55:54,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:55:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 260 transitions. [2024-06-28 01:55:54,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2024-06-28 01:55:54,565 INFO L175 Difference]: Start difference. First operand has 205 places, 421 transitions, 7451 flow. Second operand 11 states and 260 transitions. [2024-06-28 01:55:54,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 531 transitions, 9444 flow [2024-06-28 01:55:55,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 531 transitions, 9006 flow, removed 114 selfloop flow, removed 4 redundant places. [2024-06-28 01:55:55,323 INFO L231 Difference]: Finished difference. Result has 216 places, 445 transitions, 7874 flow [2024-06-28 01:55:55,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7045, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7874, PETRI_PLACES=216, PETRI_TRANSITIONS=445} [2024-06-28 01:55:55,324 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 162 predicate places. [2024-06-28 01:55:55,324 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 445 transitions, 7874 flow [2024-06-28 01:55:55,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:55,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:55,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:55,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:55:55,325 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:55,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:55,325 INFO L85 PathProgramCache]: Analyzing trace with hash -243097466, now seen corresponding path program 1 times [2024-06-28 01:55:55,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:55,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309483456] [2024-06-28 01:55:55,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:55,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:55:58,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:58,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309483456] [2024-06-28 01:55:58,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309483456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:58,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:58,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:55:58,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780576813] [2024-06-28 01:55:58,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:58,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:55:58,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:58,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:55:58,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:55:58,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:55:58,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 445 transitions, 7874 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:58,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:58,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:55:58,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:01,319 INFO L124 PetriNetUnfolderBase]: 7676/11977 cut-off events. [2024-06-28 01:56:01,319 INFO L125 PetriNetUnfolderBase]: For 311281/311301 co-relation queries the response was YES. [2024-06-28 01:56:01,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88892 conditions, 11977 events. 7676/11977 cut-off events. For 311281/311301 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 74140 event pairs, 1782 based on Foata normal form. 20/11659 useless extension candidates. Maximal degree in co-relation 88789. Up to 10327 conditions per place. [2024-06-28 01:56:01,452 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 393 selfloop transitions, 102 changer transitions 0/501 dead transitions. [2024-06-28 01:56:01,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 501 transitions, 9346 flow [2024-06-28 01:56:01,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:56:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:56:01,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:56:01,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-28 01:56:01,454 INFO L175 Difference]: Start difference. First operand has 216 places, 445 transitions, 7874 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:56:01,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 501 transitions, 9346 flow [2024-06-28 01:56:02,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 501 transitions, 9186 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 01:56:02,261 INFO L231 Difference]: Finished difference. Result has 219 places, 449 transitions, 8033 flow [2024-06-28 01:56:02,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7714, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8033, PETRI_PLACES=219, PETRI_TRANSITIONS=449} [2024-06-28 01:56:02,262 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 165 predicate places. [2024-06-28 01:56:02,262 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 449 transitions, 8033 flow [2024-06-28 01:56:02,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:02,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:02,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:02,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:56:02,262 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:02,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:02,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1865914984, now seen corresponding path program 2 times [2024-06-28 01:56:02,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:02,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903506032] [2024-06-28 01:56:02,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:02,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:04,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:04,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:04,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903506032] [2024-06-28 01:56:04,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903506032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:04,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:04,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:56:04,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113401061] [2024-06-28 01:56:04,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:04,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:56:04,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:04,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:56:04,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:56:04,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:56:04,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 449 transitions, 8033 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:04,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:04,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:56:04,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:08,515 INFO L124 PetriNetUnfolderBase]: 7668/11983 cut-off events. [2024-06-28 01:56:08,516 INFO L125 PetriNetUnfolderBase]: For 318745/318765 co-relation queries the response was YES. [2024-06-28 01:56:08,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88939 conditions, 11983 events. 7668/11983 cut-off events. For 318745/318765 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 74416 event pairs, 1972 based on Foata normal form. 20/11659 useless extension candidates. Maximal degree in co-relation 88835. Up to 10475 conditions per place. [2024-06-28 01:56:08,706 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 382 selfloop transitions, 111 changer transitions 0/499 dead transitions. [2024-06-28 01:56:08,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 499 transitions, 9277 flow [2024-06-28 01:56:08,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:56:08,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:56:08,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 01:56:08,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-28 01:56:08,707 INFO L175 Difference]: Start difference. First operand has 219 places, 449 transitions, 8033 flow. Second operand 7 states and 166 transitions. [2024-06-28 01:56:08,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 499 transitions, 9277 flow [2024-06-28 01:56:09,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 499 transitions, 9116 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 01:56:09,711 INFO L231 Difference]: Finished difference. Result has 223 places, 449 transitions, 8108 flow [2024-06-28 01:56:09,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7872, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8108, PETRI_PLACES=223, PETRI_TRANSITIONS=449} [2024-06-28 01:56:09,711 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 169 predicate places. [2024-06-28 01:56:09,711 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 449 transitions, 8108 flow [2024-06-28 01:56:09,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:09,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:09,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:09,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:56:09,712 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:09,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:09,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1865915232, now seen corresponding path program 1 times [2024-06-28 01:56:09,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:09,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992298106] [2024-06-28 01:56:09,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:09,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:12,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:12,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:12,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992298106] [2024-06-28 01:56:12,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992298106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:12,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:12,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:56:12,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490649019] [2024-06-28 01:56:12,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:12,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:56:12,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:12,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:56:12,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:56:12,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:56:12,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 449 transitions, 8108 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:12,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:12,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:56:12,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:15,169 INFO L124 PetriNetUnfolderBase]: 7653/11953 cut-off events. [2024-06-28 01:56:15,170 INFO L125 PetriNetUnfolderBase]: For 318589/318609 co-relation queries the response was YES. [2024-06-28 01:56:15,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88898 conditions, 11953 events. 7653/11953 cut-off events. For 318589/318609 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 74127 event pairs, 1962 based on Foata normal form. 18/11626 useless extension candidates. Maximal degree in co-relation 88792. Up to 10352 conditions per place. [2024-06-28 01:56:15,321 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 354 selfloop transitions, 148 changer transitions 0/508 dead transitions. [2024-06-28 01:56:15,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 508 transitions, 9593 flow [2024-06-28 01:56:15,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:56:15,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:56:15,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 01:56:15,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:56:15,322 INFO L175 Difference]: Start difference. First operand has 223 places, 449 transitions, 8108 flow. Second operand 7 states and 168 transitions. [2024-06-28 01:56:15,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 508 transitions, 9593 flow [2024-06-28 01:56:16,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 508 transitions, 9112 flow, removed 126 selfloop flow, removed 6 redundant places. [2024-06-28 01:56:16,407 INFO L231 Difference]: Finished difference. Result has 224 places, 454 transitions, 8153 flow [2024-06-28 01:56:16,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7651, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8153, PETRI_PLACES=224, PETRI_TRANSITIONS=454} [2024-06-28 01:56:16,408 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 170 predicate places. [2024-06-28 01:56:16,408 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 454 transitions, 8153 flow [2024-06-28 01:56:16,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:16,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:16,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:16,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:56:16,409 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:16,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:16,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1891793036, now seen corresponding path program 1 times [2024-06-28 01:56:16,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:16,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781604818] [2024-06-28 01:56:16,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:16,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:18,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:18,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781604818] [2024-06-28 01:56:18,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781604818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:18,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:18,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:56:18,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229686152] [2024-06-28 01:56:18,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:18,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:56:18,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:18,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:56:18,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:56:18,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:56:18,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 454 transitions, 8153 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:18,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:18,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:56:18,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:22,521 INFO L124 PetriNetUnfolderBase]: 8091/12618 cut-off events. [2024-06-28 01:56:22,521 INFO L125 PetriNetUnfolderBase]: For 379794/379836 co-relation queries the response was YES. [2024-06-28 01:56:22,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95395 conditions, 12618 events. 8091/12618 cut-off events. For 379794/379836 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 78817 event pairs, 1688 based on Foata normal form. 50/12328 useless extension candidates. Maximal degree in co-relation 95288. Up to 8889 conditions per place. [2024-06-28 01:56:22,682 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 303 selfloop transitions, 243 changer transitions 0/552 dead transitions. [2024-06-28 01:56:22,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 552 transitions, 10065 flow [2024-06-28 01:56:22,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:56:22,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:56:22,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 01:56:22,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393518518518519 [2024-06-28 01:56:22,684 INFO L175 Difference]: Start difference. First operand has 224 places, 454 transitions, 8153 flow. Second operand 9 states and 233 transitions. [2024-06-28 01:56:22,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 552 transitions, 10065 flow [2024-06-28 01:56:23,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 552 transitions, 9780 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-28 01:56:23,731 INFO L231 Difference]: Finished difference. Result has 229 places, 456 transitions, 8446 flow [2024-06-28 01:56:23,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7868, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8446, PETRI_PLACES=229, PETRI_TRANSITIONS=456} [2024-06-28 01:56:23,732 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 175 predicate places. [2024-06-28 01:56:23,732 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 456 transitions, 8446 flow [2024-06-28 01:56:23,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:23,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:23,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:23,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:56:23,733 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:23,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:23,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1974819716, now seen corresponding path program 2 times [2024-06-28 01:56:23,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:23,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372945653] [2024-06-28 01:56:23,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:23,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:26,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:26,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:26,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372945653] [2024-06-28 01:56:26,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372945653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:26,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:26,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:56:26,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418655027] [2024-06-28 01:56:26,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:26,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:56:26,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:26,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:56:26,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:56:26,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:56:26,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 456 transitions, 8446 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:26,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:26,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:56:26,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:29,952 INFO L124 PetriNetUnfolderBase]: 8317/13018 cut-off events. [2024-06-28 01:56:29,952 INFO L125 PetriNetUnfolderBase]: For 416175/416217 co-relation queries the response was YES. [2024-06-28 01:56:30,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99879 conditions, 13018 events. 8317/13018 cut-off events. For 416175/416217 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 82100 event pairs, 2188 based on Foata normal form. 54/12714 useless extension candidates. Maximal degree in co-relation 99771. Up to 10320 conditions per place. [2024-06-28 01:56:30,130 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 302 selfloop transitions, 239 changer transitions 0/547 dead transitions. [2024-06-28 01:56:30,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 547 transitions, 10146 flow [2024-06-28 01:56:30,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:56:30,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:56:30,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-28 01:56:30,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 01:56:30,132 INFO L175 Difference]: Start difference. First operand has 229 places, 456 transitions, 8446 flow. Second operand 9 states and 228 transitions. [2024-06-28 01:56:30,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 547 transitions, 10146 flow [2024-06-28 01:56:31,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 547 transitions, 9815 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 01:56:31,306 INFO L231 Difference]: Finished difference. Result has 233 places, 457 transitions, 8646 flow [2024-06-28 01:56:31,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8119, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8646, PETRI_PLACES=233, PETRI_TRANSITIONS=457} [2024-06-28 01:56:31,306 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 179 predicate places. [2024-06-28 01:56:31,307 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 457 transitions, 8646 flow [2024-06-28 01:56:31,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:31,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:31,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:31,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:56:31,307 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:31,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:31,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1974823436, now seen corresponding path program 3 times [2024-06-28 01:56:31,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:31,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449904447] [2024-06-28 01:56:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:31,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:33,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:33,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:33,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449904447] [2024-06-28 01:56:33,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449904447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:33,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:33,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:56:33,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617496378] [2024-06-28 01:56:33,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:33,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:56:33,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:33,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:56:33,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:56:33,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:56:33,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 457 transitions, 8646 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:33,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:33,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:56:33,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:37,501 INFO L124 PetriNetUnfolderBase]: 8493/13290 cut-off events. [2024-06-28 01:56:37,502 INFO L125 PetriNetUnfolderBase]: For 424893/424935 co-relation queries the response was YES. [2024-06-28 01:56:37,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102655 conditions, 13290 events. 8493/13290 cut-off events. For 424893/424935 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 84194 event pairs, 2158 based on Foata normal form. 50/12982 useless extension candidates. Maximal degree in co-relation 102545. Up to 10311 conditions per place. [2024-06-28 01:56:37,690 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 306 selfloop transitions, 240 changer transitions 0/552 dead transitions. [2024-06-28 01:56:37,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 552 transitions, 10388 flow [2024-06-28 01:56:37,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:56:37,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:56:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-28 01:56:37,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-06-28 01:56:37,691 INFO L175 Difference]: Start difference. First operand has 233 places, 457 transitions, 8646 flow. Second operand 9 states and 232 transitions. [2024-06-28 01:56:37,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 552 transitions, 10388 flow [2024-06-28 01:56:39,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 552 transitions, 9905 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 01:56:39,030 INFO L231 Difference]: Finished difference. Result has 235 places, 458 transitions, 8693 flow [2024-06-28 01:56:39,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8163, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8693, PETRI_PLACES=235, PETRI_TRANSITIONS=458} [2024-06-28 01:56:39,031 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 181 predicate places. [2024-06-28 01:56:39,031 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 458 transitions, 8693 flow [2024-06-28 01:56:39,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:39,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:39,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:39,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:56:39,031 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:39,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:39,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1887983756, now seen corresponding path program 4 times [2024-06-28 01:56:39,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:39,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584990287] [2024-06-28 01:56:39,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:39,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:42,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:42,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:42,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584990287] [2024-06-28 01:56:42,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584990287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:42,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:42,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:56:42,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682917295] [2024-06-28 01:56:42,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:42,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:56:42,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:42,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:56:42,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:56:42,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:56:42,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 458 transitions, 8693 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:42,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:42,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:56:42,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:46,105 INFO L124 PetriNetUnfolderBase]: 8769/13659 cut-off events. [2024-06-28 01:56:46,105 INFO L125 PetriNetUnfolderBase]: For 454043/454063 co-relation queries the response was YES. [2024-06-28 01:56:46,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106680 conditions, 13659 events. 8769/13659 cut-off events. For 454043/454063 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 86787 event pairs, 2223 based on Foata normal form. 40/13356 useless extension candidates. Maximal degree in co-relation 106569. Up to 11921 conditions per place. [2024-06-28 01:56:46,463 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 479 selfloop transitions, 42 changer transitions 0/527 dead transitions. [2024-06-28 01:56:46,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 527 transitions, 10157 flow [2024-06-28 01:56:46,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:56:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:56:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 01:56:46,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-06-28 01:56:46,465 INFO L175 Difference]: Start difference. First operand has 235 places, 458 transitions, 8693 flow. Second operand 8 states and 193 transitions. [2024-06-28 01:56:46,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 527 transitions, 10157 flow [2024-06-28 01:56:47,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 527 transitions, 9663 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 01:56:47,637 INFO L231 Difference]: Finished difference. Result has 236 places, 459 transitions, 8340 flow [2024-06-28 01:56:47,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8199, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8340, PETRI_PLACES=236, PETRI_TRANSITIONS=459} [2024-06-28 01:56:47,638 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 182 predicate places. [2024-06-28 01:56:47,638 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 459 transitions, 8340 flow [2024-06-28 01:56:47,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:47,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:47,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:47,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:56:47,639 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:47,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:47,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1888131626, now seen corresponding path program 5 times [2024-06-28 01:56:47,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:47,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503160464] [2024-06-28 01:56:47,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:47,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:51,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:51,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503160464] [2024-06-28 01:56:51,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503160464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:51,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:51,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:56:51,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447387277] [2024-06-28 01:56:51,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:51,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:56:51,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:51,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:56:51,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:56:51,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:56:51,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 459 transitions, 8340 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:51,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:51,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:56:51,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:55,776 INFO L124 PetriNetUnfolderBase]: 9007/14005 cut-off events. [2024-06-28 01:56:55,776 INFO L125 PetriNetUnfolderBase]: For 467624/467666 co-relation queries the response was YES. [2024-06-28 01:56:55,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108905 conditions, 14005 events. 9007/14005 cut-off events. For 467624/467666 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 89331 event pairs, 2270 based on Foata normal form. 54/13727 useless extension candidates. Maximal degree in co-relation 108793. Up to 11724 conditions per place. [2024-06-28 01:56:55,952 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 462 selfloop transitions, 84 changer transitions 0/552 dead transitions. [2024-06-28 01:56:55,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 552 transitions, 10092 flow [2024-06-28 01:56:55,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:56:55,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:56:55,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 01:56:55,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-28 01:56:55,954 INFO L175 Difference]: Start difference. First operand has 236 places, 459 transitions, 8340 flow. Second operand 9 states and 224 transitions. [2024-06-28 01:56:55,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 552 transitions, 10092 flow [2024-06-28 01:56:56,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 552 transitions, 9990 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:56:57,158 INFO L231 Difference]: Finished difference. Result has 241 places, 464 transitions, 8578 flow [2024-06-28 01:56:57,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8253, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8578, PETRI_PLACES=241, PETRI_TRANSITIONS=464} [2024-06-28 01:56:57,169 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 187 predicate places. [2024-06-28 01:56:57,169 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 464 transitions, 8578 flow [2024-06-28 01:56:57,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:57,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:57,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:57,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:56:57,170 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:57,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:57,171 INFO L85 PathProgramCache]: Analyzing trace with hash 741170082, now seen corresponding path program 1 times [2024-06-28 01:56:57,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:57,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985118881] [2024-06-28 01:56:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:57,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:00,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:00,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985118881] [2024-06-28 01:57:00,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985118881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:00,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:00,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:57:00,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350486488] [2024-06-28 01:57:00,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:00,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:57:00,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:00,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:57:00,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:57:00,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:57:00,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 464 transitions, 8578 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:00,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:00,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:57:00,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:04,390 INFO L124 PetriNetUnfolderBase]: 9104/14350 cut-off events. [2024-06-28 01:57:04,390 INFO L125 PetriNetUnfolderBase]: For 466826/466846 co-relation queries the response was YES. [2024-06-28 01:57:04,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110922 conditions, 14350 events. 9104/14350 cut-off events. For 466826/466846 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 92895 event pairs, 2233 based on Foata normal form. 20/13969 useless extension candidates. Maximal degree in co-relation 110807. Up to 12569 conditions per place. [2024-06-28 01:57:04,570 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 401 selfloop transitions, 128 changer transitions 0/535 dead transitions. [2024-06-28 01:57:04,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 535 transitions, 10189 flow [2024-06-28 01:57:04,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:57:04,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:57:04,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 01:57:04,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-28 01:57:04,571 INFO L175 Difference]: Start difference. First operand has 241 places, 464 transitions, 8578 flow. Second operand 8 states and 190 transitions. [2024-06-28 01:57:04,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 535 transitions, 10189 flow [2024-06-28 01:57:05,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 535 transitions, 10015 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 01:57:06,003 INFO L231 Difference]: Finished difference. Result has 245 places, 474 transitions, 8925 flow [2024-06-28 01:57:06,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8404, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8925, PETRI_PLACES=245, PETRI_TRANSITIONS=474} [2024-06-28 01:57:06,004 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 191 predicate places. [2024-06-28 01:57:06,004 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 474 transitions, 8925 flow [2024-06-28 01:57:06,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:06,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:06,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:06,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:57:06,005 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:06,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:06,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1691612656, now seen corresponding path program 2 times [2024-06-28 01:57:06,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:06,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625582318] [2024-06-28 01:57:06,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:06,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:09,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:09,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625582318] [2024-06-28 01:57:09,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625582318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:09,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:09,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:57:09,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190911808] [2024-06-28 01:57:09,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:09,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:57:09,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:09,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:57:09,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:57:09,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:57:09,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 474 transitions, 8925 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:09,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:09,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:57:09,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:13,734 INFO L124 PetriNetUnfolderBase]: 9167/14476 cut-off events. [2024-06-28 01:57:13,735 INFO L125 PetriNetUnfolderBase]: For 478230/478250 co-relation queries the response was YES. [2024-06-28 01:57:13,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112654 conditions, 14476 events. 9167/14476 cut-off events. For 478230/478250 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 94174 event pairs, 2429 based on Foata normal form. 20/14084 useless extension candidates. Maximal degree in co-relation 112537. Up to 12658 conditions per place. [2024-06-28 01:57:13,902 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 389 selfloop transitions, 148 changer transitions 0/543 dead transitions. [2024-06-28 01:57:13,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 543 transitions, 10563 flow [2024-06-28 01:57:13,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:57:13,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:57:13,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 01:57:13,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-28 01:57:13,905 INFO L175 Difference]: Start difference. First operand has 245 places, 474 transitions, 8925 flow. Second operand 8 states and 190 transitions. [2024-06-28 01:57:13,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 543 transitions, 10563 flow [2024-06-28 01:57:15,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 543 transitions, 10196 flow, removed 63 selfloop flow, removed 5 redundant places. [2024-06-28 01:57:15,038 INFO L231 Difference]: Finished difference. Result has 248 places, 480 transitions, 9078 flow [2024-06-28 01:57:15,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8558, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9078, PETRI_PLACES=248, PETRI_TRANSITIONS=480} [2024-06-28 01:57:15,039 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 194 predicate places. [2024-06-28 01:57:15,039 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 480 transitions, 9078 flow [2024-06-28 01:57:15,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:15,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:15,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:15,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:57:15,040 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:15,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:15,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1686042514, now seen corresponding path program 6 times [2024-06-28 01:57:15,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:15,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322932723] [2024-06-28 01:57:15,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:15,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:18,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:18,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:18,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322932723] [2024-06-28 01:57:18,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322932723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:18,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:18,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:57:18,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451985522] [2024-06-28 01:57:18,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:18,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:57:18,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:18,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:57:18,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:57:18,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:57:18,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 480 transitions, 9078 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:18,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:18,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:57:18,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:23,051 INFO L124 PetriNetUnfolderBase]: 9631/15003 cut-off events. [2024-06-28 01:57:23,051 INFO L125 PetriNetUnfolderBase]: For 556643/556663 co-relation queries the response was YES. [2024-06-28 01:57:23,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119560 conditions, 15003 events. 9631/15003 cut-off events. For 556643/556663 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 96864 event pairs, 2498 based on Foata normal form. 52/14702 useless extension candidates. Maximal degree in co-relation 119442. Up to 12952 conditions per place. [2024-06-28 01:57:23,228 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 491 selfloop transitions, 70 changer transitions 0/567 dead transitions. [2024-06-28 01:57:23,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 567 transitions, 10790 flow [2024-06-28 01:57:23,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:57:23,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:57:23,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-28 01:57:23,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-28 01:57:23,229 INFO L175 Difference]: Start difference. First operand has 248 places, 480 transitions, 9078 flow. Second operand 9 states and 213 transitions. [2024-06-28 01:57:23,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 567 transitions, 10790 flow [2024-06-28 01:57:24,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 567 transitions, 10380 flow, removed 64 selfloop flow, removed 6 redundant places. [2024-06-28 01:57:24,647 INFO L231 Difference]: Finished difference. Result has 252 places, 487 transitions, 8998 flow [2024-06-28 01:57:24,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8668, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8998, PETRI_PLACES=252, PETRI_TRANSITIONS=487} [2024-06-28 01:57:24,648 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 198 predicate places. [2024-06-28 01:57:24,648 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 487 transitions, 8998 flow [2024-06-28 01:57:24,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:24,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:24,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:24,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:57:24,649 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:24,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:24,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1691404894, now seen corresponding path program 7 times [2024-06-28 01:57:24,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:24,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354790338] [2024-06-28 01:57:24,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:24,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:27,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:27,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:27,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354790338] [2024-06-28 01:57:27,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354790338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:27,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:27,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:57:27,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721043390] [2024-06-28 01:57:27,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:27,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:57:27,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:27,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:57:27,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:57:27,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:57:27,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 487 transitions, 8998 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:27,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:27,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:57:27,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:31,835 INFO L124 PetriNetUnfolderBase]: 9827/15370 cut-off events. [2024-06-28 01:57:31,835 INFO L125 PetriNetUnfolderBase]: For 577936/577956 co-relation queries the response was YES. [2024-06-28 01:57:31,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122809 conditions, 15370 events. 9827/15370 cut-off events. For 577936/577956 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 100166 event pairs, 2601 based on Foata normal form. 36/15030 useless extension candidates. Maximal degree in co-relation 122689. Up to 13521 conditions per place. [2024-06-28 01:57:32,017 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 432 selfloop transitions, 124 changer transitions 0/562 dead transitions. [2024-06-28 01:57:32,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 562 transitions, 10654 flow [2024-06-28 01:57:32,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:57:32,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:57:32,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 239 transitions. [2024-06-28 01:57:32,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45265151515151514 [2024-06-28 01:57:32,018 INFO L175 Difference]: Start difference. First operand has 252 places, 487 transitions, 8998 flow. Second operand 11 states and 239 transitions. [2024-06-28 01:57:32,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 562 transitions, 10654 flow [2024-06-28 01:57:33,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 562 transitions, 10478 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 01:57:33,462 INFO L231 Difference]: Finished difference. Result has 259 places, 498 transitions, 9410 flow [2024-06-28 01:57:33,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8822, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9410, PETRI_PLACES=259, PETRI_TRANSITIONS=498} [2024-06-28 01:57:33,463 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 205 predicate places. [2024-06-28 01:57:33,463 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 498 transitions, 9410 flow [2024-06-28 01:57:33,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:33,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:33,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:33,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:57:33,464 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:33,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:33,464 INFO L85 PathProgramCache]: Analyzing trace with hash 738417860, now seen corresponding path program 8 times [2024-06-28 01:57:33,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:33,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21715422] [2024-06-28 01:57:33,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:33,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat