./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/mutex-meet/popl20-more-queue-add-3-nl.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/weaver/popl20-more-queue-add-3-nl.wvr.c ./goblint.2024-05-07_14-17-48.files/mutex-meet/popl20-more-queue-add-3-nl.wvr.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-wip.fs.witness-ghost-b44c828-m [2024-05-12 11:01:04,581 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 11:01:04,663 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 11:01:04,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 11:01:04,668 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 11:01:04,694 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 11:01:04,694 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 11:01:04,694 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 11:01:04,695 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 11:01:04,698 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 11:01:04,698 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 11:01:04,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 11:01:04,699 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 11:01:04,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 11:01:04,700 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 11:01:04,701 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 11:01:04,701 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 11:01:04,701 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 11:01:04,701 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 11:01:04,701 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 11:01:04,702 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 11:01:04,703 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 11:01:04,703 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 11:01:04,703 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 11:01:04,703 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 11:01:04,703 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 11:01:04,704 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 11:01:04,704 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 11:01:04,704 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 11:01:04,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 11:01:04,705 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 11:01:04,705 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 11:01:04,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 11:01:04,706 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 11:01:04,706 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 11:01:04,706 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 11:01:04,706 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 11:01:04,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 11:01:04,707 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 11:01:04,707 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 11:01:04,707 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 11:01:04,707 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 11:01:04,707 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 11:01:04,707 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 11:01:04,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 11:01:04,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 11:01:04,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 11:01:04,935 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 11:01:04,935 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 11:01:04,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-05-12 11:01:05,981 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 11:01:06,166 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 11:01:06,167 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-05-12 11:01:06,173 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3331ce2f5/65c7f1195e56497fae2e6327ad175cd7/FLAG9138303ab [2024-05-12 11:01:06,184 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3331ce2f5/65c7f1195e56497fae2e6327ad175cd7 [2024-05-12 11:01:06,186 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 11:01:06,187 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 11:01:06,187 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/popl20-more-queue-add-3-nl.wvr.yml/witness.yml [2024-05-12 11:01:06,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 11:01:06,260 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 11:01:06,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 11:01:06,261 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 11:01:06,265 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 11:01:06,265 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 11:01:06" (1/2) ... [2024-05-12 11:01:06,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ca6764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:01:06, skipping insertion in model container [2024-05-12 11:01:06,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 11:01:06" (1/2) ... [2024-05-12 11:01:06,268 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62cbc93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:01:06, skipping insertion in model container [2024-05-12 11:01:06,269 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:01:06" (2/2) ... [2024-05-12 11:01:06,270 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ca6764 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:01:06, skipping insertion in model container [2024-05-12 11:01:06,270 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:01:06" (2/2) ... [2024-05-12 11:01:06,270 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 11:01:06,287 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 11:01:06,288 INFO L97 edCorrectnessWitness]: Location invariant before [L130-L130] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((2147483648LL + (long long )C) + (long long )q1_front >= 0LL && (2147483648LL + (long long )C) + (long long )n1 >= 0LL) && (2147483648LL + (long long )C) + (long long )q2_front >= 0LL) && (2147483648LL + (long long )C) + (long long )q2_back >= 0LL) && (2147483648LL + (long long )C) + (long long )n2 >= 0LL) && (2147483648LL + (long long )C) + (long long )N >= 0LL) && (4294967296LL + (long long )q1_front) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )q1_front) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )n1) + (long long )q1_front >= 0LL) && (4294967296LL + (long long )n1) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )n1) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )n1) + (long long )n2 >= 0LL) && (4294967296LL + (long long )q2_back) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )n2) + (long long )q1_front >= 0LL) && (4294967296LL + (long long )n2) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )n2) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )N) + (long long )q1_front >= 0LL) && (4294967296LL + (long long )N) + (long long )n1 >= 0LL) && (4294967296LL + (long long )N) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )N) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )N) + (long long )n2 >= 0LL) && (4294967295LL - (long long )n1) + (long long )q1_front >= 0LL) && (4294967295LL - (long long )n1) + (long long )q2_front >= 0LL) && (4294967295LL - (long long )n1) + (long long )q2_back >= 0LL) && (4294967295LL - (long long )n1) + (long long )n2 >= 0LL) && (4294967295LL - (long long )n2) + (long long )q1_front >= 0LL) && (4294967295LL - (long long )n2) + (long long )q2_front >= 0LL) && (4294967295LL - (long long )n2) + (long long )q2_back >= 0LL) && (4294967295LL - (long long )N) + (long long )q1_front >= 0LL) && (4294967295LL - (long long )N) + (long long )n1 >= 0LL) && (4294967295LL - (long long )N) + (long long )q2_front >= 0LL) && (4294967295LL - (long long )N) + (long long )q2_back >= 0LL) && (4294967295LL - (long long )N) + (long long )n2 >= 0LL) && (6442450943LL - (long long )C) + (long long )q1_front >= 0LL) && (6442450943LL - (long long )C) + (long long )n1 >= 0LL) && (6442450943LL - (long long )C) + (long long )q2_front >= 0LL) && (6442450943LL - (long long )C) + (long long )q2_back >= 0LL) && (6442450943LL - (long long )C) + (long long )n2 >= 0LL) && (6442450943LL - (long long )C) + (long long )N >= 0LL) && (2147483647LL + (long long )C) - (long long )n1 >= 0LL) && (2147483647LL + (long long )C) - (long long )n2 >= 0LL) && (2147483647LL + (long long )C) - (long long )N >= 0LL) && (4294967295LL + (long long )n1) - (long long )n2 >= 0LL) && (4294967295LL + (long long )N) - (long long )n1 >= 0LL) && (4294967295LL + (long long )N) - (long long )n2 >= 0LL) && (4294967294LL - (long long )n1) - (long long )n2 >= 0LL) && (4294967294LL - (long long )N) - (long long )n1 >= 0LL) && (4294967294LL - (long long )N) - (long long )n2 >= 0LL) && (6442450942LL - (long long )C) - (long long )n1 >= 0LL) && (6442450942LL - (long long )C) - (long long )n2 >= 0LL) && (6442450942LL - (long long )C) - (long long )N >= 0LL) [2024-05-12 11:01:06,289 INFO L97 edCorrectnessWitness]: Location invariant before [L128-L128] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((2147483648LL + (long long )C) + (long long )q1_front >= 0LL && (2147483648LL + (long long )C) + (long long )n1 >= 0LL) && (2147483648LL + (long long )C) + (long long )q2_front >= 0LL) && (2147483648LL + (long long )C) + (long long )q2_back >= 0LL) && (2147483648LL + (long long )C) + (long long )n2 >= 0LL) && (2147483648LL + (long long )C) + (long long )N >= 0LL) && (4294967296LL + (long long )q1_front) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )q1_front) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )n1) + (long long )q1_front >= 0LL) && (4294967296LL + (long long )n1) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )n1) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )n1) + (long long )n2 >= 0LL) && (4294967296LL + (long long )q2_back) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )n2) + (long long )q1_front >= 0LL) && (4294967296LL + (long long )n2) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )n2) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )N) + (long long )q1_front >= 0LL) && (4294967296LL + (long long )N) + (long long )n1 >= 0LL) && (4294967296LL + (long long )N) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )N) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )N) + (long long )n2 >= 0LL) && (4294967295LL - (long long )n1) + (long long )q1_front >= 0LL) && (4294967295LL - (long long )n1) + (long long )q2_front >= 0LL) && (4294967295LL - (long long )n1) + (long long )q2_back >= 0LL) && (4294967295LL - (long long )n1) + (long long )n2 >= 0LL) && (4294967295LL - (long long )n2) + (long long )q1_front >= 0LL) && (4294967295LL - (long long )n2) + (long long )q2_front >= 0LL) && (4294967295LL - (long long )n2) + (long long )q2_back >= 0LL) && (4294967295LL - (long long )N) + (long long )q1_front >= 0LL) && (4294967295LL - (long long )N) + (long long )n1 >= 0LL) && (4294967295LL - (long long )N) + (long long )q2_front >= 0LL) && (4294967295LL - (long long )N) + (long long )q2_back >= 0LL) && (4294967295LL - (long long )N) + (long long )n2 >= 0LL) && (6442450943LL - (long long )C) + (long long )q1_front >= 0LL) && (6442450943LL - (long long )C) + (long long )n1 >= 0LL) && (6442450943LL - (long long )C) + (long long )q2_front >= 0LL) && (6442450943LL - (long long )C) + (long long )q2_back >= 0LL) && (6442450943LL - (long long )C) + (long long )n2 >= 0LL) && (6442450943LL - (long long )C) + (long long )N >= 0LL) && (2147483647LL + (long long )C) - (long long )n1 >= 0LL) && (2147483647LL + (long long )C) - (long long )n2 >= 0LL) && (2147483647LL + (long long )C) - (long long )N >= 0LL) && (4294967295LL + (long long )n1) - (long long )n2 >= 0LL) && (4294967295LL + (long long )N) - (long long )n1 >= 0LL) && (4294967295LL + (long long )N) - (long long )n2 >= 0LL) && (4294967294LL - (long long )n1) - (long long )n2 >= 0LL) && (4294967294LL - (long long )N) - (long long )n1 >= 0LL) && (4294967294LL - (long long )N) - (long long )n2 >= 0LL) && (6442450942LL - (long long )C) - (long long )n1 >= 0LL) && (6442450942LL - (long long )C) - (long long )n2 >= 0LL) && (6442450942LL - (long long )C) - (long long )N >= 0LL) [2024-05-12 11:01:06,289 INFO L97 edCorrectnessWitness]: Location invariant before [L129-L129] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((2147483648LL + (long long )C) + (long long )q1_front >= 0LL && (2147483648LL + (long long )C) + (long long )n1 >= 0LL) && (2147483648LL + (long long )C) + (long long )q2_front >= 0LL) && (2147483648LL + (long long )C) + (long long )q2_back >= 0LL) && (2147483648LL + (long long )C) + (long long )n2 >= 0LL) && (2147483648LL + (long long )C) + (long long )N >= 0LL) && (4294967296LL + (long long )q1_front) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )q1_front) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )n1) + (long long )q1_front >= 0LL) && (4294967296LL + (long long )n1) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )n1) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )n1) + (long long )n2 >= 0LL) && (4294967296LL + (long long )q2_back) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )n2) + (long long )q1_front >= 0LL) && (4294967296LL + (long long )n2) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )n2) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )N) + (long long )q1_front >= 0LL) && (4294967296LL + (long long )N) + (long long )n1 >= 0LL) && (4294967296LL + (long long )N) + (long long )q2_front >= 0LL) && (4294967296LL + (long long )N) + (long long )q2_back >= 0LL) && (4294967296LL + (long long )N) + (long long )n2 >= 0LL) && (4294967295LL - (long long )n1) + (long long )q1_front >= 0LL) && (4294967295LL - (long long )n1) + (long long )q2_front >= 0LL) && (4294967295LL - (long long )n1) + (long long )q2_back >= 0LL) && (4294967295LL - (long long )n1) + (long long )n2 >= 0LL) && (4294967295LL - (long long )n2) + (long long )q1_front >= 0LL) && (4294967295LL - (long long )n2) + (long long )q2_front >= 0LL) && (4294967295LL - (long long )n2) + (long long )q2_back >= 0LL) && (4294967295LL - (long long )N) + (long long )q1_front >= 0LL) && (4294967295LL - (long long )N) + (long long )n1 >= 0LL) && (4294967295LL - (long long )N) + (long long )q2_front >= 0LL) && (4294967295LL - (long long )N) + (long long )q2_back >= 0LL) && (4294967295LL - (long long )N) + (long long )n2 >= 0LL) && (6442450943LL - (long long )C) + (long long )q1_front >= 0LL) && (6442450943LL - (long long )C) + (long long )n1 >= 0LL) && (6442450943LL - (long long )C) + (long long )q2_front >= 0LL) && (6442450943LL - (long long )C) + (long long )q2_back >= 0LL) && (6442450943LL - (long long )C) + (long long )n2 >= 0LL) && (6442450943LL - (long long )C) + (long long )N >= 0LL) && (2147483647LL + (long long )C) - (long long )n1 >= 0LL) && (2147483647LL + (long long )C) - (long long )n2 >= 0LL) && (2147483647LL + (long long )C) - (long long )N >= 0LL) && (4294967295LL + (long long )n1) - (long long )n2 >= 0LL) && (4294967295LL + (long long )N) - (long long )n1 >= 0LL) && (4294967295LL + (long long )N) - (long long )n2 >= 0LL) && (4294967294LL - (long long )n1) - (long long )n2 >= 0LL) && (4294967294LL - (long long )N) - (long long )n1 >= 0LL) && (4294967294LL - (long long )N) - (long long )n2 >= 0LL) && (6442450942LL - (long long )C) - (long long )n1 >= 0LL) && (6442450942LL - (long long )C) - (long long )n2 >= 0LL) && (6442450942LL - (long long )C) - (long long )N >= 0LL) [2024-05-12 11:01:06,289 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 11:01:06,289 INFO L106 edCorrectnessWitness]: ghost_update [L127-L127] multithreaded = 1; [2024-05-12 11:01:06,309 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 11:01:06,490 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2024-05-12 11:01:06,500 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 11:01:06,508 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 11:01:06,639 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2024-05-12 11:01:06,647 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 11:01:06,675 INFO L206 MainTranslator]: Completed translation [2024-05-12 11:01:06,676 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:01:06 WrapperNode [2024-05-12 11:01:06,676 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 11:01:06,677 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 11:01:06,677 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 11:01:06,677 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 11:01:06,682 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 12.05 11:01:06" (1/1) ... [2024-05-12 11:01:06,700 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 12.05 11:01:06" (1/1) ... [2024-05-12 11:01:06,741 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 273 [2024-05-12 11:01:06,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 11:01:06,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 11:01:06,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 11:01:06,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 11:01:06,754 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:01:06" (1/1) ... [2024-05-12 11:01:06,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:01:06" (1/1) ... [2024-05-12 11:01:06,767 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:01:06" (1/1) ... [2024-05-12 11:01:06,795 INFO L175 MemorySlicer]: Split 15 memory accesses to 5 slices as follows [2, 2, 2, 7, 2]. 47 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 5 writes are split as follows [0, 1, 1, 2, 1]. [2024-05-12 11:01:06,796 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:01:06" (1/1) ... [2024-05-12 11:01:06,796 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:01:06" (1/1) ... [2024-05-12 11:01:06,805 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:01:06" (1/1) ... [2024-05-12 11:01:06,808 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:01:06" (1/1) ... [2024-05-12 11:01:06,809 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:01:06" (1/1) ... [2024-05-12 11:01:06,811 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:01:06" (1/1) ... [2024-05-12 11:01:06,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 11:01:06,814 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 11:01:06,815 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 11:01:06,815 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 11:01:06,815 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:01:06" (1/1) ... [2024-05-12 11:01:06,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 11:01:06,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:01:06,837 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) [2024-05-12 11:01:06,853 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 [2024-05-12 11:01:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 11:01:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 11:01:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 11:01:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 11:01:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 11:01:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 11:01:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 11:01:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 11:01:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 11:01:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 11:01:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 11:01:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-05-12 11:01:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-05-12 11:01:06,875 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-05-12 11:01:06,876 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-05-12 11:01:06,876 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-05-12 11:01:06,876 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-05-12 11:01:06,876 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-05-12 11:01:06,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 11:01:06,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 11:01:06,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 11:01:06,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 11:01:06,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 11:01:06,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 11:01:06,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 11:01:06,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-05-12 11:01:06,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 11:01:06,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 11:01:06,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 11:01:06,879 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 11:01:06,971 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 11:01:06,973 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 11:01:07,482 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 11:01:07,482 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 11:01:07,714 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 11:01:07,715 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-05-12 11:01:07,715 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 11:01:07 BoogieIcfgContainer [2024-05-12 11:01:07,715 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 11:01:07,718 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 11:01:07,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 11:01:07,720 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 11:01:07,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 11:01:06" (1/4) ... [2024-05-12 11:01:07,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55018f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 11:01:07, skipping insertion in model container [2024-05-12 11:01:07,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:01:06" (2/4) ... [2024-05-12 11:01:07,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55018f51 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 11:01:07, skipping insertion in model container [2024-05-12 11:01:07,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:01:06" (3/4) ... [2024-05-12 11:01:07,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55018f51 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 11:01:07, skipping insertion in model container [2024-05-12 11:01:07,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 11:01:07" (4/4) ... [2024-05-12 11:01:07,725 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-05-12 11:01:07,740 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 11:01:07,740 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-05-12 11:01:07,740 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 11:01:07,782 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-05-12 11:01:07,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 54 transitions, 129 flow [2024-05-12 11:01:07,881 INFO L124 PetriNetUnfolderBase]: 7/51 cut-off events. [2024-05-12 11:01:07,881 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-05-12 11:01:07,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 51 events. 7/51 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-05-12 11:01:07,884 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 54 transitions, 129 flow [2024-05-12 11:01:07,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 50 transitions, 118 flow [2024-05-12 11:01:07,892 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 11:01:07,896 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;@6cf099e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 11:01:07,896 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-05-12 11:01:07,899 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 11:01:07,900 INFO L124 PetriNetUnfolderBase]: 2/10 cut-off events. [2024-05-12 11:01:07,900 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 11:01:07,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:07,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:07,901 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:07,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:07,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1065594297, now seen corresponding path program 1 times [2024-05-12 11:01:07,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:07,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653661111] [2024-05-12 11:01:07,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:07,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:08,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:01:08,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:08,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653661111] [2024-05-12 11:01:08,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653661111] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:08,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:08,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 11:01:08,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95163879] [2024-05-12 11:01:08,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:08,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 11:01:08,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:08,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 11:01:08,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 11:01:08,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-05-12 11:01:08,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:08,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:08,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-05-12 11:01:08,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:09,306 INFO L124 PetriNetUnfolderBase]: 1838/2805 cut-off events. [2024-05-12 11:01:09,306 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-05-12 11:01:09,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5350 conditions, 2805 events. 1838/2805 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13933 event pairs, 1453 based on Foata normal form. 240/2818 useless extension candidates. Maximal degree in co-relation 4934. Up to 2414 conditions per place. [2024-05-12 11:01:09,325 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 34 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-05-12 11:01:09,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 180 flow [2024-05-12 11:01:09,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 11:01:09,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 11:01:09,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-05-12 11:01:09,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41203703703703703 [2024-05-12 11:01:09,336 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 118 flow. Second operand 4 states and 89 transitions. [2024-05-12 11:01:09,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 180 flow [2024-05-12 11:01:09,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 168 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-05-12 11:01:09,351 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 100 flow [2024-05-12 11:01:09,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2024-05-12 11:01:09,357 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -6 predicate places. [2024-05-12 11:01:09,357 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 100 flow [2024-05-12 11:01:09,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:09,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:09,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:09,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 11:01:09,358 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:09,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:09,360 INFO L85 PathProgramCache]: Analyzing trace with hash 476337570, now seen corresponding path program 1 times [2024-05-12 11:01:09,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:09,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829773832] [2024-05-12 11:01:09,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:09,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:01:09,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:09,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829773832] [2024-05-12 11:01:09,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829773832] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:09,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:09,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 11:01:09,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022074602] [2024-05-12 11:01:09,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:09,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 11:01:09,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:09,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 11:01:09,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 11:01:09,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-05-12 11:01:09,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 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) [2024-05-12 11:01:09,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:09,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-05-12 11:01:09,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:09,881 INFO L124 PetriNetUnfolderBase]: 1956/3028 cut-off events. [2024-05-12 11:01:09,883 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-05-12 11:01:09,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5693 conditions, 3028 events. 1956/3028 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15431 event pairs, 1557 based on Foata normal form. 110/2932 useless extension candidates. Maximal degree in co-relation 5253. Up to 2419 conditions per place. [2024-05-12 11:01:09,896 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 35 selfloop transitions, 2 changer transitions 22/68 dead transitions. [2024-05-12 11:01:09,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 68 transitions, 271 flow [2024-05-12 11:01:09,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 11:01:09,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 11:01:09,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-05-12 11:01:09,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5074074074074074 [2024-05-12 11:01:09,904 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 100 flow. Second operand 5 states and 137 transitions. [2024-05-12 11:01:09,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 68 transitions, 271 flow [2024-05-12 11:01:09,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 68 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 11:01:09,906 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 119 flow [2024-05-12 11:01:09,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-05-12 11:01:09,907 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2024-05-12 11:01:09,907 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 119 flow [2024-05-12 11:01:09,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 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) [2024-05-12 11:01:09,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:09,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:09,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 11:01:09,908 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:09,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:09,910 INFO L85 PathProgramCache]: Analyzing trace with hash 2035329724, now seen corresponding path program 1 times [2024-05-12 11:01:09,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:09,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144240068] [2024-05-12 11:01:09,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:09,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:10,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-05-12 11:01:10,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:10,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144240068] [2024-05-12 11:01:10,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144240068] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:10,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:10,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 11:01:10,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334469818] [2024-05-12 11:01:10,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:10,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 11:01:10,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:10,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 11:01:10,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 11:01:10,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-05-12 11:01:10,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 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) [2024-05-12 11:01:10,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:10,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-05-12 11:01:10,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:10,414 INFO L124 PetriNetUnfolderBase]: 2187/3397 cut-off events. [2024-05-12 11:01:10,415 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2024-05-12 11:01:10,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7042 conditions, 3397 events. 2187/3397 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 17918 event pairs, 1743 based on Foata normal form. 100/3298 useless extension candidates. Maximal degree in co-relation 7029. Up to 2420 conditions per place. [2024-05-12 11:01:10,430 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 36 selfloop transitions, 2 changer transitions 22/69 dead transitions. [2024-05-12 11:01:10,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 69 transitions, 300 flow [2024-05-12 11:01:10,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 11:01:10,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 11:01:10,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-05-12 11:01:10,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601851851851852 [2024-05-12 11:01:10,432 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 119 flow. Second operand 4 states and 121 transitions. [2024-05-12 11:01:10,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 69 transitions, 300 flow [2024-05-12 11:01:10,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 288 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-05-12 11:01:10,434 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 127 flow [2024-05-12 11:01:10,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-05-12 11:01:10,435 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-05-12 11:01:10,435 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 127 flow [2024-05-12 11:01:10,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 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) [2024-05-12 11:01:10,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:10,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:10,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 11:01:10,436 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:10,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:10,437 INFO L85 PathProgramCache]: Analyzing trace with hash -899799934, now seen corresponding path program 1 times [2024-05-12 11:01:10,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:10,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030542823] [2024-05-12 11:01:10,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:10,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:11,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:11,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:11,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030542823] [2024-05-12 11:01:11,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030542823] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:11,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:11,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:11,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162416773] [2024-05-12 11:01:11,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:11,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:11,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:11,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:11,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:11,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:11,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 127 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:11,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:11,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:11,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:12,191 INFO L124 PetriNetUnfolderBase]: 3172/4865 cut-off events. [2024-05-12 11:01:12,191 INFO L125 PetriNetUnfolderBase]: For 1029/1029 co-relation queries the response was YES. [2024-05-12 11:01:12,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10506 conditions, 4865 events. 3172/4865 cut-off events. For 1029/1029 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 26391 event pairs, 160 based on Foata normal form. 1/4762 useless extension candidates. Maximal degree in co-relation 10487. Up to 2959 conditions per place. [2024-05-12 11:01:12,216 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 133 selfloop transitions, 27 changer transitions 4/171 dead transitions. [2024-05-12 11:01:12,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 171 transitions, 778 flow [2024-05-12 11:01:12,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 11:01:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 11:01:12,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 319 transitions. [2024-05-12 11:01:12,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49228395061728397 [2024-05-12 11:01:12,220 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 127 flow. Second operand 12 states and 319 transitions. [2024-05-12 11:01:12,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 171 transitions, 778 flow [2024-05-12 11:01:12,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 171 transitions, 774 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-05-12 11:01:12,225 INFO L231 Difference]: Finished difference. Result has 68 places, 72 transitions, 275 flow [2024-05-12 11:01:12,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=275, PETRI_PLACES=68, PETRI_TRANSITIONS=72} [2024-05-12 11:01:12,226 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2024-05-12 11:01:12,226 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 72 transitions, 275 flow [2024-05-12 11:01:12,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:12,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:12,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:12,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 11:01:12,227 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:12,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:12,228 INFO L85 PathProgramCache]: Analyzing trace with hash 181687442, now seen corresponding path program 2 times [2024-05-12 11:01:12,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:12,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749327071] [2024-05-12 11:01:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:12,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:12,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:12,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:12,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749327071] [2024-05-12 11:01:12,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749327071] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:12,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:12,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 11:01:12,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410104156] [2024-05-12 11:01:12,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:12,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 11:01:12,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:12,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 11:01:12,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 11:01:12,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-05-12 11:01:12,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 72 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:12,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:12,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-05-12 11:01:12,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:12,632 INFO L124 PetriNetUnfolderBase]: 2435/3855 cut-off events. [2024-05-12 11:01:12,633 INFO L125 PetriNetUnfolderBase]: For 2386/2433 co-relation queries the response was YES. [2024-05-12 11:01:12,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10229 conditions, 3855 events. 2435/3855 cut-off events. For 2386/2433 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 20806 event pairs, 611 based on Foata normal form. 81/3849 useless extension candidates. Maximal degree in co-relation 10203. Up to 3070 conditions per place. [2024-05-12 11:01:12,654 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 77 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2024-05-12 11:01:12,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 91 transitions, 499 flow [2024-05-12 11:01:12,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 11:01:12,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 11:01:12,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-05-12 11:01:12,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6049382716049383 [2024-05-12 11:01:12,655 INFO L175 Difference]: Start difference. First operand has 68 places, 72 transitions, 275 flow. Second operand 3 states and 98 transitions. [2024-05-12 11:01:12,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 91 transitions, 499 flow [2024-05-12 11:01:12,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 91 transitions, 497 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 11:01:12,660 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 291 flow [2024-05-12 11:01:12,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=291, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2024-05-12 11:01:12,660 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 17 predicate places. [2024-05-12 11:01:12,660 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 291 flow [2024-05-12 11:01:12,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:12,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:12,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:12,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 11:01:12,661 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:12,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:12,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1715964082, now seen corresponding path program 3 times [2024-05-12 11:01:12,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:12,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524238565] [2024-05-12 11:01:12,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:12,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:12,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:12,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:12,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524238565] [2024-05-12 11:01:12,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524238565] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:12,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:12,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 11:01:12,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993514825] [2024-05-12 11:01:12,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:12,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 11:01:12,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:12,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 11:01:12,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 11:01:12,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-05-12 11:01:12,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:12,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:12,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-05-12 11:01:12,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:13,051 INFO L124 PetriNetUnfolderBase]: 1897/3178 cut-off events. [2024-05-12 11:01:13,051 INFO L125 PetriNetUnfolderBase]: For 3113/3133 co-relation queries the response was YES. [2024-05-12 11:01:13,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8817 conditions, 3178 events. 1897/3178 cut-off events. For 3113/3133 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 17523 event pairs, 672 based on Foata normal form. 123/3229 useless extension candidates. Maximal degree in co-relation 8789. Up to 1869 conditions per place. [2024-05-12 11:01:13,068 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 79 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2024-05-12 11:01:13,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 91 transitions, 525 flow [2024-05-12 11:01:13,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 11:01:13,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 11:01:13,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-05-12 11:01:13,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5987654320987654 [2024-05-12 11:01:13,070 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 291 flow. Second operand 3 states and 97 transitions. [2024-05-12 11:01:13,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 91 transitions, 525 flow [2024-05-12 11:01:13,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 91 transitions, 502 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-05-12 11:01:13,075 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 279 flow [2024-05-12 11:01:13,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2024-05-12 11:01:13,076 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 16 predicate places. [2024-05-12 11:01:13,076 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 279 flow [2024-05-12 11:01:13,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:13,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:13,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:13,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 11:01:13,077 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:13,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:13,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1874311774, now seen corresponding path program 4 times [2024-05-12 11:01:13,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:13,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012154850] [2024-05-12 11:01:13,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:13,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:13,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:13,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:13,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012154850] [2024-05-12 11:01:13,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012154850] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:13,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:13,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:13,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093425631] [2024-05-12 11:01:13,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:13,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:13,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:13,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:13,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:13,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:13,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 279 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:13,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:13,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:13,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:14,486 INFO L124 PetriNetUnfolderBase]: 2442/4066 cut-off events. [2024-05-12 11:01:14,486 INFO L125 PetriNetUnfolderBase]: For 3130/3130 co-relation queries the response was YES. [2024-05-12 11:01:14,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11125 conditions, 4066 events. 2442/4066 cut-off events. For 3130/3130 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 23422 event pairs, 512 based on Foata normal form. 1/3968 useless extension candidates. Maximal degree in co-relation 11097. Up to 2798 conditions per place. [2024-05-12 11:01:14,512 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 125 selfloop transitions, 29 changer transitions 4/165 dead transitions. [2024-05-12 11:01:14,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 165 transitions, 939 flow [2024-05-12 11:01:14,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:01:14,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:01:14,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 284 transitions. [2024-05-12 11:01:14,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4781144781144781 [2024-05-12 11:01:14,514 INFO L175 Difference]: Start difference. First operand has 69 places, 72 transitions, 279 flow. Second operand 11 states and 284 transitions. [2024-05-12 11:01:14,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 165 transitions, 939 flow [2024-05-12 11:01:14,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 165 transitions, 920 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-05-12 11:01:14,518 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 448 flow [2024-05-12 11:01:14,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=448, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2024-05-12 11:01:14,519 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 30 predicate places. [2024-05-12 11:01:14,519 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 448 flow [2024-05-12 11:01:14,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:14,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:14,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:14,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 11:01:14,520 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:14,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:14,520 INFO L85 PathProgramCache]: Analyzing trace with hash 928212462, now seen corresponding path program 5 times [2024-05-12 11:01:14,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:14,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945810693] [2024-05-12 11:01:14,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:14,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:15,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:15,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945810693] [2024-05-12 11:01:15,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945810693] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:15,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:15,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:15,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9049681] [2024-05-12 11:01:15,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:15,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:15,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:15,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:15,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:15,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:15,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 448 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:15,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:15,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:15,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:15,918 INFO L124 PetriNetUnfolderBase]: 2599/4463 cut-off events. [2024-05-12 11:01:15,918 INFO L125 PetriNetUnfolderBase]: For 5919/5919 co-relation queries the response was YES. [2024-05-12 11:01:15,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13133 conditions, 4463 events. 2599/4463 cut-off events. For 5919/5919 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 27118 event pairs, 811 based on Foata normal form. 1/4330 useless extension candidates. Maximal degree in co-relation 13099. Up to 3099 conditions per place. [2024-05-12 11:01:15,942 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 128 selfloop transitions, 34 changer transitions 4/173 dead transitions. [2024-05-12 11:01:15,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 173 transitions, 1120 flow [2024-05-12 11:01:15,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:01:15,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:01:15,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-05-12 11:01:15,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4730639730639731 [2024-05-12 11:01:15,944 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 448 flow. Second operand 11 states and 281 transitions. [2024-05-12 11:01:15,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 173 transitions, 1120 flow [2024-05-12 11:01:15,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 173 transitions, 1089 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-05-12 11:01:15,952 INFO L231 Difference]: Finished difference. Result has 98 places, 102 transitions, 643 flow [2024-05-12 11:01:15,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=643, PETRI_PLACES=98, PETRI_TRANSITIONS=102} [2024-05-12 11:01:15,953 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2024-05-12 11:01:15,953 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 102 transitions, 643 flow [2024-05-12 11:01:15,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:15,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:15,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:15,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 11:01:15,954 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:15,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:15,954 INFO L85 PathProgramCache]: Analyzing trace with hash -934749238, now seen corresponding path program 6 times [2024-05-12 11:01:15,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:15,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065338434] [2024-05-12 11:01:15,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:15,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:16,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:16,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:16,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065338434] [2024-05-12 11:01:16,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065338434] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:16,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:16,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:16,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197007603] [2024-05-12 11:01:16,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:16,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:16,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:16,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:16,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:16,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:16,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 102 transitions, 643 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:16,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:16,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:16,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:17,570 INFO L124 PetriNetUnfolderBase]: 2804/4855 cut-off events. [2024-05-12 11:01:17,571 INFO L125 PetriNetUnfolderBase]: For 9040/9040 co-relation queries the response was YES. [2024-05-12 11:01:17,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15374 conditions, 4855 events. 2804/4855 cut-off events. For 9040/9040 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 30433 event pairs, 532 based on Foata normal form. 1/4719 useless extension candidates. Maximal degree in co-relation 15332. Up to 3198 conditions per place. [2024-05-12 11:01:17,610 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 147 selfloop transitions, 41 changer transitions 4/199 dead transitions. [2024-05-12 11:01:17,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 199 transitions, 1378 flow [2024-05-12 11:01:17,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 11:01:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 11:01:17,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 312 transitions. [2024-05-12 11:01:17,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-05-12 11:01:17,612 INFO L175 Difference]: Start difference. First operand has 98 places, 102 transitions, 643 flow. Second operand 12 states and 312 transitions. [2024-05-12 11:01:17,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 199 transitions, 1378 flow [2024-05-12 11:01:17,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 199 transitions, 1346 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-05-12 11:01:17,630 INFO L231 Difference]: Finished difference. Result has 111 places, 108 transitions, 768 flow [2024-05-12 11:01:17,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=768, PETRI_PLACES=111, PETRI_TRANSITIONS=108} [2024-05-12 11:01:17,631 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 58 predicate places. [2024-05-12 11:01:17,631 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 108 transitions, 768 flow [2024-05-12 11:01:17,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:17,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:17,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:17,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 11:01:17,632 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:17,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:17,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1280224092, now seen corresponding path program 7 times [2024-05-12 11:01:17,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:17,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360878088] [2024-05-12 11:01:17,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:17,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:18,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:18,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:18,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360878088] [2024-05-12 11:01:18,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360878088] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:18,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:18,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:18,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602716010] [2024-05-12 11:01:18,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:18,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:18,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:18,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:18,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:18,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:18,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 108 transitions, 768 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:18,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:18,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:18,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:19,159 INFO L124 PetriNetUnfolderBase]: 2804/4853 cut-off events. [2024-05-12 11:01:19,160 INFO L125 PetriNetUnfolderBase]: For 12606/12626 co-relation queries the response was YES. [2024-05-12 11:01:19,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16198 conditions, 4853 events. 2804/4853 cut-off events. For 12606/12626 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 30446 event pairs, 566 based on Foata normal form. 21/4732 useless extension candidates. Maximal degree in co-relation 16152. Up to 3347 conditions per place. [2024-05-12 11:01:19,185 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 142 selfloop transitions, 40 changer transitions 4/193 dead transitions. [2024-05-12 11:01:19,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 193 transitions, 1450 flow [2024-05-12 11:01:19,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 11:01:19,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 11:01:19,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 302 transitions. [2024-05-12 11:01:19,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660493827160494 [2024-05-12 11:01:19,187 INFO L175 Difference]: Start difference. First operand has 111 places, 108 transitions, 768 flow. Second operand 12 states and 302 transitions. [2024-05-12 11:01:19,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 193 transitions, 1450 flow [2024-05-12 11:01:19,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 193 transitions, 1357 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-05-12 11:01:19,204 INFO L231 Difference]: Finished difference. Result has 117 places, 111 transitions, 800 flow [2024-05-12 11:01:19,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=800, PETRI_PLACES=117, PETRI_TRANSITIONS=111} [2024-05-12 11:01:19,205 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2024-05-12 11:01:19,205 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 111 transitions, 800 flow [2024-05-12 11:01:19,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:19,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:19,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:19,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 11:01:19,206 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:19,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:19,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1359662138, now seen corresponding path program 8 times [2024-05-12 11:01:19,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:19,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554500304] [2024-05-12 11:01:19,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:19,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:19,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:19,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554500304] [2024-05-12 11:01:19,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554500304] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:19,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:19,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:19,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377820267] [2024-05-12 11:01:19,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:19,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:19,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:19,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:19,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:20,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:20,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 111 transitions, 800 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:20,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:20,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:20,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:20,929 INFO L124 PetriNetUnfolderBase]: 3029/5200 cut-off events. [2024-05-12 11:01:20,929 INFO L125 PetriNetUnfolderBase]: For 14458/14478 co-relation queries the response was YES. [2024-05-12 11:01:20,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17781 conditions, 5200 events. 3029/5200 cut-off events. For 14458/14478 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 32935 event pairs, 585 based on Foata normal form. 6/5051 useless extension candidates. Maximal degree in co-relation 17732. Up to 3226 conditions per place. [2024-05-12 11:01:20,964 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 157 selfloop transitions, 48 changer transitions 4/216 dead transitions. [2024-05-12 11:01:20,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 216 transitions, 1643 flow [2024-05-12 11:01:20,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 11:01:20,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 11:01:20,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 319 transitions. [2024-05-12 11:01:20,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49228395061728397 [2024-05-12 11:01:20,966 INFO L175 Difference]: Start difference. First operand has 117 places, 111 transitions, 800 flow. Second operand 12 states and 319 transitions. [2024-05-12 11:01:20,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 216 transitions, 1643 flow [2024-05-12 11:01:20,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 216 transitions, 1553 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-05-12 11:01:20,996 INFO L231 Difference]: Finished difference. Result has 123 places, 119 transitions, 925 flow [2024-05-12 11:01:20,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=925, PETRI_PLACES=123, PETRI_TRANSITIONS=119} [2024-05-12 11:01:20,997 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 70 predicate places. [2024-05-12 11:01:20,997 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 119 transitions, 925 flow [2024-05-12 11:01:20,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:20,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:20,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:20,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 11:01:20,998 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:20,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:20,998 INFO L85 PathProgramCache]: Analyzing trace with hash -205138836, now seen corresponding path program 9 times [2024-05-12 11:01:20,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:20,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258793770] [2024-05-12 11:01:20,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:20,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:21,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:21,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:21,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258793770] [2024-05-12 11:01:21,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258793770] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:21,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:21,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:21,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578580339] [2024-05-12 11:01:21,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:21,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:21,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:21,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:21,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:21,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:21,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 119 transitions, 925 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:21,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:21,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:21,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:22,723 INFO L124 PetriNetUnfolderBase]: 3272/5683 cut-off events. [2024-05-12 11:01:22,723 INFO L125 PetriNetUnfolderBase]: For 20555/20575 co-relation queries the response was YES. [2024-05-12 11:01:22,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20305 conditions, 5683 events. 3272/5683 cut-off events. For 20555/20575 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 36970 event pairs, 992 based on Foata normal form. 6/5520 useless extension candidates. Maximal degree in co-relation 20252. Up to 4186 conditions per place. [2024-05-12 11:01:22,761 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 154 selfloop transitions, 36 changer transitions 4/201 dead transitions. [2024-05-12 11:01:22,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 201 transitions, 1702 flow [2024-05-12 11:01:22,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:01:22,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:01:22,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-05-12 11:01:22,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-05-12 11:01:22,763 INFO L175 Difference]: Start difference. First operand has 123 places, 119 transitions, 925 flow. Second operand 11 states and 279 transitions. [2024-05-12 11:01:22,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 201 transitions, 1702 flow [2024-05-12 11:01:22,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 201 transitions, 1597 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-05-12 11:01:22,800 INFO L231 Difference]: Finished difference. Result has 131 places, 128 transitions, 1039 flow [2024-05-12 11:01:22,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1039, PETRI_PLACES=131, PETRI_TRANSITIONS=128} [2024-05-12 11:01:22,802 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 78 predicate places. [2024-05-12 11:01:22,802 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 128 transitions, 1039 flow [2024-05-12 11:01:22,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:22,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:22,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:22,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 11:01:22,803 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:22,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:22,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1484374316, now seen corresponding path program 10 times [2024-05-12 11:01:22,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:22,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5870884] [2024-05-12 11:01:22,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:22,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:23,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:23,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:23,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5870884] [2024-05-12 11:01:23,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5870884] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:23,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:23,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:23,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835923925] [2024-05-12 11:01:23,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:23,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:23,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:23,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:23,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:23,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:23,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 128 transitions, 1039 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:23,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:23,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:23,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:24,422 INFO L124 PetriNetUnfolderBase]: 3505/6122 cut-off events. [2024-05-12 11:01:24,422 INFO L125 PetriNetUnfolderBase]: For 31825/31857 co-relation queries the response was YES. [2024-05-12 11:01:24,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23098 conditions, 6122 events. 3505/6122 cut-off events. For 31825/31857 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 41199 event pairs, 1096 based on Foata normal form. 9/5954 useless extension candidates. Maximal degree in co-relation 23040. Up to 4540 conditions per place. [2024-05-12 11:01:24,596 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 166 selfloop transitions, 36 changer transitions 4/213 dead transitions. [2024-05-12 11:01:24,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 213 transitions, 1886 flow [2024-05-12 11:01:24,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:01:24,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:01:24,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-05-12 11:01:24,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2024-05-12 11:01:24,598 INFO L175 Difference]: Start difference. First operand has 131 places, 128 transitions, 1039 flow. Second operand 11 states and 282 transitions. [2024-05-12 11:01:24,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 213 transitions, 1886 flow [2024-05-12 11:01:24,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 213 transitions, 1774 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-05-12 11:01:24,654 INFO L231 Difference]: Finished difference. Result has 139 places, 137 transitions, 1143 flow [2024-05-12 11:01:24,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1143, PETRI_PLACES=139, PETRI_TRANSITIONS=137} [2024-05-12 11:01:24,655 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 86 predicate places. [2024-05-12 11:01:24,656 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 137 transitions, 1143 flow [2024-05-12 11:01:24,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:24,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:24,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:24,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 11:01:24,657 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:24,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:24,657 INFO L85 PathProgramCache]: Analyzing trace with hash -759388732, now seen corresponding path program 11 times [2024-05-12 11:01:24,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:24,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141578162] [2024-05-12 11:01:24,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:24,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:25,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:25,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:25,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141578162] [2024-05-12 11:01:25,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141578162] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:25,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:25,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:25,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299181452] [2024-05-12 11:01:25,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:25,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:25,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:25,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:25,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:25,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:25,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 137 transitions, 1143 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:25,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:25,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:25,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:26,292 INFO L124 PetriNetUnfolderBase]: 3792/6582 cut-off events. [2024-05-12 11:01:26,292 INFO L125 PetriNetUnfolderBase]: For 41689/41775 co-relation queries the response was YES. [2024-05-12 11:01:26,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25930 conditions, 6582 events. 3792/6582 cut-off events. For 41689/41775 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 44867 event pairs, 1181 based on Foata normal form. 6/6386 useless extension candidates. Maximal degree in co-relation 25868. Up to 4900 conditions per place. [2024-05-12 11:01:26,339 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 172 selfloop transitions, 37 changer transitions 4/220 dead transitions. [2024-05-12 11:01:26,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 220 transitions, 2025 flow [2024-05-12 11:01:26,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:01:26,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:01:26,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2024-05-12 11:01:26,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4764309764309764 [2024-05-12 11:01:26,341 INFO L175 Difference]: Start difference. First operand has 139 places, 137 transitions, 1143 flow. Second operand 11 states and 283 transitions. [2024-05-12 11:01:26,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 220 transitions, 2025 flow [2024-05-12 11:01:26,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 220 transitions, 1893 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-05-12 11:01:26,413 INFO L231 Difference]: Finished difference. Result has 147 places, 144 transitions, 1233 flow [2024-05-12 11:01:26,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1233, PETRI_PLACES=147, PETRI_TRANSITIONS=144} [2024-05-12 11:01:26,414 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 94 predicate places. [2024-05-12 11:01:26,414 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 144 transitions, 1233 flow [2024-05-12 11:01:26,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:26,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:26,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:26,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 11:01:26,414 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:26,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:26,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1171713790, now seen corresponding path program 12 times [2024-05-12 11:01:26,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:26,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352051313] [2024-05-12 11:01:26,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:26,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:26,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:26,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:26,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352051313] [2024-05-12 11:01:26,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352051313] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:26,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:26,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:26,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564741242] [2024-05-12 11:01:26,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:26,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:26,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:26,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:26,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:27,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:27,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 144 transitions, 1233 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:27,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:27,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:27,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:28,037 INFO L124 PetriNetUnfolderBase]: 3898/6766 cut-off events. [2024-05-12 11:01:28,038 INFO L125 PetriNetUnfolderBase]: For 51040/51204 co-relation queries the response was YES. [2024-05-12 11:01:28,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27167 conditions, 6766 events. 3898/6766 cut-off events. For 51040/51204 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 46400 event pairs, 1331 based on Foata normal form. 27/6585 useless extension candidates. Maximal degree in co-relation 27101. Up to 5304 conditions per place. [2024-05-12 11:01:28,087 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 164 selfloop transitions, 36 changer transitions 5/212 dead transitions. [2024-05-12 11:01:28,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 212 transitions, 1963 flow [2024-05-12 11:01:28,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:01:28,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:01:28,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 268 transitions. [2024-05-12 11:01:28,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511784511784512 [2024-05-12 11:01:28,089 INFO L175 Difference]: Start difference. First operand has 147 places, 144 transitions, 1233 flow. Second operand 11 states and 268 transitions. [2024-05-12 11:01:28,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 212 transitions, 1963 flow [2024-05-12 11:01:28,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 212 transitions, 1835 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-05-12 11:01:28,156 INFO L231 Difference]: Finished difference. Result has 154 places, 150 transitions, 1272 flow [2024-05-12 11:01:28,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1272, PETRI_PLACES=154, PETRI_TRANSITIONS=150} [2024-05-12 11:01:28,157 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 101 predicate places. [2024-05-12 11:01:28,157 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 150 transitions, 1272 flow [2024-05-12 11:01:28,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:28,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:28,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:28,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 11:01:28,158 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:28,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:28,158 INFO L85 PathProgramCache]: Analyzing trace with hash -51422860, now seen corresponding path program 13 times [2024-05-12 11:01:28,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:28,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034555056] [2024-05-12 11:01:28,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:28,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:28,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:28,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034555056] [2024-05-12 11:01:28,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034555056] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:28,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:28,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:28,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534905789] [2024-05-12 11:01:28,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:28,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:28,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:28,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:28,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:28,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:28,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 150 transitions, 1272 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:28,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:28,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:28,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:30,003 INFO L124 PetriNetUnfolderBase]: 4160/7178 cut-off events. [2024-05-12 11:01:30,004 INFO L125 PetriNetUnfolderBase]: For 53307/53399 co-relation queries the response was YES. [2024-05-12 11:01:30,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28859 conditions, 7178 events. 4160/7178 cut-off events. For 53307/53399 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 49677 event pairs, 1372 based on Foata normal form. 36/7015 useless extension candidates. Maximal degree in co-relation 28789. Up to 5343 conditions per place. [2024-05-12 11:01:30,051 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 177 selfloop transitions, 42 changer transitions 4/230 dead transitions. [2024-05-12 11:01:30,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 230 transitions, 2186 flow [2024-05-12 11:01:30,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:01:30,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:01:30,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-05-12 11:01:30,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4730639730639731 [2024-05-12 11:01:30,053 INFO L175 Difference]: Start difference. First operand has 154 places, 150 transitions, 1272 flow. Second operand 11 states and 281 transitions. [2024-05-12 11:01:30,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 230 transitions, 2186 flow [2024-05-12 11:01:30,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 230 transitions, 2078 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-05-12 11:01:30,127 INFO L231 Difference]: Finished difference. Result has 161 places, 157 transitions, 1429 flow [2024-05-12 11:01:30,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1429, PETRI_PLACES=161, PETRI_TRANSITIONS=157} [2024-05-12 11:01:30,128 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 108 predicate places. [2024-05-12 11:01:30,128 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 157 transitions, 1429 flow [2024-05-12 11:01:30,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:30,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:30,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:30,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 11:01:30,129 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:30,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:30,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2093992066, now seen corresponding path program 14 times [2024-05-12 11:01:30,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:30,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935089145] [2024-05-12 11:01:30,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:30,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:30,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:30,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935089145] [2024-05-12 11:01:30,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935089145] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:30,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:30,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:30,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960354397] [2024-05-12 11:01:30,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:30,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:30,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:30,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:30,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:30,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:30,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 157 transitions, 1429 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:30,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:30,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:30,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:31,980 INFO L124 PetriNetUnfolderBase]: 4575/7922 cut-off events. [2024-05-12 11:01:31,980 INFO L125 PetriNetUnfolderBase]: For 78080/78148 co-relation queries the response was YES. [2024-05-12 11:01:32,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34279 conditions, 7922 events. 4575/7922 cut-off events. For 78080/78148 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 55943 event pairs, 1550 based on Foata normal form. 12/7723 useless extension candidates. Maximal degree in co-relation 34205. Up to 5800 conditions per place. [2024-05-12 11:01:32,047 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 207 selfloop transitions, 44 changer transitions 4/262 dead transitions. [2024-05-12 11:01:32,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 262 transitions, 2618 flow [2024-05-12 11:01:32,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 11:01:32,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 11:01:32,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 315 transitions. [2024-05-12 11:01:32,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-05-12 11:01:32,056 INFO L175 Difference]: Start difference. First operand has 161 places, 157 transitions, 1429 flow. Second operand 12 states and 315 transitions. [2024-05-12 11:01:32,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 262 transitions, 2618 flow [2024-05-12 11:01:32,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 262 transitions, 2452 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-05-12 11:01:32,189 INFO L231 Difference]: Finished difference. Result has 170 places, 169 transitions, 1618 flow [2024-05-12 11:01:32,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1275, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1618, PETRI_PLACES=170, PETRI_TRANSITIONS=169} [2024-05-12 11:01:32,190 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 117 predicate places. [2024-05-12 11:01:32,190 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 169 transitions, 1618 flow [2024-05-12 11:01:32,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:32,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:32,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:32,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 11:01:32,191 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:32,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:32,191 INFO L85 PathProgramCache]: Analyzing trace with hash 7490888, now seen corresponding path program 15 times [2024-05-12 11:01:32,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:32,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95798153] [2024-05-12 11:01:32,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:32,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:32,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:32,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:32,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95798153] [2024-05-12 11:01:32,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95798153] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:32,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:32,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:32,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570221145] [2024-05-12 11:01:32,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:32,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:32,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:32,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:32,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:32,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:32,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 169 transitions, 1618 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:32,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:32,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:32,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:34,191 INFO L124 PetriNetUnfolderBase]: 4915/8536 cut-off events. [2024-05-12 11:01:34,192 INFO L125 PetriNetUnfolderBase]: For 95220/95393 co-relation queries the response was YES. [2024-05-12 11:01:34,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37867 conditions, 8536 events. 4915/8536 cut-off events. For 95220/95393 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 61871 event pairs, 1522 based on Foata normal form. 57/8372 useless extension candidates. Maximal degree in co-relation 37788. Up to 6119 conditions per place. [2024-05-12 11:01:34,263 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 203 selfloop transitions, 51 changer transitions 4/265 dead transitions. [2024-05-12 11:01:34,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 265 transitions, 2825 flow [2024-05-12 11:01:34,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 11:01:34,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 11:01:34,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 309 transitions. [2024-05-12 11:01:34,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47685185185185186 [2024-05-12 11:01:34,265 INFO L175 Difference]: Start difference. First operand has 170 places, 169 transitions, 1618 flow. Second operand 12 states and 309 transitions. [2024-05-12 11:01:34,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 265 transitions, 2825 flow [2024-05-12 11:01:34,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 265 transitions, 2591 flow, removed 100 selfloop flow, removed 5 redundant places. [2024-05-12 11:01:34,388 INFO L231 Difference]: Finished difference. Result has 180 places, 180 transitions, 1773 flow [2024-05-12 11:01:34,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1773, PETRI_PLACES=180, PETRI_TRANSITIONS=180} [2024-05-12 11:01:34,388 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 127 predicate places. [2024-05-12 11:01:34,389 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 180 transitions, 1773 flow [2024-05-12 11:01:34,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:34,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:34,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:34,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 11:01:34,389 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:34,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:34,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1196442426, now seen corresponding path program 16 times [2024-05-12 11:01:34,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:34,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071870410] [2024-05-12 11:01:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:34,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:34,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:34,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071870410] [2024-05-12 11:01:34,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071870410] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:34,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:34,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:34,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357551675] [2024-05-12 11:01:34,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:34,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:34,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:34,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:34,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:34,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:34,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 180 transitions, 1773 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:34,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:34,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:34,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:36,211 INFO L124 PetriNetUnfolderBase]: 4982/8670 cut-off events. [2024-05-12 11:01:36,211 INFO L125 PetriNetUnfolderBase]: For 108745/109050 co-relation queries the response was YES. [2024-05-12 11:01:36,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38517 conditions, 8670 events. 4982/8670 cut-off events. For 108745/109050 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 63072 event pairs, 1915 based on Foata normal form. 69/8484 useless extension candidates. Maximal degree in co-relation 38433. Up to 7034 conditions per place. [2024-05-12 11:01:36,283 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 197 selfloop transitions, 35 changer transitions 4/243 dead transitions. [2024-05-12 11:01:36,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 243 transitions, 2522 flow [2024-05-12 11:01:36,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:01:36,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:01:36,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2024-05-12 11:01:36,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478114478114478 [2024-05-12 11:01:36,301 INFO L175 Difference]: Start difference. First operand has 180 places, 180 transitions, 1773 flow. Second operand 11 states and 266 transitions. [2024-05-12 11:01:36,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 243 transitions, 2522 flow [2024-05-12 11:01:36,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 243 transitions, 2329 flow, removed 72 selfloop flow, removed 7 redundant places. [2024-05-12 11:01:36,410 INFO L231 Difference]: Finished difference. Result has 185 places, 182 transitions, 1671 flow [2024-05-12 11:01:36,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1671, PETRI_PLACES=185, PETRI_TRANSITIONS=182} [2024-05-12 11:01:36,411 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 132 predicate places. [2024-05-12 11:01:36,411 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 182 transitions, 1671 flow [2024-05-12 11:01:36,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:36,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:36,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:36,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 11:01:36,413 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:36,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:36,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1307338588, now seen corresponding path program 17 times [2024-05-12 11:01:36,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:36,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291461054] [2024-05-12 11:01:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:36,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:36,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:36,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:36,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291461054] [2024-05-12 11:01:36,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291461054] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:36,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:36,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:36,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238079176] [2024-05-12 11:01:36,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:36,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:36,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:36,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:36,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:36,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:36,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 182 transitions, 1671 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:36,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:36,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:36,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:38,271 INFO L124 PetriNetUnfolderBase]: 4982/8668 cut-off events. [2024-05-12 11:01:38,272 INFO L125 PetriNetUnfolderBase]: For 92722/92871 co-relation queries the response was YES. [2024-05-12 11:01:38,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37428 conditions, 8668 events. 4982/8668 cut-off events. For 92722/92871 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 63112 event pairs, 1886 based on Foata normal form. 45/8467 useless extension candidates. Maximal degree in co-relation 37342. Up to 6914 conditions per place. [2024-05-12 11:01:38,352 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 205 selfloop transitions, 37 changer transitions 5/254 dead transitions. [2024-05-12 11:01:38,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 254 transitions, 2554 flow [2024-05-12 11:01:38,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:01:38,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:01:38,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 275 transitions. [2024-05-12 11:01:38,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-05-12 11:01:38,353 INFO L175 Difference]: Start difference. First operand has 185 places, 182 transitions, 1671 flow. Second operand 11 states and 275 transitions. [2024-05-12 11:01:38,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 254 transitions, 2554 flow [2024-05-12 11:01:38,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 254 transitions, 2488 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-05-12 11:01:38,476 INFO L231 Difference]: Finished difference. Result has 189 places, 186 transitions, 1746 flow [2024-05-12 11:01:38,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1746, PETRI_PLACES=189, PETRI_TRANSITIONS=186} [2024-05-12 11:01:38,476 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 136 predicate places. [2024-05-12 11:01:38,477 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 186 transitions, 1746 flow [2024-05-12 11:01:38,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:38,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:38,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:38,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 11:01:38,477 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:38,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:38,478 INFO L85 PathProgramCache]: Analyzing trace with hash -780078622, now seen corresponding path program 18 times [2024-05-12 11:01:38,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:38,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625297111] [2024-05-12 11:01:38,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:38,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:39,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:39,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:39,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625297111] [2024-05-12 11:01:39,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625297111] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:39,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:39,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:39,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667144771] [2024-05-12 11:01:39,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:39,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:39,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:39,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:39,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:39,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:39,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 186 transitions, 1746 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:39,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:39,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:39,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:40,530 INFO L124 PetriNetUnfolderBase]: 4982/8663 cut-off events. [2024-05-12 11:01:40,530 INFO L125 PetriNetUnfolderBase]: For 97575/97796 co-relation queries the response was YES. [2024-05-12 11:01:40,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37660 conditions, 8663 events. 4982/8663 cut-off events. For 97575/97796 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 63112 event pairs, 1883 based on Foata normal form. 81/8494 useless extension candidates. Maximal degree in co-relation 37572. Up to 7007 conditions per place. [2024-05-12 11:01:40,611 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 204 selfloop transitions, 38 changer transitions 4/253 dead transitions. [2024-05-12 11:01:40,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 253 transitions, 2556 flow [2024-05-12 11:01:40,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:01:40,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:01:40,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 270 transitions. [2024-05-12 11:01:40,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-05-12 11:01:40,613 INFO L175 Difference]: Start difference. First operand has 189 places, 186 transitions, 1746 flow. Second operand 11 states and 270 transitions. [2024-05-12 11:01:40,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 253 transitions, 2556 flow [2024-05-12 11:01:40,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 253 transitions, 2446 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-05-12 11:01:40,740 INFO L231 Difference]: Finished difference. Result has 193 places, 189 transitions, 1771 flow [2024-05-12 11:01:40,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1771, PETRI_PLACES=193, PETRI_TRANSITIONS=189} [2024-05-12 11:01:40,740 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 140 predicate places. [2024-05-12 11:01:40,741 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 189 transitions, 1771 flow [2024-05-12 11:01:40,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:40,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:40,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:40,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 11:01:40,741 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:40,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:40,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1948466334, now seen corresponding path program 19 times [2024-05-12 11:01:40,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:40,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307583536] [2024-05-12 11:01:40,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:40,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:41,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:41,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:41,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307583536] [2024-05-12 11:01:41,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307583536] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:41,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:41,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:41,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994566840] [2024-05-12 11:01:41,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:41,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:41,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:41,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:41,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:41,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:41,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 189 transitions, 1771 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:41,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:41,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:41,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:42,526 INFO L124 PetriNetUnfolderBase]: 4982/8679 cut-off events. [2024-05-12 11:01:42,526 INFO L125 PetriNetUnfolderBase]: For 96997/97218 co-relation queries the response was YES. [2024-05-12 11:01:42,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37540 conditions, 8679 events. 4982/8679 cut-off events. For 96997/97218 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 63381 event pairs, 1834 based on Foata normal form. 81/8517 useless extension candidates. Maximal degree in co-relation 37450. Up to 6906 conditions per place. [2024-05-12 11:01:42,610 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 206 selfloop transitions, 41 changer transitions 5/259 dead transitions. [2024-05-12 11:01:42,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 259 transitions, 2616 flow [2024-05-12 11:01:42,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:01:42,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:01:42,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 274 transitions. [2024-05-12 11:01:42,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612794612794613 [2024-05-12 11:01:42,611 INFO L175 Difference]: Start difference. First operand has 193 places, 189 transitions, 1771 flow. Second operand 11 states and 274 transitions. [2024-05-12 11:01:42,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 259 transitions, 2616 flow [2024-05-12 11:01:42,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 259 transitions, 2502 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-05-12 11:01:42,750 INFO L231 Difference]: Finished difference. Result has 197 places, 193 transitions, 1809 flow [2024-05-12 11:01:42,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1657, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1809, PETRI_PLACES=197, PETRI_TRANSITIONS=193} [2024-05-12 11:01:42,751 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 144 predicate places. [2024-05-12 11:01:42,751 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 193 transitions, 1809 flow [2024-05-12 11:01:42,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:42,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:42,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:42,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 11:01:42,752 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:42,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:42,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1111300566, now seen corresponding path program 20 times [2024-05-12 11:01:42,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:42,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775081739] [2024-05-12 11:01:42,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:42,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:43,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:43,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:43,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775081739] [2024-05-12 11:01:43,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775081739] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:43,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:43,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:43,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143351539] [2024-05-12 11:01:43,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:43,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:43,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:43,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:43,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:43,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:43,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 193 transitions, 1809 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:43,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:43,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:43,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:44,659 INFO L124 PetriNetUnfolderBase]: 5157/8989 cut-off events. [2024-05-12 11:01:44,660 INFO L125 PetriNetUnfolderBase]: For 104587/104682 co-relation queries the response was YES. [2024-05-12 11:01:44,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39794 conditions, 8989 events. 5157/8989 cut-off events. For 104587/104682 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 65760 event pairs, 1818 based on Foata normal form. 21/8773 useless extension candidates. Maximal degree in co-relation 39702. Up to 6697 conditions per place. [2024-05-12 11:01:44,749 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 224 selfloop transitions, 49 changer transitions 4/284 dead transitions. [2024-05-12 11:01:44,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 284 transitions, 2951 flow [2024-05-12 11:01:44,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 11:01:44,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 11:01:44,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 308 transitions. [2024-05-12 11:01:44,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-05-12 11:01:44,758 INFO L175 Difference]: Start difference. First operand has 197 places, 193 transitions, 1809 flow. Second operand 12 states and 308 transitions. [2024-05-12 11:01:44,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 284 transitions, 2951 flow [2024-05-12 11:01:44,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 284 transitions, 2821 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-05-12 11:01:44,896 INFO L231 Difference]: Finished difference. Result has 203 places, 199 transitions, 1939 flow [2024-05-12 11:01:44,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1939, PETRI_PLACES=203, PETRI_TRANSITIONS=199} [2024-05-12 11:01:44,896 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 150 predicate places. [2024-05-12 11:01:44,896 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 199 transitions, 1939 flow [2024-05-12 11:01:44,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:44,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:44,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:44,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 11:01:44,897 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:44,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:44,898 INFO L85 PathProgramCache]: Analyzing trace with hash 903170736, now seen corresponding path program 21 times [2024-05-12 11:01:44,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:44,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684442030] [2024-05-12 11:01:44,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:44,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:45,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:45,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:45,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684442030] [2024-05-12 11:01:45,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684442030] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:45,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:45,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:45,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408894948] [2024-05-12 11:01:45,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:45,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:45,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:45,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:45,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:45,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:45,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 199 transitions, 1939 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:45,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:45,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:45,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:46,857 INFO L124 PetriNetUnfolderBase]: 5157/9015 cut-off events. [2024-05-12 11:01:46,858 INFO L125 PetriNetUnfolderBase]: For 112915/113010 co-relation queries the response was YES. [2024-05-12 11:01:46,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40480 conditions, 9015 events. 5157/9015 cut-off events. For 112915/113010 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 66203 event pairs, 1872 based on Foata normal form. 45/8821 useless extension candidates. Maximal degree in co-relation 40385. Up to 6852 conditions per place. [2024-05-12 11:01:46,949 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 217 selfloop transitions, 51 changer transitions 5/280 dead transitions. [2024-05-12 11:01:46,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 280 transitions, 2951 flow [2024-05-12 11:01:46,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 11:01:46,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 11:01:46,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 301 transitions. [2024-05-12 11:01:46,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645061728395062 [2024-05-12 11:01:46,950 INFO L175 Difference]: Start difference. First operand has 203 places, 199 transitions, 1939 flow. Second operand 12 states and 301 transitions. [2024-05-12 11:01:46,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 280 transitions, 2951 flow [2024-05-12 11:01:47,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 280 transitions, 2800 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-05-12 11:01:47,114 INFO L231 Difference]: Finished difference. Result has 208 places, 203 transitions, 1968 flow [2024-05-12 11:01:47,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1788, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1968, PETRI_PLACES=208, PETRI_TRANSITIONS=203} [2024-05-12 11:01:47,115 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 155 predicate places. [2024-05-12 11:01:47,115 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 203 transitions, 1968 flow [2024-05-12 11:01:47,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:47,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:47,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:47,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 11:01:47,116 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:47,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:47,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1425350158, now seen corresponding path program 22 times [2024-05-12 11:01:47,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:47,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136612904] [2024-05-12 11:01:47,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:47,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:47,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:47,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:47,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136612904] [2024-05-12 11:01:47,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136612904] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:47,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:47,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:47,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315259281] [2024-05-12 11:01:47,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:47,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:47,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:47,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:47,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:47,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:47,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 203 transitions, 1968 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:47,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:47,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:47,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:49,159 INFO L124 PetriNetUnfolderBase]: 5390/9409 cut-off events. [2024-05-12 11:01:49,160 INFO L125 PetriNetUnfolderBase]: For 126097/126342 co-relation queries the response was YES. [2024-05-12 11:01:49,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42879 conditions, 9409 events. 5390/9409 cut-off events. For 126097/126342 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 69984 event pairs, 2267 based on Foata normal form. 57/9188 useless extension candidates. Maximal degree in co-relation 42782. Up to 7525 conditions per place. [2024-05-12 11:01:49,253 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 236 selfloop transitions, 36 changer transitions 4/283 dead transitions. [2024-05-12 11:01:49,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 283 transitions, 3245 flow [2024-05-12 11:01:49,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:01:49,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:01:49,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 280 transitions. [2024-05-12 11:01:49,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713804713804714 [2024-05-12 11:01:49,255 INFO L175 Difference]: Start difference. First operand has 208 places, 203 transitions, 1968 flow. Second operand 11 states and 280 transitions. [2024-05-12 11:01:49,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 283 transitions, 3245 flow [2024-05-12 11:01:49,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 283 transitions, 3091 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-05-12 11:01:49,505 INFO L231 Difference]: Finished difference. Result has 213 places, 212 transitions, 2191 flow [2024-05-12 11:01:49,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2191, PETRI_PLACES=213, PETRI_TRANSITIONS=212} [2024-05-12 11:01:49,506 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 160 predicate places. [2024-05-12 11:01:49,506 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 212 transitions, 2191 flow [2024-05-12 11:01:49,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:49,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:49,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:49,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 11:01:49,507 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:49,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:49,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1212407224, now seen corresponding path program 23 times [2024-05-12 11:01:49,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:49,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750578705] [2024-05-12 11:01:49,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:49,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:50,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:50,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:50,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750578705] [2024-05-12 11:01:50,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750578705] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:50,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:50,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:50,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868252014] [2024-05-12 11:01:50,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:50,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:50,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:50,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:50,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:50,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:50,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 212 transitions, 2191 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:50,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:50,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:50,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:51,638 INFO L124 PetriNetUnfolderBase]: 5735/9988 cut-off events. [2024-05-12 11:01:51,639 INFO L125 PetriNetUnfolderBase]: For 176612/177121 co-relation queries the response was YES. [2024-05-12 11:01:51,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48138 conditions, 9988 events. 5735/9988 cut-off events. For 176612/177121 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 75002 event pairs, 2355 based on Foata normal form. 57/9747 useless extension candidates. Maximal degree in co-relation 48037. Up to 7938 conditions per place. [2024-05-12 11:01:51,754 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 248 selfloop transitions, 37 changer transitions 4/296 dead transitions. [2024-05-12 11:01:51,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 296 transitions, 3532 flow [2024-05-12 11:01:51,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:01:51,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:01:51,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 284 transitions. [2024-05-12 11:01:51,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4781144781144781 [2024-05-12 11:01:51,756 INFO L175 Difference]: Start difference. First operand has 213 places, 212 transitions, 2191 flow. Second operand 11 states and 284 transitions. [2024-05-12 11:01:51,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 296 transitions, 3532 flow [2024-05-12 11:01:52,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 296 transitions, 3244 flow, removed 127 selfloop flow, removed 5 redundant places. [2024-05-12 11:01:52,140 INFO L231 Difference]: Finished difference. Result has 222 places, 222 transitions, 2292 flow [2024-05-12 11:01:52,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1939, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2292, PETRI_PLACES=222, PETRI_TRANSITIONS=222} [2024-05-12 11:01:52,141 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 169 predicate places. [2024-05-12 11:01:52,141 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 222 transitions, 2292 flow [2024-05-12 11:01:52,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:52,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:52,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:52,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 11:01:52,142 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:52,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:52,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1656980714, now seen corresponding path program 24 times [2024-05-12 11:01:52,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:52,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621739911] [2024-05-12 11:01:52,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:52,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:52,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:52,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:52,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621739911] [2024-05-12 11:01:52,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621739911] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:52,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:52,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:52,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301143423] [2024-05-12 11:01:52,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:52,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:52,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:52,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:52,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:52,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:52,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 222 transitions, 2292 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:52,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:52,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:52,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:54,304 INFO L124 PetriNetUnfolderBase]: 5841/10184 cut-off events. [2024-05-12 11:01:54,304 INFO L125 PetriNetUnfolderBase]: For 166968/167474 co-relation queries the response was YES. [2024-05-12 11:01:54,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48145 conditions, 10184 events. 5841/10184 cut-off events. For 166968/167474 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 76494 event pairs, 2507 based on Foata normal form. 78/9961 useless extension candidates. Maximal degree in co-relation 48039. Up to 8342 conditions per place. [2024-05-12 11:01:54,400 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 240 selfloop transitions, 36 changer transitions 5/288 dead transitions. [2024-05-12 11:01:54,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 288 transitions, 3318 flow [2024-05-12 11:01:54,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:01:54,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:01:54,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-05-12 11:01:54,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45286195286195285 [2024-05-12 11:01:54,402 INFO L175 Difference]: Start difference. First operand has 222 places, 222 transitions, 2292 flow. Second operand 11 states and 269 transitions. [2024-05-12 11:01:54,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 288 transitions, 3318 flow [2024-05-12 11:01:54,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 288 transitions, 3112 flow, removed 86 selfloop flow, removed 5 redundant places. [2024-05-12 11:01:54,642 INFO L231 Difference]: Finished difference. Result has 230 places, 228 transitions, 2297 flow [2024-05-12 11:01:54,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2086, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2297, PETRI_PLACES=230, PETRI_TRANSITIONS=228} [2024-05-12 11:01:54,643 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 177 predicate places. [2024-05-12 11:01:54,643 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 228 transitions, 2297 flow [2024-05-12 11:01:54,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:54,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:54,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:54,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 11:01:54,644 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:54,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:54,644 INFO L85 PathProgramCache]: Analyzing trace with hash 915372564, now seen corresponding path program 25 times [2024-05-12 11:01:54,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:54,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204122879] [2024-05-12 11:01:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:54,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:55,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:55,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204122879] [2024-05-12 11:01:55,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204122879] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:55,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:55,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:55,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928039332] [2024-05-12 11:01:55,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:55,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:55,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:55,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:55,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:55,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:55,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 228 transitions, 2297 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:55,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:55,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:55,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:57,148 INFO L124 PetriNetUnfolderBase]: 6079/10584 cut-off events. [2024-05-12 11:01:57,148 INFO L125 PetriNetUnfolderBase]: For 163531/163839 co-relation queries the response was YES. [2024-05-12 11:01:57,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49751 conditions, 10584 events. 6079/10584 cut-off events. For 163531/163839 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 80522 event pairs, 2517 based on Foata normal form. 87/10360 useless extension candidates. Maximal degree in co-relation 49641. Up to 8381 conditions per place. [2024-05-12 11:01:57,253 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 253 selfloop transitions, 42 changer transitions 4/306 dead transitions. [2024-05-12 11:01:57,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 306 transitions, 3589 flow [2024-05-12 11:01:57,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:01:57,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:01:57,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-05-12 11:01:57,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2024-05-12 11:01:57,254 INFO L175 Difference]: Start difference. First operand has 230 places, 228 transitions, 2297 flow. Second operand 11 states and 282 transitions. [2024-05-12 11:01:57,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 306 transitions, 3589 flow [2024-05-12 11:01:57,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 306 transitions, 3427 flow, removed 61 selfloop flow, removed 6 redundant places. [2024-05-12 11:01:57,537 INFO L231 Difference]: Finished difference. Result has 237 places, 235 transitions, 2490 flow [2024-05-12 11:01:57,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2135, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2490, PETRI_PLACES=237, PETRI_TRANSITIONS=235} [2024-05-12 11:01:57,538 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 184 predicate places. [2024-05-12 11:01:57,538 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 235 transitions, 2490 flow [2024-05-12 11:01:57,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:57,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:01:57,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:01:57,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 11:01:57,539 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:01:57,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:01:57,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1724799964, now seen corresponding path program 26 times [2024-05-12 11:01:57,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:01:57,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010006511] [2024-05-12 11:01:57,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:01:57,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:01:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:01:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:01:58,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:01:58,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010006511] [2024-05-12 11:01:58,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010006511] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:01:58,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:01:58,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:01:58,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266516257] [2024-05-12 11:01:58,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:01:58,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:01:58,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:01:58,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:01:58,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:01:58,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:01:58,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 235 transitions, 2490 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:01:58,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:01:58,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:01:58,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:01:59,897 INFO L124 PetriNetUnfolderBase]: 6284/10958 cut-off events. [2024-05-12 11:01:59,897 INFO L125 PetriNetUnfolderBase]: For 202987/203304 co-relation queries the response was YES. [2024-05-12 11:01:59,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53373 conditions, 10958 events. 6284/10958 cut-off events. For 202987/203304 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 83708 event pairs, 2676 based on Foata normal form. 72/10712 useless extension candidates. Maximal degree in co-relation 53259. Up to 8901 conditions per place. [2024-05-12 11:02:00,033 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 270 selfloop transitions, 35 changer transitions 4/316 dead transitions. [2024-05-12 11:02:00,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 316 transitions, 3876 flow [2024-05-12 11:02:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:02:00,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:02:00,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2024-05-12 11:02:00,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4764309764309764 [2024-05-12 11:02:00,035 INFO L175 Difference]: Start difference. First operand has 237 places, 235 transitions, 2490 flow. Second operand 11 states and 283 transitions. [2024-05-12 11:02:00,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 316 transitions, 3876 flow [2024-05-12 11:02:00,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 316 transitions, 3634 flow, removed 101 selfloop flow, removed 6 redundant places. [2024-05-12 11:02:00,374 INFO L231 Difference]: Finished difference. Result has 244 places, 241 transitions, 2577 flow [2024-05-12 11:02:00,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2254, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2577, PETRI_PLACES=244, PETRI_TRANSITIONS=241} [2024-05-12 11:02:00,375 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 191 predicate places. [2024-05-12 11:02:00,375 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 241 transitions, 2577 flow [2024-05-12 11:02:00,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:00,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:02:00,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:02:00,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 11:02:00,376 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:02:00,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:02:00,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1881964600, now seen corresponding path program 27 times [2024-05-12 11:02:00,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:02:00,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917843392] [2024-05-12 11:02:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:02:00,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:02:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:02:00,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:02:00,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:02:00,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917843392] [2024-05-12 11:02:00,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917843392] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:02:00,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:02:00,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:02:00,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526345058] [2024-05-12 11:02:00,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:02:00,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:02:00,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:02:00,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:02:00,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:02:00,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:02:00,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 241 transitions, 2577 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:00,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:02:00,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:02:00,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:02:02,750 INFO L124 PetriNetUnfolderBase]: 6284/10938 cut-off events. [2024-05-12 11:02:02,750 INFO L125 PetriNetUnfolderBase]: For 208402/208728 co-relation queries the response was YES. [2024-05-12 11:02:02,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52607 conditions, 10938 events. 6284/10938 cut-off events. For 208402/208728 co-relation queries the response was YES. Maximal size of possible extension queue 774. Compared 83774 event pairs, 2686 based on Foata normal form. 84/10699 useless extension candidates. Maximal degree in co-relation 52489. Up to 9050 conditions per place. [2024-05-12 11:02:02,858 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 265 selfloop transitions, 34 changer transitions 4/310 dead transitions. [2024-05-12 11:02:02,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 310 transitions, 3734 flow [2024-05-12 11:02:02,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:02:02,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:02:02,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 273 transitions. [2024-05-12 11:02:02,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-05-12 11:02:02,860 INFO L175 Difference]: Start difference. First operand has 244 places, 241 transitions, 2577 flow. Second operand 11 states and 273 transitions. [2024-05-12 11:02:02,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 310 transitions, 3734 flow [2024-05-12 11:02:03,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 310 transitions, 3449 flow, removed 124 selfloop flow, removed 6 redundant places. [2024-05-12 11:02:03,170 INFO L231 Difference]: Finished difference. Result has 250 places, 244 transitions, 2481 flow [2024-05-12 11:02:03,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2481, PETRI_PLACES=250, PETRI_TRANSITIONS=244} [2024-05-12 11:02:03,171 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 197 predicate places. [2024-05-12 11:02:03,171 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 244 transitions, 2481 flow [2024-05-12 11:02:03,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:03,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:02:03,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:02:03,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 11:02:03,172 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:02:03,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:02:03,172 INFO L85 PathProgramCache]: Analyzing trace with hash -707716580, now seen corresponding path program 28 times [2024-05-12 11:02:03,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:02:03,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843143357] [2024-05-12 11:02:03,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:02:03,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:02:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:02:03,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:02:03,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:02:03,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843143357] [2024-05-12 11:02:03,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843143357] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:02:03,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:02:03,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:02:03,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731030325] [2024-05-12 11:02:03,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:02:03,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:02:04,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:02:04,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:02:04,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:02:04,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:02:04,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 244 transitions, 2481 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:04,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:02:04,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:02:04,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:02:06,233 INFO L124 PetriNetUnfolderBase]: 6459/11277 cut-off events. [2024-05-12 11:02:06,233 INFO L125 PetriNetUnfolderBase]: For 213049/213347 co-relation queries the response was YES. [2024-05-12 11:02:06,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54138 conditions, 11277 events. 6459/11277 cut-off events. For 213049/213347 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 87273 event pairs, 2822 based on Foata normal form. 68/11005 useless extension candidates. Maximal degree in co-relation 54017. Up to 9202 conditions per place. [2024-05-12 11:02:06,389 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 277 selfloop transitions, 36 changer transitions 4/324 dead transitions. [2024-05-12 11:02:06,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 324 transitions, 3824 flow [2024-05-12 11:02:06,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:02:06,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:02:06,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2024-05-12 11:02:06,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4764309764309764 [2024-05-12 11:02:06,391 INFO L175 Difference]: Start difference. First operand has 250 places, 244 transitions, 2481 flow. Second operand 11 states and 283 transitions. [2024-05-12 11:02:06,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 324 transitions, 3824 flow [2024-05-12 11:02:06,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 324 transitions, 3694 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-05-12 11:02:06,679 INFO L231 Difference]: Finished difference. Result has 255 places, 250 transitions, 2626 flow [2024-05-12 11:02:06,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2351, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2626, PETRI_PLACES=255, PETRI_TRANSITIONS=250} [2024-05-12 11:02:06,679 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 202 predicate places. [2024-05-12 11:02:06,680 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 250 transitions, 2626 flow [2024-05-12 11:02:06,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:06,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:02:06,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:02:06,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 11:02:06,680 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:02:06,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:02:06,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1526556578, now seen corresponding path program 29 times [2024-05-12 11:02:06,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:02:06,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204074192] [2024-05-12 11:02:06,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:02:06,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:02:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:02:07,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:02:07,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:02:07,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204074192] [2024-05-12 11:02:07,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204074192] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:02:07,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:02:07,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:02:07,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045571211] [2024-05-12 11:02:07,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:02:07,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:02:07,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:02:07,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:02:07,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:02:07,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:02:07,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 250 transitions, 2626 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:07,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:02:07,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:02:07,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:02:09,100 INFO L124 PetriNetUnfolderBase]: 6459/11289 cut-off events. [2024-05-12 11:02:09,100 INFO L125 PetriNetUnfolderBase]: For 226950/227248 co-relation queries the response was YES. [2024-05-12 11:02:09,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54758 conditions, 11289 events. 6459/11289 cut-off events. For 226950/227248 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 87374 event pairs, 2830 based on Foata normal form. 77/11025 useless extension candidates. Maximal degree in co-relation 54634. Up to 9279 conditions per place. [2024-05-12 11:02:09,239 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 271 selfloop transitions, 37 changer transitions 5/320 dead transitions. [2024-05-12 11:02:09,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 320 transitions, 3777 flow [2024-05-12 11:02:09,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:02:09,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:02:09,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 276 transitions. [2024-05-12 11:02:09,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-05-12 11:02:09,241 INFO L175 Difference]: Start difference. First operand has 255 places, 250 transitions, 2626 flow. Second operand 11 states and 276 transitions. [2024-05-12 11:02:09,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 320 transitions, 3777 flow [2024-05-12 11:02:09,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 320 transitions, 3579 flow, removed 80 selfloop flow, removed 6 redundant places. [2024-05-12 11:02:09,556 INFO L231 Difference]: Finished difference. Result has 261 places, 254 transitions, 2577 flow [2024-05-12 11:02:09,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2428, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2577, PETRI_PLACES=261, PETRI_TRANSITIONS=254} [2024-05-12 11:02:09,557 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 208 predicate places. [2024-05-12 11:02:09,557 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 254 transitions, 2577 flow [2024-05-12 11:02:09,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:09,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:02:09,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:02:09,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 11:02:09,558 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:02:09,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:02:09,558 INFO L85 PathProgramCache]: Analyzing trace with hash 674489876, now seen corresponding path program 30 times [2024-05-12 11:02:09,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:02:09,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555058048] [2024-05-12 11:02:09,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:02:09,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:02:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:02:10,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:02:10,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:02:10,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555058048] [2024-05-12 11:02:10,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555058048] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:02:10,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:02:10,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:02:10,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502308458] [2024-05-12 11:02:10,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:02:10,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:02:10,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:02:10,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:02:10,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:02:10,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:02:10,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 254 transitions, 2577 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:10,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:02:10,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:02:10,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:02:12,178 INFO L124 PetriNetUnfolderBase]: 6526/11405 cut-off events. [2024-05-12 11:02:12,178 INFO L125 PetriNetUnfolderBase]: For 215335/215669 co-relation queries the response was YES. [2024-05-12 11:02:12,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54213 conditions, 11405 events. 6526/11405 cut-off events. For 215335/215669 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 88557 event pairs, 2920 based on Foata normal form. 101/11155 useless extension candidates. Maximal degree in co-relation 54086. Up to 9495 conditions per place. [2024-05-12 11:02:12,320 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 271 selfloop transitions, 37 changer transitions 4/319 dead transitions. [2024-05-12 11:02:12,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 319 transitions, 3643 flow [2024-05-12 11:02:12,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:02:12,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:02:12,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 271 transitions. [2024-05-12 11:02:12,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4562289562289562 [2024-05-12 11:02:12,322 INFO L175 Difference]: Start difference. First operand has 261 places, 254 transitions, 2577 flow. Second operand 11 states and 271 transitions. [2024-05-12 11:02:12,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 319 transitions, 3643 flow [2024-05-12 11:02:12,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 319 transitions, 3507 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-05-12 11:02:12,708 INFO L231 Difference]: Finished difference. Result has 265 places, 257 transitions, 2587 flow [2024-05-12 11:02:12,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2441, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2587, PETRI_PLACES=265, PETRI_TRANSITIONS=257} [2024-05-12 11:02:12,709 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 212 predicate places. [2024-05-12 11:02:12,709 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 257 transitions, 2587 flow [2024-05-12 11:02:12,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:12,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:02:12,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:02:12,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 11:02:12,710 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:02:12,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:02:12,710 INFO L85 PathProgramCache]: Analyzing trace with hash -786749600, now seen corresponding path program 31 times [2024-05-12 11:02:12,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:02:12,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734447411] [2024-05-12 11:02:12,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:02:12,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:02:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:02:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:02:13,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:02:13,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734447411] [2024-05-12 11:02:13,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734447411] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:02:13,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:02:13,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:02:13,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213454393] [2024-05-12 11:02:13,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:02:13,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:02:13,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:02:13,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:02:13,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:02:13,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:02:13,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 257 transitions, 2587 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:13,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:02:13,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:02:13,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:02:15,118 INFO L124 PetriNetUnfolderBase]: 6526/11439 cut-off events. [2024-05-12 11:02:15,118 INFO L125 PetriNetUnfolderBase]: For 212848/213182 co-relation queries the response was YES. [2024-05-12 11:02:15,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53942 conditions, 11439 events. 6526/11439 cut-off events. For 212848/213182 co-relation queries the response was YES. Maximal size of possible extension queue 821. Compared 89129 event pairs, 2864 based on Foata normal form. 101/11192 useless extension candidates. Maximal degree in co-relation 53813. Up to 9394 conditions per place. [2024-05-12 11:02:15,328 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 272 selfloop transitions, 41 changer transitions 5/325 dead transitions. [2024-05-12 11:02:15,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 325 transitions, 3692 flow [2024-05-12 11:02:15,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:02:15,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:02:15,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 275 transitions. [2024-05-12 11:02:15,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-05-12 11:02:15,347 INFO L175 Difference]: Start difference. First operand has 265 places, 257 transitions, 2587 flow. Second operand 11 states and 275 transitions. [2024-05-12 11:02:15,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 325 transitions, 3692 flow [2024-05-12 11:02:15,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 325 transitions, 3556 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-05-12 11:02:15,723 INFO L231 Difference]: Finished difference. Result has 269 places, 261 transitions, 2621 flow [2024-05-12 11:02:15,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2451, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2621, PETRI_PLACES=269, PETRI_TRANSITIONS=261} [2024-05-12 11:02:15,724 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 216 predicate places. [2024-05-12 11:02:15,724 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 261 transitions, 2621 flow [2024-05-12 11:02:15,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:15,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:02:15,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:02:15,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 11:02:15,724 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:02:15,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:02:15,725 INFO L85 PathProgramCache]: Analyzing trace with hash -560977368, now seen corresponding path program 32 times [2024-05-12 11:02:15,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:02:15,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821821675] [2024-05-12 11:02:15,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:02:15,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:02:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:02:16,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:02:16,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:02:16,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821821675] [2024-05-12 11:02:16,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821821675] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:02:16,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:02:16,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:02:16,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039918026] [2024-05-12 11:02:16,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:02:16,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:02:16,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:02:16,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:02:16,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:02:16,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:02:16,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 261 transitions, 2621 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:16,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:02:16,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:02:16,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:02:18,311 INFO L124 PetriNetUnfolderBase]: 6526/11440 cut-off events. [2024-05-12 11:02:18,311 INFO L125 PetriNetUnfolderBase]: For 212917/213251 co-relation queries the response was YES. [2024-05-12 11:02:18,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53987 conditions, 11440 events. 6526/11440 cut-off events. For 212917/213251 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 88880 event pairs, 2927 based on Foata normal form. 89/11181 useless extension candidates. Maximal degree in co-relation 53856. Up to 9518 conditions per place. [2024-05-12 11:02:18,477 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 276 selfloop transitions, 35 changer transitions 4/322 dead transitions. [2024-05-12 11:02:18,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 322 transitions, 3641 flow [2024-05-12 11:02:18,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:02:18,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:02:18,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 267 transitions. [2024-05-12 11:02:18,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2024-05-12 11:02:18,479 INFO L175 Difference]: Start difference. First operand has 269 places, 261 transitions, 2621 flow. Second operand 11 states and 267 transitions. [2024-05-12 11:02:18,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 322 transitions, 3641 flow [2024-05-12 11:02:18,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 322 transitions, 3485 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-05-12 11:02:18,985 INFO L231 Difference]: Finished difference. Result has 273 places, 263 transitions, 2559 flow [2024-05-12 11:02:18,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2465, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2559, PETRI_PLACES=273, PETRI_TRANSITIONS=263} [2024-05-12 11:02:18,986 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 220 predicate places. [2024-05-12 11:02:18,986 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 263 transitions, 2559 flow [2024-05-12 11:02:18,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:18,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:02:18,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:02:18,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 11:02:18,986 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:02:18,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:02:18,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1527160132, now seen corresponding path program 33 times [2024-05-12 11:02:18,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:02:18,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879308694] [2024-05-12 11:02:18,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:02:18,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:02:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:02:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:02:19,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:02:19,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879308694] [2024-05-12 11:02:19,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879308694] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:02:19,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:02:19,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:02:19,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107342123] [2024-05-12 11:02:19,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:02:19,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:02:19,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:02:19,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:02:19,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:02:19,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:02:19,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 263 transitions, 2559 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:19,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:02:19,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:02:19,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:02:21,788 INFO L124 PetriNetUnfolderBase]: 6759/11832 cut-off events. [2024-05-12 11:02:21,788 INFO L125 PetriNetUnfolderBase]: For 235954/236330 co-relation queries the response was YES. [2024-05-12 11:02:21,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56804 conditions, 11832 events. 6759/11832 cut-off events. For 235954/236330 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 92581 event pairs, 3048 based on Foata normal form. 77/11539 useless extension candidates. Maximal degree in co-relation 56671. Up to 9712 conditions per place. [2024-05-12 11:02:21,936 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 292 selfloop transitions, 35 changer transitions 4/338 dead transitions. [2024-05-12 11:02:21,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 338 transitions, 4104 flow [2024-05-12 11:02:21,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:02:21,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:02:21,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 277 transitions. [2024-05-12 11:02:21,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4663299663299663 [2024-05-12 11:02:21,938 INFO L175 Difference]: Start difference. First operand has 273 places, 263 transitions, 2559 flow. Second operand 11 states and 277 transitions. [2024-05-12 11:02:21,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 338 transitions, 4104 flow [2024-05-12 11:02:22,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 338 transitions, 4036 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-05-12 11:02:22,496 INFO L231 Difference]: Finished difference. Result has 279 places, 272 transitions, 2970 flow [2024-05-12 11:02:22,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2970, PETRI_PLACES=279, PETRI_TRANSITIONS=272} [2024-05-12 11:02:22,497 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 226 predicate places. [2024-05-12 11:02:22,497 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 272 transitions, 2970 flow [2024-05-12 11:02:22,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:22,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:02:22,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:02:22,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 11:02:22,498 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:02:22,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:02:22,499 INFO L85 PathProgramCache]: Analyzing trace with hash 741506486, now seen corresponding path program 34 times [2024-05-12 11:02:22,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:02:22,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162955405] [2024-05-12 11:02:22,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:02:22,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:02:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:02:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:02:23,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:02:23,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162955405] [2024-05-12 11:02:23,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162955405] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:02:23,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:02:23,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:02:23,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517329364] [2024-05-12 11:02:23,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:02:23,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:02:23,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:02:23,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:02:23,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:02:23,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:02:23,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 272 transitions, 2970 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:23,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:02:23,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:02:23,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:02:25,270 INFO L124 PetriNetUnfolderBase]: 7040/12317 cut-off events. [2024-05-12 11:02:25,270 INFO L125 PetriNetUnfolderBase]: For 326628/327490 co-relation queries the response was YES. [2024-05-12 11:02:25,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63064 conditions, 12317 events. 7040/12317 cut-off events. For 326628/327490 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 97310 event pairs, 3026 based on Foata normal form. 77/12010 useless extension candidates. Maximal degree in co-relation 62927. Up to 10037 conditions per place. [2024-05-12 11:02:25,453 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 303 selfloop transitions, 36 changer transitions 4/350 dead transitions. [2024-05-12 11:02:25,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 350 transitions, 4547 flow [2024-05-12 11:02:25,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:02:25,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:02:25,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-05-12 11:02:25,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4730639730639731 [2024-05-12 11:02:25,455 INFO L175 Difference]: Start difference. First operand has 279 places, 272 transitions, 2970 flow. Second operand 11 states and 281 transitions. [2024-05-12 11:02:25,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 350 transitions, 4547 flow [2024-05-12 11:02:25,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 350 transitions, 4215 flow, removed 150 selfloop flow, removed 5 redundant places. [2024-05-12 11:02:25,991 INFO L231 Difference]: Finished difference. Result has 288 places, 281 transitions, 3079 flow [2024-05-12 11:02:25,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2638, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3079, PETRI_PLACES=288, PETRI_TRANSITIONS=281} [2024-05-12 11:02:25,992 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 235 predicate places. [2024-05-12 11:02:25,992 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 281 transitions, 3079 flow [2024-05-12 11:02:25,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:25,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:02:25,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:02:25,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 11:02:25,993 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:02:25,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:02:25,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1025863034, now seen corresponding path program 35 times [2024-05-12 11:02:25,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:02:25,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995858843] [2024-05-12 11:02:25,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:02:25,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:02:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:02:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:02:26,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:02:26,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995858843] [2024-05-12 11:02:26,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995858843] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:02:26,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:02:26,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:02:26,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968385315] [2024-05-12 11:02:26,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:02:26,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:02:26,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:02:26,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:02:26,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:02:26,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:02:26,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 281 transitions, 3079 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:26,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:02:26,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:02:26,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:02:28,618 INFO L124 PetriNetUnfolderBase]: 7146/12501 cut-off events. [2024-05-12 11:02:28,618 INFO L125 PetriNetUnfolderBase]: For 341424/342208 co-relation queries the response was YES. [2024-05-12 11:02:28,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63557 conditions, 12501 events. 7146/12501 cut-off events. For 341424/342208 co-relation queries the response was YES. Maximal size of possible extension queue 917. Compared 99034 event pairs, 3184 based on Foata normal form. 98/12209 useless extension candidates. Maximal degree in co-relation 63415. Up to 10441 conditions per place. [2024-05-12 11:02:28,836 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 295 selfloop transitions, 35 changer transitions 5/342 dead transitions. [2024-05-12 11:02:28,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 342 transitions, 4265 flow [2024-05-12 11:02:28,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:02:28,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:02:28,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2024-05-12 11:02:28,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478114478114478 [2024-05-12 11:02:28,837 INFO L175 Difference]: Start difference. First operand has 288 places, 281 transitions, 3079 flow. Second operand 11 states and 266 transitions. [2024-05-12 11:02:28,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 342 transitions, 4265 flow [2024-05-12 11:02:29,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 342 transitions, 3969 flow, removed 132 selfloop flow, removed 5 redundant places. [2024-05-12 11:02:29,486 INFO L231 Difference]: Finished difference. Result has 296 places, 287 transitions, 3038 flow [2024-05-12 11:02:29,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2783, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3038, PETRI_PLACES=296, PETRI_TRANSITIONS=287} [2024-05-12 11:02:29,487 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 243 predicate places. [2024-05-12 11:02:29,487 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 287 transitions, 3038 flow [2024-05-12 11:02:29,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:29,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:02:29,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:02:29,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 11:02:29,488 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:02:29,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:02:29,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1948529668, now seen corresponding path program 36 times [2024-05-12 11:02:29,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:02:29,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201648011] [2024-05-12 11:02:29,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:02:29,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:02:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:02:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:02:29,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:02:29,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201648011] [2024-05-12 11:02:29,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201648011] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:02:29,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:02:29,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:02:29,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052157691] [2024-05-12 11:02:29,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:02:29,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:02:29,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:02:29,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:02:29,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:02:30,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:02:30,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 287 transitions, 3038 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:30,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:02:30,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:02:30,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:02:32,386 INFO L124 PetriNetUnfolderBase]: 7393/12913 cut-off events. [2024-05-12 11:02:32,386 INFO L125 PetriNetUnfolderBase]: For 339807/340213 co-relation queries the response was YES. [2024-05-12 11:02:32,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65064 conditions, 12913 events. 7393/12913 cut-off events. For 339807/340213 co-relation queries the response was YES. Maximal size of possible extension queue 955. Compared 102796 event pairs, 3224 based on Foata normal form. 107/12626 useless extension candidates. Maximal degree in co-relation 64918. Up to 10480 conditions per place. [2024-05-12 11:02:32,573 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 308 selfloop transitions, 41 changer transitions 4/360 dead transitions. [2024-05-12 11:02:32,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 360 transitions, 4582 flow [2024-05-12 11:02:32,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:02:32,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:02:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-05-12 11:02:32,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-05-12 11:02:32,574 INFO L175 Difference]: Start difference. First operand has 296 places, 287 transitions, 3038 flow. Second operand 11 states and 279 transitions. [2024-05-12 11:02:32,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 360 transitions, 4582 flow [2024-05-12 11:02:33,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 360 transitions, 4366 flow, removed 89 selfloop flow, removed 6 redundant places. [2024-05-12 11:02:33,282 INFO L231 Difference]: Finished difference. Result has 303 places, 294 transitions, 3271 flow [2024-05-12 11:02:33,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2822, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3271, PETRI_PLACES=303, PETRI_TRANSITIONS=294} [2024-05-12 11:02:33,283 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 250 predicate places. [2024-05-12 11:02:33,283 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 294 transitions, 3271 flow [2024-05-12 11:02:33,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:33,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:02:33,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:02:33,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 11:02:33,284 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:02:33,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:02:33,284 INFO L85 PathProgramCache]: Analyzing trace with hash 351591728, now seen corresponding path program 37 times [2024-05-12 11:02:33,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:02:33,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029819874] [2024-05-12 11:02:33,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:02:33,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:02:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:02:33,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:02:33,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:02:33,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029819874] [2024-05-12 11:02:33,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029819874] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:02:33,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:02:33,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:02:33,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438315071] [2024-05-12 11:02:33,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:02:33,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:02:33,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:02:33,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:02:33,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:02:33,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:02:33,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 294 transitions, 3271 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:33,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:02:33,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:02:33,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:02:36,562 INFO L124 PetriNetUnfolderBase]: 7603/13280 cut-off events. [2024-05-12 11:02:36,562 INFO L125 PetriNetUnfolderBase]: For 405342/405763 co-relation queries the response was YES. [2024-05-12 11:02:36,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69277 conditions, 13280 events. 7603/13280 cut-off events. For 405342/405763 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 106265 event pairs, 3394 based on Foata normal form. 92/12968 useless extension candidates. Maximal degree in co-relation 69127. Up to 11000 conditions per place. [2024-05-12 11:02:36,722 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 325 selfloop transitions, 34 changer transitions 4/370 dead transitions. [2024-05-12 11:02:36,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 370 transitions, 4919 flow [2024-05-12 11:02:36,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:02:36,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:02:36,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 280 transitions. [2024-05-12 11:02:36,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713804713804714 [2024-05-12 11:02:36,723 INFO L175 Difference]: Start difference. First operand has 303 places, 294 transitions, 3271 flow. Second operand 11 states and 280 transitions. [2024-05-12 11:02:36,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 370 transitions, 4919 flow [2024-05-12 11:02:37,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 370 transitions, 4593 flow, removed 144 selfloop flow, removed 6 redundant places. [2024-05-12 11:02:37,458 INFO L231 Difference]: Finished difference. Result has 310 places, 300 transitions, 3362 flow [2024-05-12 11:02:37,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2951, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3362, PETRI_PLACES=310, PETRI_TRANSITIONS=300} [2024-05-12 11:02:37,459 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 257 predicate places. [2024-05-12 11:02:37,459 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 300 transitions, 3362 flow [2024-05-12 11:02:37,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:37,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:02:37,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:02:37,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 11:02:37,460 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:02:37,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:02:37,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1512501066, now seen corresponding path program 38 times [2024-05-12 11:02:37,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:02:37,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641320214] [2024-05-12 11:02:37,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:02:37,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:02:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:02:37,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:02:37,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:02:37,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641320214] [2024-05-12 11:02:37,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641320214] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:02:37,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:02:37,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:02:37,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344461456] [2024-05-12 11:02:37,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:02:37,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:02:37,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:02:37,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:02:37,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:02:37,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:02:37,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 300 transitions, 3362 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:37,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:02:37,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:02:37,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:02:40,389 INFO L124 PetriNetUnfolderBase]: 7603/13260 cut-off events. [2024-05-12 11:02:40,389 INFO L125 PetriNetUnfolderBase]: For 405847/406274 co-relation queries the response was YES. [2024-05-12 11:02:40,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67766 conditions, 13260 events. 7603/13260 cut-off events. For 405847/406274 co-relation queries the response was YES. Maximal size of possible extension queue 987. Compared 105732 event pairs, 3540 based on Foata normal form. 104/12958 useless extension candidates. Maximal degree in co-relation 67612. Up to 11149 conditions per place. [2024-05-12 11:02:40,601 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 320 selfloop transitions, 33 changer transitions 4/364 dead transitions. [2024-05-12 11:02:40,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 364 transitions, 4685 flow [2024-05-12 11:02:40,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:02:40,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:02:40,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 270 transitions. [2024-05-12 11:02:40,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-05-12 11:02:40,603 INFO L175 Difference]: Start difference. First operand has 310 places, 300 transitions, 3362 flow. Second operand 11 states and 270 transitions. [2024-05-12 11:02:40,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 364 transitions, 4685 flow [2024-05-12 11:02:41,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 364 transitions, 4302 flow, removed 174 selfloop flow, removed 6 redundant places. [2024-05-12 11:02:41,380 INFO L231 Difference]: Finished difference. Result has 316 places, 303 transitions, 3206 flow [2024-05-12 11:02:41,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3055, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3206, PETRI_PLACES=316, PETRI_TRANSITIONS=303} [2024-05-12 11:02:41,381 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 263 predicate places. [2024-05-12 11:02:41,381 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 303 transitions, 3206 flow [2024-05-12 11:02:41,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:41,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:02:41,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:02:41,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 11:02:41,382 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:02:41,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:02:41,382 INFO L85 PathProgramCache]: Analyzing trace with hash -338253046, now seen corresponding path program 39 times [2024-05-12 11:02:41,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:02:41,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036312949] [2024-05-12 11:02:41,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:02:41,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:02:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:02:41,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:02:41,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:02:41,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036312949] [2024-05-12 11:02:41,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036312949] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:02:41,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:02:41,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:02:41,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964813863] [2024-05-12 11:02:41,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:02:41,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:02:41,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:02:41,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:02:41,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:02:41,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:02:41,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 303 transitions, 3206 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:41,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:02:41,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:02:41,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:02:44,590 INFO L124 PetriNetUnfolderBase]: 7717/13485 cut-off events. [2024-05-12 11:02:44,591 INFO L125 PetriNetUnfolderBase]: For 402432/402831 co-relation queries the response was YES. [2024-05-12 11:02:44,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68161 conditions, 13485 events. 7717/13485 cut-off events. For 402432/402831 co-relation queries the response was YES. Maximal size of possible extension queue 989. Compared 107940 event pairs, 3629 based on Foata normal form. 88/13166 useless extension candidates. Maximal degree in co-relation 68004. Up to 11181 conditions per place. [2024-05-12 11:02:44,785 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 331 selfloop transitions, 35 changer transitions 4/377 dead transitions. [2024-05-12 11:02:44,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 377 transitions, 4746 flow [2024-05-12 11:02:44,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:02:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:02:44,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 280 transitions. [2024-05-12 11:02:44,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713804713804714 [2024-05-12 11:02:44,787 INFO L175 Difference]: Start difference. First operand has 316 places, 303 transitions, 3206 flow. Second operand 11 states and 280 transitions. [2024-05-12 11:02:44,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 377 transitions, 4746 flow [2024-05-12 11:02:45,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 377 transitions, 4588 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-05-12 11:02:45,523 INFO L231 Difference]: Finished difference. Result has 321 places, 308 transitions, 3372 flow [2024-05-12 11:02:45,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3048, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3372, PETRI_PLACES=321, PETRI_TRANSITIONS=308} [2024-05-12 11:02:45,524 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 268 predicate places. [2024-05-12 11:02:45,524 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 308 transitions, 3372 flow [2024-05-12 11:02:45,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:45,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:02:45,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:02:45,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 11:02:45,524 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:02:45,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:02:45,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1896020112, now seen corresponding path program 40 times [2024-05-12 11:02:45,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:02:45,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227092874] [2024-05-12 11:02:45,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:02:45,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:02:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:02:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:02:45,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:02:45,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227092874] [2024-05-12 11:02:45,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227092874] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:02:45,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:02:45,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:02:45,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170772669] [2024-05-12 11:02:45,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:02:45,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:02:45,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:02:45,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:02:45,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:02:46,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:02:46,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 308 transitions, 3372 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:46,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:02:46,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:02:46,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:02:49,166 INFO L124 PetriNetUnfolderBase]: 7717/13497 cut-off events. [2024-05-12 11:02:49,166 INFO L125 PetriNetUnfolderBase]: For 421841/422240 co-relation queries the response was YES. [2024-05-12 11:02:49,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68663 conditions, 13497 events. 7717/13497 cut-off events. For 421841/422240 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 108098 event pairs, 3629 based on Foata normal form. 97/13186 useless extension candidates. Maximal degree in co-relation 68503. Up to 11258 conditions per place. [2024-05-12 11:02:49,358 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 325 selfloop transitions, 36 changer transitions 5/373 dead transitions. [2024-05-12 11:02:49,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 373 transitions, 4665 flow [2024-05-12 11:02:49,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:02:49,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:02:49,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 273 transitions. [2024-05-12 11:02:49,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-05-12 11:02:49,360 INFO L175 Difference]: Start difference. First operand has 321 places, 308 transitions, 3372 flow. Second operand 11 states and 273 transitions. [2024-05-12 11:02:49,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 373 transitions, 4665 flow [2024-05-12 11:02:50,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 373 transitions, 4405 flow, removed 112 selfloop flow, removed 6 redundant places. [2024-05-12 11:02:50,270 INFO L231 Difference]: Finished difference. Result has 327 places, 312 transitions, 3279 flow [2024-05-12 11:02:50,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3112, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3279, PETRI_PLACES=327, PETRI_TRANSITIONS=312} [2024-05-12 11:02:50,271 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 274 predicate places. [2024-05-12 11:02:50,271 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 312 transitions, 3279 flow [2024-05-12 11:02:50,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:50,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:02:50,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:02:50,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 11:02:50,272 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:02:50,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:02:50,272 INFO L85 PathProgramCache]: Analyzing trace with hash 2114632902, now seen corresponding path program 41 times [2024-05-12 11:02:50,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:02:50,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465760391] [2024-05-12 11:02:50,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:02:50,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:02:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:02:50,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:02:50,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:02:50,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465760391] [2024-05-12 11:02:50,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465760391] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:02:50,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:02:50,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:02:50,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575881344] [2024-05-12 11:02:50,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:02:50,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:02:50,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:02:50,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:02:50,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:02:50,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:02:50,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 312 transitions, 3279 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:50,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:02:50,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:02:50,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:02:54,254 INFO L124 PetriNetUnfolderBase]: 7784/13613 cut-off events. [2024-05-12 11:02:54,255 INFO L125 PetriNetUnfolderBase]: For 394749/395184 co-relation queries the response was YES. [2024-05-12 11:02:54,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67571 conditions, 13613 events. 7784/13613 cut-off events. For 394749/395184 co-relation queries the response was YES. Maximal size of possible extension queue 1005. Compared 109393 event pairs, 3719 based on Foata normal form. 121/13316 useless extension candidates. Maximal degree in co-relation 67408. Up to 11474 conditions per place. [2024-05-12 11:02:54,471 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 325 selfloop transitions, 36 changer transitions 4/372 dead transitions. [2024-05-12 11:02:54,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 372 transitions, 4467 flow [2024-05-12 11:02:54,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:02:54,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:02:54,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 268 transitions. [2024-05-12 11:02:54,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511784511784512 [2024-05-12 11:02:54,473 INFO L175 Difference]: Start difference. First operand has 327 places, 312 transitions, 3279 flow. Second operand 11 states and 268 transitions. [2024-05-12 11:02:54,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 372 transitions, 4467 flow [2024-05-12 11:02:55,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 372 transitions, 4303 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-05-12 11:02:55,435 INFO L231 Difference]: Finished difference. Result has 331 places, 315 transitions, 3279 flow [2024-05-12 11:02:55,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3115, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3279, PETRI_PLACES=331, PETRI_TRANSITIONS=315} [2024-05-12 11:02:55,436 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 278 predicate places. [2024-05-12 11:02:55,436 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 315 transitions, 3279 flow [2024-05-12 11:02:55,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:55,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:02:55,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:02:55,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 11:02:55,440 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:02:55,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:02:55,440 INFO L85 PathProgramCache]: Analyzing trace with hash 825373948, now seen corresponding path program 42 times [2024-05-12 11:02:55,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:02:55,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622528462] [2024-05-12 11:02:55,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:02:55,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:02:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:02:55,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:02:55,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:02:55,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622528462] [2024-05-12 11:02:55,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622528462] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:02:55,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:02:55,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:02:55,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391249088] [2024-05-12 11:02:55,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:02:55,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:02:55,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:02:55,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:02:55,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:02:55,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:02:55,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 315 transitions, 3279 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:02:55,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:02:55,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:02:55,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:02:59,078 INFO L124 PetriNetUnfolderBase]: 7784/13647 cut-off events. [2024-05-12 11:02:59,078 INFO L125 PetriNetUnfolderBase]: For 387971/388406 co-relation queries the response was YES. [2024-05-12 11:02:59,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67109 conditions, 13647 events. 7784/13647 cut-off events. For 387971/388406 co-relation queries the response was YES. Maximal size of possible extension queue 1008. Compared 109852 event pairs, 3669 based on Foata normal form. 121/13353 useless extension candidates. Maximal degree in co-relation 66944. Up to 11373 conditions per place. [2024-05-12 11:02:59,277 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 326 selfloop transitions, 40 changer transitions 5/378 dead transitions. [2024-05-12 11:02:59,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 378 transitions, 4506 flow [2024-05-12 11:02:59,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:02:59,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:02:59,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2024-05-12 11:02:59,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45791245791245794 [2024-05-12 11:02:59,278 INFO L175 Difference]: Start difference. First operand has 331 places, 315 transitions, 3279 flow. Second operand 11 states and 272 transitions. [2024-05-12 11:02:59,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 378 transitions, 4506 flow [2024-05-12 11:03:00,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 378 transitions, 4342 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-05-12 11:03:00,099 INFO L231 Difference]: Finished difference. Result has 335 places, 319 transitions, 3303 flow [2024-05-12 11:03:00,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3115, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3303, PETRI_PLACES=335, PETRI_TRANSITIONS=319} [2024-05-12 11:03:00,101 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 282 predicate places. [2024-05-12 11:03:00,101 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 319 transitions, 3303 flow [2024-05-12 11:03:00,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:03:00,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:03:00,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:03:00,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 11:03:00,102 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:03:00,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:03:00,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1503024200, now seen corresponding path program 43 times [2024-05-12 11:03:00,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:03:00,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717036144] [2024-05-12 11:03:00,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:03:00,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:03:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:03:00,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-05-12 11:03:00,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:03:00,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717036144] [2024-05-12 11:03:00,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717036144] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:03:00,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:03:00,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:03:00,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204266851] [2024-05-12 11:03:00,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:03:00,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:03:00,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:03:00,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:03:00,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:03:00,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-05-12 11:03:00,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 319 transitions, 3303 flow. Second operand has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:03:00,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:03:00,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-05-12 11:03:00,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:03:03,671 INFO L124 PetriNetUnfolderBase]: 7784/13648 cut-off events. [2024-05-12 11:03:03,672 INFO L125 PetriNetUnfolderBase]: For 385191/385626 co-relation queries the response was YES. [2024-05-12 11:03:03,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67068 conditions, 13648 events. 7784/13648 cut-off events. For 385191/385626 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 110168 event pairs, 3632 based on Foata normal form. 109/13333 useless extension candidates. Maximal degree in co-relation 66901. Up to 11497 conditions per place. [2024-05-12 11:03:03,876 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 330 selfloop transitions, 34 changer transitions 4/375 dead transitions. [2024-05-12 11:03:03,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 375 transitions, 4425 flow [2024-05-12 11:03:03,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:03:03,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:03:03,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 264 transitions. [2024-05-12 11:03:03,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-05-12 11:03:03,878 INFO L175 Difference]: Start difference. First operand has 335 places, 319 transitions, 3303 flow. Second operand 11 states and 264 transitions. [2024-05-12 11:03:03,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 375 transitions, 4425 flow [2024-05-12 11:03:04,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 375 transitions, 4241 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-05-12 11:03:04,814 INFO L231 Difference]: Finished difference. Result has 339 places, 321 transitions, 3211 flow [2024-05-12 11:03:04,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3119, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3211, PETRI_PLACES=339, PETRI_TRANSITIONS=321} [2024-05-12 11:03:04,815 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 286 predicate places. [2024-05-12 11:03:04,815 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 321 transitions, 3211 flow [2024-05-12 11:03:04,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.272727272727273) internal successors, (179), 11 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:03:04,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:03:04,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:03:04,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 11:03:04,816 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:03:04,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:03:04,816 INFO L85 PathProgramCache]: Analyzing trace with hash 166214436, now seen corresponding path program 1 times [2024-05-12 11:03:04,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:03:04,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050350428] [2024-05-12 11:03:04,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:03:04,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:03:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:03:04,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-05-12 11:03:04,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:03:04,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050350428] [2024-05-12 11:03:04,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050350428] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 11:03:04,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631982399] [2024-05-12 11:03:04,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:03:04,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:03:04,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:03:04,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 11:03:04,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-05-12 11:03:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:03:05,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 8 conjunts are in the unsatisfiable core [2024-05-12 11:03:05,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:03:05,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-05-12 11:03:05,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 11:03:05,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-05-12 11:03:05,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631982399] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 11:03:05,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 11:03:05,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-05-12 11:03:05,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362464800] [2024-05-12 11:03:05,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 11:03:05,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:03:05,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:03:05,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:03:05,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:03:05,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-05-12 11:03:05,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 321 transitions, 3211 flow. Second operand has 12 states, 12 states have (on average 20.833333333333332) internal successors, (250), 12 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:03:05,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:03:05,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-05-12 11:03:05,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:03:10,582 INFO L124 PetriNetUnfolderBase]: 13021/24059 cut-off events. [2024-05-12 11:03:10,582 INFO L125 PetriNetUnfolderBase]: For 934718/936213 co-relation queries the response was YES. [2024-05-12 11:03:11,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120732 conditions, 24059 events. 13021/24059 cut-off events. For 934718/936213 co-relation queries the response was YES. Maximal size of possible extension queue 1826. Compared 225754 event pairs, 7833 based on Foata normal form. 748/23938 useless extension candidates. Maximal degree in co-relation 120130. Up to 10303 conditions per place. [2024-05-12 11:03:11,141 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 535 selfloop transitions, 6 changer transitions 12/601 dead transitions. [2024-05-12 11:03:11,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 601 transitions, 7190 flow [2024-05-12 11:03:11,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 11:03:11,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 11:03:11,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-05-12 11:03:11,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026455026455027 [2024-05-12 11:03:11,142 INFO L175 Difference]: Start difference. First operand has 339 places, 321 transitions, 3211 flow. Second operand 7 states and 190 transitions. [2024-05-12 11:03:11,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 601 transitions, 7190 flow [2024-05-12 11:03:12,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 601 transitions, 7060 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-05-12 11:03:12,222 INFO L231 Difference]: Finished difference. Result has 341 places, 325 transitions, 3201 flow [2024-05-12 11:03:12,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3145, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3201, PETRI_PLACES=341, PETRI_TRANSITIONS=325} [2024-05-12 11:03:12,223 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 288 predicate places. [2024-05-12 11:03:12,223 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 325 transitions, 3201 flow [2024-05-12 11:03:12,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.833333333333332) internal successors, (250), 12 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:03:12,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:03:12,225 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:03:12,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-05-12 11:03:12,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-05-12 11:03:12,437 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:03:12,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:03:12,442 INFO L85 PathProgramCache]: Analyzing trace with hash -213599724, now seen corresponding path program 2 times [2024-05-12 11:03:12,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:03:12,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171410703] [2024-05-12 11:03:12,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:03:12,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:03:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:03:13,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-05-12 11:03:13,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:03:13,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171410703] [2024-05-12 11:03:13,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171410703] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 11:03:13,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277533857] [2024-05-12 11:03:13,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-12 11:03:13,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:03:13,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:03:13,006 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 11:03:13,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-05-12 11:03:13,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-12 11:03:13,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 11:03:13,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 31 conjunts are in the unsatisfiable core [2024-05-12 11:03:13,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:03:13,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-05-12 11:03:13,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 11:03:13,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 11:03:13,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 11:03:13,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 11:03:13,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 11:03:13,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2024-05-12 11:03:13,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 11:03:13,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 11:03:13,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 11:03:13,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 11:03:13,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 11:03:13,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 11:03:13,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 11:03:13,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 11:03:13,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 11:03:13,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 11:03:13,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 11:03:13,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 11:03:13,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 11:03:13,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 11:03:13,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-05-12 11:03:13,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-05-12 11:03:13,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-05-12 11:03:13,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-05-12 11:03:13,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-05-12 11:03:13,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-05-12 11:03:13,433 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-05-12 11:03:13,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-05-12 11:03:13,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-05-12 11:03:13,583 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-05-12 11:03:13,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-05-12 11:03:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:03:13,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 11:03:14,077 INFO L349 Elim1Store]: treesize reduction 16, result has 65.2 percent of original size [2024-05-12 11:03:14,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 60 [2024-05-12 11:03:14,103 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-05-12 11:03:14,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 77 [2024-05-12 11:03:14,122 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-05-12 11:03:14,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 37 [2024-05-12 11:03:14,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:03:14,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277533857] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 11:03:14,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 11:03:14,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2024-05-12 11:03:14,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477076847] [2024-05-12 11:03:14,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 11:03:14,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-05-12 11:03:14,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:03:14,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-05-12 11:03:14,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=545, Unknown=3, NotChecked=0, Total=650 [2024-05-12 11:03:14,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 54 [2024-05-12 11:03:14,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 325 transitions, 3201 flow. Second operand has 26 states, 26 states have (on average 13.5) internal successors, (351), 26 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:03:14,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:03:14,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 54 [2024-05-12 11:03:14,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand