./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe006_power.opt-thin000_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-rel/safe006_power.opt-thin000_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/safe006_power.opt-thin000_power.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe006_power.opt-thin000_power.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:38:48,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:38:48,092 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:38:48,096 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:38:48,096 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:38:48,118 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:38:48,119 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:38:48,119 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:38:48,119 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:38:48,122 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:38:48,123 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:38:48,123 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:38:48,123 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:38:48,124 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:38:48,125 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:38:48,125 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:38:48,125 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:38:48,125 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:38:48,125 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:38:48,126 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:38:48,126 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:38:48,126 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:38:48,126 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:38:48,127 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:38:48,127 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:38:48,127 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:38:48,127 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:38:48,127 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:38:48,128 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:38:48,128 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:38:48,129 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:38:48,129 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:38:48,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:38:48,129 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:38:48,129 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:38:48,130 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:38:48,130 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:38:48,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:38:48,130 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:38:48,130 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:38:48,130 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:38:48,131 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:38:48,131 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:38:48,131 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:38:48,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:38:48,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:38:48,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:38:48,392 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:38:48,392 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:38:48,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_power.opt-thin000_power.opt.i [2024-06-27 22:38:49,447 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:38:49,638 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:38:49,638 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_power.opt-thin000_power.opt.i [2024-06-27 22:38:49,651 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e629a99d/2f1d961087844fbb947de15bd781fe3d/FLAGfb7c881ea [2024-06-27 22:38:49,661 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e629a99d/2f1d961087844fbb947de15bd781fe3d [2024-06-27 22:38:49,663 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:38:49,664 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:38:49,664 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe006_power.opt-thin000_power.opt.yml/witness.yml [2024-06-27 22:38:49,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:38:49,719 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:38:49,720 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:38:49,720 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:38:49,724 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:38:49,724 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:38:49" (1/2) ... [2024-06-27 22:38:49,725 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532e846d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:38:49, skipping insertion in model container [2024-06-27 22:38:49,725 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:38:49" (1/2) ... [2024-06-27 22:38:49,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4c7e68a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:38:49, skipping insertion in model container [2024-06-27 22:38:49,726 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:38:49" (2/2) ... [2024-06-27 22:38:49,727 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532e846d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:38:49, skipping insertion in model container [2024-06-27 22:38:49,727 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:38:49" (2/2) ... [2024-06-27 22:38:49,727 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:38:49,744 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:38:49,746 INFO L97 edCorrectnessWitness]: Location invariant before [L828-L828] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )y >= 0LL && (0LL - (long long )x) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )x) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )x) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )x) + (long long )y >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )y >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$read_delayed) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )x$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )x >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )x >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )x >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )x) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )x) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )x) - (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x) - (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x) - (long long )x$read_delayed >= 0LL) && (1LL - (long long )x$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )x) - (long long )x$mem_tmp >= 0LL) && (2LL - (long long )x) - (long long )x$r_buff0_thd1 >= 0LL) && (2LL - (long long )x) - (long long )x$r_buff1_thd1 >= 0LL) && (2LL - (long long )x) - (long long )x$w_buff0 >= 0LL) && (2LL - (long long )x) - (long long )x$w_buff0_used >= 0LL) && (2LL - (long long )x) - (long long )x$w_buff1 >= 0LL) && (2LL - (long long )x) - (long long )x$w_buff1_used >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd1 >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd1 >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$w_buff0 >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$w_buff0_used >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$w_buff1 >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$w_buff1_used >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:38:49,746 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )y >= 0LL && (0LL - (long long )x) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )x) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )x) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )x) + (long long )y >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )x$mem_tmp) + (long long )y >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$read_delayed) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )x$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )x >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )x >= 0LL) && (1LL + (long long )weak$$choice1) - (long long )x$mem_tmp >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )x >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$mem_tmp) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff0_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$r_buff1_thd2) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff0_used) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX$w_buff1_used) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )x) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )x) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )x) - (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x) - (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x) - (long long )x$read_delayed >= 0LL) && (1LL - (long long )x$flush_delayed) - (long long )x$mem_tmp >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )x$mem_tmp) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )x) - (long long )x$mem_tmp >= 0LL) && (2LL - (long long )x) - (long long )x$r_buff0_thd1 >= 0LL) && (2LL - (long long )x) - (long long )x$r_buff1_thd1 >= 0LL) && (2LL - (long long )x) - (long long )x$w_buff0 >= 0LL) && (2LL - (long long )x) - (long long )x$w_buff0_used >= 0LL) && (2LL - (long long )x) - (long long )x$w_buff1 >= 0LL) && (2LL - (long long )x) - (long long )x$w_buff1_used >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$r_buff0_thd1 >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$r_buff1_thd1 >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$w_buff0 >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$w_buff0_used >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$w_buff1 >= 0LL) && (2LL - (long long )x$mem_tmp) - (long long )x$w_buff1_used >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:38:49,746 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:38:49,746 INFO L106 edCorrectnessWitness]: ghost_update [L826-L826] multithreaded = 1; [2024-06-27 22:38:49,770 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:38:49,877 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/safe006_power.opt-thin000_power.opt.i[969,982] [2024-06-27 22:38:49,983 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:38:49,990 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:38:50,029 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/safe006_power.opt-thin000_power.opt.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:38:50,236 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:38:50,268 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:38:50,269 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:38:50 WrapperNode [2024-06-27 22:38:50,269 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:38:50,270 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:38:50,270 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:38:50,270 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:38:50,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:38:50" (1/1) ... [2024-06-27 22:38:50,290 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:38:50" (1/1) ... [2024-06-27 22:38:50,396 INFO L138 Inliner]: procedures = 174, calls = 168, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 517 [2024-06-27 22:38:50,397 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:38:50,397 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:38:50,397 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:38:50,398 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:38:50,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:38:50" (1/1) ... [2024-06-27 22:38:50,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:38:50" (1/1) ... [2024-06-27 22:38:50,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:38:50" (1/1) ... [2024-06-27 22:38:50,432 INFO L175 MemorySlicer]: Split 136 memory accesses to 2 slices as follows [2, 134]. 99 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-27 22:38:50,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:38:50" (1/1) ... [2024-06-27 22:38:50,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:38:50" (1/1) ... [2024-06-27 22:38:50,446 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:38:50" (1/1) ... [2024-06-27 22:38:50,448 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:38:50" (1/1) ... [2024-06-27 22:38:50,450 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:38:50" (1/1) ... [2024-06-27 22:38:50,453 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:38:50" (1/1) ... [2024-06-27 22:38:50,458 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:38:50,459 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:38:50,459 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:38:50,459 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:38:50,460 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:38:50" (1/1) ... [2024-06-27 22:38:50,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:38:50,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:38:50,481 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 22:38:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 22:38:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 22:38:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 22:38:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 22:38:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:38:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:38:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:38:50,524 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:38:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:38:50,524 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:38:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:38:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 22:38:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:38:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:38:50,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:38:50,526 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:38:50,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 22:38:50,702 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:38:50,704 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:38:51,397 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:38:51,397 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:38:52,745 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:38:52,746 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:38:52,746 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:38:52 BoogieIcfgContainer [2024-06-27 22:38:52,746 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:38:52,749 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:38:52,749 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:38:52,752 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:38:52,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:38:49" (1/4) ... [2024-06-27 22:38:52,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42017e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:38:52, skipping insertion in model container [2024-06-27 22:38:52,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:38:49" (2/4) ... [2024-06-27 22:38:52,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42017e81 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:38:52, skipping insertion in model container [2024-06-27 22:38:52,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:38:50" (3/4) ... [2024-06-27 22:38:52,754 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42017e81 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:38:52, skipping insertion in model container [2024-06-27 22:38:52,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:38:52" (4/4) ... [2024-06-27 22:38:52,755 INFO L112 eAbstractionObserver]: Analyzing ICFG safe006_power.opt-thin000_power.opt.i [2024-06-27 22:38:52,770 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:38:52,770 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:38:52,770 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:38:52,817 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:38:52,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 80 flow [2024-06-27 22:38:52,875 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-06-27 22:38:52,875 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:38:52,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-27 22:38:52,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 36 transitions, 80 flow [2024-06-27 22:38:52,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 34 transitions, 74 flow [2024-06-27 22:38:52,887 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:38:52,893 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;@2b44a07d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:38:52,893 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:38:52,898 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:38:52,898 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 22:38:52,898 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:38:52,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:52,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:38:52,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:52,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:52,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1286479795, now seen corresponding path program 1 times [2024-06-27 22:38:52,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:52,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140443010] [2024-06-27 22:38:52,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:52,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:57,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:38:57,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:57,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140443010] [2024-06-27 22:38:57,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140443010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:57,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:57,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:38:57,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130677497] [2024-06-27 22:38:57,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:57,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:38:57,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:57,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:38:57,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:38:57,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:38:57,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:57,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:57,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:38:57,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:57,655 INFO L124 PetriNetUnfolderBase]: 563/944 cut-off events. [2024-06-27 22:38:57,655 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 22:38:57,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1897 conditions, 944 events. 563/944 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4610 event pairs, 225 based on Foata normal form. 35/888 useless extension candidates. Maximal degree in co-relation 1886. Up to 924 conditions per place. [2024-06-27 22:38:57,662 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 37 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2024-06-27 22:38:57,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 183 flow [2024-06-27 22:38:57,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:38:57,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:38:57,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-06-27 22:38:57,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 22:38:57,672 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 74 flow. Second operand 3 states and 72 transitions. [2024-06-27 22:38:57,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 183 flow [2024-06-27 22:38:57,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:38:57,676 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 93 flow [2024-06-27 22:38:57,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2024-06-27 22:38:57,680 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-06-27 22:38:57,680 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 93 flow [2024-06-27 22:38:57,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:38:57,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:57,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:57,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:38:57,681 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:57,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:57,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1538268697, now seen corresponding path program 1 times [2024-06-27 22:38:57,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:57,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931565997] [2024-06-27 22:38:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:57,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:01,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:01,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:01,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931565997] [2024-06-27 22:39:01,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931565997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:01,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:01,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:39:01,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329851772] [2024-06-27 22:39:01,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:01,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:39:01,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:01,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:39:01,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:39:01,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:39:01,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:01,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:01,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:39:01,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:01,554 INFO L124 PetriNetUnfolderBase]: 673/1239 cut-off events. [2024-06-27 22:39:01,554 INFO L125 PetriNetUnfolderBase]: For 137/139 co-relation queries the response was YES. [2024-06-27 22:39:01,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2616 conditions, 1239 events. 673/1239 cut-off events. For 137/139 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 6255 event pairs, 323 based on Foata normal form. 4/1150 useless extension candidates. Maximal degree in co-relation 2604. Up to 1065 conditions per place. [2024-06-27 22:39:01,561 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 48 selfloop transitions, 6 changer transitions 1/61 dead transitions. [2024-06-27 22:39:01,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 61 transitions, 267 flow [2024-06-27 22:39:01,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:39:01,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:39:01,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-06-27 22:39:01,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-06-27 22:39:01,565 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 93 flow. Second operand 4 states and 87 transitions. [2024-06-27 22:39:01,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 61 transitions, 267 flow [2024-06-27 22:39:01,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 61 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:39:01,568 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 139 flow [2024-06-27 22:39:01,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-06-27 22:39:01,569 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2024-06-27 22:39:01,569 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 139 flow [2024-06-27 22:39:01,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:01,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:01,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:01,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:39:01,577 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:01,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:01,579 INFO L85 PathProgramCache]: Analyzing trace with hash 441691187, now seen corresponding path program 1 times [2024-06-27 22:39:01,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:01,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65268912] [2024-06-27 22:39:01,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:01,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:05,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:05,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:05,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65268912] [2024-06-27 22:39:05,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65268912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:05,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:05,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:39:05,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572243693] [2024-06-27 22:39:05,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:05,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:39:05,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:05,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:39:05,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:39:05,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:39:05,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 139 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:05,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:05,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:39:05,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:06,083 INFO L124 PetriNetUnfolderBase]: 677/1242 cut-off events. [2024-06-27 22:39:06,084 INFO L125 PetriNetUnfolderBase]: For 422/428 co-relation queries the response was YES. [2024-06-27 22:39:06,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2865 conditions, 1242 events. 677/1242 cut-off events. For 422/428 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6283 event pairs, 265 based on Foata normal form. 8/1158 useless extension candidates. Maximal degree in co-relation 2850. Up to 1046 conditions per place. [2024-06-27 22:39:06,090 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 59 selfloop transitions, 8 changer transitions 2/75 dead transitions. [2024-06-27 22:39:06,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 75 transitions, 361 flow [2024-06-27 22:39:06,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:39:06,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:39:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-06-27 22:39:06,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6055555555555555 [2024-06-27 22:39:06,096 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 139 flow. Second operand 5 states and 109 transitions. [2024-06-27 22:39:06,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 75 transitions, 361 flow [2024-06-27 22:39:06,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 75 transitions, 354 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 22:39:06,099 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 167 flow [2024-06-27 22:39:06,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-06-27 22:39:06,101 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-06-27 22:39:06,101 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 167 flow [2024-06-27 22:39:06,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:06,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:06,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:06,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:39:06,102 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:06,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:06,103 INFO L85 PathProgramCache]: Analyzing trace with hash 807526776, now seen corresponding path program 1 times [2024-06-27 22:39:06,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:06,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667015587] [2024-06-27 22:39:06,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:06,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:10,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:10,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:10,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667015587] [2024-06-27 22:39:10,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667015587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:10,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:10,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:39:10,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892985938] [2024-06-27 22:39:10,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:10,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:39:10,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:10,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:39:10,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:39:10,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:39:10,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 167 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:10,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:10,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:39:10,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:10,560 INFO L124 PetriNetUnfolderBase]: 673/1228 cut-off events. [2024-06-27 22:39:10,560 INFO L125 PetriNetUnfolderBase]: For 693/699 co-relation queries the response was YES. [2024-06-27 22:39:10,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2992 conditions, 1228 events. 673/1228 cut-off events. For 693/699 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6181 event pairs, 197 based on Foata normal form. 10/1149 useless extension candidates. Maximal degree in co-relation 2975. Up to 958 conditions per place. [2024-06-27 22:39:10,566 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 67 selfloop transitions, 14 changer transitions 3/90 dead transitions. [2024-06-27 22:39:10,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 90 transitions, 453 flow [2024-06-27 22:39:10,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:39:10,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:39:10,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-27 22:39:10,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-06-27 22:39:10,569 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 167 flow. Second operand 6 states and 128 transitions. [2024-06-27 22:39:10,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 90 transitions, 453 flow [2024-06-27 22:39:10,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 90 transitions, 436 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 22:39:10,574 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 215 flow [2024-06-27 22:39:10,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=215, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-27 22:39:10,576 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 13 predicate places. [2024-06-27 22:39:10,576 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 215 flow [2024-06-27 22:39:10,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:10,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:10,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:10,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:39:10,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:10,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:10,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1883429290, now seen corresponding path program 1 times [2024-06-27 22:39:10,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:10,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557869022] [2024-06-27 22:39:10,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:10,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:16,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:16,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557869022] [2024-06-27 22:39:16,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557869022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:16,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:16,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:39:16,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608264959] [2024-06-27 22:39:16,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:16,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:39:16,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:16,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:39:16,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:39:16,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:39:16,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:16,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:16,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:39:16,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:17,681 INFO L124 PetriNetUnfolderBase]: 563/1020 cut-off events. [2024-06-27 22:39:17,681 INFO L125 PetriNetUnfolderBase]: For 1100/1100 co-relation queries the response was YES. [2024-06-27 22:39:17,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2800 conditions, 1020 events. 563/1020 cut-off events. For 1100/1100 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5279 event pairs, 174 based on Foata normal form. 2/945 useless extension candidates. Maximal degree in co-relation 2779. Up to 888 conditions per place. [2024-06-27 22:39:17,687 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 51 selfloop transitions, 11 changer transitions 0/68 dead transitions. [2024-06-27 22:39:17,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 68 transitions, 402 flow [2024-06-27 22:39:17,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:39:17,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:39:17,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-06-27 22:39:17,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-27 22:39:17,692 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 215 flow. Second operand 7 states and 111 transitions. [2024-06-27 22:39:17,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 68 transitions, 402 flow [2024-06-27 22:39:17,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 374 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 22:39:17,698 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 243 flow [2024-06-27 22:39:17,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=243, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2024-06-27 22:39:17,701 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 19 predicate places. [2024-06-27 22:39:17,701 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 243 flow [2024-06-27 22:39:17,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:17,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:17,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:17,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:39:17,701 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:17,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:17,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1744479849, now seen corresponding path program 1 times [2024-06-27 22:39:17,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:17,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787648968] [2024-06-27 22:39:17,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:17,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:17,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:17,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787648968] [2024-06-27 22:39:17,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787648968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:17,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:17,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:39:17,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736579246] [2024-06-27 22:39:17,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:17,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:39:17,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:17,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:39:17,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:39:17,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-06-27 22:39:17,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:17,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:17,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-06-27 22:39:17,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:18,055 INFO L124 PetriNetUnfolderBase]: 313/664 cut-off events. [2024-06-27 22:39:18,055 INFO L125 PetriNetUnfolderBase]: For 859/867 co-relation queries the response was YES. [2024-06-27 22:39:18,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1811 conditions, 664 events. 313/664 cut-off events. For 859/867 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3691 event pairs, 121 based on Foata normal form. 34/675 useless extension candidates. Maximal degree in co-relation 1788. Up to 460 conditions per place. [2024-06-27 22:39:18,059 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 43 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2024-06-27 22:39:18,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 379 flow [2024-06-27 22:39:18,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:39:18,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:39:18,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-06-27 22:39:18,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2024-06-27 22:39:18,060 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 243 flow. Second operand 3 states and 74 transitions. [2024-06-27 22:39:18,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 379 flow [2024-06-27 22:39:18,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 354 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 22:39:18,064 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 226 flow [2024-06-27 22:39:18,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-27 22:39:18,066 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 16 predicate places. [2024-06-27 22:39:18,066 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 226 flow [2024-06-27 22:39:18,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:18,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:18,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:18,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:39:18,067 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:18,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:18,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1744447395, now seen corresponding path program 1 times [2024-06-27 22:39:18,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:18,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928097630] [2024-06-27 22:39:18,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:18,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:23,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:23,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:23,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928097630] [2024-06-27 22:39:23,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928097630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:23,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:23,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:39:23,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606147907] [2024-06-27 22:39:23,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:23,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:39:23,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:23,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:39:23,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:39:23,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:39:23,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:23,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:23,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:39:23,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:23,986 INFO L124 PetriNetUnfolderBase]: 580/1080 cut-off events. [2024-06-27 22:39:23,986 INFO L125 PetriNetUnfolderBase]: For 1206/1206 co-relation queries the response was YES. [2024-06-27 22:39:23,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2934 conditions, 1080 events. 580/1080 cut-off events. For 1206/1206 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5343 event pairs, 188 based on Foata normal form. 2/1043 useless extension candidates. Maximal degree in co-relation 2912. Up to 899 conditions per place. [2024-06-27 22:39:23,990 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 67 selfloop transitions, 19 changer transitions 4/95 dead transitions. [2024-06-27 22:39:23,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 95 transitions, 527 flow [2024-06-27 22:39:23,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:39:23,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:39:23,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-27 22:39:23,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-27 22:39:23,992 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 226 flow. Second operand 9 states and 138 transitions. [2024-06-27 22:39:23,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 95 transitions, 527 flow [2024-06-27 22:39:23,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 95 transitions, 515 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:39:23,995 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 356 flow [2024-06-27 22:39:23,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=356, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-06-27 22:39:23,997 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 28 predicate places. [2024-06-27 22:39:23,997 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 356 flow [2024-06-27 22:39:23,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:23,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:23,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:23,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:39:23,997 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:23,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:23,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1905435752, now seen corresponding path program 1 times [2024-06-27 22:39:23,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:23,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077053939] [2024-06-27 22:39:23,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:23,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:30,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:30,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:30,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077053939] [2024-06-27 22:39:30,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077053939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:30,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:30,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:39:30,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360564625] [2024-06-27 22:39:30,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:30,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:39:30,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:30,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:39:30,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:39:30,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:39:30,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 356 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:30,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:30,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:39:30,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:30,731 INFO L124 PetriNetUnfolderBase]: 531/995 cut-off events. [2024-06-27 22:39:30,731 INFO L125 PetriNetUnfolderBase]: For 1476/1476 co-relation queries the response was YES. [2024-06-27 22:39:30,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3056 conditions, 995 events. 531/995 cut-off events. For 1476/1476 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4852 event pairs, 149 based on Foata normal form. 1/959 useless extension candidates. Maximal degree in co-relation 3026. Up to 796 conditions per place. [2024-06-27 22:39:30,736 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 78 selfloop transitions, 21 changer transitions 0/104 dead transitions. [2024-06-27 22:39:30,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 104 transitions, 704 flow [2024-06-27 22:39:30,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:39:30,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:39:30,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-27 22:39:30,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801587301587302 [2024-06-27 22:39:30,737 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 356 flow. Second operand 7 states and 121 transitions. [2024-06-27 22:39:30,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 104 transitions, 704 flow [2024-06-27 22:39:30,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 104 transitions, 700 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 22:39:30,741 INFO L231 Difference]: Finished difference. Result has 76 places, 74 transitions, 494 flow [2024-06-27 22:39:30,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=494, PETRI_PLACES=76, PETRI_TRANSITIONS=74} [2024-06-27 22:39:30,742 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 36 predicate places. [2024-06-27 22:39:30,742 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 74 transitions, 494 flow [2024-06-27 22:39:30,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:30,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:30,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:30,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:39:30,743 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:30,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:30,743 INFO L85 PathProgramCache]: Analyzing trace with hash -847905908, now seen corresponding path program 2 times [2024-06-27 22:39:30,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:30,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660403618] [2024-06-27 22:39:30,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:30,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:35,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:35,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:35,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660403618] [2024-06-27 22:39:35,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660403618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:35,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:35,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:39:35,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687640266] [2024-06-27 22:39:35,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:35,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:39:35,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:35,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:39:35,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:39:35,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:39:35,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 74 transitions, 494 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:35,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:35,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:39:35,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:36,126 INFO L124 PetriNetUnfolderBase]: 657/1207 cut-off events. [2024-06-27 22:39:36,126 INFO L125 PetriNetUnfolderBase]: For 2821/2821 co-relation queries the response was YES. [2024-06-27 22:39:36,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4231 conditions, 1207 events. 657/1207 cut-off events. For 2821/2821 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6063 event pairs, 153 based on Foata normal form. 1/1167 useless extension candidates. Maximal degree in co-relation 4195. Up to 829 conditions per place. [2024-06-27 22:39:36,133 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 88 selfloop transitions, 47 changer transitions 0/140 dead transitions. [2024-06-27 22:39:36,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 140 transitions, 1075 flow [2024-06-27 22:39:36,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:39:36,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:39:36,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 22:39:36,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-06-27 22:39:36,135 INFO L175 Difference]: Start difference. First operand has 76 places, 74 transitions, 494 flow. Second operand 9 states and 154 transitions. [2024-06-27 22:39:36,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 140 transitions, 1075 flow [2024-06-27 22:39:36,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 140 transitions, 1041 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-27 22:39:36,142 INFO L231 Difference]: Finished difference. Result has 86 places, 96 transitions, 794 flow [2024-06-27 22:39:36,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=794, PETRI_PLACES=86, PETRI_TRANSITIONS=96} [2024-06-27 22:39:36,142 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 46 predicate places. [2024-06-27 22:39:36,142 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 96 transitions, 794 flow [2024-06-27 22:39:36,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:36,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:36,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:36,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:39:36,149 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:36,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:36,150 INFO L85 PathProgramCache]: Analyzing trace with hash -847905722, now seen corresponding path program 1 times [2024-06-27 22:39:36,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:36,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701024240] [2024-06-27 22:39:36,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:36,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:41,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:41,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701024240] [2024-06-27 22:39:41,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701024240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:41,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:41,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:39:41,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412555960] [2024-06-27 22:39:41,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:41,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:39:41,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:41,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:39:41,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:39:41,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:39:41,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 96 transitions, 794 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:41,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:41,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:39:41,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:42,332 INFO L124 PetriNetUnfolderBase]: 709/1308 cut-off events. [2024-06-27 22:39:42,332 INFO L125 PetriNetUnfolderBase]: For 4574/4574 co-relation queries the response was YES. [2024-06-27 22:39:42,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5169 conditions, 1308 events. 709/1308 cut-off events. For 4574/4574 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6694 event pairs, 160 based on Foata normal form. 2/1262 useless extension candidates. Maximal degree in co-relation 5128. Up to 1009 conditions per place. [2024-06-27 22:39:42,340 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 109 selfloop transitions, 37 changer transitions 0/151 dead transitions. [2024-06-27 22:39:42,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 151 transitions, 1309 flow [2024-06-27 22:39:42,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:39:42,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:39:42,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 22:39:42,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-27 22:39:42,342 INFO L175 Difference]: Start difference. First operand has 86 places, 96 transitions, 794 flow. Second operand 10 states and 164 transitions. [2024-06-27 22:39:42,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 151 transitions, 1309 flow [2024-06-27 22:39:42,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 151 transitions, 1277 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-27 22:39:42,358 INFO L231 Difference]: Finished difference. Result has 96 places, 104 transitions, 939 flow [2024-06-27 22:39:42,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=939, PETRI_PLACES=96, PETRI_TRANSITIONS=104} [2024-06-27 22:39:42,359 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 56 predicate places. [2024-06-27 22:39:42,359 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 104 transitions, 939 flow [2024-06-27 22:39:42,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:42,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:42,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:42,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:39:42,360 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:42,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:42,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1406888174, now seen corresponding path program 3 times [2024-06-27 22:39:42,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:42,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547054882] [2024-06-27 22:39:42,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:42,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:46,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:46,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:46,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547054882] [2024-06-27 22:39:46,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547054882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:46,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:46,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:39:46,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871713154] [2024-06-27 22:39:46,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:46,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:39:46,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:46,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:39:46,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:39:46,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:39:46,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 104 transitions, 939 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:46,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:46,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:39:46,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:47,493 INFO L124 PetriNetUnfolderBase]: 719/1318 cut-off events. [2024-06-27 22:39:47,493 INFO L125 PetriNetUnfolderBase]: For 6203/6211 co-relation queries the response was YES. [2024-06-27 22:39:47,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5735 conditions, 1318 events. 719/1318 cut-off events. For 6203/6211 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6682 event pairs, 181 based on Foata normal form. 9/1281 useless extension candidates. Maximal degree in co-relation 5690. Up to 1101 conditions per place. [2024-06-27 22:39:47,501 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 96 selfloop transitions, 26 changer transitions 0/127 dead transitions. [2024-06-27 22:39:47,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 127 transitions, 1262 flow [2024-06-27 22:39:47,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:39:47,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:39:47,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-27 22:39:47,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-27 22:39:47,503 INFO L175 Difference]: Start difference. First operand has 96 places, 104 transitions, 939 flow. Second operand 8 states and 118 transitions. [2024-06-27 22:39:47,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 127 transitions, 1262 flow [2024-06-27 22:39:47,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 127 transitions, 1186 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 22:39:47,515 INFO L231 Difference]: Finished difference. Result has 99 places, 108 transitions, 966 flow [2024-06-27 22:39:47,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=966, PETRI_PLACES=99, PETRI_TRANSITIONS=108} [2024-06-27 22:39:47,516 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 59 predicate places. [2024-06-27 22:39:47,516 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 108 transitions, 966 flow [2024-06-27 22:39:47,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:47,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:47,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:47,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:39:47,517 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:47,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:47,517 INFO L85 PathProgramCache]: Analyzing trace with hash -640985372, now seen corresponding path program 2 times [2024-06-27 22:39:47,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:47,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972614356] [2024-06-27 22:39:47,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:47,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:53,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:53,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972614356] [2024-06-27 22:39:53,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972614356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:53,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:53,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:39:53,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699722659] [2024-06-27 22:39:53,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:53,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:39:53,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:53,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:39:53,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:39:53,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:39:53,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 108 transitions, 966 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:53,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:53,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:39:53,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:39:54,132 INFO L124 PetriNetUnfolderBase]: 749/1373 cut-off events. [2024-06-27 22:39:54,133 INFO L125 PetriNetUnfolderBase]: For 6609/6617 co-relation queries the response was YES. [2024-06-27 22:39:54,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6011 conditions, 1373 events. 749/1373 cut-off events. For 6609/6617 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7016 event pairs, 159 based on Foata normal form. 10/1334 useless extension candidates. Maximal degree in co-relation 5964. Up to 959 conditions per place. [2024-06-27 22:39:54,142 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 99 selfloop transitions, 40 changer transitions 0/144 dead transitions. [2024-06-27 22:39:54,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 144 transitions, 1420 flow [2024-06-27 22:39:54,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:39:54,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:39:54,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-27 22:39:54,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-27 22:39:54,143 INFO L175 Difference]: Start difference. First operand has 99 places, 108 transitions, 966 flow. Second operand 7 states and 123 transitions. [2024-06-27 22:39:54,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 144 transitions, 1420 flow [2024-06-27 22:39:54,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 144 transitions, 1375 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 22:39:54,155 INFO L231 Difference]: Finished difference. Result has 102 places, 112 transitions, 1051 flow [2024-06-27 22:39:54,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1051, PETRI_PLACES=102, PETRI_TRANSITIONS=112} [2024-06-27 22:39:54,156 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 62 predicate places. [2024-06-27 22:39:54,156 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 112 transitions, 1051 flow [2024-06-27 22:39:54,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:54,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:39:54,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:39:54,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:39:54,157 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:39:54,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:39:54,157 INFO L85 PathProgramCache]: Analyzing trace with hash 478558734, now seen corresponding path program 3 times [2024-06-27 22:39:54,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:39:54,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161798321] [2024-06-27 22:39:54,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:39:54,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:39:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:39:59,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:39:59,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:39:59,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161798321] [2024-06-27 22:39:59,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161798321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:39:59,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:39:59,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:39:59,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249997330] [2024-06-27 22:39:59,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:39:59,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:39:59,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:39:59,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:39:59,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:39:59,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:39:59,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 112 transitions, 1051 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:39:59,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:39:59,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:39:59,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:00,672 INFO L124 PetriNetUnfolderBase]: 767/1410 cut-off events. [2024-06-27 22:40:00,672 INFO L125 PetriNetUnfolderBase]: For 7829/7837 co-relation queries the response was YES. [2024-06-27 22:40:00,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6402 conditions, 1410 events. 767/1410 cut-off events. For 7829/7837 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7299 event pairs, 172 based on Foata normal form. 10/1368 useless extension candidates. Maximal degree in co-relation 6353. Up to 1113 conditions per place. [2024-06-27 22:40:00,687 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 104 selfloop transitions, 34 changer transitions 0/143 dead transitions. [2024-06-27 22:40:00,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 143 transitions, 1434 flow [2024-06-27 22:40:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:40:00,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:40:00,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-27 22:40:00,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2024-06-27 22:40:00,693 INFO L175 Difference]: Start difference. First operand has 102 places, 112 transitions, 1051 flow. Second operand 8 states and 127 transitions. [2024-06-27 22:40:00,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 143 transitions, 1434 flow [2024-06-27 22:40:00,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 143 transitions, 1382 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 22:40:00,711 INFO L231 Difference]: Finished difference. Result has 107 places, 114 transitions, 1101 flow [2024-06-27 22:40:00,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1101, PETRI_PLACES=107, PETRI_TRANSITIONS=114} [2024-06-27 22:40:00,712 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 67 predicate places. [2024-06-27 22:40:00,712 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 114 transitions, 1101 flow [2024-06-27 22:40:00,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:00,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:00,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:00,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:40:00,713 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:00,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:00,713 INFO L85 PathProgramCache]: Analyzing trace with hash -817763626, now seen corresponding path program 4 times [2024-06-27 22:40:00,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:00,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187747221] [2024-06-27 22:40:00,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:00,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:05,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:05,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187747221] [2024-06-27 22:40:05,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187747221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:05,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:05,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:40:05,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632258437] [2024-06-27 22:40:05,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:05,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:40:05,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:05,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:40:05,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:40:05,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:40:05,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 114 transitions, 1101 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:05,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:05,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:40:05,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:06,117 INFO L124 PetriNetUnfolderBase]: 763/1401 cut-off events. [2024-06-27 22:40:06,117 INFO L125 PetriNetUnfolderBase]: For 8049/8057 co-relation queries the response was YES. [2024-06-27 22:40:06,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6463 conditions, 1401 events. 763/1401 cut-off events. For 8049/8057 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7222 event pairs, 158 based on Foata normal form. 10/1360 useless extension candidates. Maximal degree in co-relation 6411. Up to 1012 conditions per place. [2024-06-27 22:40:06,125 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 92 selfloop transitions, 40 changer transitions 0/137 dead transitions. [2024-06-27 22:40:06,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 137 transitions, 1437 flow [2024-06-27 22:40:06,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:40:06,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:40:06,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-27 22:40:06,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 22:40:06,127 INFO L175 Difference]: Start difference. First operand has 107 places, 114 transitions, 1101 flow. Second operand 7 states and 112 transitions. [2024-06-27 22:40:06,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 137 transitions, 1437 flow [2024-06-27 22:40:06,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 137 transitions, 1366 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 22:40:06,140 INFO L231 Difference]: Finished difference. Result has 109 places, 114 transitions, 1131 flow [2024-06-27 22:40:06,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1131, PETRI_PLACES=109, PETRI_TRANSITIONS=114} [2024-06-27 22:40:06,141 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 69 predicate places. [2024-06-27 22:40:06,141 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 114 transitions, 1131 flow [2024-06-27 22:40:06,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:06,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:06,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:06,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:40:06,142 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:06,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:06,142 INFO L85 PathProgramCache]: Analyzing trace with hash -854406742, now seen corresponding path program 4 times [2024-06-27 22:40:06,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:06,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570596048] [2024-06-27 22:40:06,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:06,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:10,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:10,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:10,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570596048] [2024-06-27 22:40:10,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570596048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:10,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:10,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:40:10,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868453949] [2024-06-27 22:40:10,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:10,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:40:10,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:10,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:40:10,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:40:10,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:40:10,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 114 transitions, 1131 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:10,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:10,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:40:10,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:10,925 INFO L124 PetriNetUnfolderBase]: 761/1398 cut-off events. [2024-06-27 22:40:10,926 INFO L125 PetriNetUnfolderBase]: For 8298/8306 co-relation queries the response was YES. [2024-06-27 22:40:10,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6573 conditions, 1398 events. 761/1398 cut-off events. For 8298/8306 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7217 event pairs, 173 based on Foata normal form. 9/1356 useless extension candidates. Maximal degree in co-relation 6520. Up to 1099 conditions per place. [2024-06-27 22:40:10,937 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 90 selfloop transitions, 42 changer transitions 0/137 dead transitions. [2024-06-27 22:40:10,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 137 transitions, 1462 flow [2024-06-27 22:40:10,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:40:10,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:40:10,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-27 22:40:10,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-27 22:40:10,939 INFO L175 Difference]: Start difference. First operand has 109 places, 114 transitions, 1131 flow. Second operand 7 states and 110 transitions. [2024-06-27 22:40:10,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 137 transitions, 1462 flow [2024-06-27 22:40:10,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 137 transitions, 1374 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 22:40:10,957 INFO L231 Difference]: Finished difference. Result has 110 places, 116 transitions, 1175 flow [2024-06-27 22:40:10,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1175, PETRI_PLACES=110, PETRI_TRANSITIONS=116} [2024-06-27 22:40:10,958 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 70 predicate places. [2024-06-27 22:40:10,959 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 116 transitions, 1175 flow [2024-06-27 22:40:10,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:10,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:10,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:10,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:40:10,959 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:10,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:10,961 INFO L85 PathProgramCache]: Analyzing trace with hash 213141910, now seen corresponding path program 1 times [2024-06-27 22:40:10,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:10,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710843221] [2024-06-27 22:40:10,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:10,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:17,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:17,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710843221] [2024-06-27 22:40:17,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710843221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:17,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:17,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:40:17,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261069384] [2024-06-27 22:40:17,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:17,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:40:17,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:17,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:40:17,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:40:17,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:40:17,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 116 transitions, 1175 flow. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:17,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:17,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:40:17,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:18,096 INFO L124 PetriNetUnfolderBase]: 758/1392 cut-off events. [2024-06-27 22:40:18,096 INFO L125 PetriNetUnfolderBase]: For 8168/8168 co-relation queries the response was YES. [2024-06-27 22:40:18,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6549 conditions, 1392 events. 758/1392 cut-off events. For 8168/8168 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7165 event pairs, 182 based on Foata normal form. 2/1343 useless extension candidates. Maximal degree in co-relation 6495. Up to 1151 conditions per place. [2024-06-27 22:40:18,104 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 126 selfloop transitions, 16 changer transitions 0/147 dead transitions. [2024-06-27 22:40:18,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 147 transitions, 1563 flow [2024-06-27 22:40:18,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:40:18,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:40:18,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-27 22:40:18,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-27 22:40:18,105 INFO L175 Difference]: Start difference. First operand has 110 places, 116 transitions, 1175 flow. Second operand 8 states and 123 transitions. [2024-06-27 22:40:18,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 147 transitions, 1563 flow [2024-06-27 22:40:18,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 147 transitions, 1475 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 22:40:18,123 INFO L231 Difference]: Finished difference. Result has 112 places, 116 transitions, 1123 flow [2024-06-27 22:40:18,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1123, PETRI_PLACES=112, PETRI_TRANSITIONS=116} [2024-06-27 22:40:18,123 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 72 predicate places. [2024-06-27 22:40:18,124 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 116 transitions, 1123 flow [2024-06-27 22:40:18,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:18,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:18,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:18,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:40:18,124 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:18,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:18,125 INFO L85 PathProgramCache]: Analyzing trace with hash -519086426, now seen corresponding path program 1 times [2024-06-27 22:40:18,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:18,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607828619] [2024-06-27 22:40:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:18,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:23,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:23,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607828619] [2024-06-27 22:40:23,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607828619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:23,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:23,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:40:23,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081709576] [2024-06-27 22:40:23,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:23,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:40:23,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:23,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:40:23,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:40:23,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:40:23,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 116 transitions, 1123 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:23,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:23,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:40:23,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:24,219 INFO L124 PetriNetUnfolderBase]: 795/1425 cut-off events. [2024-06-27 22:40:24,220 INFO L125 PetriNetUnfolderBase]: For 7685/7685 co-relation queries the response was YES. [2024-06-27 22:40:24,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6675 conditions, 1425 events. 795/1425 cut-off events. For 7685/7685 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7331 event pairs, 166 based on Foata normal form. 1/1383 useless extension candidates. Maximal degree in co-relation 6621. Up to 1118 conditions per place. [2024-06-27 22:40:24,228 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 120 selfloop transitions, 38 changer transitions 0/163 dead transitions. [2024-06-27 22:40:24,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 163 transitions, 1635 flow [2024-06-27 22:40:24,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:40:24,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:40:24,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-27 22:40:24,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-27 22:40:24,230 INFO L175 Difference]: Start difference. First operand has 112 places, 116 transitions, 1123 flow. Second operand 7 states and 135 transitions. [2024-06-27 22:40:24,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 163 transitions, 1635 flow [2024-06-27 22:40:24,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 163 transitions, 1608 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 22:40:24,245 INFO L231 Difference]: Finished difference. Result has 115 places, 122 transitions, 1235 flow [2024-06-27 22:40:24,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1235, PETRI_PLACES=115, PETRI_TRANSITIONS=122} [2024-06-27 22:40:24,260 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 75 predicate places. [2024-06-27 22:40:24,260 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 122 transitions, 1235 flow [2024-06-27 22:40:24,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:24,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:24,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:24,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:40:24,261 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:24,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:24,261 INFO L85 PathProgramCache]: Analyzing trace with hash 920089159, now seen corresponding path program 1 times [2024-06-27 22:40:24,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:24,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081214962] [2024-06-27 22:40:24,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:24,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:31,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:31,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:31,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081214962] [2024-06-27 22:40:31,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081214962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:31,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:31,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:40:31,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170519015] [2024-06-27 22:40:31,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:31,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:40:31,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:31,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:40:31,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:40:31,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:40:31,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 122 transitions, 1235 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:31,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:31,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:40:31,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:32,103 INFO L124 PetriNetUnfolderBase]: 837/1504 cut-off events. [2024-06-27 22:40:32,103 INFO L125 PetriNetUnfolderBase]: For 8903/8903 co-relation queries the response was YES. [2024-06-27 22:40:32,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7288 conditions, 1504 events. 837/1504 cut-off events. For 8903/8903 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7760 event pairs, 176 based on Foata normal form. 2/1458 useless extension candidates. Maximal degree in co-relation 7232. Up to 1131 conditions per place. [2024-06-27 22:40:32,113 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 126 selfloop transitions, 48 changer transitions 0/179 dead transitions. [2024-06-27 22:40:32,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 179 transitions, 1907 flow [2024-06-27 22:40:32,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:40:32,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:40:32,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 22:40:32,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 22:40:32,127 INFO L175 Difference]: Start difference. First operand has 115 places, 122 transitions, 1235 flow. Second operand 9 states and 153 transitions. [2024-06-27 22:40:32,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 179 transitions, 1907 flow [2024-06-27 22:40:32,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 179 transitions, 1851 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 22:40:32,146 INFO L231 Difference]: Finished difference. Result has 123 places, 137 transitions, 1506 flow [2024-06-27 22:40:32,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1179, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1506, PETRI_PLACES=123, PETRI_TRANSITIONS=137} [2024-06-27 22:40:32,146 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 83 predicate places. [2024-06-27 22:40:32,146 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 137 transitions, 1506 flow [2024-06-27 22:40:32,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:32,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:32,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:32,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:40:32,148 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:32,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:32,148 INFO L85 PathProgramCache]: Analyzing trace with hash -518996216, now seen corresponding path program 2 times [2024-06-27 22:40:32,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:32,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391842136] [2024-06-27 22:40:32,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:32,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:39,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:39,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391842136] [2024-06-27 22:40:39,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391842136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:39,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:39,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:40:39,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921771349] [2024-06-27 22:40:39,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:39,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:40:39,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:39,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:40:39,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:40:39,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:40:39,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 137 transitions, 1506 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:39,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:39,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:40:39,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:40,770 INFO L124 PetriNetUnfolderBase]: 840/1512 cut-off events. [2024-06-27 22:40:40,771 INFO L125 PetriNetUnfolderBase]: For 10898/10898 co-relation queries the response was YES. [2024-06-27 22:40:40,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7876 conditions, 1512 events. 840/1512 cut-off events. For 10898/10898 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7839 event pairs, 185 based on Foata normal form. 1/1464 useless extension candidates. Maximal degree in co-relation 7816. Up to 1218 conditions per place. [2024-06-27 22:40:40,781 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 134 selfloop transitions, 36 changer transitions 0/175 dead transitions. [2024-06-27 22:40:40,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 175 transitions, 1984 flow [2024-06-27 22:40:40,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:40:40,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:40:40,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 22:40:40,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 22:40:40,793 INFO L175 Difference]: Start difference. First operand has 123 places, 137 transitions, 1506 flow. Second operand 8 states and 136 transitions. [2024-06-27 22:40:40,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 175 transitions, 1984 flow [2024-06-27 22:40:40,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 175 transitions, 1917 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 22:40:40,818 INFO L231 Difference]: Finished difference. Result has 127 places, 139 transitions, 1538 flow [2024-06-27 22:40:40,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1538, PETRI_PLACES=127, PETRI_TRANSITIONS=139} [2024-06-27 22:40:40,818 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 87 predicate places. [2024-06-27 22:40:40,818 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 139 transitions, 1538 flow [2024-06-27 22:40:40,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:40,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:40,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:40,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:40:40,819 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:40,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:40,819 INFO L85 PathProgramCache]: Analyzing trace with hash -515276991, now seen corresponding path program 2 times [2024-06-27 22:40:40,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:40,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356655601] [2024-06-27 22:40:40,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:40,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:45,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:45,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:45,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356655601] [2024-06-27 22:40:45,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356655601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:45,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:45,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:40:45,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638083827] [2024-06-27 22:40:45,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:45,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:40:45,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:45,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:40:45,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:40:45,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:40:45,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 139 transitions, 1538 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:45,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:45,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:40:45,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:46,004 INFO L124 PetriNetUnfolderBase]: 862/1548 cut-off events. [2024-06-27 22:40:46,004 INFO L125 PetriNetUnfolderBase]: For 11241/11241 co-relation queries the response was YES. [2024-06-27 22:40:46,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8243 conditions, 1548 events. 862/1548 cut-off events. For 11241/11241 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8011 event pairs, 183 based on Foata normal form. 1/1499 useless extension candidates. Maximal degree in co-relation 8181. Up to 1319 conditions per place. [2024-06-27 22:40:46,013 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 140 selfloop transitions, 28 changer transitions 0/173 dead transitions. [2024-06-27 22:40:46,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 173 transitions, 2064 flow [2024-06-27 22:40:46,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:40:46,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:40:46,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-27 22:40:46,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-27 22:40:46,015 INFO L175 Difference]: Start difference. First operand has 127 places, 139 transitions, 1538 flow. Second operand 8 states and 129 transitions. [2024-06-27 22:40:46,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 173 transitions, 2064 flow [2024-06-27 22:40:46,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 173 transitions, 1977 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 22:40:46,042 INFO L231 Difference]: Finished difference. Result has 130 places, 147 transitions, 1627 flow [2024-06-27 22:40:46,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1627, PETRI_PLACES=130, PETRI_TRANSITIONS=147} [2024-06-27 22:40:46,042 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 90 predicate places. [2024-06-27 22:40:46,043 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 147 transitions, 1627 flow [2024-06-27 22:40:46,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:46,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:46,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:46,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:40:46,043 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:46,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:46,044 INFO L85 PathProgramCache]: Analyzing trace with hash 923808074, now seen corresponding path program 3 times [2024-06-27 22:40:46,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:46,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851211586] [2024-06-27 22:40:46,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:46,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:51,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:51,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:51,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851211586] [2024-06-27 22:40:51,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851211586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:51,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:51,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:40:51,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407481143] [2024-06-27 22:40:51,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:51,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:40:51,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:51,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:40:51,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:40:51,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:40:51,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 147 transitions, 1627 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:51,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:51,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:40:51,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:52,745 INFO L124 PetriNetUnfolderBase]: 887/1593 cut-off events. [2024-06-27 22:40:52,746 INFO L125 PetriNetUnfolderBase]: For 12016/12016 co-relation queries the response was YES. [2024-06-27 22:40:52,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8416 conditions, 1593 events. 887/1593 cut-off events. For 12016/12016 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8350 event pairs, 192 based on Foata normal form. 1/1542 useless extension candidates. Maximal degree in co-relation 8352. Up to 1339 conditions per place. [2024-06-27 22:40:52,755 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 146 selfloop transitions, 32 changer transitions 0/183 dead transitions. [2024-06-27 22:40:52,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 183 transitions, 2129 flow [2024-06-27 22:40:52,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:40:52,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:40:52,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-27 22:40:52,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42901234567901236 [2024-06-27 22:40:52,757 INFO L175 Difference]: Start difference. First operand has 130 places, 147 transitions, 1627 flow. Second operand 9 states and 139 transitions. [2024-06-27 22:40:52,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 183 transitions, 2129 flow [2024-06-27 22:40:52,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 183 transitions, 2107 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 22:40:52,785 INFO L231 Difference]: Finished difference. Result has 139 places, 153 transitions, 1754 flow [2024-06-27 22:40:52,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1754, PETRI_PLACES=139, PETRI_TRANSITIONS=153} [2024-06-27 22:40:52,786 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 99 predicate places. [2024-06-27 22:40:52,786 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 153 transitions, 1754 flow [2024-06-27 22:40:52,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:52,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:52,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:52,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:40:52,786 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:52,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:52,787 INFO L85 PathProgramCache]: Analyzing trace with hash 923813809, now seen corresponding path program 3 times [2024-06-27 22:40:52,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:52,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489511234] [2024-06-27 22:40:52,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:52,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:40:57,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:40:57,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:40:57,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489511234] [2024-06-27 22:40:57,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489511234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:40:57,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:40:57,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:40:57,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700310976] [2024-06-27 22:40:57,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:40:57,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:40:57,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:40:57,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:40:57,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:40:57,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:40:57,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 153 transitions, 1754 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:57,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:40:57,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:40:57,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:40:58,464 INFO L124 PetriNetUnfolderBase]: 925/1670 cut-off events. [2024-06-27 22:40:58,465 INFO L125 PetriNetUnfolderBase]: For 13943/13943 co-relation queries the response was YES. [2024-06-27 22:40:58,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9025 conditions, 1670 events. 925/1670 cut-off events. For 13943/13943 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8901 event pairs, 178 based on Foata normal form. 3/1615 useless extension candidates. Maximal degree in co-relation 8957. Up to 1301 conditions per place. [2024-06-27 22:40:58,475 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 155 selfloop transitions, 51 changer transitions 0/211 dead transitions. [2024-06-27 22:40:58,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 211 transitions, 2411 flow [2024-06-27 22:40:58,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:40:58,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:40:58,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 22:40:58,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45202020202020204 [2024-06-27 22:40:58,484 INFO L175 Difference]: Start difference. First operand has 139 places, 153 transitions, 1754 flow. Second operand 11 states and 179 transitions. [2024-06-27 22:40:58,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 211 transitions, 2411 flow [2024-06-27 22:40:58,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 211 transitions, 2359 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-27 22:40:58,513 INFO L231 Difference]: Finished difference. Result has 148 places, 163 transitions, 1980 flow [2024-06-27 22:40:58,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1980, PETRI_PLACES=148, PETRI_TRANSITIONS=163} [2024-06-27 22:40:58,513 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 108 predicate places. [2024-06-27 22:40:58,513 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 163 transitions, 1980 flow [2024-06-27 22:40:58,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:40:58,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:40:58,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:40:58,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:40:58,514 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:40:58,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:40:58,514 INFO L85 PathProgramCache]: Analyzing trace with hash 663868395, now seen corresponding path program 4 times [2024-06-27 22:40:58,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:40:58,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969721846] [2024-06-27 22:40:58,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:40:58,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:40:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:03,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:03,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:03,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969721846] [2024-06-27 22:41:03,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969721846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:03,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:03,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:41:03,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305668805] [2024-06-27 22:41:03,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:03,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:41:03,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:03,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:41:03,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:41:03,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:41:03,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 163 transitions, 1980 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:03,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:03,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:41:03,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:04,426 INFO L124 PetriNetUnfolderBase]: 945/1683 cut-off events. [2024-06-27 22:41:04,426 INFO L125 PetriNetUnfolderBase]: For 16025/16031 co-relation queries the response was YES. [2024-06-27 22:41:04,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9649 conditions, 1683 events. 945/1683 cut-off events. For 16025/16031 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8823 event pairs, 196 based on Foata normal form. 8/1639 useless extension candidates. Maximal degree in co-relation 9579. Up to 1430 conditions per place. [2024-06-27 22:41:04,437 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 154 selfloop transitions, 33 changer transitions 0/192 dead transitions. [2024-06-27 22:41:04,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 192 transitions, 2500 flow [2024-06-27 22:41:04,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:41:04,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:41:04,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-27 22:41:04,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4104938271604938 [2024-06-27 22:41:04,439 INFO L175 Difference]: Start difference. First operand has 148 places, 163 transitions, 1980 flow. Second operand 9 states and 133 transitions. [2024-06-27 22:41:04,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 192 transitions, 2500 flow [2024-06-27 22:41:04,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 192 transitions, 2340 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-27 22:41:04,478 INFO L231 Difference]: Finished difference. Result has 148 places, 168 transitions, 1990 flow [2024-06-27 22:41:04,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1990, PETRI_PLACES=148, PETRI_TRANSITIONS=168} [2024-06-27 22:41:04,478 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 108 predicate places. [2024-06-27 22:41:04,478 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 168 transitions, 1990 flow [2024-06-27 22:41:04,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:04,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:04,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:04,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:41:04,479 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:04,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:04,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1991120497, now seen corresponding path program 5 times [2024-06-27 22:41:04,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:04,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682537569] [2024-06-27 22:41:04,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:04,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:09,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:09,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:09,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682537569] [2024-06-27 22:41:09,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682537569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:09,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:09,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:41:09,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340864406] [2024-06-27 22:41:09,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:09,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:41:09,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:09,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:41:09,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:41:09,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:41:09,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 168 transitions, 1990 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:09,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:09,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:41:09,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:10,157 INFO L124 PetriNetUnfolderBase]: 990/1774 cut-off events. [2024-06-27 22:41:10,158 INFO L125 PetriNetUnfolderBase]: For 16428/16434 co-relation queries the response was YES. [2024-06-27 22:41:10,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10042 conditions, 1774 events. 990/1774 cut-off events. For 16428/16434 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9493 event pairs, 180 based on Foata normal form. 8/1723 useless extension candidates. Maximal degree in co-relation 9972. Up to 1407 conditions per place. [2024-06-27 22:41:10,168 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 162 selfloop transitions, 54 changer transitions 0/221 dead transitions. [2024-06-27 22:41:10,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 221 transitions, 2699 flow [2024-06-27 22:41:10,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:10,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:10,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 22:41:10,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-27 22:41:10,170 INFO L175 Difference]: Start difference. First operand has 148 places, 168 transitions, 1990 flow. Second operand 10 states and 161 transitions. [2024-06-27 22:41:10,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 221 transitions, 2699 flow [2024-06-27 22:41:10,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 221 transitions, 2601 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 22:41:10,206 INFO L231 Difference]: Finished difference. Result has 153 places, 178 transitions, 2191 flow [2024-06-27 22:41:10,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1892, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2191, PETRI_PLACES=153, PETRI_TRANSITIONS=178} [2024-06-27 22:41:10,207 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 113 predicate places. [2024-06-27 22:41:10,207 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 178 transitions, 2191 flow [2024-06-27 22:41:10,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:10,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:10,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:10,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:41:10,208 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:10,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:10,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1982840707, now seen corresponding path program 6 times [2024-06-27 22:41:10,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:10,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472806577] [2024-06-27 22:41:10,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:10,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:14,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:14,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:14,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472806577] [2024-06-27 22:41:14,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472806577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:14,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:14,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:41:14,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940225407] [2024-06-27 22:41:14,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:14,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:41:14,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:14,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:41:14,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:41:14,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:41:14,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 178 transitions, 2191 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:14,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:14,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:41:14,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:15,722 INFO L124 PetriNetUnfolderBase]: 998/1762 cut-off events. [2024-06-27 22:41:15,723 INFO L125 PetriNetUnfolderBase]: For 18079/18085 co-relation queries the response was YES. [2024-06-27 22:41:15,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10374 conditions, 1762 events. 998/1762 cut-off events. For 18079/18085 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9250 event pairs, 204 based on Foata normal form. 8/1719 useless extension candidates. Maximal degree in co-relation 10302. Up to 1476 conditions per place. [2024-06-27 22:41:15,736 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 161 selfloop transitions, 44 changer transitions 0/210 dead transitions. [2024-06-27 22:41:15,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 210 transitions, 2800 flow [2024-06-27 22:41:15,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:41:15,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:41:15,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-27 22:41:15,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2024-06-27 22:41:15,737 INFO L175 Difference]: Start difference. First operand has 153 places, 178 transitions, 2191 flow. Second operand 8 states and 127 transitions. [2024-06-27 22:41:15,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 210 transitions, 2800 flow [2024-06-27 22:41:15,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 210 transitions, 2685 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 22:41:15,784 INFO L231 Difference]: Finished difference. Result has 156 places, 186 transitions, 2332 flow [2024-06-27 22:41:15,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2076, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2332, PETRI_PLACES=156, PETRI_TRANSITIONS=186} [2024-06-27 22:41:15,784 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 116 predicate places. [2024-06-27 22:41:15,784 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 186 transitions, 2332 flow [2024-06-27 22:41:15,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:15,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:15,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:15,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:41:15,785 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:15,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:15,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1991120652, now seen corresponding path program 4 times [2024-06-27 22:41:15,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:15,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811011987] [2024-06-27 22:41:15,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:15,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:21,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:21,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811011987] [2024-06-27 22:41:21,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811011987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:21,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:21,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:41:21,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696801199] [2024-06-27 22:41:21,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:21,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:41:21,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:21,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:41:21,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:41:21,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:41:21,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 186 transitions, 2332 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:21,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:21,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:41:21,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:22,106 INFO L124 PetriNetUnfolderBase]: 1043/1860 cut-off events. [2024-06-27 22:41:22,106 INFO L125 PetriNetUnfolderBase]: For 19518/19524 co-relation queries the response was YES. [2024-06-27 22:41:22,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11040 conditions, 1860 events. 1043/1860 cut-off events. For 19518/19524 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10080 event pairs, 199 based on Foata normal form. 7/1807 useless extension candidates. Maximal degree in co-relation 10965. Up to 1564 conditions per place. [2024-06-27 22:41:22,121 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 185 selfloop transitions, 42 changer transitions 0/232 dead transitions. [2024-06-27 22:41:22,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 232 transitions, 3057 flow [2024-06-27 22:41:22,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:41:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:41:22,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-27 22:41:22,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-27 22:41:22,123 INFO L175 Difference]: Start difference. First operand has 156 places, 186 transitions, 2332 flow. Second operand 11 states and 159 transitions. [2024-06-27 22:41:22,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 232 transitions, 3057 flow [2024-06-27 22:41:22,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 232 transitions, 2913 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-27 22:41:22,189 INFO L231 Difference]: Finished difference. Result has 166 places, 200 transitions, 2511 flow [2024-06-27 22:41:22,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2188, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2511, PETRI_PLACES=166, PETRI_TRANSITIONS=200} [2024-06-27 22:41:22,190 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 126 predicate places. [2024-06-27 22:41:22,202 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 200 transitions, 2511 flow [2024-06-27 22:41:22,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:22,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:22,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:22,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:41:22,202 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:22,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:22,203 INFO L85 PathProgramCache]: Analyzing trace with hash -716803000, now seen corresponding path program 5 times [2024-06-27 22:41:22,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:22,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752379720] [2024-06-27 22:41:22,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:22,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:27,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:27,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:27,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752379720] [2024-06-27 22:41:27,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752379720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:27,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:27,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:41:27,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590443330] [2024-06-27 22:41:27,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:27,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:41:27,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:27,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:41:27,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:41:27,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:41:27,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 200 transitions, 2511 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:27,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:27,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:41:27,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:29,075 INFO L124 PetriNetUnfolderBase]: 1070/1885 cut-off events. [2024-06-27 22:41:29,075 INFO L125 PetriNetUnfolderBase]: For 19685/19685 co-relation queries the response was YES. [2024-06-27 22:41:29,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11497 conditions, 1885 events. 1070/1885 cut-off events. For 19685/19685 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10039 event pairs, 209 based on Foata normal form. 1/1831 useless extension candidates. Maximal degree in co-relation 11417. Up to 1637 conditions per place. [2024-06-27 22:41:29,087 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 207 selfloop transitions, 34 changer transitions 0/246 dead transitions. [2024-06-27 22:41:29,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 246 transitions, 3285 flow [2024-06-27 22:41:29,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:41:29,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:41:29,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-27 22:41:29,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44135802469135804 [2024-06-27 22:41:29,089 INFO L175 Difference]: Start difference. First operand has 166 places, 200 transitions, 2511 flow. Second operand 9 states and 143 transitions. [2024-06-27 22:41:29,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 246 transitions, 3285 flow [2024-06-27 22:41:29,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 246 transitions, 3174 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 22:41:29,147 INFO L231 Difference]: Finished difference. Result has 172 places, 212 transitions, 2714 flow [2024-06-27 22:41:29,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2411, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2714, PETRI_PLACES=172, PETRI_TRANSITIONS=212} [2024-06-27 22:41:29,147 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 132 predicate places. [2024-06-27 22:41:29,147 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 212 transitions, 2714 flow [2024-06-27 22:41:29,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:29,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:29,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:29,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:41:29,148 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:29,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:29,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1561987045, now seen corresponding path program 7 times [2024-06-27 22:41:29,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:29,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967176609] [2024-06-27 22:41:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:29,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:33,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:33,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:33,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967176609] [2024-06-27 22:41:33,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967176609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:33,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:33,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:41:33,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954979868] [2024-06-27 22:41:33,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:33,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:41:33,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:33,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:41:33,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:41:33,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:41:33,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 212 transitions, 2714 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:33,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:33,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:41:33,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:34,403 INFO L124 PetriNetUnfolderBase]: 1078/1898 cut-off events. [2024-06-27 22:41:34,403 INFO L125 PetriNetUnfolderBase]: For 21086/21092 co-relation queries the response was YES. [2024-06-27 22:41:34,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11692 conditions, 1898 events. 1078/1898 cut-off events. For 21086/21092 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10125 event pairs, 215 based on Foata normal form. 8/1851 useless extension candidates. Maximal degree in co-relation 11608. Up to 1599 conditions per place. [2024-06-27 22:41:34,418 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 185 selfloop transitions, 47 changer transitions 0/237 dead transitions. [2024-06-27 22:41:34,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 237 transitions, 3320 flow [2024-06-27 22:41:34,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:41:34,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:41:34,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-27 22:41:34,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44841269841269843 [2024-06-27 22:41:34,420 INFO L175 Difference]: Start difference. First operand has 172 places, 212 transitions, 2714 flow. Second operand 7 states and 113 transitions. [2024-06-27 22:41:34,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 237 transitions, 3320 flow [2024-06-27 22:41:34,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 237 transitions, 3217 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 22:41:34,489 INFO L231 Difference]: Finished difference. Result has 171 places, 217 transitions, 2811 flow [2024-06-27 22:41:34,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2611, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2811, PETRI_PLACES=171, PETRI_TRANSITIONS=217} [2024-06-27 22:41:34,490 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 131 predicate places. [2024-06-27 22:41:34,490 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 217 transitions, 2811 flow [2024-06-27 22:41:34,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:34,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:34,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:34,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:41:34,490 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:34,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:34,491 INFO L85 PathProgramCache]: Analyzing trace with hash 419127985, now seen corresponding path program 8 times [2024-06-27 22:41:34,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:34,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408406109] [2024-06-27 22:41:34,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:34,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:38,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:38,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:38,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408406109] [2024-06-27 22:41:38,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408406109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:38,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:38,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:41:38,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060299665] [2024-06-27 22:41:38,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:38,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:41:38,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:38,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:41:38,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:41:38,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:41:38,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 217 transitions, 2811 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:38,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:38,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:41:38,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:39,752 INFO L124 PetriNetUnfolderBase]: 1099/1950 cut-off events. [2024-06-27 22:41:39,753 INFO L125 PetriNetUnfolderBase]: For 23091/23097 co-relation queries the response was YES. [2024-06-27 22:41:39,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12113 conditions, 1950 events. 1099/1950 cut-off events. For 23091/23097 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10608 event pairs, 213 based on Foata normal form. 8/1897 useless extension candidates. Maximal degree in co-relation 12032. Up to 1541 conditions per place. [2024-06-27 22:41:39,768 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 191 selfloop transitions, 54 changer transitions 0/250 dead transitions. [2024-06-27 22:41:39,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 250 transitions, 3550 flow [2024-06-27 22:41:39,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:41:39,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:41:39,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-27 22:41:39,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 22:41:39,792 INFO L175 Difference]: Start difference. First operand has 171 places, 217 transitions, 2811 flow. Second operand 8 states and 126 transitions. [2024-06-27 22:41:39,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 250 transitions, 3550 flow [2024-06-27 22:41:39,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 250 transitions, 3395 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-27 22:41:39,872 INFO L231 Difference]: Finished difference. Result has 176 places, 222 transitions, 2917 flow [2024-06-27 22:41:39,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2662, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2917, PETRI_PLACES=176, PETRI_TRANSITIONS=222} [2024-06-27 22:41:39,873 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 136 predicate places. [2024-06-27 22:41:39,873 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 222 transitions, 2917 flow [2024-06-27 22:41:39,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:39,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:39,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:39,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:41:39,874 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:39,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:39,874 INFO L85 PathProgramCache]: Analyzing trace with hash 40459585, now seen corresponding path program 1 times [2024-06-27 22:41:39,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:39,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834091493] [2024-06-27 22:41:39,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:39,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:45,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:45,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834091493] [2024-06-27 22:41:45,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834091493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:45,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:45,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:41:45,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260576043] [2024-06-27 22:41:45,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:45,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:41:45,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:45,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:41:45,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:41:45,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:41:45,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 222 transitions, 2917 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:45,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:45,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:41:45,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:46,318 INFO L124 PetriNetUnfolderBase]: 1139/2014 cut-off events. [2024-06-27 22:41:46,318 INFO L125 PetriNetUnfolderBase]: For 26608/26608 co-relation queries the response was YES. [2024-06-27 22:41:46,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12716 conditions, 2014 events. 1139/2014 cut-off events. For 26608/26608 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11014 event pairs, 155 based on Foata normal form. 2/1956 useless extension candidates. Maximal degree in co-relation 12633. Up to 1536 conditions per place. [2024-06-27 22:41:46,334 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 220 selfloop transitions, 60 changer transitions 0/285 dead transitions. [2024-06-27 22:41:46,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 285 transitions, 3882 flow [2024-06-27 22:41:46,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:41:46,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:41:46,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 22:41:46,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845679012345679 [2024-06-27 22:41:46,335 INFO L175 Difference]: Start difference. First operand has 176 places, 222 transitions, 2917 flow. Second operand 9 states and 157 transitions. [2024-06-27 22:41:46,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 285 transitions, 3882 flow [2024-06-27 22:41:46,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 285 transitions, 3761 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-27 22:41:46,412 INFO L231 Difference]: Finished difference. Result has 182 places, 240 transitions, 3206 flow [2024-06-27 22:41:46,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2798, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3206, PETRI_PLACES=182, PETRI_TRANSITIONS=240} [2024-06-27 22:41:46,413 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 142 predicate places. [2024-06-27 22:41:46,413 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 240 transitions, 3206 flow [2024-06-27 22:41:46,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:46,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:46,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:46,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:41:46,413 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:46,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:46,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1544806077, now seen corresponding path program 1 times [2024-06-27 22:41:46,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:46,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600230060] [2024-06-27 22:41:46,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:46,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:52,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:52,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:52,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600230060] [2024-06-27 22:41:52,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600230060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:52,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:52,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:41:52,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648665421] [2024-06-27 22:41:52,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:52,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:41:52,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:52,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:41:52,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:41:52,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:41:52,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 240 transitions, 3206 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:52,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:52,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:41:52,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:41:53,919 INFO L124 PetriNetUnfolderBase]: 1228/2173 cut-off events. [2024-06-27 22:41:53,919 INFO L125 PetriNetUnfolderBase]: For 29398/29398 co-relation queries the response was YES. [2024-06-27 22:41:53,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14076 conditions, 2173 events. 1228/2173 cut-off events. For 29398/29398 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12102 event pairs, 209 based on Foata normal form. 2/2108 useless extension candidates. Maximal degree in co-relation 13990. Up to 1377 conditions per place. [2024-06-27 22:41:53,935 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 216 selfloop transitions, 89 changer transitions 0/310 dead transitions. [2024-06-27 22:41:53,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 310 transitions, 4377 flow [2024-06-27 22:41:53,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:41:53,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:41:53,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 22:41:53,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49722222222222223 [2024-06-27 22:41:53,937 INFO L175 Difference]: Start difference. First operand has 182 places, 240 transitions, 3206 flow. Second operand 10 states and 179 transitions. [2024-06-27 22:41:53,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 310 transitions, 4377 flow [2024-06-27 22:41:54,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 310 transitions, 4195 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-27 22:41:54,018 INFO L231 Difference]: Finished difference. Result has 191 places, 250 transitions, 3465 flow [2024-06-27 22:41:54,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3048, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3465, PETRI_PLACES=191, PETRI_TRANSITIONS=250} [2024-06-27 22:41:54,018 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 151 predicate places. [2024-06-27 22:41:54,018 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 250 transitions, 3465 flow [2024-06-27 22:41:54,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:54,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:41:54,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:41:54,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:41:54,019 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:41:54,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:41:54,019 INFO L85 PathProgramCache]: Analyzing trace with hash -74780839, now seen corresponding path program 2 times [2024-06-27 22:41:54,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:41:54,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315045700] [2024-06-27 22:41:54,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:41:54,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:41:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:41:59,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:41:59,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:41:59,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315045700] [2024-06-27 22:41:59,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315045700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:41:59,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:41:59,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:41:59,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779011082] [2024-06-27 22:41:59,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:41:59,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:41:59,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:41:59,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:41:59,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:41:59,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:41:59,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 250 transitions, 3465 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:41:59,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:41:59,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:41:59,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:01,114 INFO L124 PetriNetUnfolderBase]: 1250/2217 cut-off events. [2024-06-27 22:42:01,114 INFO L125 PetriNetUnfolderBase]: For 31541/31541 co-relation queries the response was YES. [2024-06-27 22:42:01,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14690 conditions, 2217 events. 1250/2217 cut-off events. For 31541/31541 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12480 event pairs, 221 based on Foata normal form. 2/2150 useless extension candidates. Maximal degree in co-relation 14600. Up to 1727 conditions per place. [2024-06-27 22:42:01,131 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 223 selfloop transitions, 78 changer transitions 0/306 dead transitions. [2024-06-27 22:42:01,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 306 transitions, 4345 flow [2024-06-27 22:42:01,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:42:01,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:42:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 22:42:01,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-27 22:42:01,133 INFO L175 Difference]: Start difference. First operand has 191 places, 250 transitions, 3465 flow. Second operand 9 states and 159 transitions. [2024-06-27 22:42:01,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 306 transitions, 4345 flow [2024-06-27 22:42:01,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 306 transitions, 4229 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-27 22:42:01,224 INFO L231 Difference]: Finished difference. Result has 198 places, 257 transitions, 3722 flow [2024-06-27 22:42:01,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3351, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3722, PETRI_PLACES=198, PETRI_TRANSITIONS=257} [2024-06-27 22:42:01,225 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 158 predicate places. [2024-06-27 22:42:01,225 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 257 transitions, 3722 flow [2024-06-27 22:42:01,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:01,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:01,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:01,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:42:01,226 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:01,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:01,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1090993519, now seen corresponding path program 2 times [2024-06-27 22:42:01,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:01,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862159777] [2024-06-27 22:42:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:01,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:10,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:10,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:10,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862159777] [2024-06-27 22:42:10,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862159777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:10,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:10,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:42:10,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767699109] [2024-06-27 22:42:10,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:10,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:42:10,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:10,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:42:10,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:42:10,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:42:10,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 257 transitions, 3722 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:10,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:10,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:42:10,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:11,658 INFO L124 PetriNetUnfolderBase]: 1280/2257 cut-off events. [2024-06-27 22:42:11,658 INFO L125 PetriNetUnfolderBase]: For 33597/33597 co-relation queries the response was YES. [2024-06-27 22:42:11,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15373 conditions, 2257 events. 1280/2257 cut-off events. For 33597/33597 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12680 event pairs, 202 based on Foata normal form. 2/2192 useless extension candidates. Maximal degree in co-relation 15279. Up to 1756 conditions per place. [2024-06-27 22:42:11,676 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 233 selfloop transitions, 70 changer transitions 0/308 dead transitions. [2024-06-27 22:42:11,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 308 transitions, 4600 flow [2024-06-27 22:42:11,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:11,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:11,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 22:42:11,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-27 22:42:11,681 INFO L175 Difference]: Start difference. First operand has 198 places, 257 transitions, 3722 flow. Second operand 10 states and 169 transitions. [2024-06-27 22:42:11,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 308 transitions, 4600 flow [2024-06-27 22:42:11,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 308 transitions, 4491 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-27 22:42:11,787 INFO L231 Difference]: Finished difference. Result has 203 places, 260 transitions, 3835 flow [2024-06-27 22:42:11,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3613, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3835, PETRI_PLACES=203, PETRI_TRANSITIONS=260} [2024-06-27 22:42:11,788 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 163 predicate places. [2024-06-27 22:42:11,788 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 260 transitions, 3835 flow [2024-06-27 22:42:11,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:11,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:11,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:11,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:42:11,789 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:11,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:11,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1467760839, now seen corresponding path program 3 times [2024-06-27 22:42:11,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:11,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110487766] [2024-06-27 22:42:11,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:11,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:20,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:20,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:20,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110487766] [2024-06-27 22:42:20,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110487766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:20,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:20,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:42:20,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394238074] [2024-06-27 22:42:20,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:20,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:42:20,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:20,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:42:20,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:42:20,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:42:20,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 260 transitions, 3835 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:20,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:20,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:42:20,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:21,557 INFO L124 PetriNetUnfolderBase]: 1294/2305 cut-off events. [2024-06-27 22:42:21,557 INFO L125 PetriNetUnfolderBase]: For 34050/34050 co-relation queries the response was YES. [2024-06-27 22:42:21,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15741 conditions, 2305 events. 1294/2305 cut-off events. For 34050/34050 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13174 event pairs, 220 based on Foata normal form. 2/2232 useless extension candidates. Maximal degree in co-relation 15646. Up to 1862 conditions per place. [2024-06-27 22:42:21,580 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 252 selfloop transitions, 54 changer transitions 0/311 dead transitions. [2024-06-27 22:42:21,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 311 transitions, 4747 flow [2024-06-27 22:42:21,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:42:21,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:42:21,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 22:42:21,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-06-27 22:42:21,582 INFO L175 Difference]: Start difference. First operand has 203 places, 260 transitions, 3835 flow. Second operand 9 states and 154 transitions. [2024-06-27 22:42:21,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 311 transitions, 4747 flow [2024-06-27 22:42:21,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 311 transitions, 4561 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 22:42:21,703 INFO L231 Difference]: Finished difference. Result has 206 places, 265 transitions, 3884 flow [2024-06-27 22:42:21,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3649, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3884, PETRI_PLACES=206, PETRI_TRANSITIONS=265} [2024-06-27 22:42:21,703 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 166 predicate places. [2024-06-27 22:42:21,704 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 265 transitions, 3884 flow [2024-06-27 22:42:21,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:21,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:21,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:21,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:42:21,704 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:21,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:21,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1467760963, now seen corresponding path program 3 times [2024-06-27 22:42:21,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:21,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320237613] [2024-06-27 22:42:21,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:21,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:32,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:32,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:32,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320237613] [2024-06-27 22:42:32,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320237613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:32,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:32,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:42:32,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628200283] [2024-06-27 22:42:32,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:32,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:42:32,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:32,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:42:32,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:42:32,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:42:32,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 265 transitions, 3884 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:32,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:32,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:42:32,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:33,707 INFO L124 PetriNetUnfolderBase]: 1334/2352 cut-off events. [2024-06-27 22:42:33,707 INFO L125 PetriNetUnfolderBase]: For 36242/36242 co-relation queries the response was YES. [2024-06-27 22:42:33,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16207 conditions, 2352 events. 1334/2352 cut-off events. For 36242/36242 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13319 event pairs, 220 based on Foata normal form. 2/2284 useless extension candidates. Maximal degree in co-relation 16109. Up to 1788 conditions per place. [2024-06-27 22:42:33,728 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 240 selfloop transitions, 74 changer transitions 0/319 dead transitions. [2024-06-27 22:42:33,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 319 transitions, 4862 flow [2024-06-27 22:42:33,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:33,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:33,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 22:42:33,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-27 22:42:33,729 INFO L175 Difference]: Start difference. First operand has 206 places, 265 transitions, 3884 flow. Second operand 10 states and 172 transitions. [2024-06-27 22:42:33,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 319 transitions, 4862 flow [2024-06-27 22:42:33,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 319 transitions, 4733 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-27 22:42:33,849 INFO L231 Difference]: Finished difference. Result has 212 places, 269 transitions, 4008 flow [2024-06-27 22:42:33,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3755, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4008, PETRI_PLACES=212, PETRI_TRANSITIONS=269} [2024-06-27 22:42:33,850 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 172 predicate places. [2024-06-27 22:42:33,850 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 269 transitions, 4008 flow [2024-06-27 22:42:33,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:33,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:33,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:33,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:42:33,851 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:33,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:33,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1206284689, now seen corresponding path program 4 times [2024-06-27 22:42:33,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:33,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128792802] [2024-06-27 22:42:33,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:33,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:39,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:39,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:39,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128792802] [2024-06-27 22:42:39,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128792802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:39,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:39,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:42:39,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510680041] [2024-06-27 22:42:39,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:39,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:42:39,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:39,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:42:39,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:42:39,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:42:39,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 269 transitions, 4008 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:39,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:39,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:42:39,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:40,368 INFO L124 PetriNetUnfolderBase]: 1344/2382 cut-off events. [2024-06-27 22:42:40,368 INFO L125 PetriNetUnfolderBase]: For 36381/36381 co-relation queries the response was YES. [2024-06-27 22:42:40,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16526 conditions, 2382 events. 1344/2382 cut-off events. For 36381/36381 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 13583 event pairs, 246 based on Foata normal form. 1/2308 useless extension candidates. Maximal degree in co-relation 16426. Up to 2002 conditions per place. [2024-06-27 22:42:40,395 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 247 selfloop transitions, 52 changer transitions 0/304 dead transitions. [2024-06-27 22:42:40,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 304 transitions, 4769 flow [2024-06-27 22:42:40,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:42:40,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:42:40,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-27 22:42:40,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2024-06-27 22:42:40,396 INFO L175 Difference]: Start difference. First operand has 212 places, 269 transitions, 4008 flow. Second operand 8 states and 134 transitions. [2024-06-27 22:42:40,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 304 transitions, 4769 flow [2024-06-27 22:42:40,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 304 transitions, 4630 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 22:42:40,531 INFO L231 Difference]: Finished difference. Result has 217 places, 274 transitions, 4106 flow [2024-06-27 22:42:40,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3871, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4106, PETRI_PLACES=217, PETRI_TRANSITIONS=274} [2024-06-27 22:42:40,532 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 177 predicate places. [2024-06-27 22:42:40,532 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 274 transitions, 4106 flow [2024-06-27 22:42:40,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:40,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:40,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:40,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:42:40,533 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:40,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:40,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1206457669, now seen corresponding path program 5 times [2024-06-27 22:42:40,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:40,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106416711] [2024-06-27 22:42:40,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:40,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:45,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:45,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:45,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106416711] [2024-06-27 22:42:45,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106416711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:45,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:45,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:42:45,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646717503] [2024-06-27 22:42:45,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:45,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:42:45,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:45,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:42:45,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:42:45,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:42:45,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 274 transitions, 4106 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:45,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:45,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:42:45,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:46,887 INFO L124 PetriNetUnfolderBase]: 1364/2412 cut-off events. [2024-06-27 22:42:46,887 INFO L125 PetriNetUnfolderBase]: For 37706/37706 co-relation queries the response was YES. [2024-06-27 22:42:46,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16908 conditions, 2412 events. 1364/2412 cut-off events. For 37706/37706 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 13738 event pairs, 244 based on Foata normal form. 2/2339 useless extension candidates. Maximal degree in co-relation 16804. Up to 2044 conditions per place. [2024-06-27 22:42:46,912 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 258 selfloop transitions, 45 changer transitions 0/308 dead transitions. [2024-06-27 22:42:46,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 308 transitions, 4880 flow [2024-06-27 22:42:46,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:42:46,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:42:46,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-27 22:42:46,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2024-06-27 22:42:46,914 INFO L175 Difference]: Start difference. First operand has 217 places, 274 transitions, 4106 flow. Second operand 9 states and 141 transitions. [2024-06-27 22:42:46,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 308 transitions, 4880 flow [2024-06-27 22:42:47,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 308 transitions, 4761 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-27 22:42:47,037 INFO L231 Difference]: Finished difference. Result has 223 places, 278 transitions, 4187 flow [2024-06-27 22:42:47,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3987, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4187, PETRI_PLACES=223, PETRI_TRANSITIONS=278} [2024-06-27 22:42:47,037 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 183 predicate places. [2024-06-27 22:42:47,037 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 278 transitions, 4187 flow [2024-06-27 22:42:47,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:47,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:47,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:47,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:42:47,038 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:47,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:47,039 INFO L85 PathProgramCache]: Analyzing trace with hash -70012171, now seen corresponding path program 1 times [2024-06-27 22:42:47,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:47,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139323008] [2024-06-27 22:42:47,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:47,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:42:53,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:42:53,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:42:53,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139323008] [2024-06-27 22:42:53,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139323008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:42:53,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:42:53,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:42:53,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623069516] [2024-06-27 22:42:53,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:42:53,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:42:53,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:42:53,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:42:53,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:42:53,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:42:53,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 278 transitions, 4187 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:53,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:42:53,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:42:53,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:42:55,111 INFO L124 PetriNetUnfolderBase]: 1386/2480 cut-off events. [2024-06-27 22:42:55,111 INFO L125 PetriNetUnfolderBase]: For 41081/41081 co-relation queries the response was YES. [2024-06-27 22:42:55,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17266 conditions, 2480 events. 1386/2480 cut-off events. For 41081/41081 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 14445 event pairs, 209 based on Foata normal form. 2/2397 useless extension candidates. Maximal degree in co-relation 17161. Up to 1986 conditions per place. [2024-06-27 22:42:55,134 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 267 selfloop transitions, 52 changer transitions 0/324 dead transitions. [2024-06-27 22:42:55,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 324 transitions, 5026 flow [2024-06-27 22:42:55,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:42:55,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:42:55,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 22:42:55,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-27 22:42:55,136 INFO L175 Difference]: Start difference. First operand has 223 places, 278 transitions, 4187 flow. Second operand 10 states and 163 transitions. [2024-06-27 22:42:55,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 324 transitions, 5026 flow [2024-06-27 22:42:55,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 324 transitions, 4819 flow, removed 40 selfloop flow, removed 10 redundant places. [2024-06-27 22:42:55,268 INFO L231 Difference]: Finished difference. Result has 223 places, 279 transitions, 4102 flow [2024-06-27 22:42:55,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3980, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4102, PETRI_PLACES=223, PETRI_TRANSITIONS=279} [2024-06-27 22:42:55,269 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 183 predicate places. [2024-06-27 22:42:55,269 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 279 transitions, 4102 flow [2024-06-27 22:42:55,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:42:55,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:42:55,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:42:55,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:42:55,270 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:42:55,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:42:55,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1206279915, now seen corresponding path program 4 times [2024-06-27 22:42:55,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:42:55,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948397453] [2024-06-27 22:42:55,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:42:55,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:42:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:00,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:00,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948397453] [2024-06-27 22:43:00,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948397453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:00,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:00,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:43:00,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96535295] [2024-06-27 22:43:00,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:00,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:43:00,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:00,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:43:00,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:43:00,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:43:00,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 279 transitions, 4102 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:00,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:00,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:43:00,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:01,651 INFO L124 PetriNetUnfolderBase]: 1406/2486 cut-off events. [2024-06-27 22:43:01,651 INFO L125 PetriNetUnfolderBase]: For 40926/40926 co-relation queries the response was YES. [2024-06-27 22:43:01,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17313 conditions, 2486 events. 1406/2486 cut-off events. For 40926/40926 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 14220 event pairs, 230 based on Foata normal form. 2/2412 useless extension candidates. Maximal degree in co-relation 17207. Up to 1872 conditions per place. [2024-06-27 22:43:01,675 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 212 selfloop transitions, 106 changer transitions 0/323 dead transitions. [2024-06-27 22:43:01,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 323 transitions, 4969 flow [2024-06-27 22:43:01,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:43:01,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:43:01,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 22:43:01,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:43:01,676 INFO L175 Difference]: Start difference. First operand has 223 places, 279 transitions, 4102 flow. Second operand 8 states and 144 transitions. [2024-06-27 22:43:01,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 323 transitions, 4969 flow [2024-06-27 22:43:01,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 323 transitions, 4862 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 22:43:01,810 INFO L231 Difference]: Finished difference. Result has 225 places, 284 transitions, 4379 flow [2024-06-27 22:43:01,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3995, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4379, PETRI_PLACES=225, PETRI_TRANSITIONS=284} [2024-06-27 22:43:01,811 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 185 predicate places. [2024-06-27 22:43:01,811 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 284 transitions, 4379 flow [2024-06-27 22:43:01,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:01,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:01,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:01,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:43:01,812 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:01,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:01,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1206280039, now seen corresponding path program 6 times [2024-06-27 22:43:01,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:01,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351057382] [2024-06-27 22:43:01,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:01,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:07,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:07,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351057382] [2024-06-27 22:43:07,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351057382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:07,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:07,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:43:07,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123437424] [2024-06-27 22:43:07,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:07,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:43:07,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:07,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:43:07,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:43:07,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:43:07,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 284 transitions, 4379 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:07,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:07,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:43:07,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:08,327 INFO L124 PetriNetUnfolderBase]: 1416/2507 cut-off events. [2024-06-27 22:43:08,328 INFO L125 PetriNetUnfolderBase]: For 43359/43359 co-relation queries the response was YES. [2024-06-27 22:43:08,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18011 conditions, 2507 events. 1416/2507 cut-off events. For 43359/43359 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 14427 event pairs, 261 based on Foata normal form. 1/2430 useless extension candidates. Maximal degree in co-relation 17902. Up to 2064 conditions per place. [2024-06-27 22:43:08,352 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 252 selfloop transitions, 62 changer transitions 0/319 dead transitions. [2024-06-27 22:43:08,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 319 transitions, 5171 flow [2024-06-27 22:43:08,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:43:08,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:43:08,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-27 22:43:08,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382716049382716 [2024-06-27 22:43:08,354 INFO L175 Difference]: Start difference. First operand has 225 places, 284 transitions, 4379 flow. Second operand 9 states and 142 transitions. [2024-06-27 22:43:08,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 319 transitions, 5171 flow [2024-06-27 22:43:08,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 319 transitions, 5134 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 22:43:08,512 INFO L231 Difference]: Finished difference. Result has 233 places, 289 transitions, 4592 flow [2024-06-27 22:43:08,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4342, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4592, PETRI_PLACES=233, PETRI_TRANSITIONS=289} [2024-06-27 22:43:08,513 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 193 predicate places. [2024-06-27 22:43:08,513 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 289 transitions, 4592 flow [2024-06-27 22:43:08,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:08,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:08,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:08,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:43:08,514 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:08,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:08,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1797018749, now seen corresponding path program 2 times [2024-06-27 22:43:08,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:08,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946832530] [2024-06-27 22:43:08,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:08,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:14,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:14,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:14,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946832530] [2024-06-27 22:43:14,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946832530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:14,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:14,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:43:14,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678529815] [2024-06-27 22:43:14,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:14,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:43:14,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:14,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:43:14,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:43:14,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:43:14,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 289 transitions, 4592 flow. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:14,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:14,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:43:14,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:16,238 INFO L124 PetriNetUnfolderBase]: 1438/2549 cut-off events. [2024-06-27 22:43:16,238 INFO L125 PetriNetUnfolderBase]: For 48221/48227 co-relation queries the response was YES. [2024-06-27 22:43:16,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18621 conditions, 2549 events. 1438/2549 cut-off events. For 48221/48227 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 14698 event pairs, 184 based on Foata normal form. 8/2478 useless extension candidates. Maximal degree in co-relation 18509. Up to 1851 conditions per place. [2024-06-27 22:43:16,263 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 264 selfloop transitions, 61 changer transitions 0/330 dead transitions. [2024-06-27 22:43:16,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 330 transitions, 5548 flow [2024-06-27 22:43:16,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:43:16,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:43:16,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-27 22:43:16,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 22:43:16,264 INFO L175 Difference]: Start difference. First operand has 233 places, 289 transitions, 4592 flow. Second operand 9 states and 144 transitions. [2024-06-27 22:43:16,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 330 transitions, 5548 flow [2024-06-27 22:43:16,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 330 transitions, 5380 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 22:43:16,440 INFO L231 Difference]: Finished difference. Result has 236 places, 290 transitions, 4566 flow [2024-06-27 22:43:16,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4424, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4566, PETRI_PLACES=236, PETRI_TRANSITIONS=290} [2024-06-27 22:43:16,442 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 196 predicate places. [2024-06-27 22:43:16,442 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 290 transitions, 4566 flow [2024-06-27 22:43:16,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:16,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:16,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:16,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:43:16,443 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:16,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:16,443 INFO L85 PathProgramCache]: Analyzing trace with hash -366905219, now seen corresponding path program 3 times [2024-06-27 22:43:16,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:16,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184019259] [2024-06-27 22:43:16,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:16,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:26,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:26,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:26,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184019259] [2024-06-27 22:43:26,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184019259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:26,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:26,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:43:26,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715423128] [2024-06-27 22:43:26,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:26,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:43:26,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:26,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:43:26,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:43:26,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:43:26,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 290 transitions, 4566 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:26,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:26,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:43:26,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:28,114 INFO L124 PetriNetUnfolderBase]: 1460/2602 cut-off events. [2024-06-27 22:43:28,114 INFO L125 PetriNetUnfolderBase]: For 50376/50382 co-relation queries the response was YES. [2024-06-27 22:43:28,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18944 conditions, 2602 events. 1460/2602 cut-off events. For 50376/50382 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 15147 event pairs, 210 based on Foata normal form. 8/2526 useless extension candidates. Maximal degree in co-relation 18831. Up to 2009 conditions per place. [2024-06-27 22:43:28,141 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 265 selfloop transitions, 60 changer transitions 0/330 dead transitions. [2024-06-27 22:43:28,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 330 transitions, 5470 flow [2024-06-27 22:43:28,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:43:28,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:43:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-27 22:43:28,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44753086419753085 [2024-06-27 22:43:28,143 INFO L175 Difference]: Start difference. First operand has 236 places, 290 transitions, 4566 flow. Second operand 9 states and 145 transitions. [2024-06-27 22:43:28,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 330 transitions, 5470 flow [2024-06-27 22:43:28,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 330 transitions, 5374 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 22:43:28,324 INFO L231 Difference]: Finished difference. Result has 240 places, 291 transitions, 4614 flow [2024-06-27 22:43:28,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4473, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4614, PETRI_PLACES=240, PETRI_TRANSITIONS=291} [2024-06-27 22:43:28,324 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 200 predicate places. [2024-06-27 22:43:28,324 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 291 transitions, 4614 flow [2024-06-27 22:43:28,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:28,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:28,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:28,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:43:28,325 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:28,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:28,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1595195687, now seen corresponding path program 7 times [2024-06-27 22:43:28,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:28,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155643929] [2024-06-27 22:43:28,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:28,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:34,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:34,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:34,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155643929] [2024-06-27 22:43:34,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155643929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:34,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:34,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:43:34,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864345490] [2024-06-27 22:43:34,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:34,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:43:34,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:34,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:43:34,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:43:34,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:43:34,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 291 transitions, 4614 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:34,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:34,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:43:34,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:35,496 INFO L124 PetriNetUnfolderBase]: 1571/2798 cut-off events. [2024-06-27 22:43:35,496 INFO L125 PetriNetUnfolderBase]: For 58446/58452 co-relation queries the response was YES. [2024-06-27 22:43:35,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20805 conditions, 2798 events. 1571/2798 cut-off events. For 58446/58452 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 16557 event pairs, 239 based on Foata normal form. 8/2714 useless extension candidates. Maximal degree in co-relation 20691. Up to 2157 conditions per place. [2024-06-27 22:43:35,525 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 276 selfloop transitions, 79 changer transitions 0/360 dead transitions. [2024-06-27 22:43:35,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 360 transitions, 6094 flow [2024-06-27 22:43:35,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:43:35,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:43:35,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 22:43:35,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-27 22:43:35,526 INFO L175 Difference]: Start difference. First operand has 240 places, 291 transitions, 4614 flow. Second operand 11 states and 182 transitions. [2024-06-27 22:43:35,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 360 transitions, 6094 flow [2024-06-27 22:43:35,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 360 transitions, 5936 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 22:43:35,744 INFO L231 Difference]: Finished difference. Result has 245 places, 306 transitions, 5005 flow [2024-06-27 22:43:35,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4456, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5005, PETRI_PLACES=245, PETRI_TRANSITIONS=306} [2024-06-27 22:43:35,744 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 205 predicate places. [2024-06-27 22:43:35,745 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 306 transitions, 5005 flow [2024-06-27 22:43:35,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:35,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:35,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:35,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:43:35,745 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:35,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:35,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1329314081, now seen corresponding path program 1 times [2024-06-27 22:43:35,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:35,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673958234] [2024-06-27 22:43:35,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:35,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:40,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:40,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673958234] [2024-06-27 22:43:40,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673958234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:40,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:40,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:43:40,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935359977] [2024-06-27 22:43:40,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:40,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:43:40,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:40,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:43:40,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:43:40,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:43:40,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 306 transitions, 5005 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:40,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:40,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:43:40,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:42,207 INFO L124 PetriNetUnfolderBase]: 1596/2840 cut-off events. [2024-06-27 22:43:42,208 INFO L125 PetriNetUnfolderBase]: For 62396/62402 co-relation queries the response was YES. [2024-06-27 22:43:42,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21651 conditions, 2840 events. 1596/2840 cut-off events. For 62396/62402 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16820 event pairs, 224 based on Foata normal form. 7/2754 useless extension candidates. Maximal degree in co-relation 21535. Up to 2208 conditions per place. [2024-06-27 22:43:42,237 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 275 selfloop transitions, 69 changer transitions 0/349 dead transitions. [2024-06-27 22:43:42,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 349 transitions, 6029 flow [2024-06-27 22:43:42,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:43:42,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:43:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 22:43:42,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2024-06-27 22:43:42,239 INFO L175 Difference]: Start difference. First operand has 245 places, 306 transitions, 5005 flow. Second operand 9 states and 146 transitions. [2024-06-27 22:43:42,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 349 transitions, 6029 flow [2024-06-27 22:43:42,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 349 transitions, 5835 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-27 22:43:42,469 INFO L231 Difference]: Finished difference. Result has 246 places, 311 transitions, 5093 flow [2024-06-27 22:43:42,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4811, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5093, PETRI_PLACES=246, PETRI_TRANSITIONS=311} [2024-06-27 22:43:42,470 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 206 predicate places. [2024-06-27 22:43:42,470 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 311 transitions, 5093 flow [2024-06-27 22:43:42,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:42,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:42,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:42,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:43:42,473 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:42,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:42,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1595011361, now seen corresponding path program 2 times [2024-06-27 22:43:42,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:42,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966893147] [2024-06-27 22:43:42,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:42,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:48,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:48,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966893147] [2024-06-27 22:43:48,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966893147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:48,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:48,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:43:48,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879028980] [2024-06-27 22:43:48,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:48,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:43:48,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:48,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:43:48,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:43:48,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:43:48,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 311 transitions, 5093 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:48,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:48,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:43:48,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:49,595 INFO L124 PetriNetUnfolderBase]: 1599/2854 cut-off events. [2024-06-27 22:43:49,595 INFO L125 PetriNetUnfolderBase]: For 62117/62123 co-relation queries the response was YES. [2024-06-27 22:43:49,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21671 conditions, 2854 events. 1599/2854 cut-off events. For 62117/62123 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16959 event pairs, 255 based on Foata normal form. 7/2765 useless extension candidates. Maximal degree in co-relation 21555. Up to 2350 conditions per place. [2024-06-27 22:43:49,626 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 283 selfloop transitions, 60 changer transitions 0/348 dead transitions. [2024-06-27 22:43:49,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 348 transitions, 5983 flow [2024-06-27 22:43:49,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:43:49,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:43:49,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-27 22:43:49,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 22:43:49,627 INFO L175 Difference]: Start difference. First operand has 246 places, 311 transitions, 5093 flow. Second operand 9 states and 144 transitions. [2024-06-27 22:43:49,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 348 transitions, 5983 flow [2024-06-27 22:43:49,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 348 transitions, 5757 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-27 22:43:49,870 INFO L231 Difference]: Finished difference. Result has 248 places, 313 transitions, 5073 flow [2024-06-27 22:43:49,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4867, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5073, PETRI_PLACES=248, PETRI_TRANSITIONS=313} [2024-06-27 22:43:49,870 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 208 predicate places. [2024-06-27 22:43:49,871 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 313 transitions, 5073 flow [2024-06-27 22:43:49,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:49,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:49,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:49,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:43:49,871 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:49,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:49,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1595191037, now seen corresponding path program 8 times [2024-06-27 22:43:49,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:49,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706361730] [2024-06-27 22:43:49,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:49,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:43:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:43:55,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:43:55,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706361730] [2024-06-27 22:43:55,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706361730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:43:55,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:43:55,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:43:55,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507011296] [2024-06-27 22:43:55,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:43:55,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:43:55,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:43:55,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:43:55,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:43:55,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:43:55,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 313 transitions, 5073 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:55,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:43:55,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:43:55,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:43:56,770 INFO L124 PetriNetUnfolderBase]: 1629/2887 cut-off events. [2024-06-27 22:43:56,770 INFO L125 PetriNetUnfolderBase]: For 64880/64886 co-relation queries the response was YES. [2024-06-27 22:43:56,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21993 conditions, 2887 events. 1629/2887 cut-off events. For 64880/64886 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 17106 event pairs, 309 based on Foata normal form. 9/2804 useless extension candidates. Maximal degree in co-relation 21876. Up to 2453 conditions per place. [2024-06-27 22:43:56,796 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 296 selfloop transitions, 49 changer transitions 0/350 dead transitions. [2024-06-27 22:43:56,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 350 transitions, 6003 flow [2024-06-27 22:43:56,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:43:56,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:43:56,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 22:43:56,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-27 22:43:56,798 INFO L175 Difference]: Start difference. First operand has 248 places, 313 transitions, 5073 flow. Second operand 9 states and 148 transitions. [2024-06-27 22:43:56,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 350 transitions, 6003 flow [2024-06-27 22:43:56,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 350 transitions, 5845 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 22:43:56,993 INFO L231 Difference]: Finished difference. Result has 250 places, 318 transitions, 5168 flow [2024-06-27 22:43:56,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4915, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5168, PETRI_PLACES=250, PETRI_TRANSITIONS=318} [2024-06-27 22:43:56,993 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 210 predicate places. [2024-06-27 22:43:56,993 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 318 transitions, 5168 flow [2024-06-27 22:43:56,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:43:56,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:43:56,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:43:56,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:43:56,994 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:43:56,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:43:56,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1338517547, now seen corresponding path program 9 times [2024-06-27 22:43:56,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:43:56,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956704670] [2024-06-27 22:43:56,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:43:56,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:43:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:02,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:02,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:02,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956704670] [2024-06-27 22:44:02,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956704670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:02,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:02,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:44:02,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570473298] [2024-06-27 22:44:02,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:02,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:44:02,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:02,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:44:02,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:44:02,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:44:02,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 318 transitions, 5168 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:02,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:02,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:44:02,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:03,835 INFO L124 PetriNetUnfolderBase]: 1627/2878 cut-off events. [2024-06-27 22:44:03,835 INFO L125 PetriNetUnfolderBase]: For 63736/63742 co-relation queries the response was YES. [2024-06-27 22:44:03,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21938 conditions, 2878 events. 1627/2878 cut-off events. For 63736/63742 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 17025 event pairs, 309 based on Foata normal form. 7/2795 useless extension candidates. Maximal degree in co-relation 21821. Up to 2465 conditions per place. [2024-06-27 22:44:03,873 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 295 selfloop transitions, 49 changer transitions 0/349 dead transitions. [2024-06-27 22:44:03,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 349 transitions, 6026 flow [2024-06-27 22:44:03,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:44:03,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:44:03,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-27 22:44:03,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-27 22:44:03,887 INFO L175 Difference]: Start difference. First operand has 250 places, 318 transitions, 5168 flow. Second operand 9 states and 138 transitions. [2024-06-27 22:44:03,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 349 transitions, 6026 flow [2024-06-27 22:44:04,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 349 transitions, 5875 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-27 22:44:04,117 INFO L231 Difference]: Finished difference. Result has 255 places, 322 transitions, 5235 flow [2024-06-27 22:44:04,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5017, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5235, PETRI_PLACES=255, PETRI_TRANSITIONS=322} [2024-06-27 22:44:04,118 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 215 predicate places. [2024-06-27 22:44:04,118 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 322 transitions, 5235 flow [2024-06-27 22:44:04,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:04,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:04,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:04,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:44:04,118 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:04,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:04,119 INFO L85 PathProgramCache]: Analyzing trace with hash 333512973, now seen corresponding path program 10 times [2024-06-27 22:44:04,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:04,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849144119] [2024-06-27 22:44:04,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:04,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:09,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:09,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849144119] [2024-06-27 22:44:09,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849144119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:09,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:09,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:44:09,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344112538] [2024-06-27 22:44:09,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:09,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:44:09,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:09,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:44:09,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:44:09,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:44:09,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 322 transitions, 5235 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:09,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:09,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:44:09,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:10,916 INFO L124 PetriNetUnfolderBase]: 1630/2901 cut-off events. [2024-06-27 22:44:10,917 INFO L125 PetriNetUnfolderBase]: For 65711/65717 co-relation queries the response was YES. [2024-06-27 22:44:10,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22027 conditions, 2901 events. 1630/2901 cut-off events. For 65711/65717 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 17272 event pairs, 261 based on Foata normal form. 7/2812 useless extension candidates. Maximal degree in co-relation 21907. Up to 2431 conditions per place. [2024-06-27 22:44:10,952 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 307 selfloop transitions, 56 changer transitions 0/368 dead transitions. [2024-06-27 22:44:10,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 368 transitions, 6232 flow [2024-06-27 22:44:10,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:44:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:44:10,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 22:44:10,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-27 22:44:10,953 INFO L175 Difference]: Start difference. First operand has 255 places, 322 transitions, 5235 flow. Second operand 8 states and 142 transitions. [2024-06-27 22:44:10,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 368 transitions, 6232 flow [2024-06-27 22:44:11,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 368 transitions, 6048 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-27 22:44:11,188 INFO L231 Difference]: Finished difference. Result has 259 places, 329 transitions, 5381 flow [2024-06-27 22:44:11,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5051, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5381, PETRI_PLACES=259, PETRI_TRANSITIONS=329} [2024-06-27 22:44:11,189 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 219 predicate places. [2024-06-27 22:44:11,189 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 329 transitions, 5381 flow [2024-06-27 22:44:11,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:11,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:11,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:11,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:44:11,190 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:11,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:11,190 INFO L85 PathProgramCache]: Analyzing trace with hash -2063227157, now seen corresponding path program 5 times [2024-06-27 22:44:11,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:11,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739366167] [2024-06-27 22:44:11,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:11,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:17,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:17,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739366167] [2024-06-27 22:44:17,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739366167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:17,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:17,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:44:17,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861297695] [2024-06-27 22:44:17,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:17,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:44:17,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:17,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:44:17,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:44:17,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:44:17,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 329 transitions, 5381 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:17,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:17,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:44:17,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:18,175 INFO L124 PetriNetUnfolderBase]: 1627/2875 cut-off events. [2024-06-27 22:44:18,175 INFO L125 PetriNetUnfolderBase]: For 66904/66910 co-relation queries the response was YES. [2024-06-27 22:44:18,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22066 conditions, 2875 events. 1627/2875 cut-off events. For 66904/66910 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 16985 event pairs, 308 based on Foata normal form. 8/2794 useless extension candidates. Maximal degree in co-relation 21944. Up to 2495 conditions per place. [2024-06-27 22:44:18,206 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 317 selfloop transitions, 37 changer transitions 0/359 dead transitions. [2024-06-27 22:44:18,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 359 transitions, 6183 flow [2024-06-27 22:44:18,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:44:18,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:44:18,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-27 22:44:18,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4228395061728395 [2024-06-27 22:44:18,208 INFO L175 Difference]: Start difference. First operand has 259 places, 329 transitions, 5381 flow. Second operand 9 states and 137 transitions. [2024-06-27 22:44:18,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 359 transitions, 6183 flow [2024-06-27 22:44:18,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 359 transitions, 5985 flow, removed 74 selfloop flow, removed 3 redundant places. [2024-06-27 22:44:18,499 INFO L231 Difference]: Finished difference. Result has 266 places, 331 transitions, 5294 flow [2024-06-27 22:44:18,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5193, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5294, PETRI_PLACES=266, PETRI_TRANSITIONS=331} [2024-06-27 22:44:18,499 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 226 predicate places. [2024-06-27 22:44:18,499 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 331 transitions, 5294 flow [2024-06-27 22:44:18,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:18,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:18,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:18,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:44:18,500 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:18,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:18,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2063042459, now seen corresponding path program 4 times [2024-06-27 22:44:18,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:18,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274335529] [2024-06-27 22:44:18,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:18,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:25,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:25,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274335529] [2024-06-27 22:44:25,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274335529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:25,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:25,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:44:25,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875607806] [2024-06-27 22:44:25,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:25,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:44:25,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:25,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:44:25,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:44:25,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:44:25,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 331 transitions, 5294 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:25,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:25,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:44:25,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:27,174 INFO L124 PetriNetUnfolderBase]: 1649/2934 cut-off events. [2024-06-27 22:44:27,174 INFO L125 PetriNetUnfolderBase]: For 68951/68957 co-relation queries the response was YES. [2024-06-27 22:44:27,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22157 conditions, 2934 events. 1649/2934 cut-off events. For 68951/68957 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 17509 event pairs, 263 based on Foata normal form. 8/2846 useless extension candidates. Maximal degree in co-relation 22031. Up to 2452 conditions per place. [2024-06-27 22:44:27,207 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 314 selfloop transitions, 49 changer transitions 0/368 dead transitions. [2024-06-27 22:44:27,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 368 transitions, 6201 flow [2024-06-27 22:44:27,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:44:27,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:44:27,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-27 22:44:27,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44135802469135804 [2024-06-27 22:44:27,209 INFO L175 Difference]: Start difference. First operand has 266 places, 331 transitions, 5294 flow. Second operand 9 states and 143 transitions. [2024-06-27 22:44:27,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 368 transitions, 6201 flow [2024-06-27 22:44:27,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 368 transitions, 6126 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 22:44:27,466 INFO L231 Difference]: Finished difference. Result has 269 places, 332 transitions, 5340 flow [2024-06-27 22:44:27,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5219, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5340, PETRI_PLACES=269, PETRI_TRANSITIONS=332} [2024-06-27 22:44:27,467 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 229 predicate places. [2024-06-27 22:44:27,467 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 332 transitions, 5340 flow [2024-06-27 22:44:27,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:27,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:27,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:27,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:44:27,467 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:27,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:27,468 INFO L85 PathProgramCache]: Analyzing trace with hash 108247797, now seen corresponding path program 5 times [2024-06-27 22:44:27,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:27,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760829245] [2024-06-27 22:44:27,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:27,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:33,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:33,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:33,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760829245] [2024-06-27 22:44:33,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760829245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:33,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:33,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:44:33,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125250208] [2024-06-27 22:44:33,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:33,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:44:33,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:33,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:44:33,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:44:33,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:44:33,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 332 transitions, 5340 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:33,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:33,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:44:33,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:34,818 INFO L124 PetriNetUnfolderBase]: 1646/2914 cut-off events. [2024-06-27 22:44:34,819 INFO L125 PetriNetUnfolderBase]: For 68043/68049 co-relation queries the response was YES. [2024-06-27 22:44:34,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22132 conditions, 2914 events. 1646/2914 cut-off events. For 68043/68049 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 17309 event pairs, 200 based on Foata normal form. 8/2831 useless extension candidates. Maximal degree in co-relation 22005. Up to 2245 conditions per place. [2024-06-27 22:44:34,852 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 297 selfloop transitions, 61 changer transitions 0/363 dead transitions. [2024-06-27 22:44:34,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 363 transitions, 6236 flow [2024-06-27 22:44:34,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:44:34,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:44:34,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-27 22:44:34,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 22:44:34,854 INFO L175 Difference]: Start difference. First operand has 269 places, 332 transitions, 5340 flow. Second operand 8 states and 128 transitions. [2024-06-27 22:44:34,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 363 transitions, 6236 flow [2024-06-27 22:44:35,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 363 transitions, 6128 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 22:44:35,122 INFO L231 Difference]: Finished difference. Result has 270 places, 332 transitions, 5365 flow [2024-06-27 22:44:35,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5232, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5365, PETRI_PLACES=270, PETRI_TRANSITIONS=332} [2024-06-27 22:44:35,123 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 230 predicate places. [2024-06-27 22:44:35,123 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 332 transitions, 5365 flow [2024-06-27 22:44:35,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:35,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:35,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:35,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:44:35,124 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:35,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:35,124 INFO L85 PathProgramCache]: Analyzing trace with hash 108247549, now seen corresponding path program 3 times [2024-06-27 22:44:35,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:35,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047530701] [2024-06-27 22:44:35,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:35,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:40,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:40,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047530701] [2024-06-27 22:44:40,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047530701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:40,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:40,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:44:40,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223672480] [2024-06-27 22:44:40,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:40,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:44:40,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:40,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:44:40,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:44:40,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:44:40,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 332 transitions, 5365 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:40,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:40,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:44:40,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:42,177 INFO L124 PetriNetUnfolderBase]: 1649/2925 cut-off events. [2024-06-27 22:44:42,177 INFO L125 PetriNetUnfolderBase]: For 67230/67236 co-relation queries the response was YES. [2024-06-27 22:44:42,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22288 conditions, 2925 events. 1649/2925 cut-off events. For 67230/67236 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 17384 event pairs, 223 based on Foata normal form. 7/2839 useless extension candidates. Maximal degree in co-relation 22160. Up to 2231 conditions per place. [2024-06-27 22:44:42,205 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 270 selfloop transitions, 91 changer transitions 0/366 dead transitions. [2024-06-27 22:44:42,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 366 transitions, 6357 flow [2024-06-27 22:44:42,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:44:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:44:42,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-27 22:44:42,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-27 22:44:42,207 INFO L175 Difference]: Start difference. First operand has 270 places, 332 transitions, 5365 flow. Second operand 8 states and 129 transitions. [2024-06-27 22:44:42,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 366 transitions, 6357 flow [2024-06-27 22:44:42,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 366 transitions, 6223 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 22:44:42,471 INFO L231 Difference]: Finished difference. Result has 270 places, 336 transitions, 5585 flow [2024-06-27 22:44:42,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5231, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5585, PETRI_PLACES=270, PETRI_TRANSITIONS=336} [2024-06-27 22:44:42,472 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 230 predicate places. [2024-06-27 22:44:42,472 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 336 transitions, 5585 flow [2024-06-27 22:44:42,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:42,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:42,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:42,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:44:42,472 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:42,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:42,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1844631156, now seen corresponding path program 1 times [2024-06-27 22:44:42,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:42,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011640190] [2024-06-27 22:44:42,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:42,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:42,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:42,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:42,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011640190] [2024-06-27 22:44:42,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011640190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:42,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:42,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:44:42,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461869792] [2024-06-27 22:44:42,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:42,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:44:42,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:42,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:44:42,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:44:42,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:44:42,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 336 transitions, 5585 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:42,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:42,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:44:42,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:43,514 INFO L124 PetriNetUnfolderBase]: 1878/3384 cut-off events. [2024-06-27 22:44:43,514 INFO L125 PetriNetUnfolderBase]: For 85613/85694 co-relation queries the response was YES. [2024-06-27 22:44:43,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26399 conditions, 3384 events. 1878/3384 cut-off events. For 85613/85694 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 21787 event pairs, 368 based on Foata normal form. 35/3279 useless extension candidates. Maximal degree in co-relation 26272. Up to 1911 conditions per place. [2024-06-27 22:44:43,555 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 278 selfloop transitions, 13 changer transitions 102/525 dead transitions. [2024-06-27 22:44:43,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 525 transitions, 9311 flow [2024-06-27 22:44:43,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:44:43,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:44:43,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 22:44:43,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 22:44:43,556 INFO L175 Difference]: Start difference. First operand has 270 places, 336 transitions, 5585 flow. Second operand 8 states and 140 transitions. [2024-06-27 22:44:43,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 525 transitions, 9311 flow [2024-06-27 22:44:43,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 525 transitions, 9007 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-27 22:44:43,899 INFO L231 Difference]: Finished difference. Result has 277 places, 339 transitions, 5462 flow [2024-06-27 22:44:43,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5393, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5462, PETRI_PLACES=277, PETRI_TRANSITIONS=339} [2024-06-27 22:44:43,899 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 237 predicate places. [2024-06-27 22:44:43,899 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 339 transitions, 5462 flow [2024-06-27 22:44:43,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:43,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:43,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:43,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:44:43,900 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:43,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:43,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1832617626, now seen corresponding path program 1 times [2024-06-27 22:44:43,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:43,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240416980] [2024-06-27 22:44:43,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:43,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:49,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:49,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240416980] [2024-06-27 22:44:49,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240416980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:49,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:49,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:44:49,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987438841] [2024-06-27 22:44:49,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:49,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:44:49,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:49,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:44:49,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:44:49,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:44:49,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 339 transitions, 5462 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:49,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:49,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:44:49,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:51,250 INFO L124 PetriNetUnfolderBase]: 1874/3403 cut-off events. [2024-06-27 22:44:51,251 INFO L125 PetriNetUnfolderBase]: For 94288/94288 co-relation queries the response was YES. [2024-06-27 22:44:51,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26563 conditions, 3403 events. 1874/3403 cut-off events. For 94288/94288 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 21433 event pairs, 410 based on Foata normal form. 8/3410 useless extension candidates. Maximal degree in co-relation 26430. Up to 1862 conditions per place. [2024-06-27 22:44:51,294 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 315 selfloop transitions, 96 changer transitions 3/419 dead transitions. [2024-06-27 22:44:51,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 419 transitions, 7114 flow [2024-06-27 22:44:51,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:44:51,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:44:51,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-27 22:44:51,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-27 22:44:51,295 INFO L175 Difference]: Start difference. First operand has 277 places, 339 transitions, 5462 flow. Second operand 10 states and 192 transitions. [2024-06-27 22:44:51,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 419 transitions, 7114 flow [2024-06-27 22:44:51,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 419 transitions, 7102 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 22:44:51,623 INFO L231 Difference]: Finished difference. Result has 286 places, 342 transitions, 5821 flow [2024-06-27 22:44:51,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5458, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5821, PETRI_PLACES=286, PETRI_TRANSITIONS=342} [2024-06-27 22:44:51,624 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 246 predicate places. [2024-06-27 22:44:51,624 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 342 transitions, 5821 flow [2024-06-27 22:44:51,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:51,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:51,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:51,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:44:51,625 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:51,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:51,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1830743676, now seen corresponding path program 2 times [2024-06-27 22:44:51,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:51,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191266471] [2024-06-27 22:44:51,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:51,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:44:57,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:44:57,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:44:57,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191266471] [2024-06-27 22:44:57,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191266471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:44:57,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:44:57,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:44:57,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224933737] [2024-06-27 22:44:57,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:44:57,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:44:57,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:44:57,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:44:57,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:44:57,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:44:57,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 342 transitions, 5821 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:57,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:44:57,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:44:57,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:44:59,262 INFO L124 PetriNetUnfolderBase]: 2041/3730 cut-off events. [2024-06-27 22:44:59,262 INFO L125 PetriNetUnfolderBase]: For 119841/119841 co-relation queries the response was YES. [2024-06-27 22:44:59,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29710 conditions, 3730 events. 2041/3730 cut-off events. For 119841/119841 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 24127 event pairs, 488 based on Foata normal form. 8/3737 useless extension candidates. Maximal degree in co-relation 29572. Up to 2476 conditions per place. [2024-06-27 22:44:59,310 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 319 selfloop transitions, 94 changer transitions 0/418 dead transitions. [2024-06-27 22:44:59,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 418 transitions, 7433 flow [2024-06-27 22:44:59,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:44:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:44:59,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 22:44:59,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050505050505051 [2024-06-27 22:44:59,311 INFO L175 Difference]: Start difference. First operand has 286 places, 342 transitions, 5821 flow. Second operand 11 states and 200 transitions. [2024-06-27 22:44:59,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 418 transitions, 7433 flow [2024-06-27 22:44:59,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 418 transitions, 7248 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 22:44:59,753 INFO L231 Difference]: Finished difference. Result has 286 places, 343 transitions, 5851 flow [2024-06-27 22:44:59,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5644, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5851, PETRI_PLACES=286, PETRI_TRANSITIONS=343} [2024-06-27 22:44:59,753 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 246 predicate places. [2024-06-27 22:44:59,754 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 343 transitions, 5851 flow [2024-06-27 22:44:59,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:44:59,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:44:59,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:44:59,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:44:59,754 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:44:59,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:44:59,754 INFO L85 PathProgramCache]: Analyzing trace with hash -625772982, now seen corresponding path program 3 times [2024-06-27 22:44:59,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:44:59,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549226530] [2024-06-27 22:44:59,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:44:59,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:44:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:06,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:06,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:06,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549226530] [2024-06-27 22:45:06,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549226530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:06,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:06,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:45:06,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824844965] [2024-06-27 22:45:06,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:06,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:45:06,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:06,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:45:06,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:45:06,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:45:06,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 343 transitions, 5851 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:06,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:06,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:45:06,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:08,280 INFO L124 PetriNetUnfolderBase]: 2028/3707 cut-off events. [2024-06-27 22:45:08,281 INFO L125 PetriNetUnfolderBase]: For 114537/114537 co-relation queries the response was YES. [2024-06-27 22:45:08,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28902 conditions, 3707 events. 2028/3707 cut-off events. For 114537/114537 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 23931 event pairs, 511 based on Foata normal form. 10/3598 useless extension candidates. Maximal degree in co-relation 28767. Up to 2658 conditions per place. [2024-06-27 22:45:08,327 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 312 selfloop transitions, 94 changer transitions 0/411 dead transitions. [2024-06-27 22:45:08,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 411 transitions, 7221 flow [2024-06-27 22:45:08,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:45:08,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:45:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-27 22:45:08,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49242424242424243 [2024-06-27 22:45:08,328 INFO L175 Difference]: Start difference. First operand has 286 places, 343 transitions, 5851 flow. Second operand 11 states and 195 transitions. [2024-06-27 22:45:08,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 411 transitions, 7221 flow [2024-06-27 22:45:08,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 411 transitions, 7083 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 22:45:08,745 INFO L231 Difference]: Finished difference. Result has 291 places, 343 transitions, 5905 flow [2024-06-27 22:45:08,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5713, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5905, PETRI_PLACES=291, PETRI_TRANSITIONS=343} [2024-06-27 22:45:08,746 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 251 predicate places. [2024-06-27 22:45:08,746 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 343 transitions, 5905 flow [2024-06-27 22:45:08,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:08,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:08,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:08,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:45:08,746 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:08,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:08,747 INFO L85 PathProgramCache]: Analyzing trace with hash -557503962, now seen corresponding path program 1 times [2024-06-27 22:45:08,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:08,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530806075] [2024-06-27 22:45:08,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:08,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:18,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:18,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:18,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530806075] [2024-06-27 22:45:18,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530806075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:18,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:18,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:45:18,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943076528] [2024-06-27 22:45:18,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:18,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:45:18,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:18,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:45:18,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:45:18,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:45:18,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 343 transitions, 5905 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:18,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:18,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:45:18,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:19,707 INFO L124 PetriNetUnfolderBase]: 2050/3772 cut-off events. [2024-06-27 22:45:19,708 INFO L125 PetriNetUnfolderBase]: For 110035/110035 co-relation queries the response was YES. [2024-06-27 22:45:19,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29428 conditions, 3772 events. 2050/3772 cut-off events. For 110035/110035 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 24568 event pairs, 502 based on Foata normal form. 2/3646 useless extension candidates. Maximal degree in co-relation 29292. Up to 3094 conditions per place. [2024-06-27 22:45:19,750 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 318 selfloop transitions, 70 changer transitions 0/393 dead transitions. [2024-06-27 22:45:19,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 393 transitions, 6987 flow [2024-06-27 22:45:19,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:45:19,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:45:19,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 22:45:19,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 22:45:19,752 INFO L175 Difference]: Start difference. First operand has 291 places, 343 transitions, 5905 flow. Second operand 10 states and 168 transitions. [2024-06-27 22:45:19,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 393 transitions, 6987 flow [2024-06-27 22:45:20,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 393 transitions, 6834 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 22:45:20,140 INFO L231 Difference]: Finished difference. Result has 293 places, 344 transitions, 5930 flow [2024-06-27 22:45:20,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5752, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5930, PETRI_PLACES=293, PETRI_TRANSITIONS=344} [2024-06-27 22:45:20,141 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 253 predicate places. [2024-06-27 22:45:20,141 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 344 transitions, 5930 flow [2024-06-27 22:45:20,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:20,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:20,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:20,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:45:20,142 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:20,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:20,142 INFO L85 PathProgramCache]: Analyzing trace with hash -557509914, now seen corresponding path program 4 times [2024-06-27 22:45:20,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:20,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748633552] [2024-06-27 22:45:20,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:20,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:30,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:30,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:30,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748633552] [2024-06-27 22:45:30,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748633552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:30,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:30,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:45:30,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410693386] [2024-06-27 22:45:30,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:30,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:45:30,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:30,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:45:30,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:45:30,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:45:30,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 344 transitions, 5930 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:30,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:30,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:45:30,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:32,027 INFO L124 PetriNetUnfolderBase]: 2144/3943 cut-off events. [2024-06-27 22:45:32,027 INFO L125 PetriNetUnfolderBase]: For 125216/125216 co-relation queries the response was YES. [2024-06-27 22:45:32,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30699 conditions, 3943 events. 2144/3943 cut-off events. For 125216/125216 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 25953 event pairs, 554 based on Foata normal form. 10/3826 useless extension candidates. Maximal degree in co-relation 30562. Up to 3046 conditions per place. [2024-06-27 22:45:32,077 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 326 selfloop transitions, 73 changer transitions 0/404 dead transitions. [2024-06-27 22:45:32,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 404 transitions, 7142 flow [2024-06-27 22:45:32,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:45:32,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:45:32,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 22:45:32,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2024-06-27 22:45:32,078 INFO L175 Difference]: Start difference. First operand has 293 places, 344 transitions, 5930 flow. Second operand 11 states and 188 transitions. [2024-06-27 22:45:32,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 404 transitions, 7142 flow [2024-06-27 22:45:32,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 404 transitions, 6978 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 22:45:32,546 INFO L231 Difference]: Finished difference. Result has 296 places, 344 transitions, 5918 flow [2024-06-27 22:45:32,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5766, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5918, PETRI_PLACES=296, PETRI_TRANSITIONS=344} [2024-06-27 22:45:32,547 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 256 predicate places. [2024-06-27 22:45:32,547 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 344 transitions, 5918 flow [2024-06-27 22:45:32,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:32,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:32,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:32,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:45:32,548 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:32,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:32,548 INFO L85 PathProgramCache]: Analyzing trace with hash -557657784, now seen corresponding path program 5 times [2024-06-27 22:45:32,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:32,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988704284] [2024-06-27 22:45:32,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:32,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:41,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:41,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:41,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988704284] [2024-06-27 22:45:41,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988704284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:41,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:41,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:45:41,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652575815] [2024-06-27 22:45:41,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:41,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:45:41,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:41,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:45:41,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:45:41,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:45:41,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 344 transitions, 5918 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:41,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:41,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:45:41,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:43,366 INFO L124 PetriNetUnfolderBase]: 2330/4268 cut-off events. [2024-06-27 22:45:43,366 INFO L125 PetriNetUnfolderBase]: For 146972/146972 co-relation queries the response was YES. [2024-06-27 22:45:43,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33396 conditions, 4268 events. 2330/4268 cut-off events. For 146972/146972 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 28635 event pairs, 560 based on Foata normal form. 8/4156 useless extension candidates. Maximal degree in co-relation 33258. Up to 2944 conditions per place. [2024-06-27 22:45:43,421 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 330 selfloop transitions, 76 changer transitions 0/411 dead transitions. [2024-06-27 22:45:43,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 411 transitions, 7365 flow [2024-06-27 22:45:43,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:45:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:45:43,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-27 22:45:43,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4898989898989899 [2024-06-27 22:45:43,422 INFO L175 Difference]: Start difference. First operand has 296 places, 344 transitions, 5918 flow. Second operand 11 states and 194 transitions. [2024-06-27 22:45:43,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 411 transitions, 7365 flow [2024-06-27 22:45:43,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 411 transitions, 7212 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 22:45:43,920 INFO L231 Difference]: Finished difference. Result has 299 places, 345 transitions, 5937 flow [2024-06-27 22:45:43,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5765, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5937, PETRI_PLACES=299, PETRI_TRANSITIONS=345} [2024-06-27 22:45:43,921 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 259 predicate places. [2024-06-27 22:45:43,921 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 345 transitions, 5937 flow [2024-06-27 22:45:43,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:43,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:43,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:43,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:45:43,922 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:43,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:43,922 INFO L85 PathProgramCache]: Analyzing trace with hash -539081172, now seen corresponding path program 6 times [2024-06-27 22:45:43,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:43,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942320302] [2024-06-27 22:45:43,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:43,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:51,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:51,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:51,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942320302] [2024-06-27 22:45:51,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942320302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:51,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:51,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:45:51,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714488151] [2024-06-27 22:45:51,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:51,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:45:51,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:51,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:45:51,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:45:51,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:45:51,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 345 transitions, 5937 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:51,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:51,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:45:51,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:45:53,520 INFO L124 PetriNetUnfolderBase]: 2317/4305 cut-off events. [2024-06-27 22:45:53,521 INFO L125 PetriNetUnfolderBase]: For 139650/139650 co-relation queries the response was YES. [2024-06-27 22:45:53,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32944 conditions, 4305 events. 2317/4305 cut-off events. For 139650/139650 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29211 event pairs, 633 based on Foata normal form. 10/4175 useless extension candidates. Maximal degree in co-relation 32804. Up to 3283 conditions per place. [2024-06-27 22:45:53,573 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 320 selfloop transitions, 85 changer transitions 0/410 dead transitions. [2024-06-27 22:45:53,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 410 transitions, 7305 flow [2024-06-27 22:45:53,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:45:53,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:45:53,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 22:45:53,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-27 22:45:53,575 INFO L175 Difference]: Start difference. First operand has 299 places, 345 transitions, 5937 flow. Second operand 10 states and 185 transitions. [2024-06-27 22:45:53,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 410 transitions, 7305 flow [2024-06-27 22:45:54,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 410 transitions, 7162 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 22:45:54,026 INFO L231 Difference]: Finished difference. Result has 302 places, 348 transitions, 6095 flow [2024-06-27 22:45:54,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5794, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6095, PETRI_PLACES=302, PETRI_TRANSITIONS=348} [2024-06-27 22:45:54,026 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 262 predicate places. [2024-06-27 22:45:54,027 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 348 transitions, 6095 flow [2024-06-27 22:45:54,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:54,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:54,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:45:54,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:45:54,027 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:45:54,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:54,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1272880798, now seen corresponding path program 2 times [2024-06-27 22:45:54,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:54,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769088090] [2024-06-27 22:45:54,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:54,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:59,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:59,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:59,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769088090] [2024-06-27 22:45:59,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769088090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:59,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:59,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:45:59,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421296371] [2024-06-27 22:45:59,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:59,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:45:59,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:59,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:45:59,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:45:59,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:45:59,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 348 transitions, 6095 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:45:59,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:59,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:45:59,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:01,746 INFO L124 PetriNetUnfolderBase]: 2344/4393 cut-off events. [2024-06-27 22:46:01,746 INFO L125 PetriNetUnfolderBase]: For 137636/137636 co-relation queries the response was YES. [2024-06-27 22:46:01,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33820 conditions, 4393 events. 2344/4393 cut-off events. For 137636/137636 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 30144 event pairs, 687 based on Foata normal form. 2/4241 useless extension candidates. Maximal degree in co-relation 33678. Up to 3650 conditions per place. [2024-06-27 22:46:01,805 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 331 selfloop transitions, 66 changer transitions 0/402 dead transitions. [2024-06-27 22:46:01,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 402 transitions, 7187 flow [2024-06-27 22:46:01,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:46:01,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:46:01,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 22:46:01,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 22:46:01,807 INFO L175 Difference]: Start difference. First operand has 302 places, 348 transitions, 6095 flow. Second operand 11 states and 180 transitions. [2024-06-27 22:46:01,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 402 transitions, 7187 flow [2024-06-27 22:46:02,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 402 transitions, 7044 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 22:46:02,278 INFO L231 Difference]: Finished difference. Result has 307 places, 352 transitions, 6226 flow [2024-06-27 22:46:02,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5952, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6226, PETRI_PLACES=307, PETRI_TRANSITIONS=352} [2024-06-27 22:46:02,279 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 267 predicate places. [2024-06-27 22:46:02,279 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 352 transitions, 6226 flow [2024-06-27 22:46:02,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:02,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:02,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:02,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:46:02,280 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:02,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:02,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1668951614, now seen corresponding path program 7 times [2024-06-27 22:46:02,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:02,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384720982] [2024-06-27 22:46:02,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:02,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:08,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:08,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384720982] [2024-06-27 22:46:08,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384720982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:08,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:08,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:46:08,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395766671] [2024-06-27 22:46:08,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:08,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:46:08,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:08,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:46:08,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:46:08,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:46:08,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 352 transitions, 6226 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:08,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:08,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:46:08,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:10,063 INFO L124 PetriNetUnfolderBase]: 2475/4666 cut-off events. [2024-06-27 22:46:10,063 INFO L125 PetriNetUnfolderBase]: For 165075/165075 co-relation queries the response was YES. [2024-06-27 22:46:10,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36159 conditions, 4666 events. 2475/4666 cut-off events. For 165075/165075 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 32508 event pairs, 788 based on Foata normal form. 11/4509 useless extension candidates. Maximal degree in co-relation 36015. Up to 3634 conditions per place. [2024-06-27 22:46:10,123 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 328 selfloop transitions, 74 changer transitions 0/407 dead transitions. [2024-06-27 22:46:10,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 407 transitions, 7658 flow [2024-06-27 22:46:10,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:46:10,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:46:10,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:46:10,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030864197530864 [2024-06-27 22:46:10,125 INFO L175 Difference]: Start difference. First operand has 307 places, 352 transitions, 6226 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:46:10,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 407 transitions, 7658 flow [2024-06-27 22:46:10,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 407 transitions, 7472 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-27 22:46:10,629 INFO L231 Difference]: Finished difference. Result has 310 places, 356 transitions, 6360 flow [2024-06-27 22:46:10,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6040, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6360, PETRI_PLACES=310, PETRI_TRANSITIONS=356} [2024-06-27 22:46:10,629 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 270 predicate places. [2024-06-27 22:46:10,629 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 356 transitions, 6360 flow [2024-06-27 22:46:10,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:10,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:10,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:10,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:46:10,630 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:10,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:10,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1260025918, now seen corresponding path program 8 times [2024-06-27 22:46:10,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:10,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119273423] [2024-06-27 22:46:10,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:10,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:16,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:16,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:16,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119273423] [2024-06-27 22:46:16,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119273423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:16,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:16,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:46:16,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536060018] [2024-06-27 22:46:16,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:16,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:46:16,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:16,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:46:16,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:46:16,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:46:16,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 356 transitions, 6360 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:16,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:16,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:46:16,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:19,049 INFO L124 PetriNetUnfolderBase]: 2864/5413 cut-off events. [2024-06-27 22:46:19,049 INFO L125 PetriNetUnfolderBase]: For 214665/214665 co-relation queries the response was YES. [2024-06-27 22:46:19,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42544 conditions, 5413 events. 2864/5413 cut-off events. For 214665/214665 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 39157 event pairs, 842 based on Foata normal form. 8/5240 useless extension candidates. Maximal degree in co-relation 42397. Up to 3457 conditions per place. [2024-06-27 22:46:19,116 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 353 selfloop transitions, 86 changer transitions 0/444 dead transitions. [2024-06-27 22:46:19,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 444 transitions, 8537 flow [2024-06-27 22:46:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:46:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:46:19,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 22:46:19,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216049382716049 [2024-06-27 22:46:19,118 INFO L175 Difference]: Start difference. First operand has 310 places, 356 transitions, 6360 flow. Second operand 9 states and 169 transitions. [2024-06-27 22:46:19,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 444 transitions, 8537 flow [2024-06-27 22:46:19,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 444 transitions, 8362 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 22:46:19,788 INFO L231 Difference]: Finished difference. Result has 318 places, 378 transitions, 7036 flow [2024-06-27 22:46:19,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6185, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7036, PETRI_PLACES=318, PETRI_TRANSITIONS=378} [2024-06-27 22:46:19,789 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 278 predicate places. [2024-06-27 22:46:19,789 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 378 transitions, 7036 flow [2024-06-27 22:46:19,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:19,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:19,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:19,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:46:19,790 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:19,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:19,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1273088405, now seen corresponding path program 1 times [2024-06-27 22:46:19,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:19,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965771494] [2024-06-27 22:46:19,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:19,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:26,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:26,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:26,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965771494] [2024-06-27 22:46:26,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965771494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:26,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:26,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:46:26,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746190674] [2024-06-27 22:46:26,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:26,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:46:26,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:26,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:46:26,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:46:26,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:46:26,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 378 transitions, 7036 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:26,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:26,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:46:26,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:28,307 INFO L124 PetriNetUnfolderBase]: 2927/5549 cut-off events. [2024-06-27 22:46:28,308 INFO L125 PetriNetUnfolderBase]: For 231222/231228 co-relation queries the response was YES. [2024-06-27 22:46:28,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45071 conditions, 5549 events. 2927/5549 cut-off events. For 231222/231228 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 40442 event pairs, 1029 based on Foata normal form. 7/5364 useless extension candidates. Maximal degree in co-relation 44919. Up to 4672 conditions per place. [2024-06-27 22:46:28,382 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 346 selfloop transitions, 73 changer transitions 0/424 dead transitions. [2024-06-27 22:46:28,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 424 transitions, 8449 flow [2024-06-27 22:46:28,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:46:28,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:46:28,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-27 22:46:28,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-27 22:46:28,383 INFO L175 Difference]: Start difference. First operand has 318 places, 378 transitions, 7036 flow. Second operand 7 states and 133 transitions. [2024-06-27 22:46:28,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 424 transitions, 8449 flow [2024-06-27 22:46:29,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 424 transitions, 8278 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-27 22:46:29,272 INFO L231 Difference]: Finished difference. Result has 323 places, 389 transitions, 7393 flow [2024-06-27 22:46:29,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6866, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7393, PETRI_PLACES=323, PETRI_TRANSITIONS=389} [2024-06-27 22:46:29,273 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 283 predicate places. [2024-06-27 22:46:29,273 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 389 transitions, 7393 flow [2024-06-27 22:46:29,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:29,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:29,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:29,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 22:46:29,274 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:29,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:29,274 INFO L85 PathProgramCache]: Analyzing trace with hash 128618995, now seen corresponding path program 2 times [2024-06-27 22:46:29,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:29,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787270159] [2024-06-27 22:46:29,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:29,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:35,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:35,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:35,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787270159] [2024-06-27 22:46:35,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787270159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:35,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:35,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:46:35,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561215822] [2024-06-27 22:46:35,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:35,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:46:35,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:35,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:46:35,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:46:35,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:46:35,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 389 transitions, 7393 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:35,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:35,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:46:35,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:38,470 INFO L124 PetriNetUnfolderBase]: 2972/5652 cut-off events. [2024-06-27 22:46:38,470 INFO L125 PetriNetUnfolderBase]: For 244800/244800 co-relation queries the response was YES. [2024-06-27 22:46:38,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46686 conditions, 5652 events. 2972/5652 cut-off events. For 244800/244800 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 41359 event pairs, 936 based on Foata normal form. 1/5450 useless extension candidates. Maximal degree in co-relation 46533. Up to 4549 conditions per place. [2024-06-27 22:46:38,549 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 344 selfloop transitions, 100 changer transitions 0/449 dead transitions. [2024-06-27 22:46:38,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 449 transitions, 8895 flow [2024-06-27 22:46:38,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:46:38,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:46:38,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 22:46:38,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-27 22:46:38,550 INFO L175 Difference]: Start difference. First operand has 323 places, 389 transitions, 7393 flow. Second operand 10 states and 171 transitions. [2024-06-27 22:46:38,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 449 transitions, 8895 flow [2024-06-27 22:46:39,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 449 transitions, 8748 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-27 22:46:39,540 INFO L231 Difference]: Finished difference. Result has 330 places, 397 transitions, 7792 flow [2024-06-27 22:46:39,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7246, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7792, PETRI_PLACES=330, PETRI_TRANSITIONS=397} [2024-06-27 22:46:39,540 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 290 predicate places. [2024-06-27 22:46:39,540 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 397 transitions, 7792 flow [2024-06-27 22:46:39,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:39,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:39,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:39,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 22:46:39,541 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:39,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:39,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1835699856, now seen corresponding path program 3 times [2024-06-27 22:46:39,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:39,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553036882] [2024-06-27 22:46:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:39,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:45,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:45,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:45,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553036882] [2024-06-27 22:46:45,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553036882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:45,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:45,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:46:45,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276655535] [2024-06-27 22:46:45,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:45,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:46:45,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:45,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:46:45,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:46:45,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:46:45,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 397 transitions, 7792 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:45,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:45,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:46:45,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:47,309 INFO L124 PetriNetUnfolderBase]: 3001/5667 cut-off events. [2024-06-27 22:46:47,310 INFO L125 PetriNetUnfolderBase]: For 256489/256489 co-relation queries the response was YES. [2024-06-27 22:46:47,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47763 conditions, 5667 events. 3001/5667 cut-off events. For 256489/256489 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 41337 event pairs, 982 based on Foata normal form. 2/5478 useless extension candidates. Maximal degree in co-relation 47607. Up to 4851 conditions per place. [2024-06-27 22:46:47,391 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 389 selfloop transitions, 62 changer transitions 0/456 dead transitions. [2024-06-27 22:46:47,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 456 transitions, 8954 flow [2024-06-27 22:46:47,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:46:47,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:46:47,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 22:46:47,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 22:46:47,392 INFO L175 Difference]: Start difference. First operand has 330 places, 397 transitions, 7792 flow. Second operand 11 states and 187 transitions. [2024-06-27 22:46:47,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 456 transitions, 8954 flow [2024-06-27 22:46:48,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 456 transitions, 8665 flow, removed 85 selfloop flow, removed 9 redundant places. [2024-06-27 22:46:48,523 INFO L231 Difference]: Finished difference. Result has 333 places, 401 transitions, 7758 flow [2024-06-27 22:46:48,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7503, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7758, PETRI_PLACES=333, PETRI_TRANSITIONS=401} [2024-06-27 22:46:48,524 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 293 predicate places. [2024-06-27 22:46:48,524 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 401 transitions, 7758 flow [2024-06-27 22:46:48,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:48,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:48,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:48,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 22:46:48,525 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:48,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:48,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1259877893, now seen corresponding path program 3 times [2024-06-27 22:46:48,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:48,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553504130] [2024-06-27 22:46:48,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:48,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:54,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:54,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553504130] [2024-06-27 22:46:54,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553504130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:54,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:54,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:46:54,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004154706] [2024-06-27 22:46:54,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:54,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:46:54,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:54,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:46:54,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:46:54,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:46:54,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 401 transitions, 7758 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:54,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:54,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:46:54,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:56,796 INFO L124 PetriNetUnfolderBase]: 3004/5660 cut-off events. [2024-06-27 22:46:56,796 INFO L125 PetriNetUnfolderBase]: For 254775/254775 co-relation queries the response was YES. [2024-06-27 22:46:56,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47614 conditions, 5660 events. 3004/5660 cut-off events. For 254775/254775 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 41202 event pairs, 984 based on Foata normal form. 1/5474 useless extension candidates. Maximal degree in co-relation 47459. Up to 4569 conditions per place. [2024-06-27 22:46:56,877 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 307 selfloop transitions, 134 changer transitions 0/446 dead transitions. [2024-06-27 22:46:56,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 446 transitions, 9044 flow [2024-06-27 22:46:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:46:56,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:46:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-27 22:46:56,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-27 22:46:56,878 INFO L175 Difference]: Start difference. First operand has 333 places, 401 transitions, 7758 flow. Second operand 8 states and 148 transitions. [2024-06-27 22:46:56,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 446 transitions, 9044 flow [2024-06-27 22:46:58,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 446 transitions, 8843 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-27 22:46:58,042 INFO L231 Difference]: Finished difference. Result has 334 places, 404 transitions, 8037 flow [2024-06-27 22:46:58,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7557, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8037, PETRI_PLACES=334, PETRI_TRANSITIONS=404} [2024-06-27 22:46:58,043 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 294 predicate places. [2024-06-27 22:46:58,043 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 404 transitions, 8037 flow [2024-06-27 22:46:58,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:58,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:58,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:58,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 22:46:58,043 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:46:58,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:58,044 INFO L85 PathProgramCache]: Analyzing trace with hash 500307150, now seen corresponding path program 9 times [2024-06-27 22:46:58,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:58,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411633573] [2024-06-27 22:46:58,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:58,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:04,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:04,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:04,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411633573] [2024-06-27 22:47:04,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411633573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:04,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:04,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:47:04,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074410442] [2024-06-27 22:47:04,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:04,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:47:04,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:04,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:47:04,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:47:04,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:47:04,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 404 transitions, 8037 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:04,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:04,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:47:04,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:07,370 INFO L124 PetriNetUnfolderBase]: 3266/6174 cut-off events. [2024-06-27 22:47:07,371 INFO L125 PetriNetUnfolderBase]: For 315320/315320 co-relation queries the response was YES. [2024-06-27 22:47:07,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52487 conditions, 6174 events. 3266/6174 cut-off events. For 315320/315320 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 46110 event pairs, 1028 based on Foata normal form. 18/5992 useless extension candidates. Maximal degree in co-relation 52330. Up to 4839 conditions per place. [2024-06-27 22:47:07,446 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 400 selfloop transitions, 71 changer transitions 0/476 dead transitions. [2024-06-27 22:47:07,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 476 transitions, 9596 flow [2024-06-27 22:47:07,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:47:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:47:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 200 transitions. [2024-06-27 22:47:07,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-27 22:47:07,448 INFO L175 Difference]: Start difference. First operand has 334 places, 404 transitions, 8037 flow. Second operand 12 states and 200 transitions. [2024-06-27 22:47:07,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 476 transitions, 9596 flow [2024-06-27 22:47:08,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 476 transitions, 9514 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 22:47:08,495 INFO L231 Difference]: Finished difference. Result has 344 places, 412 transitions, 8314 flow [2024-06-27 22:47:08,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7955, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8314, PETRI_PLACES=344, PETRI_TRANSITIONS=412} [2024-06-27 22:47:08,496 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 304 predicate places. [2024-06-27 22:47:08,496 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 412 transitions, 8314 flow [2024-06-27 22:47:08,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:08,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:08,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:08,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 22:47:08,496 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:08,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:08,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1259872313, now seen corresponding path program 4 times [2024-06-27 22:47:08,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:08,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465515884] [2024-06-27 22:47:08,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:08,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:14,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:14,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:14,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465515884] [2024-06-27 22:47:14,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465515884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:14,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:14,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:47:14,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454042014] [2024-06-27 22:47:14,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:14,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:47:14,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:14,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:47:14,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:47:14,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:47:14,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 412 transitions, 8314 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:14,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:14,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:47:14,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:16,909 INFO L124 PetriNetUnfolderBase]: 3294/6273 cut-off events. [2024-06-27 22:47:16,909 INFO L125 PetriNetUnfolderBase]: For 289404/289404 co-relation queries the response was YES. [2024-06-27 22:47:16,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53332 conditions, 6273 events. 3294/6273 cut-off events. For 289404/289404 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 47263 event pairs, 1157 based on Foata normal form. 1/6056 useless extension candidates. Maximal degree in co-relation 53171. Up to 5270 conditions per place. [2024-06-27 22:47:17,006 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 377 selfloop transitions, 89 changer transitions 0/471 dead transitions. [2024-06-27 22:47:17,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 471 transitions, 9913 flow [2024-06-27 22:47:17,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:47:17,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:47:17,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 22:47:17,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-27 22:47:17,007 INFO L175 Difference]: Start difference. First operand has 344 places, 412 transitions, 8314 flow. Second operand 8 states and 146 transitions. [2024-06-27 22:47:17,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 471 transitions, 9913 flow [2024-06-27 22:47:18,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 471 transitions, 9680 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-27 22:47:18,431 INFO L231 Difference]: Finished difference. Result has 345 places, 428 transitions, 8813 flow [2024-06-27 22:47:18,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8127, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8813, PETRI_PLACES=345, PETRI_TRANSITIONS=428} [2024-06-27 22:47:18,431 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 305 predicate places. [2024-06-27 22:47:18,432 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 428 transitions, 8813 flow [2024-06-27 22:47:18,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:18,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:18,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:18,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 22:47:18,432 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:18,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:18,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1830122274, now seen corresponding path program 10 times [2024-06-27 22:47:18,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:18,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468392968] [2024-06-27 22:47:18,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:18,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:24,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:24,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:24,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468392968] [2024-06-27 22:47:24,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468392968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:24,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:24,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:47:24,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264374452] [2024-06-27 22:47:24,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:24,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:47:24,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:24,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:47:24,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:47:24,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:47:24,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 428 transitions, 8813 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:24,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:24,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:47:24,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:27,282 INFO L124 PetriNetUnfolderBase]: 3588/6869 cut-off events. [2024-06-27 22:47:27,282 INFO L125 PetriNetUnfolderBase]: For 355615/355615 co-relation queries the response was YES. [2024-06-27 22:47:27,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58960 conditions, 6869 events. 3588/6869 cut-off events. For 355615/355615 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 52983 event pairs, 1254 based on Foata normal form. 18/6641 useless extension candidates. Maximal degree in co-relation 58796. Up to 5412 conditions per place. [2024-06-27 22:47:27,379 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 436 selfloop transitions, 94 changer transitions 0/535 dead transitions. [2024-06-27 22:47:27,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 535 transitions, 11172 flow [2024-06-27 22:47:27,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-27 22:47:27,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-27 22:47:27,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 252 transitions. [2024-06-27 22:47:27,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 22:47:27,381 INFO L175 Difference]: Start difference. First operand has 345 places, 428 transitions, 8813 flow. Second operand 16 states and 252 transitions. [2024-06-27 22:47:27,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 535 transitions, 11172 flow [2024-06-27 22:47:28,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 535 transitions, 10753 flow, removed 164 selfloop flow, removed 3 redundant places. [2024-06-27 22:47:28,822 INFO L231 Difference]: Finished difference. Result has 363 places, 457 transitions, 9495 flow [2024-06-27 22:47:28,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8561, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9495, PETRI_PLACES=363, PETRI_TRANSITIONS=457} [2024-06-27 22:47:28,823 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 323 predicate places. [2024-06-27 22:47:28,823 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 457 transitions, 9495 flow [2024-06-27 22:47:28,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:28,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:28,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:28,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 22:47:28,823 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:28,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:28,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1259872096, now seen corresponding path program 4 times [2024-06-27 22:47:28,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:28,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597737289] [2024-06-27 22:47:28,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:28,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:35,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:35,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:35,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597737289] [2024-06-27 22:47:35,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597737289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:35,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:35,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:47:35,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662212264] [2024-06-27 22:47:35,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:35,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:47:35,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:35,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:47:35,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:47:35,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:47:35,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 457 transitions, 9495 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:35,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:35,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:47:35,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:38,074 INFO L124 PetriNetUnfolderBase]: 3610/6859 cut-off events. [2024-06-27 22:47:38,074 INFO L125 PetriNetUnfolderBase]: For 336225/336225 co-relation queries the response was YES. [2024-06-27 22:47:38,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59646 conditions, 6859 events. 3610/6859 cut-off events. For 336225/336225 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 52539 event pairs, 1302 based on Foata normal form. 2/6631 useless extension candidates. Maximal degree in co-relation 59476. Up to 5962 conditions per place. [2024-06-27 22:47:38,181 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 451 selfloop transitions, 57 changer transitions 0/513 dead transitions. [2024-06-27 22:47:38,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 513 transitions, 10826 flow [2024-06-27 22:47:38,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 22:47:38,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 22:47:38,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 213 transitions. [2024-06-27 22:47:38,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2024-06-27 22:47:38,183 INFO L175 Difference]: Start difference. First operand has 363 places, 457 transitions, 9495 flow. Second operand 14 states and 213 transitions. [2024-06-27 22:47:38,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 513 transitions, 10826 flow [2024-06-27 22:47:39,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 513 transitions, 10660 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-06-27 22:47:39,589 INFO L231 Difference]: Finished difference. Result has 366 places, 458 transitions, 9494 flow [2024-06-27 22:47:39,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9329, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9494, PETRI_PLACES=366, PETRI_TRANSITIONS=458} [2024-06-27 22:47:39,590 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 326 predicate places. [2024-06-27 22:47:39,590 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 458 transitions, 9494 flow [2024-06-27 22:47:39,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:39,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:39,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:39,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 22:47:39,591 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:39,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:39,591 INFO L85 PathProgramCache]: Analyzing trace with hash 470187966, now seen corresponding path program 5 times [2024-06-27 22:47:39,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:39,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763912868] [2024-06-27 22:47:39,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:39,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:45,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:45,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763912868] [2024-06-27 22:47:45,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763912868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:45,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:45,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:47:45,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971291634] [2024-06-27 22:47:45,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:45,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:47:45,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:45,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:47:45,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:47:45,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:47:45,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 458 transitions, 9494 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:45,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:45,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:47:45,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:48,450 INFO L124 PetriNetUnfolderBase]: 3647/6928 cut-off events. [2024-06-27 22:47:48,450 INFO L125 PetriNetUnfolderBase]: For 345800/345806 co-relation queries the response was YES. [2024-06-27 22:47:48,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60481 conditions, 6928 events. 3647/6928 cut-off events. For 345800/345806 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 53124 event pairs, 1247 based on Foata normal form. 8/6704 useless extension candidates. Maximal degree in co-relation 60311. Up to 5971 conditions per place. [2024-06-27 22:47:48,556 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 437 selfloop transitions, 64 changer transitions 0/506 dead transitions. [2024-06-27 22:47:48,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 506 transitions, 10934 flow [2024-06-27 22:47:48,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:47:48,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:47:48,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 22:47:48,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 22:47:48,558 INFO L175 Difference]: Start difference. First operand has 366 places, 458 transitions, 9494 flow. Second operand 10 states and 160 transitions. [2024-06-27 22:47:48,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 506 transitions, 10934 flow [2024-06-27 22:47:50,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 506 transitions, 10825 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 22:47:50,106 INFO L231 Difference]: Finished difference. Result has 369 places, 463 transitions, 9727 flow [2024-06-27 22:47:50,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9385, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9727, PETRI_PLACES=369, PETRI_TRANSITIONS=463} [2024-06-27 22:47:50,107 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 329 predicate places. [2024-06-27 22:47:50,107 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 463 transitions, 9727 flow [2024-06-27 22:47:50,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:50,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:50,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:50,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 22:47:50,107 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:47:50,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:50,108 INFO L85 PathProgramCache]: Analyzing trace with hash 2088539792, now seen corresponding path program 11 times [2024-06-27 22:47:50,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:50,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548162727] [2024-06-27 22:47:50,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:50,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:56,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:56,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548162727] [2024-06-27 22:47:56,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548162727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:56,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:56,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:47:56,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672545110] [2024-06-27 22:47:56,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:56,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:47:56,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:56,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:47:56,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:47:56,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:47:56,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 463 transitions, 9727 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:56,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:56,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:47:56,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:58,940 INFO L124 PetriNetUnfolderBase]: 3782/7199 cut-off events. [2024-06-27 22:47:58,940 INFO L125 PetriNetUnfolderBase]: For 378250/378256 co-relation queries the response was YES. [2024-06-27 22:47:59,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62836 conditions, 7199 events. 3782/7199 cut-off events. For 378250/378256 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 55860 event pairs, 1226 based on Foata normal form. 14/6978 useless extension candidates. Maximal degree in co-relation 62664. Up to 5584 conditions per place. [2024-06-27 22:47:59,055 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 449 selfloop transitions, 79 changer transitions 0/533 dead transitions. [2024-06-27 22:47:59,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 533 transitions, 11691 flow [2024-06-27 22:47:59,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:47:59,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:47:59,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 22:47:59,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-06-27 22:47:59,057 INFO L175 Difference]: Start difference. First operand has 369 places, 463 transitions, 9727 flow. Second operand 11 states and 192 transitions. [2024-06-27 22:47:59,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 533 transitions, 11691 flow [2024-06-27 22:48:00,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 533 transitions, 11525 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-27 22:48:00,838 INFO L231 Difference]: Finished difference. Result has 377 places, 466 transitions, 9843 flow [2024-06-27 22:48:00,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9561, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9843, PETRI_PLACES=377, PETRI_TRANSITIONS=466} [2024-06-27 22:48:00,839 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 337 predicate places. [2024-06-27 22:48:00,839 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 466 transitions, 9843 flow [2024-06-27 22:48:00,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:00,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:00,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:00,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 22:48:00,839 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:00,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:00,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1455839022, now seen corresponding path program 6 times [2024-06-27 22:48:00,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:00,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160480907] [2024-06-27 22:48:00,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:00,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:07,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:07,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160480907] [2024-06-27 22:48:07,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160480907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:07,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:07,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:48:07,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191149021] [2024-06-27 22:48:07,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:07,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:48:07,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:07,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:48:07,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:48:07,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:48:07,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 466 transitions, 9843 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:07,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:07,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:48:07,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:10,768 INFO L124 PetriNetUnfolderBase]: 3804/7279 cut-off events. [2024-06-27 22:48:10,769 INFO L125 PetriNetUnfolderBase]: For 372274/372280 co-relation queries the response was YES. [2024-06-27 22:48:10,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63477 conditions, 7279 events. 3804/7279 cut-off events. For 372274/372280 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 56839 event pairs, 1336 based on Foata normal form. 8/7038 useless extension candidates. Maximal degree in co-relation 63301. Up to 6154 conditions per place. [2024-06-27 22:48:10,869 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 427 selfloop transitions, 81 changer transitions 0/513 dead transitions. [2024-06-27 22:48:10,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 513 transitions, 11278 flow [2024-06-27 22:48:10,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:48:10,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:48:10,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 22:48:10,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 22:48:10,870 INFO L175 Difference]: Start difference. First operand has 377 places, 466 transitions, 9843 flow. Second operand 10 states and 162 transitions. [2024-06-27 22:48:10,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 513 transitions, 11278 flow [2024-06-27 22:48:12,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 513 transitions, 11176 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 22:48:12,405 INFO L231 Difference]: Finished difference. Result has 382 places, 468 transitions, 10014 flow [2024-06-27 22:48:12,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9741, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10014, PETRI_PLACES=382, PETRI_TRANSITIONS=468} [2024-06-27 22:48:12,405 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 342 predicate places. [2024-06-27 22:48:12,405 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 468 transitions, 10014 flow [2024-06-27 22:48:12,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:12,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:12,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:12,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 22:48:12,406 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:12,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:12,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1521363959, now seen corresponding path program 5 times [2024-06-27 22:48:12,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:12,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449904316] [2024-06-27 22:48:12,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:12,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:18,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:18,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:18,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449904316] [2024-06-27 22:48:18,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449904316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:18,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:18,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:48:18,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485169396] [2024-06-27 22:48:18,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:18,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:48:18,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:18,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:48:18,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:48:18,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:48:18,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 468 transitions, 10014 flow. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:18,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:18,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:48:18,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:21,881 INFO L124 PetriNetUnfolderBase]: 3883/7419 cut-off events. [2024-06-27 22:48:21,882 INFO L125 PetriNetUnfolderBase]: For 385951/385957 co-relation queries the response was YES. [2024-06-27 22:48:21,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65260 conditions, 7419 events. 3883/7419 cut-off events. For 385951/385957 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 58148 event pairs, 1413 based on Foata normal form. 7/7172 useless extension candidates. Maximal degree in co-relation 65083. Up to 6282 conditions per place. [2024-06-27 22:48:21,994 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 445 selfloop transitions, 97 changer transitions 0/547 dead transitions. [2024-06-27 22:48:21,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 547 transitions, 12197 flow [2024-06-27 22:48:21,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:48:21,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:48:22,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 202 transitions. [2024-06-27 22:48:22,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43162393162393164 [2024-06-27 22:48:22,012 INFO L175 Difference]: Start difference. First operand has 382 places, 468 transitions, 10014 flow. Second operand 13 states and 202 transitions. [2024-06-27 22:48:22,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 547 transitions, 12197 flow [2024-06-27 22:48:23,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 547 transitions, 11908 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-27 22:48:23,753 INFO L231 Difference]: Finished difference. Result has 392 places, 495 transitions, 10682 flow [2024-06-27 22:48:23,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9761, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10682, PETRI_PLACES=392, PETRI_TRANSITIONS=495} [2024-06-27 22:48:23,754 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 352 predicate places. [2024-06-27 22:48:23,754 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 495 transitions, 10682 flow [2024-06-27 22:48:23,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:23,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:23,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:23,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 22:48:23,755 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:23,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:23,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2088543512, now seen corresponding path program 12 times [2024-06-27 22:48:23,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:23,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334633809] [2024-06-27 22:48:23,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:23,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:29,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:29,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:29,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334633809] [2024-06-27 22:48:29,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334633809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:29,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:29,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:48:29,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940846962] [2024-06-27 22:48:29,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:29,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:48:29,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:29,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:48:29,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:48:29,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:48:29,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 495 transitions, 10682 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:29,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:29,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:48:29,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:33,024 INFO L124 PetriNetUnfolderBase]: 3937/7348 cut-off events. [2024-06-27 22:48:33,024 INFO L125 PetriNetUnfolderBase]: For 412281/412287 co-relation queries the response was YES. [2024-06-27 22:48:33,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67450 conditions, 7348 events. 3937/7348 cut-off events. For 412281/412287 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 56771 event pairs, 1430 based on Foata normal form. 8/7156 useless extension candidates. Maximal degree in co-relation 67267. Up to 6483 conditions per place. [2024-06-27 22:48:33,148 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 489 selfloop transitions, 69 changer transitions 0/563 dead transitions. [2024-06-27 22:48:33,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 563 transitions, 12469 flow [2024-06-27 22:48:33,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:48:33,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:48:33,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:48:33,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-27 22:48:33,150 INFO L175 Difference]: Start difference. First operand has 392 places, 495 transitions, 10682 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:48:33,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 563 transitions, 12469 flow [2024-06-27 22:48:35,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 563 transitions, 12188 flow, removed 116 selfloop flow, removed 5 redundant places. [2024-06-27 22:48:35,208 INFO L231 Difference]: Finished difference. Result has 402 places, 510 transitions, 10976 flow [2024-06-27 22:48:35,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10401, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10976, PETRI_PLACES=402, PETRI_TRANSITIONS=510} [2024-06-27 22:48:35,209 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 362 predicate places. [2024-06-27 22:48:35,209 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 510 transitions, 10976 flow [2024-06-27 22:48:35,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:35,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:35,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:35,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 22:48:35,210 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:35,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:35,210 INFO L85 PathProgramCache]: Analyzing trace with hash 2094265244, now seen corresponding path program 7 times [2024-06-27 22:48:35,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:35,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47942428] [2024-06-27 22:48:35,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:35,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:41,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:41,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:41,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47942428] [2024-06-27 22:48:41,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47942428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:41,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:41,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:48:41,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783018741] [2024-06-27 22:48:41,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:41,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:48:41,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:41,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:48:41,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:48:41,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:48:41,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 510 transitions, 10976 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:41,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:41,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:48:41,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:44,700 INFO L124 PetriNetUnfolderBase]: 3973/7577 cut-off events. [2024-06-27 22:48:44,701 INFO L125 PetriNetUnfolderBase]: For 419128/419134 co-relation queries the response was YES. [2024-06-27 22:48:44,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68714 conditions, 7577 events. 3973/7577 cut-off events. For 419128/419134 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 59458 event pairs, 1405 based on Foata normal form. 8/7330 useless extension candidates. Maximal degree in co-relation 68525. Up to 6573 conditions per place. [2024-06-27 22:48:44,832 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 497 selfloop transitions, 57 changer transitions 0/559 dead transitions. [2024-06-27 22:48:44,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 559 transitions, 12503 flow [2024-06-27 22:48:44,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:48:44,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:48:44,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 22:48:44,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-27 22:48:44,833 INFO L175 Difference]: Start difference. First operand has 402 places, 510 transitions, 10976 flow. Second operand 10 states and 159 transitions. [2024-06-27 22:48:44,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 559 transitions, 12503 flow [2024-06-27 22:48:47,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 559 transitions, 12388 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 22:48:47,319 INFO L231 Difference]: Finished difference. Result has 407 places, 514 transitions, 11153 flow [2024-06-27 22:48:47,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10861, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11153, PETRI_PLACES=407, PETRI_TRANSITIONS=514} [2024-06-27 22:48:47,320 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 367 predicate places. [2024-06-27 22:48:47,320 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 514 transitions, 11153 flow [2024-06-27 22:48:47,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:47,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:47,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:47,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 22:48:47,320 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:47,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:47,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1455631260, now seen corresponding path program 13 times [2024-06-27 22:48:47,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:47,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642687951] [2024-06-27 22:48:47,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:47,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:54,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:54,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:54,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642687951] [2024-06-27 22:48:54,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642687951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:54,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:54,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:48:54,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711041297] [2024-06-27 22:48:54,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:54,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:48:54,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:54,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:48:54,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:48:54,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:48:54,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 514 transitions, 11153 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:54,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:54,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:48:54,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:57,144 INFO L124 PetriNetUnfolderBase]: 4069/7575 cut-off events. [2024-06-27 22:48:57,144 INFO L125 PetriNetUnfolderBase]: For 448726/448732 co-relation queries the response was YES. [2024-06-27 22:48:57,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70021 conditions, 7575 events. 4069/7575 cut-off events. For 448726/448732 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 58719 event pairs, 1518 based on Foata normal form. 16/7395 useless extension candidates. Maximal degree in co-relation 69829. Up to 6628 conditions per place. [2024-06-27 22:48:57,278 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 503 selfloop transitions, 51 changer transitions 0/559 dead transitions. [2024-06-27 22:48:57,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 559 transitions, 12697 flow [2024-06-27 22:48:57,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:48:57,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:48:57,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 22:48:57,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 22:48:57,279 INFO L175 Difference]: Start difference. First operand has 407 places, 514 transitions, 11153 flow. Second operand 10 states and 162 transitions. [2024-06-27 22:48:57,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 559 transitions, 12697 flow [2024-06-27 22:48:59,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 559 transitions, 12487 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-27 22:48:59,728 INFO L231 Difference]: Finished difference. Result has 411 places, 516 transitions, 11080 flow [2024-06-27 22:48:59,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10943, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11080, PETRI_PLACES=411, PETRI_TRANSITIONS=516} [2024-06-27 22:48:59,728 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 371 predicate places. [2024-06-27 22:48:59,729 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 516 transitions, 11080 flow [2024-06-27 22:48:59,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:59,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:59,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:59,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 22:48:59,729 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:48:59,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:59,730 INFO L85 PathProgramCache]: Analyzing trace with hash 464617824, now seen corresponding path program 14 times [2024-06-27 22:48:59,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:59,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895747077] [2024-06-27 22:48:59,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:59,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:06,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:06,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:06,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895747077] [2024-06-27 22:49:06,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895747077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:06,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:06,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:49:06,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475969054] [2024-06-27 22:49:06,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:06,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:49:06,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:06,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:49:06,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:49:06,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:49:06,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 516 transitions, 11080 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:06,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:06,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:49:06,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:09,725 INFO L124 PetriNetUnfolderBase]: 4207/8093 cut-off events. [2024-06-27 22:49:09,725 INFO L125 PetriNetUnfolderBase]: For 464802/464808 co-relation queries the response was YES. [2024-06-27 22:49:09,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72573 conditions, 8093 events. 4207/8093 cut-off events. For 464802/464808 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 64799 event pairs, 1497 based on Foata normal form. 16/7826 useless extension candidates. Maximal degree in co-relation 72379. Up to 6688 conditions per place. [2024-06-27 22:49:09,840 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 492 selfloop transitions, 87 changer transitions 0/584 dead transitions. [2024-06-27 22:49:09,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 584 transitions, 12946 flow [2024-06-27 22:49:09,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:49:09,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:49:09,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 22:49:09,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2024-06-27 22:49:09,841 INFO L175 Difference]: Start difference. First operand has 411 places, 516 transitions, 11080 flow. Second operand 11 states and 190 transitions. [2024-06-27 22:49:09,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 584 transitions, 12946 flow [2024-06-27 22:49:11,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 584 transitions, 12851 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 22:49:11,895 INFO L231 Difference]: Finished difference. Result has 416 places, 521 transitions, 11359 flow [2024-06-27 22:49:11,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10985, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11359, PETRI_PLACES=416, PETRI_TRANSITIONS=521} [2024-06-27 22:49:11,895 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 376 predicate places. [2024-06-27 22:49:11,896 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 521 transitions, 11359 flow [2024-06-27 22:49:11,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:11,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:11,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:11,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 22:49:11,896 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:11,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:11,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2094050042, now seen corresponding path program 15 times [2024-06-27 22:49:11,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:11,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430100767] [2024-06-27 22:49:11,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:11,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:17,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:17,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430100767] [2024-06-27 22:49:17,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430100767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:17,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:17,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:49:17,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496686873] [2024-06-27 22:49:17,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:17,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:49:17,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:17,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:49:17,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:49:17,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:49:17,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 521 transitions, 11359 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:17,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:17,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:49:17,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:20,985 INFO L124 PetriNetUnfolderBase]: 4216/8100 cut-off events. [2024-06-27 22:49:20,985 INFO L125 PetriNetUnfolderBase]: For 449001/449007 co-relation queries the response was YES. [2024-06-27 22:49:21,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72838 conditions, 8100 events. 4216/8100 cut-off events. For 449001/449007 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 64841 event pairs, 1548 based on Foata normal form. 8/7828 useless extension candidates. Maximal degree in co-relation 72642. Up to 7060 conditions per place. [2024-06-27 22:49:21,134 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 505 selfloop transitions, 62 changer transitions 0/572 dead transitions. [2024-06-27 22:49:21,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 572 transitions, 12807 flow [2024-06-27 22:49:21,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:49:21,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:49:21,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 22:49:21,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2024-06-27 22:49:21,136 INFO L175 Difference]: Start difference. First operand has 416 places, 521 transitions, 11359 flow. Second operand 9 states and 158 transitions. [2024-06-27 22:49:21,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 572 transitions, 12807 flow [2024-06-27 22:49:23,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 572 transitions, 12578 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-27 22:49:23,542 INFO L231 Difference]: Finished difference. Result has 420 places, 526 transitions, 11440 flow [2024-06-27 22:49:23,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11132, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11440, PETRI_PLACES=420, PETRI_TRANSITIONS=526} [2024-06-27 22:49:23,542 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 380 predicate places. [2024-06-27 22:49:23,542 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 526 transitions, 11440 flow [2024-06-27 22:49:23,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:23,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:23,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:23,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 22:49:23,543 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:23,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:23,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1743613400, now seen corresponding path program 8 times [2024-06-27 22:49:23,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:23,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430216220] [2024-06-27 22:49:23,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:23,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:30,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:30,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430216220] [2024-06-27 22:49:30,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430216220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:30,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:30,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:49:30,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193892311] [2024-06-27 22:49:30,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:30,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:49:30,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:30,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:49:30,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:49:30,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:49:30,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 526 transitions, 11440 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:30,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:30,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:49:30,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:34,538 INFO L124 PetriNetUnfolderBase]: 4248/8193 cut-off events. [2024-06-27 22:49:34,538 INFO L125 PetriNetUnfolderBase]: For 469818/469824 co-relation queries the response was YES. [2024-06-27 22:49:34,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74233 conditions, 8193 events. 4248/8193 cut-off events. For 469818/469824 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 66035 event pairs, 1460 based on Foata normal form. 8/7908 useless extension candidates. Maximal degree in co-relation 74035. Up to 6609 conditions per place. [2024-06-27 22:49:34,677 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 403 selfloop transitions, 191 changer transitions 0/599 dead transitions. [2024-06-27 22:49:34,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 599 transitions, 13333 flow [2024-06-27 22:49:34,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:49:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:49:34,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 218 transitions. [2024-06-27 22:49:34,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658119658119658 [2024-06-27 22:49:34,685 INFO L175 Difference]: Start difference. First operand has 420 places, 526 transitions, 11440 flow. Second operand 13 states and 218 transitions. [2024-06-27 22:49:34,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 599 transitions, 13333 flow [2024-06-27 22:49:37,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 599 transitions, 13131 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-27 22:49:37,024 INFO L231 Difference]: Finished difference. Result has 431 places, 533 transitions, 12028 flow [2024-06-27 22:49:37,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11238, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12028, PETRI_PLACES=431, PETRI_TRANSITIONS=533} [2024-06-27 22:49:37,025 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 391 predicate places. [2024-06-27 22:49:37,025 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 533 transitions, 12028 flow [2024-06-27 22:49:37,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:37,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:37,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:37,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 22:49:37,025 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:37,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:37,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2094257587, now seen corresponding path program 6 times [2024-06-27 22:49:37,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:37,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855500771] [2024-06-27 22:49:37,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:37,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:44,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:44,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:44,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855500771] [2024-06-27 22:49:44,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855500771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:44,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:44,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:49:44,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698751072] [2024-06-27 22:49:44,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:44,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:49:44,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:44,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:49:44,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:49:44,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:49:44,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 533 transitions, 12028 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:44,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:44,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:49:44,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:49:47,835 INFO L124 PetriNetUnfolderBase]: 4257/8205 cut-off events. [2024-06-27 22:49:47,839 INFO L125 PetriNetUnfolderBase]: For 488163/488169 co-relation queries the response was YES. [2024-06-27 22:49:47,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75876 conditions, 8205 events. 4257/8205 cut-off events. For 488163/488169 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 65971 event pairs, 1531 based on Foata normal form. 9/7922 useless extension candidates. Maximal degree in co-relation 75673. Up to 6989 conditions per place. [2024-06-27 22:49:47,988 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 493 selfloop transitions, 85 changer transitions 0/583 dead transitions. [2024-06-27 22:49:47,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 583 transitions, 13716 flow [2024-06-27 22:49:47,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:49:47,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:49:47,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 22:49:47,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-27 22:49:47,990 INFO L175 Difference]: Start difference. First operand has 431 places, 533 transitions, 12028 flow. Second operand 10 states and 161 transitions. [2024-06-27 22:49:47,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 583 transitions, 13716 flow [2024-06-27 22:49:50,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 583 transitions, 13293 flow, removed 135 selfloop flow, removed 9 redundant places. [2024-06-27 22:49:50,724 INFO L231 Difference]: Finished difference. Result has 432 places, 538 transitions, 11982 flow [2024-06-27 22:49:50,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11623, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11982, PETRI_PLACES=432, PETRI_TRANSITIONS=538} [2024-06-27 22:49:50,725 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 392 predicate places. [2024-06-27 22:49:50,725 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 538 transitions, 11982 flow [2024-06-27 22:49:50,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:50,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:49:50,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:49:50,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 22:49:50,725 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:49:50,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:49:50,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1455846462, now seen corresponding path program 9 times [2024-06-27 22:49:50,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:49:50,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768922732] [2024-06-27 22:49:50,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:49:50,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:49:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:49:56,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:49:56,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:49:56,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768922732] [2024-06-27 22:49:56,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768922732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:49:56,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:49:56,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:49:56,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119115319] [2024-06-27 22:49:56,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:49:56,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:49:56,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:49:56,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:49:56,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:49:56,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:49:56,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 538 transitions, 11982 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:49:56,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:49:56,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:49:56,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:00,020 INFO L124 PetriNetUnfolderBase]: 4286/8259 cut-off events. [2024-06-27 22:50:00,021 INFO L125 PetriNetUnfolderBase]: For 491317/491323 co-relation queries the response was YES. [2024-06-27 22:50:00,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76452 conditions, 8259 events. 4286/8259 cut-off events. For 491317/491323 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 66467 event pairs, 1516 based on Foata normal form. 8/7974 useless extension candidates. Maximal degree in co-relation 76248. Up to 6978 conditions per place. [2024-06-27 22:50:00,189 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 494 selfloop transitions, 88 changer transitions 0/587 dead transitions. [2024-06-27 22:50:00,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 587 transitions, 13656 flow [2024-06-27 22:50:00,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:50:00,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:50:00,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 22:50:00,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-27 22:50:00,191 INFO L175 Difference]: Start difference. First operand has 432 places, 538 transitions, 11982 flow. Second operand 10 states and 161 transitions. [2024-06-27 22:50:00,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 587 transitions, 13656 flow [2024-06-27 22:50:02,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 587 transitions, 13388 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-27 22:50:02,611 INFO L231 Difference]: Finished difference. Result has 435 places, 542 transitions, 12058 flow [2024-06-27 22:50:02,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11718, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12058, PETRI_PLACES=435, PETRI_TRANSITIONS=542} [2024-06-27 22:50:02,612 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 395 predicate places. [2024-06-27 22:50:02,612 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 542 transitions, 12058 flow [2024-06-27 22:50:02,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:02,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:02,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:02,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 22:50:02,613 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:02,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:02,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1751065662, now seen corresponding path program 10 times [2024-06-27 22:50:02,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:02,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924966734] [2024-06-27 22:50:02,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:02,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:08,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:08,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:08,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924966734] [2024-06-27 22:50:08,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924966734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:08,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:08,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:50:08,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693570697] [2024-06-27 22:50:08,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:08,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:50:08,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:08,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:50:08,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:50:08,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:50:08,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 542 transitions, 12058 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:08,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:08,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:50:08,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:12,117 INFO L124 PetriNetUnfolderBase]: 4323/8323 cut-off events. [2024-06-27 22:50:12,117 INFO L125 PetriNetUnfolderBase]: For 490872/490878 co-relation queries the response was YES. [2024-06-27 22:50:12,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76699 conditions, 8323 events. 4323/8323 cut-off events. For 490872/490878 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 66948 event pairs, 1467 based on Foata normal form. 8/8039 useless extension candidates. Maximal degree in co-relation 76493. Up to 6884 conditions per place. [2024-06-27 22:50:12,280 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 495 selfloop transitions, 93 changer transitions 0/593 dead transitions. [2024-06-27 22:50:12,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 593 transitions, 13734 flow [2024-06-27 22:50:12,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:50:12,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:50:12,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 22:50:12,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-27 22:50:12,282 INFO L175 Difference]: Start difference. First operand has 435 places, 542 transitions, 12058 flow. Second operand 10 states and 161 transitions. [2024-06-27 22:50:12,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 593 transitions, 13734 flow [2024-06-27 22:50:14,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 593 transitions, 13460 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-27 22:50:14,906 INFO L231 Difference]: Finished difference. Result has 440 places, 549 transitions, 12261 flow [2024-06-27 22:50:14,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11784, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12261, PETRI_PLACES=440, PETRI_TRANSITIONS=549} [2024-06-27 22:50:14,907 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 400 predicate places. [2024-06-27 22:50:14,907 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 549 transitions, 12261 flow [2024-06-27 22:50:14,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:14,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:14,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:14,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 22:50:14,908 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:14,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:14,908 INFO L85 PathProgramCache]: Analyzing trace with hash -944855024, now seen corresponding path program 11 times [2024-06-27 22:50:14,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:14,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496398109] [2024-06-27 22:50:14,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:14,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:14,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:21,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:21,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496398109] [2024-06-27 22:50:21,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496398109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:21,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:21,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:50:21,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164157759] [2024-06-27 22:50:21,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:21,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:50:21,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:21,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:50:21,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:50:21,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:50:21,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 549 transitions, 12261 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:21,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:21,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:50:21,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:24,487 INFO L124 PetriNetUnfolderBase]: 4338/8126 cut-off events. [2024-06-27 22:50:24,487 INFO L125 PetriNetUnfolderBase]: For 506990/506996 co-relation queries the response was YES. [2024-06-27 22:50:24,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77227 conditions, 8126 events. 4338/8126 cut-off events. For 506990/506996 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 64261 event pairs, 1664 based on Foata normal form. 8/7916 useless extension candidates. Maximal degree in co-relation 77018. Up to 7240 conditions per place. [2024-06-27 22:50:24,648 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 507 selfloop transitions, 64 changer transitions 0/576 dead transitions. [2024-06-27 22:50:24,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 576 transitions, 13627 flow [2024-06-27 22:50:24,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:50:24,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:50:24,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-27 22:50:24,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-27 22:50:24,650 INFO L175 Difference]: Start difference. First operand has 440 places, 549 transitions, 12261 flow. Second operand 8 states and 129 transitions. [2024-06-27 22:50:24,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 576 transitions, 13627 flow [2024-06-27 22:50:27,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 576 transitions, 13310 flow, removed 81 selfloop flow, removed 6 redundant places. [2024-06-27 22:50:27,339 INFO L231 Difference]: Finished difference. Result has 442 places, 552 transitions, 12219 flow [2024-06-27 22:50:27,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11944, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12219, PETRI_PLACES=442, PETRI_TRANSITIONS=552} [2024-06-27 22:50:27,339 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 402 predicate places. [2024-06-27 22:50:27,339 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 552 transitions, 12219 flow [2024-06-27 22:50:27,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:27,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:27,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:27,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 22:50:27,340 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:27,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:27,340 INFO L85 PathProgramCache]: Analyzing trace with hash -944860976, now seen corresponding path program 16 times [2024-06-27 22:50:27,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:27,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885455313] [2024-06-27 22:50:27,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:27,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:33,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:33,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:33,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885455313] [2024-06-27 22:50:33,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885455313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:33,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:33,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:50:33,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284604644] [2024-06-27 22:50:33,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:33,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:50:33,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:33,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:50:33,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:50:33,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:50:33,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 552 transitions, 12219 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:33,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:33,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:50:33,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:36,221 INFO L124 PetriNetUnfolderBase]: 4403/8214 cut-off events. [2024-06-27 22:50:36,222 INFO L125 PetriNetUnfolderBase]: For 547558/547564 co-relation queries the response was YES. [2024-06-27 22:50:36,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78192 conditions, 8214 events. 4403/8214 cut-off events. For 547558/547564 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 64778 event pairs, 1524 based on Foata normal form. 16/8021 useless extension candidates. Maximal degree in co-relation 77982. Up to 6577 conditions per place. [2024-06-27 22:50:36,379 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 400 selfloop transitions, 188 changer transitions 0/593 dead transitions. [2024-06-27 22:50:36,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 593 transitions, 13875 flow [2024-06-27 22:50:36,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:50:36,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:50:36,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 22:50:36,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2024-06-27 22:50:36,380 INFO L175 Difference]: Start difference. First operand has 442 places, 552 transitions, 12219 flow. Second operand 8 states and 149 transitions. [2024-06-27 22:50:36,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 593 transitions, 13875 flow [2024-06-27 22:50:39,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 593 transitions, 13610 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-27 22:50:39,374 INFO L231 Difference]: Finished difference. Result has 444 places, 554 transitions, 12460 flow [2024-06-27 22:50:39,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11954, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12460, PETRI_PLACES=444, PETRI_TRANSITIONS=554} [2024-06-27 22:50:39,375 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 404 predicate places. [2024-06-27 22:50:39,375 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 554 transitions, 12460 flow [2024-06-27 22:50:39,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:39,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:39,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:39,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 22:50:39,376 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:39,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:39,376 INFO L85 PathProgramCache]: Analyzing trace with hash -939498596, now seen corresponding path program 17 times [2024-06-27 22:50:39,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:39,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660091020] [2024-06-27 22:50:39,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:39,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:46,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:46,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660091020] [2024-06-27 22:50:46,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660091020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:46,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:46,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:50:46,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295464903] [2024-06-27 22:50:46,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:46,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:50:46,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:46,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:50:46,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:50:46,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:50:46,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 554 transitions, 12460 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:46,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:46,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:50:46,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:50:50,828 INFO L124 PetriNetUnfolderBase]: 4581/8576 cut-off events. [2024-06-27 22:50:50,828 INFO L125 PetriNetUnfolderBase]: For 584641/584641 co-relation queries the response was YES. [2024-06-27 22:50:50,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82520 conditions, 8576 events. 4581/8576 cut-off events. For 584641/584641 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 68455 event pairs, 1678 based on Foata normal form. 10/8364 useless extension candidates. Maximal degree in co-relation 82310. Up to 7443 conditions per place. [2024-06-27 22:50:51,001 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 569 selfloop transitions, 42 changer transitions 0/616 dead transitions. [2024-06-27 22:50:51,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 616 transitions, 14514 flow [2024-06-27 22:50:51,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:50:51,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:50:51,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 22:50:51,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-06-27 22:50:51,003 INFO L175 Difference]: Start difference. First operand has 444 places, 554 transitions, 12460 flow. Second operand 11 states and 177 transitions. [2024-06-27 22:50:51,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 616 transitions, 14514 flow [2024-06-27 22:50:53,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 616 transitions, 14356 flow, removed 53 selfloop flow, removed 3 redundant places. [2024-06-27 22:50:53,815 INFO L231 Difference]: Finished difference. Result has 455 places, 563 transitions, 12780 flow [2024-06-27 22:50:53,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12305, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12780, PETRI_PLACES=455, PETRI_TRANSITIONS=563} [2024-06-27 22:50:53,816 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 415 predicate places. [2024-06-27 22:50:53,816 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 563 transitions, 12780 flow [2024-06-27 22:50:53,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:53,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:50:53,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:50:53,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 22:50:53,816 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:50:53,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:50:53,817 INFO L85 PathProgramCache]: Analyzing trace with hash -2125684916, now seen corresponding path program 12 times [2024-06-27 22:50:53,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:50:53,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511585863] [2024-06-27 22:50:53,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:50:53,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:50:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:50:59,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:50:59,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:50:59,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511585863] [2024-06-27 22:50:59,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511585863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:50:59,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:50:59,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:50:59,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461106022] [2024-06-27 22:50:59,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:50:59,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:50:59,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:50:59,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:50:59,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:50:59,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:50:59,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 563 transitions, 12780 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:50:59,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:50:59,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:50:59,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:02,987 INFO L124 PetriNetUnfolderBase]: 4614/8933 cut-off events. [2024-06-27 22:51:02,987 INFO L125 PetriNetUnfolderBase]: For 549071/549077 co-relation queries the response was YES. [2024-06-27 22:51:03,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82450 conditions, 8933 events. 4614/8933 cut-off events. For 549071/549077 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 73205 event pairs, 1626 based on Foata normal form. 8/8620 useless extension candidates. Maximal degree in co-relation 82234. Up to 7449 conditions per place. [2024-06-27 22:51:03,173 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 479 selfloop transitions, 120 changer transitions 0/604 dead transitions. [2024-06-27 22:51:03,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 604 transitions, 14391 flow [2024-06-27 22:51:03,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:51:03,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:51:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 22:51:03,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 22:51:03,188 INFO L175 Difference]: Start difference. First operand has 455 places, 563 transitions, 12780 flow. Second operand 8 states and 138 transitions. [2024-06-27 22:51:03,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 604 transitions, 14391 flow [2024-06-27 22:51:06,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 604 transitions, 14309 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 22:51:06,551 INFO L231 Difference]: Finished difference. Result has 457 places, 568 transitions, 13192 flow [2024-06-27 22:51:06,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12698, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13192, PETRI_PLACES=457, PETRI_TRANSITIONS=568} [2024-06-27 22:51:06,552 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 417 predicate places. [2024-06-27 22:51:06,552 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 568 transitions, 13192 flow [2024-06-27 22:51:06,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:06,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:06,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:06,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 22:51:06,553 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:06,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:06,553 INFO L85 PathProgramCache]: Analyzing trace with hash -939283394, now seen corresponding path program 13 times [2024-06-27 22:51:06,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:06,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674298369] [2024-06-27 22:51:06,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:06,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:12,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:12,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674298369] [2024-06-27 22:51:12,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674298369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:12,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:12,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:51:12,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166343463] [2024-06-27 22:51:12,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:12,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:51:12,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:12,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:51:12,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:51:12,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:51:12,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 568 transitions, 13192 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:12,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:12,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:51:12,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:16,722 INFO L124 PetriNetUnfolderBase]: 4618/8920 cut-off events. [2024-06-27 22:51:16,724 INFO L125 PetriNetUnfolderBase]: For 560048/560054 co-relation queries the response was YES. [2024-06-27 22:51:16,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83255 conditions, 8920 events. 4618/8920 cut-off events. For 560048/560054 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 72829 event pairs, 1584 based on Foata normal form. 8/8614 useless extension candidates. Maximal degree in co-relation 83037. Up to 7452 conditions per place. [2024-06-27 22:51:17,171 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 511 selfloop transitions, 90 changer transitions 0/606 dead transitions. [2024-06-27 22:51:17,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 606 transitions, 14682 flow [2024-06-27 22:51:17,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:51:17,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:51:17,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-27 22:51:17,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44753086419753085 [2024-06-27 22:51:17,173 INFO L175 Difference]: Start difference. First operand has 457 places, 568 transitions, 13192 flow. Second operand 9 states and 145 transitions. [2024-06-27 22:51:17,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 606 transitions, 14682 flow [2024-06-27 22:51:20,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 606 transitions, 14353 flow, removed 79 selfloop flow, removed 5 redundant places. [2024-06-27 22:51:20,087 INFO L231 Difference]: Finished difference. Result has 461 places, 569 transitions, 13099 flow [2024-06-27 22:51:20,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12863, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13099, PETRI_PLACES=461, PETRI_TRANSITIONS=569} [2024-06-27 22:51:20,088 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 421 predicate places. [2024-06-27 22:51:20,088 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 569 transitions, 13099 flow [2024-06-27 22:51:20,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:20,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:20,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:20,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 22:51:20,089 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:20,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:20,089 INFO L85 PathProgramCache]: Analyzing trace with hash -939492644, now seen corresponding path program 14 times [2024-06-27 22:51:20,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:20,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530645097] [2024-06-27 22:51:20,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:20,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:26,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:26,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:26,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530645097] [2024-06-27 22:51:26,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530645097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:26,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:26,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:51:26,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657641183] [2024-06-27 22:51:26,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:26,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:51:26,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:26,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:51:26,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:51:26,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:51:26,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 569 transitions, 13099 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:26,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:26,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:51:26,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:31,067 INFO L124 PetriNetUnfolderBase]: 4630/8662 cut-off events. [2024-06-27 22:51:31,068 INFO L125 PetriNetUnfolderBase]: For 543839/543839 co-relation queries the response was YES. [2024-06-27 22:51:31,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82362 conditions, 8662 events. 4630/8662 cut-off events. For 543839/543839 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 69229 event pairs, 1620 based on Foata normal form. 2/8442 useless extension candidates. Maximal degree in co-relation 82143. Up to 7337 conditions per place. [2024-06-27 22:51:31,243 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 443 selfloop transitions, 177 changer transitions 0/625 dead transitions. [2024-06-27 22:51:31,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 625 transitions, 14628 flow [2024-06-27 22:51:31,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:51:31,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:51:31,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-06-27 22:51:31,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44675925925925924 [2024-06-27 22:51:31,244 INFO L175 Difference]: Start difference. First operand has 461 places, 569 transitions, 13099 flow. Second operand 12 states and 193 transitions. [2024-06-27 22:51:31,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 625 transitions, 14628 flow [2024-06-27 22:51:34,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 625 transitions, 14339 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-27 22:51:34,705 INFO L231 Difference]: Finished difference. Result has 467 places, 574 transitions, 13301 flow [2024-06-27 22:51:34,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12810, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13301, PETRI_PLACES=467, PETRI_TRANSITIONS=574} [2024-06-27 22:51:34,706 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 427 predicate places. [2024-06-27 22:51:34,706 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 574 transitions, 13301 flow [2024-06-27 22:51:34,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:34,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:34,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:34,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 22:51:34,707 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:34,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:34,707 INFO L85 PathProgramCache]: Analyzing trace with hash 473008240, now seen corresponding path program 1 times [2024-06-27 22:51:34,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:34,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157456330] [2024-06-27 22:51:34,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:34,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:44,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:44,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157456330] [2024-06-27 22:51:44,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157456330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:44,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:44,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:51:44,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910534219] [2024-06-27 22:51:44,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:44,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:51:44,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:44,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:51:44,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:51:44,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:51:44,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 574 transitions, 13301 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:44,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:44,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:51:44,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:48,578 INFO L124 PetriNetUnfolderBase]: 4680/8823 cut-off events. [2024-06-27 22:51:48,578 INFO L125 PetriNetUnfolderBase]: For 562000/562000 co-relation queries the response was YES. [2024-06-27 22:51:48,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83172 conditions, 8823 events. 4680/8823 cut-off events. For 562000/562000 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 71181 event pairs, 1665 based on Foata normal form. 6/8586 useless extension candidates. Maximal degree in co-relation 82951. Up to 7685 conditions per place. [2024-06-27 22:51:48,735 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 551 selfloop transitions, 77 changer transitions 0/633 dead transitions. [2024-06-27 22:51:48,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 633 transitions, 15121 flow [2024-06-27 22:51:48,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:51:48,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:51:48,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:51:48,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49444444444444446 [2024-06-27 22:51:48,736 INFO L175 Difference]: Start difference. First operand has 467 places, 574 transitions, 13301 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:51:48,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 633 transitions, 15121 flow [2024-06-27 22:51:51,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 633 transitions, 15004 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 22:51:51,963 INFO L231 Difference]: Finished difference. Result has 470 places, 575 transitions, 13418 flow [2024-06-27 22:51:51,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13184, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13418, PETRI_PLACES=470, PETRI_TRANSITIONS=575} [2024-06-27 22:51:51,964 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 430 predicate places. [2024-06-27 22:51:51,965 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 575 transitions, 13418 flow [2024-06-27 22:51:51,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:51,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:51,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:51,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 22:51:51,965 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:51:51,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:51,965 INFO L85 PathProgramCache]: Analyzing trace with hash -401327086, now seen corresponding path program 2 times [2024-06-27 22:51:51,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:51,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154697893] [2024-06-27 22:51:51,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:51,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:59,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:59,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:59,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154697893] [2024-06-27 22:51:59,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154697893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:59,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:59,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:51:59,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960497816] [2024-06-27 22:51:59,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:59,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:51:59,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:59,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:51:59,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:51:59,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:51:59,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 575 transitions, 13418 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:59,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:59,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:51:59,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:04,178 INFO L124 PetriNetUnfolderBase]: 4754/9017 cut-off events. [2024-06-27 22:52:04,178 INFO L125 PetriNetUnfolderBase]: For 582129/582129 co-relation queries the response was YES. [2024-06-27 22:52:04,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84721 conditions, 9017 events. 4754/9017 cut-off events. For 582129/582129 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 73375 event pairs, 1767 based on Foata normal form. 6/8762 useless extension candidates. Maximal degree in co-relation 84499. Up to 7833 conditions per place. [2024-06-27 22:52:04,351 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 564 selfloop transitions, 87 changer transitions 0/656 dead transitions. [2024-06-27 22:52:04,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 656 transitions, 15287 flow [2024-06-27 22:52:04,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-27 22:52:04,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-27 22:52:04,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 265 transitions. [2024-06-27 22:52:04,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43300653594771243 [2024-06-27 22:52:04,352 INFO L175 Difference]: Start difference. First operand has 470 places, 575 transitions, 13418 flow. Second operand 17 states and 265 transitions. [2024-06-27 22:52:04,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 656 transitions, 15287 flow [2024-06-27 22:52:07,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 656 transitions, 15111 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-27 22:52:07,808 INFO L231 Difference]: Finished difference. Result has 484 places, 581 transitions, 13636 flow [2024-06-27 22:52:07,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13242, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=13636, PETRI_PLACES=484, PETRI_TRANSITIONS=581} [2024-06-27 22:52:07,809 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 444 predicate places. [2024-06-27 22:52:07,809 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 581 transitions, 13636 flow [2024-06-27 22:52:07,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:07,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:07,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:07,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 22:52:07,809 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:52:07,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:07,810 INFO L85 PathProgramCache]: Analyzing trace with hash -810859654, now seen corresponding path program 1 times [2024-06-27 22:52:07,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:07,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593861741] [2024-06-27 22:52:07,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:07,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:15,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:15,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593861741] [2024-06-27 22:52:15,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593861741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:15,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:15,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:52:15,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048107074] [2024-06-27 22:52:15,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:15,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:52:15,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:15,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:52:15,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:52:15,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:52:15,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 581 transitions, 13636 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:15,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:15,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:52:15,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:19,568 INFO L124 PetriNetUnfolderBase]: 4868/9197 cut-off events. [2024-06-27 22:52:19,568 INFO L125 PetriNetUnfolderBase]: For 606590/606590 co-relation queries the response was YES. [2024-06-27 22:52:19,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86568 conditions, 9197 events. 4868/9197 cut-off events. For 606590/606590 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 74953 event pairs, 1789 based on Foata normal form. 8/8955 useless extension candidates. Maximal degree in co-relation 86341. Up to 7867 conditions per place. [2024-06-27 22:52:19,751 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 561 selfloop transitions, 83 changer transitions 0/649 dead transitions. [2024-06-27 22:52:19,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 649 transitions, 15583 flow [2024-06-27 22:52:19,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 22:52:19,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 22:52:19,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 216 transitions. [2024-06-27 22:52:19,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 22:52:19,753 INFO L175 Difference]: Start difference. First operand has 484 places, 581 transitions, 13636 flow. Second operand 14 states and 216 transitions. [2024-06-27 22:52:19,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 649 transitions, 15583 flow [2024-06-27 22:52:23,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 649 transitions, 15378 flow, removed 33 selfloop flow, removed 13 redundant places. [2024-06-27 22:52:23,193 INFO L231 Difference]: Finished difference. Result has 486 places, 595 transitions, 14053 flow [2024-06-27 22:52:23,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13431, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=14053, PETRI_PLACES=486, PETRI_TRANSITIONS=595} [2024-06-27 22:52:23,194 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 446 predicate places. [2024-06-27 22:52:23,194 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 595 transitions, 14053 flow [2024-06-27 22:52:23,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:23,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:23,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:23,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 22:52:23,195 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:52:23,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:23,195 INFO L85 PathProgramCache]: Analyzing trace with hash -804366208, now seen corresponding path program 3 times [2024-06-27 22:52:23,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:23,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350739531] [2024-06-27 22:52:23,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:23,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:30,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:30,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:30,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350739531] [2024-06-27 22:52:30,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350739531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:30,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:30,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:52:30,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486187343] [2024-06-27 22:52:30,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:30,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:52:30,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:30,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:52:30,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:52:30,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 36 [2024-06-27 22:52:30,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 595 transitions, 14053 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:30,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:30,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 36 [2024-06-27 22:52:30,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:35,167 INFO L124 PetriNetUnfolderBase]: 4925/9548 cut-off events. [2024-06-27 22:52:35,168 INFO L125 PetriNetUnfolderBase]: For 625717/625717 co-relation queries the response was YES. [2024-06-27 22:52:35,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88476 conditions, 9548 events. 4925/9548 cut-off events. For 625717/625717 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 79433 event pairs, 1705 based on Foata normal form. 6/9224 useless extension candidates. Maximal degree in co-relation 88247. Up to 8167 conditions per place. [2024-06-27 22:52:35,356 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 582 selfloop transitions, 73 changer transitions 0/660 dead transitions. [2024-06-27 22:52:35,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 660 transitions, 15745 flow [2024-06-27 22:52:35,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:52:35,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:52:35,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 212 transitions. [2024-06-27 22:52:35,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452991452991453 [2024-06-27 22:52:35,358 INFO L175 Difference]: Start difference. First operand has 486 places, 595 transitions, 14053 flow. Second operand 13 states and 212 transitions. [2024-06-27 22:52:35,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 660 transitions, 15745 flow Killed by 15