./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/circular_buffer_bad.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8857f20b Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/circular_buffer_bad.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-dev-8857f20-m [2024-01-29 23:22:06,677 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 23:22:06,777 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 23:22:06,783 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 23:22:06,783 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 23:22:06,812 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 23:22:06,812 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 23:22:06,813 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 23:22:06,813 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 23:22:06,817 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 23:22:06,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 23:22:06,817 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 23:22:06,818 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 23:22:06,819 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 23:22:06,820 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 23:22:06,820 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 23:22:06,820 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 23:22:06,820 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 23:22:06,821 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 23:22:06,821 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 23:22:06,821 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 23:22:06,821 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 23:22:06,822 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 23:22:06,822 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 23:22:06,822 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 23:22:06,822 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 23:22:06,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 23:22:06,823 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 23:22:06,823 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 23:22:06,823 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 23:22:06,824 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 23:22:06,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 23:22:06,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 23:22:06,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 23:22:06,825 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 23:22:06,825 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 23:22:06,825 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 23:22:06,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 23:22:06,826 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 23:22:06,826 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 23:22:06,826 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 23:22:06,827 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 23:22:06,827 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 23:22:06,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 23:22:07,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 23:22:07,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 23:22:07,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 23:22:07,112 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 23:22:07,113 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 23:22:07,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i [2024-01-29 23:22:08,216 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 23:22:08,497 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 23:22:08,498 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i [2024-01-29 23:22:08,510 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb7746f9f/1cdd281780f246869da3cac5264bf828/FLAG0100b6595 [2024-01-29 23:22:08,523 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb7746f9f/1cdd281780f246869da3cac5264bf828 [2024-01-29 23:22:08,526 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 23:22:08,526 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 23:22:08,528 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/circular_buffer_bad.yml/witness.yml [2024-01-29 23:22:08,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 23:22:08,642 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 23:22:08,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 23:22:08,643 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 23:22:08,647 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 23:22:08,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 11:22:08" (1/2) ... [2024-01-29 23:22:08,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fbe84d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:22:08, skipping insertion in model container [2024-01-29 23:22:08,648 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 11:22:08" (1/2) ... [2024-01-29 23:22:08,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@372e9c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 11:22:08, skipping insertion in model container [2024-01-29 23:22:08,649 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 11:22:08" (2/2) ... [2024-01-29 23:22:08,650 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fbe84d7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:22:08, skipping insertion in model container [2024-01-29 23:22:08,650 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 11:22:08" (2/2) ... [2024-01-29 23:22:08,650 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 23:22:08,750 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 23:22:08,751 INFO L98 nessWitnessExtractor]: Location invariant before [L729-L729] ((send == (_Bool)1) && ((unsigned long )arg == 0UL)) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-01-29 23:22:08,751 INFO L98 nessWitnessExtractor]: Location invariant before [L729-L729] (send == (_Bool)1) && ((unsigned long )arg == 0UL) [2024-01-29 23:22:08,752 INFO L98 nessWitnessExtractor]: Location invariant before [L729-L729] (((send == (_Bool)1) && ((unsigned long )arg == 0UL)) && (receive == (_Bool)0 || receive == (_Bool)1)) && ((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || i == 6) [2024-01-29 23:22:08,752 INFO L98 nessWitnessExtractor]: Location invariant before [L729-L729] send == (_Bool)1 [2024-01-29 23:22:08,752 INFO L98 nessWitnessExtractor]: Location invariant before [L743-L749] (((unsigned long )arg == 0UL) && (send == (_Bool)0 || send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-01-29 23:22:08,752 INFO L98 nessWitnessExtractor]: Location invariant before [L743-L749] ((unsigned long )arg == 0UL) && (send == (_Bool)0 || send == (_Bool)1) [2024-01-29 23:22:08,752 INFO L98 nessWitnessExtractor]: Location invariant before [L743-L749] (unsigned long )arg == 0UL [2024-01-29 23:22:08,752 INFO L98 nessWitnessExtractor]: Location invariant before [L743-L749] ((((unsigned long )arg == 0UL) && (send == (_Bool)0 || send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1)) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || i == 4) [2024-01-29 23:22:08,752 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] 10 == max [2024-01-29 23:22:08,753 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] (10 == max) && (receive == (_Bool)0) [2024-01-29 23:22:08,753 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] (10 == max) && (send == (_Bool)0) [2024-01-29 23:22:08,753 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] (10 == max) && (max == 10) [2024-01-29 23:22:08,753 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] 0 <= b [2024-01-29 23:22:08,753 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] (0 <= b) && (b <= 6) [2024-01-29 23:22:08,753 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] (0 <= b) && ((((((b == 0 || b == 1) || b == 2) || b == 3) || b == 4) || b == 5) || b == 6) [2024-01-29 23:22:08,753 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] (0 <= b) && (send == (_Bool)1) [2024-01-29 23:22:08,754 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] (0 <= b) && (b <= 127) [2024-01-29 23:22:08,754 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] (0 <= b) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-01-29 23:22:08,754 INFO L98 nessWitnessExtractor]: Location invariant before [L712-L713] 0 <= b [2024-01-29 23:22:08,754 INFO L98 nessWitnessExtractor]: Location invariant before [L712-L713] (0 <= b) && (send == (_Bool)1) [2024-01-29 23:22:08,754 INFO L98 nessWitnessExtractor]: Location invariant before [L712-L713] (0 <= b) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-01-29 23:22:08,755 INFO L98 nessWitnessExtractor]: Location invariant before [L712-L713] (0 <= b) && ((((((b == 0 || b == 1) || b == 2) || b == 3) || b == 4) || b == 5) || b == 6) [2024-01-29 23:22:08,755 INFO L98 nessWitnessExtractor]: Location invariant before [L712-L713] (0 <= b) && (b <= 6) [2024-01-29 23:22:08,755 INFO L98 nessWitnessExtractor]: Location invariant before [L712-L713] (0 <= b) && (b <= 127) [2024-01-29 23:22:08,755 INFO L98 nessWitnessExtractor]: Location invariant before [L730-L730] (send == (_Bool)1) && ((unsigned long )arg == 0UL) [2024-01-29 23:22:08,755 INFO L98 nessWitnessExtractor]: Location invariant before [L730-L730] ((send == (_Bool)1) && ((unsigned long )arg == 0UL)) && ((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || i == 6) [2024-01-29 23:22:08,755 INFO L98 nessWitnessExtractor]: Location invariant before [L730-L730] ((send == (_Bool)1) && ((unsigned long )arg == 0UL)) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-01-29 23:22:08,755 INFO L98 nessWitnessExtractor]: Location invariant before [L730-L730] send == (_Bool)1 [2024-01-29 23:22:08,756 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] (receive == (_Bool)1) && (send == (_Bool)0 || send == (_Bool)1) [2024-01-29 23:22:08,756 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] receive == (_Bool)1 [2024-01-29 23:22:08,756 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] send == (_Bool)0 [2024-01-29 23:22:08,756 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] (send == (_Bool)0) && ((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || i == 6) [2024-01-29 23:22:08,756 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] (send == (_Bool)0) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-01-29 23:22:08,756 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] (send == (_Bool)0) && ((unsigned long )arg == 0UL) [2024-01-29 23:22:08,756 INFO L98 nessWitnessExtractor]: Location invariant before [L695-L703] (receive == (_Bool)1) && (send == (_Bool)0 || send == (_Bool)1) [2024-01-29 23:22:08,757 INFO L98 nessWitnessExtractor]: Location invariant before [L695-L703] receive == (_Bool)1 [2024-01-29 23:22:08,757 INFO L98 nessWitnessExtractor]: Location invariant before [L752-L752] i == 7 [2024-01-29 23:22:08,757 INFO L98 nessWitnessExtractor]: Location invariant before [L752-L752] (i == 7) && ((unsigned long )arg == 0UL) [2024-01-29 23:22:08,758 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] ((unsigned long )arg == 0UL) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || i == 4) [2024-01-29 23:22:08,758 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] (unsigned long )arg == 0UL [2024-01-29 23:22:08,758 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L718] (0 <= b) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-01-29 23:22:08,759 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L718] 0 <= b [2024-01-29 23:22:08,759 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L718] (0 <= b) && (b <= 127) [2024-01-29 23:22:08,759 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L718] (0 <= b) && (b <= 6) [2024-01-29 23:22:08,759 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L718] (0 <= b) && (send == (_Bool)1) [2024-01-29 23:22:08,759 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L718] ((0 <= b) && (receive == (_Bool)0 || receive == (_Bool)1)) && ((((((b == 0 || b == 1) || b == 2) || b == 3) || b == 4) || b == 5) || b == 6) [2024-01-29 23:22:08,759 INFO L98 nessWitnessExtractor]: Location invariant before [L750-L750] (receive == (_Bool)0) && (send == (_Bool)0 || send == (_Bool)1) [2024-01-29 23:22:08,759 INFO L98 nessWitnessExtractor]: Location invariant before [L750-L750] ((receive == (_Bool)0) && (send == (_Bool)0 || send == (_Bool)1)) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || i == 4) [2024-01-29 23:22:08,760 INFO L98 nessWitnessExtractor]: Location invariant before [L750-L750] receive == (_Bool)0 [2024-01-29 23:22:08,760 INFO L98 nessWitnessExtractor]: Location invariant before [L750-L750] (receive == (_Bool)0) && ((unsigned long )arg == 0UL) [2024-01-29 23:22:08,760 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] (((0 <= b) && (b <= 6)) && (b <= 127)) && (send == (_Bool)1) [2024-01-29 23:22:08,760 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] ((0 <= b) && (b <= 6)) && (b <= 127) [2024-01-29 23:22:08,760 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] ((((0 <= b) && (b <= 6)) && (b <= 127)) && (send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-01-29 23:22:08,761 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] ((((0 <= b) && (b <= 6)) && (b <= 127)) && (send == (_Bool)1)) && ((((((b == 0 || b == 1) || b == 2) || b == 3) || b == 4) || b == 5) || b == 6) [2024-01-29 23:22:08,761 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] (0 <= b) && (b <= 6) [2024-01-29 23:22:08,761 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] 0 <= b [2024-01-29 23:22:08,761 INFO L98 nessWitnessExtractor]: Location invariant after [L688-L692] 10 == max [2024-01-29 23:22:08,762 INFO L98 nessWitnessExtractor]: Location invariant after [L688-L692] (10 == max) && (max == 10) [2024-01-29 23:22:08,762 INFO L98 nessWitnessExtractor]: Location invariant after [L688-L692] (10 == max) && (send == (_Bool)0) [2024-01-29 23:22:08,762 INFO L98 nessWitnessExtractor]: Location invariant after [L688-L692] (10 == max) && (receive == (_Bool)0) [2024-01-29 23:22:08,762 INFO L98 nessWitnessExtractor]: Location invariant before [L747-L747] ((receive == (_Bool)1) && ((unsigned long )arg == 0UL)) && (send == (_Bool)0 || send == (_Bool)1) [2024-01-29 23:22:08,763 INFO L98 nessWitnessExtractor]: Location invariant before [L747-L747] (((receive == (_Bool)1) && ((unsigned long )arg == 0UL)) && (send == (_Bool)0 || send == (_Bool)1)) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || ((((-128 <= i && 5 <= i) && i <= 6) && i <= 127) && (((((((i == -1 || i == 0) || i == 1) || i == 2) || i == 3) || i == 4) || i == 5) || i == 6))) || i == 4) [2024-01-29 23:22:08,763 INFO L98 nessWitnessExtractor]: Location invariant before [L747-L747] (receive == (_Bool)1) && ((unsigned long )arg == 0UL) [2024-01-29 23:22:08,763 INFO L98 nessWitnessExtractor]: Location invariant before [L747-L747] receive == (_Bool)1 [2024-01-29 23:22:08,763 INFO L98 nessWitnessExtractor]: Location invariant before [L758-L758] send == (_Bool)0 [2024-01-29 23:22:08,763 INFO L98 nessWitnessExtractor]: Location invariant before [L758-L758] (send == (_Bool)0) && (receive == (_Bool)0) [2024-01-29 23:22:08,763 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] 0 <= b [2024-01-29 23:22:08,763 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] (0 <= b) && (send == (_Bool)1) [2024-01-29 23:22:08,763 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] (0 <= b) && (b <= 6) [2024-01-29 23:22:08,764 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] (0 <= b) && (b <= 127) [2024-01-29 23:22:08,764 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] (0 <= b) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-01-29 23:22:08,764 INFO L98 nessWitnessExtractor]: Location invariant before [L710-L710] (0 <= b) && ((((((b == 0 || b == 1) || b == 2) || b == 3) || b == 4) || b == 5) || b == 6) [2024-01-29 23:22:08,764 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (unsigned long )arg == 0UL [2024-01-29 23:22:08,764 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] ((unsigned long )arg == 0UL) && ((((((i == 6 || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) [2024-01-29 23:22:08,764 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] (send == (_Bool)1) && (receive == (_Bool)0) [2024-01-29 23:22:08,764 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] send == (_Bool)1 [2024-01-29 23:22:08,764 INFO L98 nessWitnessExtractor]: Location invariant before [L745-L746] ((receive == (_Bool)1) && ((unsigned long )arg == 0UL)) && (send == (_Bool)0 || send == (_Bool)1) [2024-01-29 23:22:08,765 INFO L98 nessWitnessExtractor]: Location invariant after [L745-L746] (receive == (_Bool)1) && ((unsigned long )arg == 0UL) [2024-01-29 23:22:08,765 INFO L98 nessWitnessExtractor]: Location invariant before [L745-L746] (receive == (_Bool)1) && ((unsigned long )arg == 0UL) [2024-01-29 23:22:08,765 INFO L98 nessWitnessExtractor]: Location invariant before [L745-L746] receive == (_Bool)1 [2024-01-29 23:22:08,765 INFO L98 nessWitnessExtractor]: Location invariant after [L745-L746] receive == (_Bool)1 [2024-01-29 23:22:08,765 INFO L98 nessWitnessExtractor]: Location invariant before [L745-L746] (((receive == (_Bool)1) && ((unsigned long )arg == 0UL)) && (send == (_Bool)0 || send == (_Bool)1)) && ((((((((((i == 3 || i == 2) || i == 2) || i == 1) || i == 1) || (0 == i && i == 0)) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || (5 <= i && i <= 6)) || i == 4) || i == 4) [2024-01-29 23:22:08,765 INFO L98 nessWitnessExtractor]: Location invariant after [L745-L746] ((receive == (_Bool)1) && ((unsigned long )arg == 0UL)) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || i == 4) [2024-01-29 23:22:08,765 INFO L98 nessWitnessExtractor]: Location invariant after [L745-L746] ((receive == (_Bool)1) && ((unsigned long )arg == 0UL)) && (send == (_Bool)0 || send == (_Bool)1) [2024-01-29 23:22:08,765 INFO L98 nessWitnessExtractor]: Location invariant before [L731-L731] (send == (_Bool)0) && ((unsigned long )arg == 0UL) [2024-01-29 23:22:08,766 INFO L98 nessWitnessExtractor]: Location invariant before [L731-L731] ((send == (_Bool)0) && ((unsigned long )arg == 0UL)) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-01-29 23:22:08,766 INFO L98 nessWitnessExtractor]: Location invariant before [L731-L731] ((send == (_Bool)0) && ((unsigned long )arg == 0UL)) && ((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || i == 6) [2024-01-29 23:22:08,766 INFO L98 nessWitnessExtractor]: Location invariant before [L731-L731] send == (_Bool)0 [2024-01-29 23:22:08,766 INFO L98 nessWitnessExtractor]: Location invariant before [L709-L709] (0 <= b) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-01-29 23:22:08,766 INFO L98 nessWitnessExtractor]: Location invariant before [L709-L709] 0 <= b [2024-01-29 23:22:08,766 INFO L98 nessWitnessExtractor]: Location invariant before [L709-L709] (0 <= b) && (b <= 127) [2024-01-29 23:22:08,766 INFO L98 nessWitnessExtractor]: Location invariant before [L709-L709] ((0 <= b) && (receive == (_Bool)0 || receive == (_Bool)1)) && ((((((b == 0 || b == 1) || b == 2) || b == 3) || b == 4) || b == 5) || b == 6) [2024-01-29 23:22:08,766 INFO L98 nessWitnessExtractor]: Location invariant before [L709-L709] (0 <= b) && (b <= 6) [2024-01-29 23:22:08,767 INFO L98 nessWitnessExtractor]: Location invariant before [L709-L709] (0 <= b) && (send == (_Bool)1) [2024-01-29 23:22:08,767 INFO L98 nessWitnessExtractor]: Loop invariant at [L740-L751] (unsigned long )arg == 0UL [2024-01-29 23:22:08,767 INFO L98 nessWitnessExtractor]: Location invariant before [L760-L760] (send == (_Bool)1) && (receive == (_Bool)0) [2024-01-29 23:22:08,767 INFO L98 nessWitnessExtractor]: Location invariant before [L760-L760] send == (_Bool)1 [2024-01-29 23:22:08,767 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] receive == (_Bool)1 [2024-01-29 23:22:08,767 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] (receive == (_Bool)1) && (send == (_Bool)0 || send == (_Bool)1) [2024-01-29 23:22:08,767 INFO L98 nessWitnessExtractor]: Loop invariant at [L724-L734] (unsigned long )arg == 0UL [2024-01-29 23:22:08,768 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L732] ((unsigned long )arg == 0UL) && (send == (_Bool)0 || send == (_Bool)1) [2024-01-29 23:22:08,768 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L732] (unsigned long )arg == 0UL [2024-01-29 23:22:08,768 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L732] (((unsigned long )arg == 0UL) && (send == (_Bool)0 || send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1) [2024-01-29 23:22:08,768 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L732] (((unsigned long )arg == 0UL) && (send == (_Bool)0 || send == (_Bool)1)) && ((((((i == 6 || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) [2024-01-29 23:22:08,768 INFO L98 nessWitnessExtractor]: Location invariant before [L757-L757] send == (_Bool)0 [2024-01-29 23:22:08,768 INFO L98 nessWitnessExtractor]: Location invariant before [L757-L757] (send == (_Bool)0) && (receive == (_Bool)0) [2024-01-29 23:22:08,769 INFO L98 nessWitnessExtractor]: Location invariant before [L759-L759] send == (_Bool)0 [2024-01-29 23:22:08,769 INFO L98 nessWitnessExtractor]: Location invariant before [L759-L759] (send == (_Bool)0) && (receive == (_Bool)0) [2024-01-29 23:22:08,769 INFO L98 nessWitnessExtractor]: Location invariant before [L702-L702] (receive == (_Bool)1) && (send == (_Bool)0 || send == (_Bool)1) [2024-01-29 23:22:08,770 INFO L98 nessWitnessExtractor]: Location invariant before [L702-L702] receive == (_Bool)1 [2024-01-29 23:22:08,771 INFO L98 nessWitnessExtractor]: Location invariant before [L748-L748] (receive == (_Bool)0) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || ((((-128 <= i && 5 <= i) && i <= 6) && i <= 127) && (((((((i == -1 || i == 0) || i == 1) || i == 2) || i == 3) || i == 4) || i == 5) || i == 6))) || i == 4) [2024-01-29 23:22:08,771 INFO L98 nessWitnessExtractor]: Location invariant before [L748-L748] receive == (_Bool)0 [2024-01-29 23:22:08,771 INFO L98 nessWitnessExtractor]: Location invariant before [L748-L748] (receive == (_Bool)0) && (send == (_Bool)0 || send == (_Bool)1) [2024-01-29 23:22:08,771 INFO L98 nessWitnessExtractor]: Location invariant before [L748-L748] (receive == (_Bool)0) && ((unsigned long )arg == 0UL) [2024-01-29 23:22:08,771 INFO L98 nessWitnessExtractor]: Location invariant before [L735-L735] (i == 7) && ((unsigned long )arg == 0UL) [2024-01-29 23:22:08,772 INFO L98 nessWitnessExtractor]: Location invariant before [L735-L735] i == 7 [2024-01-29 23:22:08,772 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] 10 == max [2024-01-29 23:22:08,772 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] (10 == max) && (receive == (_Bool)0) [2024-01-29 23:22:08,772 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] (10 == max) && (send == (_Bool)0) [2024-01-29 23:22:08,772 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] (10 == max) && (max == 10) [2024-01-29 23:22:08,808 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 23:22:09,061 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30440,30453] [2024-01-29 23:22:09,070 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30895,30908] [2024-01-29 23:22:09,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 23:22:09,082 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 23:22:09,134 WARN L424 MainDispatcher]: Unable to annotate void initLog(int max) { buffer_size = max; first = next = 0; } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 23:22:09,149 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30440,30453] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 23:22:09,182 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30895,30908] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 23:22:09,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 23:22:09,276 INFO L206 MainTranslator]: Completed translation [2024-01-29 23:22:09,277 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:22:09 WrapperNode [2024-01-29 23:22:09,277 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 23:22:09,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 23:22:09,278 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 23:22:09,278 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 23:22:09,283 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 29.01 11:22:09" (1/1) ... [2024-01-29 23:22:09,300 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 29.01 11:22:09" (1/1) ... [2024-01-29 23:22:09,350 INFO L138 Inliner]: procedures = 169, calls = 38, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 259 [2024-01-29 23:22:09,350 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 23:22:09,351 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 23:22:09,351 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 23:22:09,351 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 23:22:09,365 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:22:09" (1/1) ... [2024-01-29 23:22:09,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:22:09" (1/1) ... [2024-01-29 23:22:09,369 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:22:09" (1/1) ... [2024-01-29 23:22:09,407 INFO L175 MemorySlicer]: Split 18 memory accesses to 6 slices as follows [2, 1, 3, 8, 2, 2]. 44 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 1, 0, 8, 0, 0]. The 4 writes are split as follows [0, 0, 2, 0, 1, 1]. [2024-01-29 23:22:09,407 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:22:09" (1/1) ... [2024-01-29 23:22:09,407 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:22:09" (1/1) ... [2024-01-29 23:22:09,419 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:22:09" (1/1) ... [2024-01-29 23:22:09,444 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:22:09" (1/1) ... [2024-01-29 23:22:09,446 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:22:09" (1/1) ... [2024-01-29 23:22:09,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:22:09" (1/1) ... [2024-01-29 23:22:09,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 23:22:09,451 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 23:22:09,451 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 23:22:09,451 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 23:22:09,470 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:22:09" (1/1) ... [2024-01-29 23:22:09,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 23:22:09,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 23:22:09,507 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) [2024-01-29 23:22:09,513 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 [2024-01-29 23:22:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-29 23:22:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-29 23:22:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-29 23:22:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-29 23:22:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-29 23:22:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-29 23:22:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-01-29 23:22:09,538 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-01-29 23:22:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-01-29 23:22:09,539 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-01-29 23:22:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 23:22:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 23:22:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-29 23:22:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-29 23:22:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-29 23:22:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-29 23:22:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-29 23:22:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 23:22:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 23:22:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 23:22:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-01-29 23:22:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-01-29 23:22:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-01-29 23:22:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-01-29 23:22:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-01-29 23:22:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-01-29 23:22:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 23:22:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 23:22:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-29 23:22:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-29 23:22:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-29 23:22:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-29 23:22:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-29 23:22:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 23:22:09,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 23:22:09,549 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-29 23:22:09,692 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 23:22:09,694 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 23:22:10,243 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 23:22:10,243 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 23:22:10,338 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 23:22:10,339 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-29 23:22:10,339 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 11:22:10 BoogieIcfgContainer [2024-01-29 23:22:10,339 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 23:22:10,341 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 23:22:10,341 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 23:22:10,343 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 23:22:10,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 11:22:08" (1/4) ... [2024-01-29 23:22:10,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d766ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 11:22:10, skipping insertion in model container [2024-01-29 23:22:10,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 11:22:08" (2/4) ... [2024-01-29 23:22:10,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d766ca and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 11:22:10, skipping insertion in model container [2024-01-29 23:22:10,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 11:22:09" (3/4) ... [2024-01-29 23:22:10,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d766ca and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 11:22:10, skipping insertion in model container [2024-01-29 23:22:10,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 11:22:10" (4/4) ... [2024-01-29 23:22:10,345 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2024-01-29 23:22:10,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 23:22:10,357 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 120 error locations. [2024-01-29 23:22:10,357 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 23:22:10,496 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-29 23:22:10,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 279 transitions, 572 flow [2024-01-29 23:22:10,615 INFO L124 PetriNetUnfolderBase]: 8/277 cut-off events. [2024-01-29 23:22:10,615 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-29 23:22:10,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 277 events. 8/277 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 885 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 237. Up to 2 conditions per place. [2024-01-29 23:22:10,624 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 279 transitions, 572 flow [2024-01-29 23:22:10,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 274 places, 275 transitions, 559 flow [2024-01-29 23:22:10,646 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 23:22:10,653 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;@56360876, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 23:22:10,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 224 error locations. [2024-01-29 23:22:10,655 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 23:22:10,655 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 23:22:10,655 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 23:22:10,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:22:10,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 23:22:10,656 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 221 more)] === [2024-01-29 23:22:10,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:22:10,660 INFO L85 PathProgramCache]: Analyzing trace with hash 23660, now seen corresponding path program 1 times [2024-01-29 23:22:10,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:22:10,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382996674] [2024-01-29 23:22:10,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:10,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:22:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:10,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:22:10,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382996674] [2024-01-29 23:22:10,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382996674] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:22:10,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:22:10,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 23:22:10,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196502666] [2024-01-29 23:22:10,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:22:10,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 23:22:10,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:22:10,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 23:22:10,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 23:22:11,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 279 [2024-01-29 23:22:11,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 275 transitions, 559 flow. Second operand has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:11,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:22:11,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 279 [2024-01-29 23:22:11,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:22:12,411 INFO L124 PetriNetUnfolderBase]: 3980/12421 cut-off events. [2024-01-29 23:22:12,411 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-01-29 23:22:12,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18777 conditions, 12421 events. 3980/12421 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 126641 event pairs, 3221 based on Foata normal form. 139/10369 useless extension candidates. Maximal degree in co-relation 18316. Up to 6250 conditions per place. [2024-01-29 23:22:12,488 INFO L140 encePairwiseOnDemand]: 269/279 looper letters, 80 selfloop transitions, 2 changer transitions 0/267 dead transitions. [2024-01-29 23:22:12,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 267 transitions, 707 flow [2024-01-29 23:22:12,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 23:22:12,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 23:22:12,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 651 transitions. [2024-01-29 23:22:12,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-01-29 23:22:12,505 INFO L175 Difference]: Start difference. First operand has 274 places, 275 transitions, 559 flow. Second operand 3 states and 651 transitions. [2024-01-29 23:22:12,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 267 transitions, 707 flow [2024-01-29 23:22:12,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 267 transitions, 702 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 23:22:12,517 INFO L231 Difference]: Finished difference. Result has 267 places, 267 transitions, 542 flow [2024-01-29 23:22:12,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=542, PETRI_PLACES=267, PETRI_TRANSITIONS=267} [2024-01-29 23:22:12,521 INFO L281 CegarLoopForPetriNet]: 274 programPoint places, -7 predicate places. [2024-01-29 23:22:12,521 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 267 transitions, 542 flow [2024-01-29 23:22:12,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:12,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:22:12,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-29 23:22:12,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 23:22:12,523 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 221 more)] === [2024-01-29 23:22:12,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:22:12,523 INFO L85 PathProgramCache]: Analyzing trace with hash 395076477, now seen corresponding path program 1 times [2024-01-29 23:22:12,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:22:12,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919406092] [2024-01-29 23:22:12,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:12,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:22:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:12,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:22:12,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919406092] [2024-01-29 23:22:12,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919406092] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:22:12,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:22:12,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 23:22:12,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923567875] [2024-01-29 23:22:12,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:22:12,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 23:22:12,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:22:12,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 23:22:12,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 23:22:12,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 279 [2024-01-29 23:22:12,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 267 transitions, 542 flow. Second operand has 3 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:12,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:22:12,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 279 [2024-01-29 23:22:12,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:22:12,960 INFO L124 PetriNetUnfolderBase]: 806/3885 cut-off events. [2024-01-29 23:22:12,961 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-01-29 23:22:12,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5175 conditions, 3885 events. 806/3885 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 35832 event pairs, 593 based on Foata normal form. 0/2576 useless extension candidates. Maximal degree in co-relation 5139. Up to 1249 conditions per place. [2024-01-29 23:22:12,983 INFO L140 encePairwiseOnDemand]: 273/279 looper letters, 47 selfloop transitions, 2 changer transitions 0/263 dead transitions. [2024-01-29 23:22:12,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 263 transitions, 632 flow [2024-01-29 23:22:12,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 23:22:12,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 23:22:12,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 719 transitions. [2024-01-29 23:22:12,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8590203106332138 [2024-01-29 23:22:12,988 INFO L175 Difference]: Start difference. First operand has 267 places, 267 transitions, 542 flow. Second operand 3 states and 719 transitions. [2024-01-29 23:22:12,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 263 transitions, 632 flow [2024-01-29 23:22:12,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 263 transitions, 628 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 23:22:12,994 INFO L231 Difference]: Finished difference. Result has 263 places, 263 transitions, 534 flow [2024-01-29 23:22:12,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=534, PETRI_PLACES=263, PETRI_TRANSITIONS=263} [2024-01-29 23:22:12,995 INFO L281 CegarLoopForPetriNet]: 274 programPoint places, -11 predicate places. [2024-01-29 23:22:12,995 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 263 transitions, 534 flow [2024-01-29 23:22:12,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:12,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:22:12,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-29 23:22:12,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 23:22:12,997 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 221 more)] === [2024-01-29 23:22:13,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:22:13,003 INFO L85 PathProgramCache]: Analyzing trace with hash -637530519, now seen corresponding path program 1 times [2024-01-29 23:22:13,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:22:13,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802296055] [2024-01-29 23:22:13,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:13,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:22:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:13,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:22:13,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802296055] [2024-01-29 23:22:13,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802296055] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:22:13,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:22:13,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 23:22:13,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677765915] [2024-01-29 23:22:13,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:22:13,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 23:22:13,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:22:13,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 23:22:13,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 23:22:13,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 279 [2024-01-29 23:22:13,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 263 transitions, 534 flow. Second operand has 4 states, 4 states have (on average 189.75) internal successors, (759), 4 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:13,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:22:13,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 279 [2024-01-29 23:22:13,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:22:14,219 INFO L124 PetriNetUnfolderBase]: 2655/10200 cut-off events. [2024-01-29 23:22:14,219 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-01-29 23:22:14,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14524 conditions, 10200 events. 2655/10200 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 100276 event pairs, 1275 based on Foata normal form. 0/7456 useless extension candidates. Maximal degree in co-relation 14491. Up to 2777 conditions per place. [2024-01-29 23:22:14,264 INFO L140 encePairwiseOnDemand]: 259/279 looper letters, 97 selfloop transitions, 15 changer transitions 0/295 dead transitions. [2024-01-29 23:22:14,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 295 transitions, 825 flow [2024-01-29 23:22:14,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 23:22:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 23:22:14,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 869 transitions. [2024-01-29 23:22:14,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7786738351254481 [2024-01-29 23:22:14,267 INFO L175 Difference]: Start difference. First operand has 263 places, 263 transitions, 534 flow. Second operand 4 states and 869 transitions. [2024-01-29 23:22:14,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 295 transitions, 825 flow [2024-01-29 23:22:14,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 295 transitions, 821 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 23:22:14,270 INFO L231 Difference]: Finished difference. Result has 264 places, 271 transitions, 630 flow [2024-01-29 23:22:14,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=630, PETRI_PLACES=264, PETRI_TRANSITIONS=271} [2024-01-29 23:22:14,271 INFO L281 CegarLoopForPetriNet]: 274 programPoint places, -10 predicate places. [2024-01-29 23:22:14,271 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 271 transitions, 630 flow [2024-01-29 23:22:14,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.75) internal successors, (759), 4 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:14,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:22:14,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 23:22:14,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 23:22:14,272 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 221 more)] === [2024-01-29 23:22:14,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:22:14,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1711390991, now seen corresponding path program 1 times [2024-01-29 23:22:14,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:22:14,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304192182] [2024-01-29 23:22:14,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:14,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:22:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:14,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:14,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:22:14,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304192182] [2024-01-29 23:22:14,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304192182] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:22:14,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:22:14,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 23:22:14,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232183731] [2024-01-29 23:22:14,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:22:14,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 23:22:14,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:22:14,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 23:22:14,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 23:22:14,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 279 [2024-01-29 23:22:14,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 271 transitions, 630 flow. Second operand has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:14,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:22:14,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 279 [2024-01-29 23:22:14,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:22:15,013 INFO L124 PetriNetUnfolderBase]: 1648/5753 cut-off events. [2024-01-29 23:22:15,014 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2024-01-29 23:22:15,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9038 conditions, 5753 events. 1648/5753 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 48904 event pairs, 1044 based on Foata normal form. 0/4732 useless extension candidates. Maximal degree in co-relation 5560. Up to 1670 conditions per place. [2024-01-29 23:22:15,039 INFO L140 encePairwiseOnDemand]: 264/279 looper letters, 88 selfloop transitions, 10 changer transitions 0/283 dead transitions. [2024-01-29 23:22:15,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 283 transitions, 833 flow [2024-01-29 23:22:15,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 23:22:15,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 23:22:15,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 867 transitions. [2024-01-29 23:22:15,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7768817204301075 [2024-01-29 23:22:15,041 INFO L175 Difference]: Start difference. First operand has 264 places, 271 transitions, 630 flow. Second operand 4 states and 867 transitions. [2024-01-29 23:22:15,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 283 transitions, 833 flow [2024-01-29 23:22:15,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 283 transitions, 812 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-29 23:22:15,047 INFO L231 Difference]: Finished difference. Result has 263 places, 267 transitions, 633 flow [2024-01-29 23:22:15,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=633, PETRI_PLACES=263, PETRI_TRANSITIONS=267} [2024-01-29 23:22:15,048 INFO L281 CegarLoopForPetriNet]: 274 programPoint places, -11 predicate places. [2024-01-29 23:22:15,048 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 267 transitions, 633 flow [2024-01-29 23:22:15,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:15,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:22:15,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 23:22:15,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 23:22:15,049 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 221 more)] === [2024-01-29 23:22:15,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:22:15,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1683980441, now seen corresponding path program 1 times [2024-01-29 23:22:15,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:22:15,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481773995] [2024-01-29 23:22:15,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:15,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:22:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:15,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:22:15,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481773995] [2024-01-29 23:22:15,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481773995] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:22:15,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:22:15,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 23:22:15,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422781063] [2024-01-29 23:22:15,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:22:15,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 23:22:15,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:22:15,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 23:22:15,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 23:22:15,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 279 [2024-01-29 23:22:15,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 267 transitions, 633 flow. Second operand has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:15,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:22:15,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 279 [2024-01-29 23:22:15,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:22:15,680 INFO L124 PetriNetUnfolderBase]: 1176/5069 cut-off events. [2024-01-29 23:22:15,680 INFO L125 PetriNetUnfolderBase]: For 518/556 co-relation queries the response was YES. [2024-01-29 23:22:15,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7859 conditions, 5069 events. 1176/5069 cut-off events. For 518/556 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 44869 event pairs, 489 based on Foata normal form. 89/3982 useless extension candidates. Maximal degree in co-relation 6211. Up to 1431 conditions per place. [2024-01-29 23:22:15,700 INFO L140 encePairwiseOnDemand]: 267/279 looper letters, 69 selfloop transitions, 3 changer transitions 0/274 dead transitions. [2024-01-29 23:22:15,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 274 transitions, 779 flow [2024-01-29 23:22:15,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 23:22:15,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 23:22:15,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 726 transitions. [2024-01-29 23:22:15,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8673835125448028 [2024-01-29 23:22:15,702 INFO L175 Difference]: Start difference. First operand has 263 places, 267 transitions, 633 flow. Second operand 3 states and 726 transitions. [2024-01-29 23:22:15,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 274 transitions, 779 flow [2024-01-29 23:22:15,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 274 transitions, 763 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 23:22:15,707 INFO L231 Difference]: Finished difference. Result has 258 places, 258 transitions, 590 flow [2024-01-29 23:22:15,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=590, PETRI_PLACES=258, PETRI_TRANSITIONS=258} [2024-01-29 23:22:15,707 INFO L281 CegarLoopForPetriNet]: 274 programPoint places, -16 predicate places. [2024-01-29 23:22:15,708 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 258 transitions, 590 flow [2024-01-29 23:22:15,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:15,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:22:15,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 23:22:15,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-29 23:22:15,708 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 221 more)] === [2024-01-29 23:22:15,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:22:15,709 INFO L85 PathProgramCache]: Analyzing trace with hash 663786737, now seen corresponding path program 1 times [2024-01-29 23:22:15,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:22:15,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233102066] [2024-01-29 23:22:15,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:15,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:22:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:15,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:15,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:22:15,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233102066] [2024-01-29 23:22:15,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233102066] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:22:15,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:22:15,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 23:22:15,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109105111] [2024-01-29 23:22:15,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:22:15,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 23:22:15,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:22:15,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 23:22:15,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 23:22:15,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 279 [2024-01-29 23:22:15,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 258 transitions, 590 flow. Second operand has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:15,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:22:15,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 279 [2024-01-29 23:22:15,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:22:16,621 INFO L124 PetriNetUnfolderBase]: 3033/8951 cut-off events. [2024-01-29 23:22:16,621 INFO L125 PetriNetUnfolderBase]: For 1108/1108 co-relation queries the response was YES. [2024-01-29 23:22:16,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15435 conditions, 8951 events. 3033/8951 cut-off events. For 1108/1108 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 76626 event pairs, 1361 based on Foata normal form. 62/7633 useless extension candidates. Maximal degree in co-relation 13793. Up to 1947 conditions per place. [2024-01-29 23:22:16,731 INFO L140 encePairwiseOnDemand]: 265/279 looper letters, 137 selfloop transitions, 11 changer transitions 0/299 dead transitions. [2024-01-29 23:22:16,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 299 transitions, 994 flow [2024-01-29 23:22:16,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 23:22:16,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 23:22:16,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 823 transitions. [2024-01-29 23:22:16,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7374551971326165 [2024-01-29 23:22:16,734 INFO L175 Difference]: Start difference. First operand has 258 places, 258 transitions, 590 flow. Second operand 4 states and 823 transitions. [2024-01-29 23:22:16,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 299 transitions, 994 flow [2024-01-29 23:22:16,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 299 transitions, 988 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 23:22:16,739 INFO L231 Difference]: Finished difference. Result has 258 places, 256 transitions, 607 flow [2024-01-29 23:22:16,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=607, PETRI_PLACES=258, PETRI_TRANSITIONS=256} [2024-01-29 23:22:16,740 INFO L281 CegarLoopForPetriNet]: 274 programPoint places, -16 predicate places. [2024-01-29 23:22:16,740 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 256 transitions, 607 flow [2024-01-29 23:22:16,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:16,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:22:16,741 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] [2024-01-29 23:22:16,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-29 23:22:16,741 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 221 more)] === [2024-01-29 23:22:16,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:22:16,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1629728355, now seen corresponding path program 1 times [2024-01-29 23:22:16,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:22:16,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626323982] [2024-01-29 23:22:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:16,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:22:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:16,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:16,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:22:16,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626323982] [2024-01-29 23:22:16,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626323982] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:22:16,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:22:16,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 23:22:16,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40016155] [2024-01-29 23:22:16,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:22:16,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 23:22:16,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:22:16,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 23:22:16,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 23:22:16,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 279 [2024-01-29 23:22:16,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 256 transitions, 607 flow. Second operand has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:16,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:22:16,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 279 [2024-01-29 23:22:16,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:22:17,286 INFO L124 PetriNetUnfolderBase]: 853/5284 cut-off events. [2024-01-29 23:22:17,286 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2024-01-29 23:22:17,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7330 conditions, 5284 events. 853/5284 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 48075 event pairs, 182 based on Foata normal form. 224/4076 useless extension candidates. Maximal degree in co-relation 6828. Up to 1409 conditions per place. [2024-01-29 23:22:17,311 INFO L140 encePairwiseOnDemand]: 273/279 looper letters, 50 selfloop transitions, 2 changer transitions 0/261 dead transitions. [2024-01-29 23:22:17,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 261 transitions, 723 flow [2024-01-29 23:22:17,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 23:22:17,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 23:22:17,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 968 transitions. [2024-01-29 23:22:17,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8673835125448028 [2024-01-29 23:22:17,314 INFO L175 Difference]: Start difference. First operand has 258 places, 256 transitions, 607 flow. Second operand 4 states and 968 transitions. [2024-01-29 23:22:17,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 261 transitions, 723 flow [2024-01-29 23:22:17,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 261 transitions, 701 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 23:22:17,318 INFO L231 Difference]: Finished difference. Result has 254 places, 252 transitions, 581 flow [2024-01-29 23:22:17,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=581, PETRI_PLACES=254, PETRI_TRANSITIONS=252} [2024-01-29 23:22:17,319 INFO L281 CegarLoopForPetriNet]: 274 programPoint places, -20 predicate places. [2024-01-29 23:22:17,319 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 252 transitions, 581 flow [2024-01-29 23:22:17,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:17,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:22:17,320 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] [2024-01-29 23:22:17,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-29 23:22:17,320 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 221 more)] === [2024-01-29 23:22:17,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:22:17,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1494086394, now seen corresponding path program 1 times [2024-01-29 23:22:17,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:22:17,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318987538] [2024-01-29 23:22:17,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:17,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:22:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:17,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:17,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:22:17,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318987538] [2024-01-29 23:22:17,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318987538] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:22:17,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:22:17,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 23:22:17,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426414623] [2024-01-29 23:22:17,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:22:17,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 23:22:17,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:22:17,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 23:22:17,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 23:22:17,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 279 [2024-01-29 23:22:17,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 252 transitions, 581 flow. Second operand has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:17,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:22:17,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 279 [2024-01-29 23:22:17,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:22:18,189 INFO L124 PetriNetUnfolderBase]: 2391/8728 cut-off events. [2024-01-29 23:22:18,189 INFO L125 PetriNetUnfolderBase]: For 311/311 co-relation queries the response was YES. [2024-01-29 23:22:18,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13829 conditions, 8728 events. 2391/8728 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 76161 event pairs, 1272 based on Foata normal form. 16/7182 useless extension candidates. Maximal degree in co-relation 12660. Up to 2791 conditions per place. [2024-01-29 23:22:18,221 INFO L140 encePairwiseOnDemand]: 274/279 looper letters, 108 selfloop transitions, 3 changer transitions 0/303 dead transitions. [2024-01-29 23:22:18,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 303 transitions, 923 flow [2024-01-29 23:22:18,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 23:22:18,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 23:22:18,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 957 transitions. [2024-01-29 23:22:18,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8575268817204301 [2024-01-29 23:22:18,223 INFO L175 Difference]: Start difference. First operand has 254 places, 252 transitions, 581 flow. Second operand 4 states and 957 transitions. [2024-01-29 23:22:18,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 303 transitions, 923 flow [2024-01-29 23:22:18,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 303 transitions, 920 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 23:22:18,228 INFO L231 Difference]: Finished difference. Result has 256 places, 253 transitions, 594 flow [2024-01-29 23:22:18,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=594, PETRI_PLACES=256, PETRI_TRANSITIONS=253} [2024-01-29 23:22:18,231 INFO L281 CegarLoopForPetriNet]: 274 programPoint places, -18 predicate places. [2024-01-29 23:22:18,232 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 253 transitions, 594 flow [2024-01-29 23:22:18,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:18,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:22:18,233 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] [2024-01-29 23:22:18,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-29 23:22:18,233 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 221 more)] === [2024-01-29 23:22:18,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:22:18,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1498684240, now seen corresponding path program 1 times [2024-01-29 23:22:18,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:22:18,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340542696] [2024-01-29 23:22:18,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:18,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:22:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:18,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:18,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:22:18,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340542696] [2024-01-29 23:22:18,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340542696] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:22:18,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:22:18,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 23:22:18,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144989486] [2024-01-29 23:22:18,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:22:18,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 23:22:18,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:22:18,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 23:22:18,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 23:22:18,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 279 [2024-01-29 23:22:18,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 253 transitions, 594 flow. Second operand has 4 states, 4 states have (on average 231.25) internal successors, (925), 4 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:18,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:22:18,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 279 [2024-01-29 23:22:18,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:22:18,841 INFO L124 PetriNetUnfolderBase]: 1167/5834 cut-off events. [2024-01-29 23:22:18,841 INFO L125 PetriNetUnfolderBase]: For 468/513 co-relation queries the response was YES. [2024-01-29 23:22:18,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8937 conditions, 5834 events. 1167/5834 cut-off events. For 468/513 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 50953 event pairs, 159 based on Foata normal form. 335/4978 useless extension candidates. Maximal degree in co-relation 8511. Up to 1818 conditions per place. [2024-01-29 23:22:18,868 INFO L140 encePairwiseOnDemand]: 273/279 looper letters, 75 selfloop transitions, 2 changer transitions 0/282 dead transitions. [2024-01-29 23:22:18,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 282 transitions, 839 flow [2024-01-29 23:22:18,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 23:22:18,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 23:22:18,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 990 transitions. [2024-01-29 23:22:18,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8870967741935484 [2024-01-29 23:22:18,870 INFO L175 Difference]: Start difference. First operand has 256 places, 253 transitions, 594 flow. Second operand 4 states and 990 transitions. [2024-01-29 23:22:18,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 282 transitions, 839 flow [2024-01-29 23:22:18,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 282 transitions, 829 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 23:22:18,875 INFO L231 Difference]: Finished difference. Result has 253 places, 249 transitions, 586 flow [2024-01-29 23:22:18,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=586, PETRI_PLACES=253, PETRI_TRANSITIONS=249} [2024-01-29 23:22:18,876 INFO L281 CegarLoopForPetriNet]: 274 programPoint places, -21 predicate places. [2024-01-29 23:22:18,876 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 249 transitions, 586 flow [2024-01-29 23:22:18,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 231.25) internal successors, (925), 4 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:18,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:22:18,877 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] [2024-01-29 23:22:18,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-29 23:22:18,877 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err37ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 221 more)] === [2024-01-29 23:22:18,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:22:18,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1421478476, now seen corresponding path program 1 times [2024-01-29 23:22:18,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:22:18,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583679267] [2024-01-29 23:22:18,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:18,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:22:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:18,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:22:18,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583679267] [2024-01-29 23:22:18,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583679267] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:22:18,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:22:18,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 23:22:18,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214283258] [2024-01-29 23:22:18,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:22:18,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 23:22:18,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:22:18,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 23:22:18,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 23:22:18,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 279 [2024-01-29 23:22:18,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 249 transitions, 586 flow. Second operand has 3 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:18,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:22:18,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 279 [2024-01-29 23:22:18,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:22:19,552 INFO L124 PetriNetUnfolderBase]: 1800/9217 cut-off events. [2024-01-29 23:22:19,552 INFO L125 PetriNetUnfolderBase]: For 708/772 co-relation queries the response was YES. [2024-01-29 23:22:19,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13999 conditions, 9217 events. 1800/9217 cut-off events. For 708/772 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 89986 event pairs, 1065 based on Foata normal form. 54/7283 useless extension candidates. Maximal degree in co-relation 13717. Up to 2162 conditions per place. [2024-01-29 23:22:19,587 INFO L140 encePairwiseOnDemand]: 276/279 looper letters, 73 selfloop transitions, 2 changer transitions 0/279 dead transitions. [2024-01-29 23:22:19,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 279 transitions, 816 flow [2024-01-29 23:22:19,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 23:22:19,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 23:22:19,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 767 transitions. [2024-01-29 23:22:19,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9163679808841099 [2024-01-29 23:22:19,590 INFO L175 Difference]: Start difference. First operand has 253 places, 249 transitions, 586 flow. Second operand 3 states and 767 transitions. [2024-01-29 23:22:19,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 279 transitions, 816 flow [2024-01-29 23:22:19,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 279 transitions, 813 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 23:22:19,594 INFO L231 Difference]: Finished difference. Result has 254 places, 250 transitions, 595 flow [2024-01-29 23:22:19,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=595, PETRI_PLACES=254, PETRI_TRANSITIONS=250} [2024-01-29 23:22:19,595 INFO L281 CegarLoopForPetriNet]: 274 programPoint places, -20 predicate places. [2024-01-29 23:22:19,595 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 250 transitions, 595 flow [2024-01-29 23:22:19,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:19,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:22:19,596 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] [2024-01-29 23:22:19,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-29 23:22:19,596 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 221 more)] === [2024-01-29 23:22:19,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:22:19,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1116159813, now seen corresponding path program 1 times [2024-01-29 23:22:19,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:22:19,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466139911] [2024-01-29 23:22:19,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:19,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:22:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:19,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:19,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:22:19,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466139911] [2024-01-29 23:22:19,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466139911] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:22:19,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:22:19,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 23:22:19,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117242048] [2024-01-29 23:22:19,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:22:19,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 23:22:19,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:22:19,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 23:22:19,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 23:22:19,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 279 [2024-01-29 23:22:19,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 250 transitions, 595 flow. Second operand has 4 states, 4 states have (on average 212.75) internal successors, (851), 4 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:19,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:22:19,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 279 [2024-01-29 23:22:19,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:22:20,810 INFO L124 PetriNetUnfolderBase]: 3758/15291 cut-off events. [2024-01-29 23:22:20,820 INFO L125 PetriNetUnfolderBase]: For 1342/1518 co-relation queries the response was YES. [2024-01-29 23:22:20,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24972 conditions, 15291 events. 3758/15291 cut-off events. For 1342/1518 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 159672 event pairs, 2163 based on Foata normal form. 54/12716 useless extension candidates. Maximal degree in co-relation 24512. Up to 4398 conditions per place. [2024-01-29 23:22:20,877 INFO L140 encePairwiseOnDemand]: 275/279 looper letters, 125 selfloop transitions, 3 changer transitions 0/313 dead transitions. [2024-01-29 23:22:20,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 313 transitions, 1016 flow [2024-01-29 23:22:20,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 23:22:20,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 23:22:20,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 960 transitions. [2024-01-29 23:22:20,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8602150537634409 [2024-01-29 23:22:20,880 INFO L175 Difference]: Start difference. First operand has 254 places, 250 transitions, 595 flow. Second operand 4 states and 960 transitions. [2024-01-29 23:22:20,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 313 transitions, 1016 flow [2024-01-29 23:22:20,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 313 transitions, 1014 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 23:22:20,886 INFO L231 Difference]: Finished difference. Result has 257 places, 250 transitions, 603 flow [2024-01-29 23:22:20,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=603, PETRI_PLACES=257, PETRI_TRANSITIONS=250} [2024-01-29 23:22:20,887 INFO L281 CegarLoopForPetriNet]: 274 programPoint places, -17 predicate places. [2024-01-29 23:22:20,887 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 250 transitions, 603 flow [2024-01-29 23:22:20,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 212.75) internal successors, (851), 4 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:20,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:22:20,887 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] [2024-01-29 23:22:20,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-29 23:22:20,888 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 221 more)] === [2024-01-29 23:22:20,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:22:20,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1760629173, now seen corresponding path program 1 times [2024-01-29 23:22:20,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:22:20,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583436256] [2024-01-29 23:22:20,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:20,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:22:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:20,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:20,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:22:20,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583436256] [2024-01-29 23:22:20,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583436256] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:22:20,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:22:20,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 23:22:20,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855360943] [2024-01-29 23:22:20,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:22:20,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-29 23:22:20,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:22:20,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-29 23:22:20,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-29 23:22:21,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 279 [2024-01-29 23:22:21,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 250 transitions, 603 flow. Second operand has 5 states, 5 states have (on average 185.4) internal successors, (927), 5 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:21,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:22:21,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 279 [2024-01-29 23:22:21,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:22:22,753 INFO L124 PetriNetUnfolderBase]: 5170/17558 cut-off events. [2024-01-29 23:22:22,753 INFO L125 PetriNetUnfolderBase]: For 2725/2725 co-relation queries the response was YES. [2024-01-29 23:22:22,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30843 conditions, 17558 events. 5170/17558 cut-off events. For 2725/2725 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 178140 event pairs, 2074 based on Foata normal form. 20/14547 useless extension candidates. Maximal degree in co-relation 29983. Up to 5622 conditions per place. [2024-01-29 23:22:22,837 INFO L140 encePairwiseOnDemand]: 269/279 looper letters, 158 selfloop transitions, 6 changer transitions 0/326 dead transitions. [2024-01-29 23:22:22,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 326 transitions, 1143 flow [2024-01-29 23:22:22,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 23:22:22,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 23:22:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1068 transitions. [2024-01-29 23:22:22,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7655913978494624 [2024-01-29 23:22:22,840 INFO L175 Difference]: Start difference. First operand has 257 places, 250 transitions, 603 flow. Second operand 5 states and 1068 transitions. [2024-01-29 23:22:22,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 326 transitions, 1143 flow [2024-01-29 23:22:22,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 326 transitions, 1122 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 23:22:22,848 INFO L231 Difference]: Finished difference. Result has 259 places, 251 transitions, 626 flow [2024-01-29 23:22:22,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=626, PETRI_PLACES=259, PETRI_TRANSITIONS=251} [2024-01-29 23:22:22,849 INFO L281 CegarLoopForPetriNet]: 274 programPoint places, -15 predicate places. [2024-01-29 23:22:22,849 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 251 transitions, 626 flow [2024-01-29 23:22:22,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 185.4) internal successors, (927), 5 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:22,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:22:22,850 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] [2024-01-29 23:22:22,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-29 23:22:22,850 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 221 more)] === [2024-01-29 23:22:22,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:22:22,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1255071359, now seen corresponding path program 1 times [2024-01-29 23:22:22,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:22:22,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117415062] [2024-01-29 23:22:22,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:22,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:22:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:22,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:22,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:22:22,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117415062] [2024-01-29 23:22:22,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117415062] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:22:22,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:22:22,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 23:22:22,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129500260] [2024-01-29 23:22:22,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:22:22,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-29 23:22:22,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:22:22,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-29 23:22:22,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-29 23:22:23,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 279 [2024-01-29 23:22:23,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 251 transitions, 626 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:23,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:22:23,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 279 [2024-01-29 23:22:23,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:22:25,587 INFO L124 PetriNetUnfolderBase]: 12174/31090 cut-off events. [2024-01-29 23:22:25,587 INFO L125 PetriNetUnfolderBase]: For 6800/6960 co-relation queries the response was YES. [2024-01-29 23:22:25,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59980 conditions, 31090 events. 12174/31090 cut-off events. For 6800/6960 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 291855 event pairs, 4401 based on Foata normal form. 96/28146 useless extension candidates. Maximal degree in co-relation 59560. Up to 13340 conditions per place. [2024-01-29 23:22:25,729 INFO L140 encePairwiseOnDemand]: 259/279 looper letters, 163 selfloop transitions, 15 changer transitions 0/307 dead transitions. [2024-01-29 23:22:25,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 307 transitions, 1144 flow [2024-01-29 23:22:25,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 23:22:25,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 23:22:25,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 923 transitions. [2024-01-29 23:22:25,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6616487455197133 [2024-01-29 23:22:25,731 INFO L175 Difference]: Start difference. First operand has 259 places, 251 transitions, 626 flow. Second operand 5 states and 923 transitions. [2024-01-29 23:22:25,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 307 transitions, 1144 flow [2024-01-29 23:22:25,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 307 transitions, 1138 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 23:22:25,741 INFO L231 Difference]: Finished difference. Result has 259 places, 256 transitions, 702 flow [2024-01-29 23:22:25,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=702, PETRI_PLACES=259, PETRI_TRANSITIONS=256} [2024-01-29 23:22:25,742 INFO L281 CegarLoopForPetriNet]: 274 programPoint places, -15 predicate places. [2024-01-29 23:22:25,742 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 256 transitions, 702 flow [2024-01-29 23:22:25,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:25,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:22:25,742 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] [2024-01-29 23:22:25,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-29 23:22:25,743 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 221 more)] === [2024-01-29 23:22:25,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:22:25,743 INFO L85 PathProgramCache]: Analyzing trace with hash 120818520, now seen corresponding path program 1 times [2024-01-29 23:22:25,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:22:25,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590098794] [2024-01-29 23:22:25,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:25,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:22:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:25,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:25,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:22:25,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590098794] [2024-01-29 23:22:25,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590098794] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:22:25,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:22:25,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-29 23:22:25,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682693398] [2024-01-29 23:22:25,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:22:25,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-29 23:22:25,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:22:25,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-29 23:22:25,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-29 23:22:26,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 279 [2024-01-29 23:22:26,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 256 transitions, 702 flow. Second operand has 6 states, 6 states have (on average 151.33333333333334) internal successors, (908), 6 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:26,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:22:26,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 279 [2024-01-29 23:22:26,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:22:28,733 INFO L124 PetriNetUnfolderBase]: 14529/31712 cut-off events. [2024-01-29 23:22:28,734 INFO L125 PetriNetUnfolderBase]: For 7369/7708 co-relation queries the response was YES. [2024-01-29 23:22:28,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67159 conditions, 31712 events. 14529/31712 cut-off events. For 7369/7708 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 274852 event pairs, 7626 based on Foata normal form. 164/29282 useless extension candidates. Maximal degree in co-relation 66561. Up to 13771 conditions per place. [2024-01-29 23:22:29,249 INFO L140 encePairwiseOnDemand]: 267/279 looper letters, 215 selfloop transitions, 10 changer transitions 0/354 dead transitions. [2024-01-29 23:22:29,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 354 transitions, 1419 flow [2024-01-29 23:22:29,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-29 23:22:29,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-29 23:22:29,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1100 transitions. [2024-01-29 23:22:29,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571087216248507 [2024-01-29 23:22:29,270 INFO L175 Difference]: Start difference. First operand has 259 places, 256 transitions, 702 flow. Second operand 6 states and 1100 transitions. [2024-01-29 23:22:29,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 354 transitions, 1419 flow [2024-01-29 23:22:29,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 354 transitions, 1397 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 23:22:29,281 INFO L231 Difference]: Finished difference. Result has 264 places, 261 transitions, 761 flow [2024-01-29 23:22:29,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=761, PETRI_PLACES=264, PETRI_TRANSITIONS=261} [2024-01-29 23:22:29,296 INFO L281 CegarLoopForPetriNet]: 274 programPoint places, -10 predicate places. [2024-01-29 23:22:29,296 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 261 transitions, 761 flow [2024-01-29 23:22:29,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.33333333333334) internal successors, (908), 6 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:29,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:22:29,296 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] [2024-01-29 23:22:29,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-29 23:22:29,297 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err8ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 221 more)] === [2024-01-29 23:22:29,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:22:29,297 INFO L85 PathProgramCache]: Analyzing trace with hash 609760786, now seen corresponding path program 1 times [2024-01-29 23:22:29,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:22:29,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740450630] [2024-01-29 23:22:29,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:29,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:22:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:29,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:22:29,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740450630] [2024-01-29 23:22:29,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740450630] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:22:29,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:22:29,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-29 23:22:29,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949506564] [2024-01-29 23:22:29,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:22:29,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-29 23:22:29,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:22:29,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-29 23:22:29,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-29 23:22:30,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 279 [2024-01-29 23:22:30,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 261 transitions, 761 flow. Second operand has 6 states, 6 states have (on average 149.83333333333334) internal successors, (899), 6 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:30,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:22:30,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 279 [2024-01-29 23:22:30,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:22:33,274 INFO L124 PetriNetUnfolderBase]: 13527/33664 cut-off events. [2024-01-29 23:22:33,274 INFO L125 PetriNetUnfolderBase]: For 12699/12699 co-relation queries the response was YES. [2024-01-29 23:22:33,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70276 conditions, 33664 events. 13527/33664 cut-off events. For 12699/12699 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 315543 event pairs, 6324 based on Foata normal form. 40/31196 useless extension candidates. Maximal degree in co-relation 69354. Up to 14889 conditions per place. [2024-01-29 23:22:33,484 INFO L140 encePairwiseOnDemand]: 272/279 looper letters, 216 selfloop transitions, 9 changer transitions 0/350 dead transitions. [2024-01-29 23:22:33,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 350 transitions, 1513 flow [2024-01-29 23:22:33,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-29 23:22:33,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-29 23:22:33,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1074 transitions. [2024-01-29 23:22:33,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6415770609318996 [2024-01-29 23:22:33,490 INFO L175 Difference]: Start difference. First operand has 264 places, 261 transitions, 761 flow. Second operand 6 states and 1074 transitions. [2024-01-29 23:22:33,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 350 transitions, 1513 flow [2024-01-29 23:22:33,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 350 transitions, 1505 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 23:22:33,512 INFO L231 Difference]: Finished difference. Result has 268 places, 261 transitions, 777 flow [2024-01-29 23:22:33,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=777, PETRI_PLACES=268, PETRI_TRANSITIONS=261} [2024-01-29 23:22:33,513 INFO L281 CegarLoopForPetriNet]: 274 programPoint places, -6 predicate places. [2024-01-29 23:22:33,513 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 261 transitions, 777 flow [2024-01-29 23:22:33,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.83333333333334) internal successors, (899), 6 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:33,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:22:33,514 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] [2024-01-29 23:22:33,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-29 23:22:33,514 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err11ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 221 more)] === [2024-01-29 23:22:33,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:22:33,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1967764844, now seen corresponding path program 1 times [2024-01-29 23:22:33,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:22:33,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671783877] [2024-01-29 23:22:33,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:33,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:22:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:33,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:22:33,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671783877] [2024-01-29 23:22:33,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671783877] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:22:33,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:22:33,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 23:22:33,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289117568] [2024-01-29 23:22:33,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:22:33,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-29 23:22:33,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:22:33,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-29 23:22:33,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-29 23:22:33,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 279 [2024-01-29 23:22:33,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 261 transitions, 777 flow. Second operand has 5 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:33,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:22:33,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 279 [2024-01-29 23:22:33,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:22:35,875 INFO L124 PetriNetUnfolderBase]: 5671/17340 cut-off events. [2024-01-29 23:22:35,875 INFO L125 PetriNetUnfolderBase]: For 4783/5079 co-relation queries the response was YES. [2024-01-29 23:22:35,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34106 conditions, 17340 events. 5671/17340 cut-off events. For 4783/5079 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 169582 event pairs, 3130 based on Foata normal form. 1040/16866 useless extension candidates. Maximal degree in co-relation 33580. Up to 6017 conditions per place. [2024-01-29 23:22:35,938 INFO L140 encePairwiseOnDemand]: 240/279 looper letters, 161 selfloop transitions, 12 changer transitions 0/319 dead transitions. [2024-01-29 23:22:35,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 319 transitions, 1329 flow [2024-01-29 23:22:35,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 23:22:35,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 23:22:35,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1049 transitions. [2024-01-29 23:22:35,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7519713261648745 [2024-01-29 23:22:35,940 INFO L175 Difference]: Start difference. First operand has 268 places, 261 transitions, 777 flow. Second operand 5 states and 1049 transitions. [2024-01-29 23:22:35,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 319 transitions, 1329 flow [2024-01-29 23:22:35,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 319 transitions, 1311 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-29 23:22:35,950 INFO L231 Difference]: Finished difference. Result has 269 places, 264 transitions, 858 flow [2024-01-29 23:22:35,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=858, PETRI_PLACES=269, PETRI_TRANSITIONS=264} [2024-01-29 23:22:35,951 INFO L281 CegarLoopForPetriNet]: 274 programPoint places, -5 predicate places. [2024-01-29 23:22:35,951 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 264 transitions, 858 flow [2024-01-29 23:22:35,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:35,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:22:35,952 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] [2024-01-29 23:22:35,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-29 23:22:35,952 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err12ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 221 more)] === [2024-01-29 23:22:35,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:22:35,952 INFO L85 PathProgramCache]: Analyzing trace with hash 871168921, now seen corresponding path program 1 times [2024-01-29 23:22:35,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:22:35,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860364326] [2024-01-29 23:22:35,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:35,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:22:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:36,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:36,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:22:36,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860364326] [2024-01-29 23:22:36,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860364326] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 23:22:36,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 23:22:36,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-29 23:22:36,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543754098] [2024-01-29 23:22:36,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 23:22:36,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-29 23:22:36,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:22:36,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-29 23:22:36,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-29 23:22:36,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 279 [2024-01-29 23:22:36,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 264 transitions, 858 flow. Second operand has 5 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:36,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:22:36,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 279 [2024-01-29 23:22:36,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:22:37,926 INFO L124 PetriNetUnfolderBase]: 4440/14791 cut-off events. [2024-01-29 23:22:37,926 INFO L125 PetriNetUnfolderBase]: For 4623/4669 co-relation queries the response was YES. [2024-01-29 23:22:37,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29541 conditions, 14791 events. 4440/14791 cut-off events. For 4623/4669 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 146273 event pairs, 1918 based on Foata normal form. 0/13555 useless extension candidates. Maximal degree in co-relation 28818. Up to 3819 conditions per place. [2024-01-29 23:22:37,987 INFO L140 encePairwiseOnDemand]: 266/279 looper letters, 159 selfloop transitions, 9 changer transitions 0/320 dead transitions. [2024-01-29 23:22:37,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 320 transitions, 1366 flow [2024-01-29 23:22:37,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-29 23:22:37,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-29 23:22:37,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1018 transitions. [2024-01-29 23:22:37,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7297491039426524 [2024-01-29 23:22:37,989 INFO L175 Difference]: Start difference. First operand has 269 places, 264 transitions, 858 flow. Second operand 5 states and 1018 transitions. [2024-01-29 23:22:37,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 320 transitions, 1366 flow [2024-01-29 23:22:38,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 320 transitions, 1357 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 23:22:38,002 INFO L231 Difference]: Finished difference. Result has 273 places, 264 transitions, 883 flow [2024-01-29 23:22:38,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=883, PETRI_PLACES=273, PETRI_TRANSITIONS=264} [2024-01-29 23:22:38,003 INFO L281 CegarLoopForPetriNet]: 274 programPoint places, -1 predicate places. [2024-01-29 23:22:38,003 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 264 transitions, 883 flow [2024-01-29 23:22:38,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 175.6) internal successors, (878), 5 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:38,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:22:38,003 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] [2024-01-29 23:22:38,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-29 23:22:38,004 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err37ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 221 more)] === [2024-01-29 23:22:38,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:22:38,004 INFO L85 PathProgramCache]: Analyzing trace with hash -612377997, now seen corresponding path program 1 times [2024-01-29 23:22:38,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:22:38,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059431222] [2024-01-29 23:22:38,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:38,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:22:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:38,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:38,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:22:38,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059431222] [2024-01-29 23:22:38,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059431222] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 23:22:38,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162558238] [2024-01-29 23:22:38,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:38,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 23:22:38,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 23:22:38,053 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) [2024-01-29 23:22:38,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-29 23:22:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:38,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-29 23:22:38,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 23:22:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:38,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 23:22:38,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:38,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162558238] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 23:22:38,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 23:22:38,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-01-29 23:22:38,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084816732] [2024-01-29 23:22:38,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 23:22:38,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-29 23:22:38,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:22:38,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-29 23:22:38,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-29 23:22:38,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 279 [2024-01-29 23:22:38,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 264 transitions, 883 flow. Second operand has 7 states, 7 states have (on average 229.28571428571428) internal successors, (1605), 7 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:38,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:22:38,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 279 [2024-01-29 23:22:38,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:22:41,053 INFO L124 PetriNetUnfolderBase]: 6135/23192 cut-off events. [2024-01-29 23:22:41,053 INFO L125 PetriNetUnfolderBase]: For 9765/10320 co-relation queries the response was YES. [2024-01-29 23:22:41,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46012 conditions, 23192 events. 6135/23192 cut-off events. For 9765/10320 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 254463 event pairs, 1181 based on Foata normal form. 453/21952 useless extension candidates. Maximal degree in co-relation 44976. Up to 2655 conditions per place. [2024-01-29 23:22:41,155 INFO L140 encePairwiseOnDemand]: 275/279 looper letters, 206 selfloop transitions, 8 changer transitions 0/415 dead transitions. [2024-01-29 23:22:41,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 415 transitions, 1930 flow [2024-01-29 23:22:41,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-29 23:22:41,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-29 23:22:41,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1524 transitions. [2024-01-29 23:22:41,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.910394265232975 [2024-01-29 23:22:41,158 INFO L175 Difference]: Start difference. First operand has 273 places, 264 transitions, 883 flow. Second operand 6 states and 1524 transitions. [2024-01-29 23:22:41,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 415 transitions, 1930 flow [2024-01-29 23:22:41,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 415 transitions, 1889 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 23:22:41,185 INFO L231 Difference]: Finished difference. Result has 279 places, 267 transitions, 917 flow [2024-01-29 23:22:41,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=917, PETRI_PLACES=279, PETRI_TRANSITIONS=267} [2024-01-29 23:22:41,185 INFO L281 CegarLoopForPetriNet]: 274 programPoint places, 5 predicate places. [2024-01-29 23:22:41,185 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 267 transitions, 917 flow [2024-01-29 23:22:41,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 229.28571428571428) internal successors, (1605), 7 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:41,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:22:41,186 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-01-29 23:22:41,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-01-29 23:22:41,397 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,SelfDestructingSolverStorable17 [2024-01-29 23:22:41,397 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 221 more)] === [2024-01-29 23:22:41,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:22:41,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1803848740, now seen corresponding path program 1 times [2024-01-29 23:22:41,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:22:41,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246550330] [2024-01-29 23:22:41,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:41,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:22:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:41,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:41,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:22:41,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246550330] [2024-01-29 23:22:41,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246550330] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 23:22:41,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676470390] [2024-01-29 23:22:41,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:41,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 23:22:41,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 23:22:41,558 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) [2024-01-29 23:22:41,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-29 23:22:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:41,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-29 23:22:41,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 23:22:41,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:41,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 23:22:42,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:42,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676470390] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 23:22:42,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 23:22:42,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-01-29 23:22:42,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143058126] [2024-01-29 23:22:42,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 23:22:42,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-29 23:22:42,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:22:42,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-29 23:22:42,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-29 23:22:42,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 279 [2024-01-29 23:22:42,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 267 transitions, 917 flow. Second operand has 10 states, 10 states have (on average 212.2) internal successors, (2122), 10 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:42,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:22:42,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 279 [2024-01-29 23:22:42,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:22:45,783 INFO L124 PetriNetUnfolderBase]: 9882/26955 cut-off events. [2024-01-29 23:22:45,784 INFO L125 PetriNetUnfolderBase]: For 13588/14362 co-relation queries the response was YES. [2024-01-29 23:22:45,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59574 conditions, 26955 events. 9882/26955 cut-off events. For 13588/14362 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 274278 event pairs, 1103 based on Foata normal form. 515/25981 useless extension candidates. Maximal degree in co-relation 58164. Up to 4497 conditions per place. [2024-01-29 23:22:45,930 INFO L140 encePairwiseOnDemand]: 274/279 looper letters, 289 selfloop transitions, 10 changer transitions 0/485 dead transitions. [2024-01-29 23:22:45,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 485 transitions, 2331 flow [2024-01-29 23:22:45,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-29 23:22:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-29 23:22:45,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1915 transitions. [2024-01-29 23:22:45,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8579749103942652 [2024-01-29 23:22:45,942 INFO L175 Difference]: Start difference. First operand has 279 places, 267 transitions, 917 flow. Second operand 8 states and 1915 transitions. [2024-01-29 23:22:45,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 485 transitions, 2331 flow [2024-01-29 23:22:45,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 485 transitions, 2317 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-29 23:22:45,973 INFO L231 Difference]: Finished difference. Result has 283 places, 266 transitions, 919 flow [2024-01-29 23:22:45,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=919, PETRI_PLACES=283, PETRI_TRANSITIONS=266} [2024-01-29 23:22:45,973 INFO L281 CegarLoopForPetriNet]: 274 programPoint places, 9 predicate places. [2024-01-29 23:22:45,974 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 266 transitions, 919 flow [2024-01-29 23:22:45,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 212.2) internal successors, (2122), 10 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:45,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 23:22:45,974 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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] [2024-01-29 23:22:45,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-01-29 23:22:46,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 23:22:46,186 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 221 more)] === [2024-01-29 23:22:46,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 23:22:46,186 INFO L85 PathProgramCache]: Analyzing trace with hash 173996183, now seen corresponding path program 1 times [2024-01-29 23:22:46,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 23:22:46,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063138234] [2024-01-29 23:22:46,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:46,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 23:22:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:46,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:46,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 23:22:46,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063138234] [2024-01-29 23:22:46,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063138234] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-29 23:22:46,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922282226] [2024-01-29 23:22:46,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 23:22:46,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-29 23:22:46,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 23:22:46,448 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-29 23:22:46,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-29 23:22:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 23:22:46,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-29 23:22:46,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-29 23:22:46,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:46,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-29 23:22:47,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 23:22:47,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922282226] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-29 23:22:47,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-29 23:22:47,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 14 [2024-01-29 23:22:47,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998822097] [2024-01-29 23:22:47,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-29 23:22:47,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-01-29 23:22:47,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 23:22:47,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-01-29 23:22:47,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2024-01-29 23:22:49,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 279 [2024-01-29 23:22:49,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 266 transitions, 919 flow. Second operand has 15 states, 15 states have (on average 135.33333333333334) internal successors, (2030), 15 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 23:22:49,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 23:22:49,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 279 [2024-01-29 23:22:49,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 23:23:04,668 INFO L124 PetriNetUnfolderBase]: 60256/128510 cut-off events. [2024-01-29 23:23:04,668 INFO L125 PetriNetUnfolderBase]: For 57014/59519 co-relation queries the response was YES. [2024-01-29 23:23:05,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296116 conditions, 128510 events. 60256/128510 cut-off events. For 57014/59519 co-relation queries the response was YES. Maximal size of possible extension queue 948. Compared 1283253 event pairs, 14014 based on Foata normal form. 6405/132737 useless extension candidates. Maximal degree in co-relation 294465. Up to 29117 conditions per place. [2024-01-29 23:23:05,555 INFO L140 encePairwiseOnDemand]: 245/279 looper letters, 796 selfloop transitions, 93 changer transitions 0/1002 dead transitions. [2024-01-29 23:23:05,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 1002 transitions, 5114 flow [2024-01-29 23:23:05,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-01-29 23:23:05,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-01-29 23:23:05,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3581 transitions. [2024-01-29 23:23:05,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111964499061273 [2024-01-29 23:23:05,560 INFO L175 Difference]: Start difference. First operand has 283 places, 266 transitions, 919 flow. Second operand 21 states and 3581 transitions. [2024-01-29 23:23:05,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 1002 transitions, 5114 flow