./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/test-hard1.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d8006e4b Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c ./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/test-hard1.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-d8006e4-m [2024-02-05 10:36:46,643 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-05 10:36:46,704 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-05 10:36:46,717 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-05 10:36:46,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-05 10:36:46,759 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-05 10:36:46,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-05 10:36:46,763 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-05 10:36:46,764 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-05 10:36:46,766 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-05 10:36:46,766 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-05 10:36:46,766 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-05 10:36:46,767 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-05 10:36:46,767 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-05 10:36:46,768 INFO L153 SettingsManager]: * Use SBE=true [2024-02-05 10:36:46,768 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-05 10:36:46,769 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-05 10:36:46,769 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-05 10:36:46,769 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-05 10:36:46,770 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-05 10:36:46,770 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-05 10:36:46,772 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-05 10:36:46,772 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-05 10:36:46,772 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-05 10:36:46,772 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-05 10:36:46,773 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-05 10:36:46,780 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-05 10:36:46,780 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-05 10:36:46,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-05 10:36:46,782 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-05 10:36:46,782 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-05 10:36:46,783 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-05 10:36:46,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:36:46,783 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-05 10:36:46,784 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-05 10:36:46,784 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-05 10:36:46,784 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-05 10:36:46,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-05 10:36:46,785 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-05 10:36:46,785 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-05 10:36:46,785 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-05 10:36:46,786 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-05 10:36:46,786 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-05 10:36:46,786 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-05 10:36:47,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-05 10:36:47,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-05 10:36:47,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-05 10:36:47,076 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-05 10:36:47,077 INFO L274 PluginConnector]: CDTParser initialized [2024-02-05 10:36:47,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c [2024-02-05 10:36:48,331 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-05 10:36:48,532 INFO L384 CDTParser]: Found 1 translation units. [2024-02-05 10:36:48,533 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c [2024-02-05 10:36:48,540 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f40784610/6624c79ff46f45da9ab127795a2bf21a/FLAG08dd0e824 [2024-02-05 10:36:48,555 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f40784610/6624c79ff46f45da9ab127795a2bf21a [2024-02-05 10:36:48,557 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-05 10:36:48,558 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-05 10:36:48,559 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/test-hard1.wvr.yml/witness.yml [2024-02-05 10:36:48,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-05 10:36:48,714 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-05 10:36:48,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-05 10:36:48,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-05 10:36:48,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-05 10:36:48,720 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:36:48" (1/2) ... [2024-02-05 10:36:48,721 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c78fe57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:36:48, skipping insertion in model container [2024-02-05 10:36:48,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:36:48" (1/2) ... [2024-02-05 10:36:48,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5764e15d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:36:48, skipping insertion in model container [2024-02-05 10:36:48,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:36:48" (2/2) ... [2024-02-05 10:36:48,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c78fe57 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:36:48, skipping insertion in model container [2024-02-05 10:36:48,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:36:48" (2/2) ... [2024-02-05 10:36:48,724 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-05 10:36:48,763 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-05 10:36:48,765 INFO L101 nessWitnessExtractor]: Location invariant before [L82-L82] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,765 INFO L101 nessWitnessExtractor]: Location invariant before [L71-L71] (n1 <= 2147483645) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:36:48,765 INFO L101 nessWitnessExtractor]: Location invariant before [L107-L107] ((2 <= n2) && ((unsigned long )_argptr == 0UL)) && (n2 != 0) [2024-02-05 10:36:48,765 INFO L101 nessWitnessExtractor]: Location invariant before [L43-L43] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,765 INFO L101 nessWitnessExtractor]: Location invariant before [L121-L121] ((((p1 == 0U) && (p2 == 0U)) && (m == 0U)) && (n1 == 0)) && (n2 == 0) [2024-02-05 10:36:48,766 INFO L101 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,766 INFO L101 nessWitnessExtractor]: Location invariant before [L87-L87] ((1 <= n2) && ((unsigned long )_argptr == 0UL)) && (n2 != 0) [2024-02-05 10:36:48,766 INFO L101 nessWitnessExtractor]: Location invariant before [L123-L123] ((m == 0U) && (n1 == 0)) && (n2 == 0) [2024-02-05 10:36:48,767 INFO L101 nessWitnessExtractor]: Location invariant before [L72-L72] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,767 INFO L101 nessWitnessExtractor]: Location invariant before [L115-L115] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,767 INFO L101 nessWitnessExtractor]: Loop invariant at [L65-L65] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,767 INFO L101 nessWitnessExtractor]: Location invariant before [L50-L50] ((1 <= n1) && ((unsigned long )_argptr == 0UL)) && (n1 != 0) [2024-02-05 10:36:48,767 INFO L101 nessWitnessExtractor]: Location invariant before [L55-L55] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,767 INFO L101 nessWitnessExtractor]: Location invariant after [L101-L101] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,767 INFO L101 nessWitnessExtractor]: Location invariant before [L68-L68] ((2 <= n1) && ((unsigned long )_argptr == 0UL)) && (n1 != 0) [2024-02-05 10:36:48,768 INFO L101 nessWitnessExtractor]: Loop invariant at [L103-L103] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,768 INFO L101 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,768 INFO L101 nessWitnessExtractor]: Location invariant before [L58-L58] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,768 INFO L101 nessWitnessExtractor]: Location invariant before [L52-L52] (n1 <= 2147483646) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:36:48,768 INFO L101 nessWitnessExtractor]: Location invariant before [L102-L102] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,768 INFO L101 nessWitnessExtractor]: Location invariant before [L85-L85] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,769 INFO L101 nessWitnessExtractor]: Location invariant before [L111-L111] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,769 INFO L101 nessWitnessExtractor]: Location invariant before [L49-L49] ((1 <= n1) && ((unsigned long )_argptr == 0UL)) && (n1 != 0) [2024-02-05 10:36:48,769 INFO L101 nessWitnessExtractor]: Location invariant after [L44-L44] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,769 INFO L101 nessWitnessExtractor]: Location invariant before [L112-L112] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,770 INFO L101 nessWitnessExtractor]: Location invariant before [L86-L86] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,770 INFO L101 nessWitnessExtractor]: Location invariant after [L82-L82] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,770 INFO L101 nessWitnessExtractor]: Location invariant before [L106-L106] ((2 <= n2) && ((unsigned long )_argptr == 0UL)) && (n2 != 0) [2024-02-05 10:36:48,770 INFO L101 nessWitnessExtractor]: Location invariant before [L110-L110] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,770 INFO L101 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,770 INFO L101 nessWitnessExtractor]: Location invariant before [L93-L93] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,770 INFO L101 nessWitnessExtractor]: Location invariant before [L67-L67] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,771 INFO L101 nessWitnessExtractor]: Location invariant before [L109-L109] (n2 <= 2147483645) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:36:48,771 INFO L101 nessWitnessExtractor]: Location invariant before [L88-L88] ((1 <= n2) && ((unsigned long )_argptr == 0UL)) && (n2 != 0) [2024-02-05 10:36:48,771 INFO L101 nessWitnessExtractor]: Location invariant before [L69-L69] ((2 <= n1) && ((unsigned long )_argptr == 0UL)) && (n1 != 0) [2024-02-05 10:36:48,771 INFO L101 nessWitnessExtractor]: Location invariant before [L101-L101] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,772 INFO L101 nessWitnessExtractor]: Location invariant before [L104-L104] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,772 INFO L101 nessWitnessExtractor]: Loop invariant at [L46-L46] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,774 INFO L101 nessWitnessExtractor]: Location invariant before [L62-L62] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,774 INFO L101 nessWitnessExtractor]: Location invariant before [L105-L105] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,774 INFO L101 nessWitnessExtractor]: Location invariant before [L77-L77] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,774 INFO L101 nessWitnessExtractor]: Location invariant before [L53-L53] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,774 INFO L101 nessWitnessExtractor]: Location invariant before [L47-L47] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,774 INFO L101 nessWitnessExtractor]: Location invariant before [L44-L44] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,775 INFO L101 nessWitnessExtractor]: Location invariant before [L91-L91] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,775 INFO L101 nessWitnessExtractor]: Location invariant before [L125-L125] m == 0U [2024-02-05 10:36:48,775 INFO L101 nessWitnessExtractor]: Location invariant before [L83-L83] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,776 INFO L101 nessWitnessExtractor]: Location invariant before [L90-L90] (n2 <= 2147483646) && ((unsigned long )_argptr == 0UL) [2024-02-05 10:36:48,776 INFO L101 nessWitnessExtractor]: Location invariant before [L73-L73] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,776 INFO L101 nessWitnessExtractor]: Location invariant before [L122-L122] (((p2 == 0U) && (m == 0U)) && (n1 == 0)) && (n2 == 0) [2024-02-05 10:36:48,776 INFO L101 nessWitnessExtractor]: Location invariant before [L100-L100] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,776 INFO L101 nessWitnessExtractor]: Location invariant before [L96-L96] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,777 INFO L101 nessWitnessExtractor]: Location invariant after [L63-L63] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,777 INFO L101 nessWitnessExtractor]: Location invariant before [L124-L124] (m == 0U) && (n2 == 0) [2024-02-05 10:36:48,777 INFO L101 nessWitnessExtractor]: Location invariant before [L64-L64] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,778 INFO L101 nessWitnessExtractor]: Location invariant before [L74-L74] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,778 INFO L101 nessWitnessExtractor]: Location invariant before [L63-L63] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,778 INFO L101 nessWitnessExtractor]: Loop invariant at [L84-L84] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,778 INFO L101 nessWitnessExtractor]: Location invariant before [L92-L92] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,779 INFO L101 nessWitnessExtractor]: Location invariant before [L54-L54] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,779 INFO L101 nessWitnessExtractor]: Location invariant before [L81-L81] (unsigned long )_argptr == 0UL [2024-02-05 10:36:48,806 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-02-05 10:36:48,995 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c[3425,3438] [2024-02-05 10:36:48,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:36:49,009 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-05 10:36:49,047 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-05 10:36:49,047 WARN L424 MainDispatcher]: Unable to annotate cond = n1 > 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 [2024-02-05 10:36:49,056 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-05 10:36:49,057 WARN L424 MainDispatcher]: Unable to annotate cond = n1 > 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 [2024-02-05 10:36:49,065 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-05 10:36:49,066 WARN L424 MainDispatcher]: Unable to annotate cond = n2 > 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 [2024-02-05 10:36:49,080 WARN L424 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-05 10:36:49,094 WARN L424 MainDispatcher]: Unable to annotate cond = n2 > 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 [2024-02-05 10:36:49,117 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c[3425,3438] [2024-02-05 10:36:49,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:36:49,134 INFO L208 MainTranslator]: Completed translation [2024-02-05 10:36:49,139 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:36:49 WrapperNode [2024-02-05 10:36:49,139 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-05 10:36:49,140 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-05 10:36:49,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-05 10:36:49,141 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-05 10:36:49,148 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 05.02 10:36:49" (1/1) ... [2024-02-05 10:36:49,165 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 05.02 10:36:49" (1/1) ... [2024-02-05 10:36:49,208 INFO L138 Inliner]: procedures = 24, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 102 [2024-02-05 10:36:49,209 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-05 10:36:49,209 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-05 10:36:49,210 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-05 10:36:49,210 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-05 10:36:49,221 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:36:49" (1/1) ... [2024-02-05 10:36:49,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:36:49" (1/1) ... [2024-02-05 10:36:49,225 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:36:49" (1/1) ... [2024-02-05 10:36:49,246 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-02-05 10:36:49,246 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:36:49" (1/1) ... [2024-02-05 10:36:49,247 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:36:49" (1/1) ... [2024-02-05 10:36:49,261 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:36:49" (1/1) ... [2024-02-05 10:36:49,282 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:36:49" (1/1) ... [2024-02-05 10:36:49,285 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:36:49" (1/1) ... [2024-02-05 10:36:49,286 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:36:49" (1/1) ... [2024-02-05 10:36:49,306 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-05 10:36:49,307 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-05 10:36:49,307 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-05 10:36:49,307 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-05 10:36:49,313 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:36:49" (1/1) ... [2024-02-05 10:36:49,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:36:49,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-05 10:36:49,356 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) [2024-02-05 10:36:49,363 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 [2024-02-05 10:36:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-05 10:36:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-05 10:36:49,407 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-05 10:36:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-05 10:36:49,407 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-05 10:36:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-05 10:36:49,407 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-05 10:36:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-05 10:36:49,408 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-05 10:36:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-05 10:36:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-05 10:36:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-05 10:36:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-05 10:36:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-05 10:36:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-05 10:36:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-05 10:36:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-05 10:36:49,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-05 10:36:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-05 10:36:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-05 10:36:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-05 10:36:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-05 10:36:49,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-05 10:36:49,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-05 10:36:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-05 10:36:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-05 10:36:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-05 10:36:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-05 10:36:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-05 10:36:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-05 10:36:49,416 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-05 10:36:49,556 INFO L244 CfgBuilder]: Building ICFG [2024-02-05 10:36:49,558 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-05 10:36:50,015 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-05 10:36:50,015 INFO L293 CfgBuilder]: Performing block encoding [2024-02-05 10:36:50,239 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-05 10:36:50,240 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-02-05 10:36:50,241 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:36:50 BoogieIcfgContainer [2024-02-05 10:36:50,241 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-05 10:36:50,245 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-05 10:36:50,245 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-05 10:36:50,249 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-05 10:36:50,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:36:48" (1/4) ... [2024-02-05 10:36:50,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b512e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:36:50, skipping insertion in model container [2024-02-05 10:36:50,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:36:48" (2/4) ... [2024-02-05 10:36:50,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b512e42 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:36:50, skipping insertion in model container [2024-02-05 10:36:50,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:36:49" (3/4) ... [2024-02-05 10:36:50,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b512e42 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:36:50, skipping insertion in model container [2024-02-05 10:36:50,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:36:50" (4/4) ... [2024-02-05 10:36:50,254 INFO L112 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2024-02-05 10:36:50,280 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-05 10:36:50,280 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2024-02-05 10:36:50,280 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-05 10:36:50,395 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-05 10:36:50,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 129 transitions, 286 flow [2024-02-05 10:36:50,545 INFO L124 PetriNetUnfolderBase]: 8/125 cut-off events. [2024-02-05 10:36:50,546 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-05 10:36:50,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 125 events. 8/125 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 476 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 109. Up to 2 conditions per place. [2024-02-05 10:36:50,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 129 transitions, 286 flow [2024-02-05 10:36:50,563 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 124 transitions, 272 flow [2024-02-05 10:36:50,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-05 10:36:50,597 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;@77c75fda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-05 10:36:50,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 106 error locations. [2024-02-05 10:36:50,600 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-05 10:36:50,600 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-05 10:36:50,600 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:36:50,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:50,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-05 10:36:50,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-02-05 10:36:50,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:50,609 INFO L85 PathProgramCache]: Analyzing trace with hash 18789, now seen corresponding path program 1 times [2024-02-05 10:36:50,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:50,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006955576] [2024-02-05 10:36:50,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:50,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:51,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:36:51,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:51,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006955576] [2024-02-05 10:36:51,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006955576] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:51,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:51,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:36:51,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102737742] [2024-02-05 10:36:51,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:51,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:36:51,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:51,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:36:51,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:36:51,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 129 [2024-02-05 10:36:51,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 124 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:51,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:51,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 129 [2024-02-05 10:36:51,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:36:57,019 INFO L124 PetriNetUnfolderBase]: 35361/52922 cut-off events. [2024-02-05 10:36:57,020 INFO L125 PetriNetUnfolderBase]: For 585/585 co-relation queries the response was YES. [2024-02-05 10:36:57,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100584 conditions, 52922 events. 35361/52922 cut-off events. For 585/585 co-relation queries the response was YES. Maximal size of possible extension queue 3203. Compared 459702 event pairs, 30429 based on Foata normal form. 4932/32374 useless extension candidates. Maximal degree in co-relation 90940. Up to 45901 conditions per place. [2024-02-05 10:36:57,520 INFO L140 encePairwiseOnDemand]: 110/129 looper letters, 56 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2024-02-05 10:36:57,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 107 transitions, 354 flow [2024-02-05 10:36:57,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:36:57,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:36:57,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2024-02-05 10:36:57,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6046511627906976 [2024-02-05 10:36:57,536 INFO L175 Difference]: Start difference. First operand has 129 places, 124 transitions, 272 flow. Second operand 3 states and 234 transitions. [2024-02-05 10:36:57,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 107 transitions, 354 flow [2024-02-05 10:36:58,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 107 transitions, 338 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-05 10:36:58,196 INFO L231 Difference]: Finished difference. Result has 110 places, 107 transitions, 226 flow [2024-02-05 10:36:58,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=110, PETRI_TRANSITIONS=107} [2024-02-05 10:36:58,205 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -19 predicate places. [2024-02-05 10:36:58,206 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 107 transitions, 226 flow [2024-02-05 10:36:58,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:58,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:58,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-05 10:36:58,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-05 10:36:58,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-02-05 10:36:58,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:58,207 INFO L85 PathProgramCache]: Analyzing trace with hash 583071, now seen corresponding path program 1 times [2024-02-05 10:36:58,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:58,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505782389] [2024-02-05 10:36:58,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:58,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:36:58,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:58,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505782389] [2024-02-05 10:36:58,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505782389] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:58,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:58,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-05 10:36:58,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440193515] [2024-02-05 10:36:58,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:58,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:36:58,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:58,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:36:58,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:36:58,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 129 [2024-02-05 10:36:58,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 107 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:36:58,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:58,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 129 [2024-02-05 10:36:58,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:37:03,113 INFO L124 PetriNetUnfolderBase]: 35361/52921 cut-off events. [2024-02-05 10:37:03,114 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:37:03,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99411 conditions, 52921 events. 35361/52921 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3203. Compared 459386 event pairs, 30429 based on Foata normal form. 0/27442 useless extension candidates. Maximal degree in co-relation 99402. Up to 45897 conditions per place. [2024-02-05 10:37:03,786 INFO L140 encePairwiseOnDemand]: 125/129 looper letters, 54 selfloop transitions, 3 changer transitions 0/106 dead transitions. [2024-02-05 10:37:03,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 106 transitions, 338 flow [2024-02-05 10:37:03,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:37:03,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:37:03,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 274 transitions. [2024-02-05 10:37:03,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5310077519379846 [2024-02-05 10:37:03,794 INFO L175 Difference]: Start difference. First operand has 110 places, 107 transitions, 226 flow. Second operand 4 states and 274 transitions. [2024-02-05 10:37:03,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 106 transitions, 338 flow [2024-02-05 10:37:03,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 106 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:37:03,798 INFO L231 Difference]: Finished difference. Result has 110 places, 106 transitions, 226 flow [2024-02-05 10:37:03,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=110, PETRI_TRANSITIONS=106} [2024-02-05 10:37:03,799 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -19 predicate places. [2024-02-05 10:37:03,799 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 106 transitions, 226 flow [2024-02-05 10:37:03,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:03,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:37:03,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-05 10:37:03,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-05 10:37:03,800 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-02-05 10:37:03,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:37:03,801 INFO L85 PathProgramCache]: Analyzing trace with hash 18075782, now seen corresponding path program 1 times [2024-02-05 10:37:03,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:37:03,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212734700] [2024-02-05 10:37:03,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:37:03,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:37:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:37:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:37:03,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:37:03,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212734700] [2024-02-05 10:37:03,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212734700] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:37:03,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:37:03,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-05 10:37:03,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003830691] [2024-02-05 10:37:03,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:37:03,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:37:03,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:37:03,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:37:03,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:37:03,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 129 [2024-02-05 10:37:03,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 106 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:03,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:37:03,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 129 [2024-02-05 10:37:03,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:37:07,913 INFO L124 PetriNetUnfolderBase]: 35361/52920 cut-off events. [2024-02-05 10:37:07,913 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:37:08,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99410 conditions, 52920 events. 35361/52920 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3206. Compared 460113 event pairs, 30429 based on Foata normal form. 1/27443 useless extension candidates. Maximal degree in co-relation 99396. Up to 45897 conditions per place. [2024-02-05 10:37:08,382 INFO L140 encePairwiseOnDemand]: 126/129 looper letters, 54 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2024-02-05 10:37:08,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 105 transitions, 336 flow [2024-02-05 10:37:08,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:37:08,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:37:08,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2024-02-05 10:37:08,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5736434108527132 [2024-02-05 10:37:08,385 INFO L175 Difference]: Start difference. First operand has 110 places, 106 transitions, 226 flow. Second operand 3 states and 222 transitions. [2024-02-05 10:37:08,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 105 transitions, 336 flow [2024-02-05 10:37:08,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 105 transitions, 330 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-05 10:37:08,390 INFO L231 Difference]: Finished difference. Result has 108 places, 105 transitions, 222 flow [2024-02-05 10:37:08,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=108, PETRI_TRANSITIONS=105} [2024-02-05 10:37:08,392 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -21 predicate places. [2024-02-05 10:37:08,392 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 105 transitions, 222 flow [2024-02-05 10:37:08,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:08,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:37:08,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-05 10:37:08,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-05 10:37:08,398 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-02-05 10:37:08,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:37:08,399 INFO L85 PathProgramCache]: Analyzing trace with hash 560349873, now seen corresponding path program 1 times [2024-02-05 10:37:08,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:37:08,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587285272] [2024-02-05 10:37:08,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:37:08,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:37:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:37:08,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:37:08,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:37:08,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587285272] [2024-02-05 10:37:08,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587285272] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:37:08,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:37:08,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-05 10:37:08,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232189309] [2024-02-05 10:37:08,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:37:08,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:37:08,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:37:08,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:37:08,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:37:08,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 129 [2024-02-05 10:37:08,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:08,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:37:08,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 129 [2024-02-05 10:37:08,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:37:12,968 INFO L124 PetriNetUnfolderBase]: 35361/52919 cut-off events. [2024-02-05 10:37:12,968 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:37:13,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99407 conditions, 52919 events. 35361/52919 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3206. Compared 459815 event pairs, 30429 based on Foata normal form. 0/27442 useless extension candidates. Maximal degree in co-relation 99394. Up to 45895 conditions per place. [2024-02-05 10:37:13,442 INFO L140 encePairwiseOnDemand]: 126/129 looper letters, 53 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2024-02-05 10:37:13,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 104 transitions, 330 flow [2024-02-05 10:37:13,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:37:13,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:37:13,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2024-02-05 10:37:13,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5788113695090439 [2024-02-05 10:37:13,444 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 222 flow. Second operand 3 states and 224 transitions. [2024-02-05 10:37:13,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 104 transitions, 330 flow [2024-02-05 10:37:13,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 104 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:37:13,451 INFO L231 Difference]: Finished difference. Result has 107 places, 104 transitions, 220 flow [2024-02-05 10:37:13,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=107, PETRI_TRANSITIONS=104} [2024-02-05 10:37:13,455 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -22 predicate places. [2024-02-05 10:37:13,455 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 104 transitions, 220 flow [2024-02-05 10:37:13,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:13,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:37:13,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-05 10:37:13,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-05 10:37:13,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-02-05 10:37:13,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:37:13,457 INFO L85 PathProgramCache]: Analyzing trace with hash 190977516, now seen corresponding path program 1 times [2024-02-05 10:37:13,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:37:13,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613188825] [2024-02-05 10:37:13,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:37:13,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:37:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:37:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:37:13,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:37:13,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613188825] [2024-02-05 10:37:13,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613188825] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:37:13,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:37:13,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-05 10:37:13,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547200887] [2024-02-05 10:37:13,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:37:13,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:37:13,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:37:13,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:37:13,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:37:13,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 129 [2024-02-05 10:37:13,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 104 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:13,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:37:13,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 129 [2024-02-05 10:37:13,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:37:17,855 INFO L124 PetriNetUnfolderBase]: 35361/52918 cut-off events. [2024-02-05 10:37:17,856 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:37:17,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99405 conditions, 52918 events. 35361/52918 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3206. Compared 459715 event pairs, 30429 based on Foata normal form. 0/27442 useless extension candidates. Maximal degree in co-relation 99390. Up to 45893 conditions per place. [2024-02-05 10:37:18,485 INFO L140 encePairwiseOnDemand]: 126/129 looper letters, 52 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2024-02-05 10:37:18,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 103 transitions, 326 flow [2024-02-05 10:37:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:37:18,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:37:18,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2024-02-05 10:37:18,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5839793281653747 [2024-02-05 10:37:18,487 INFO L175 Difference]: Start difference. First operand has 107 places, 104 transitions, 220 flow. Second operand 3 states and 226 transitions. [2024-02-05 10:37:18,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 103 transitions, 326 flow [2024-02-05 10:37:18,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 103 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:37:18,491 INFO L231 Difference]: Finished difference. Result has 106 places, 103 transitions, 218 flow [2024-02-05 10:37:18,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=106, PETRI_TRANSITIONS=103} [2024-02-05 10:37:18,494 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -23 predicate places. [2024-02-05 10:37:18,494 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 103 transitions, 218 flow [2024-02-05 10:37:18,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:18,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:37:18,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:37:18,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-05 10:37:18,496 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-02-05 10:37:18,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:37:18,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1419719713, now seen corresponding path program 1 times [2024-02-05 10:37:18,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:37:18,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034282206] [2024-02-05 10:37:18,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:37:18,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:37:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:37:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:37:18,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:37:18,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034282206] [2024-02-05 10:37:18,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034282206] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:37:18,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:37:18,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:37:18,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68519444] [2024-02-05 10:37:18,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:37:18,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:37:18,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:37:18,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:37:18,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:37:18,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 129 [2024-02-05 10:37:18,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 103 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:18,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:37:18,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 129 [2024-02-05 10:37:18,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:37:21,830 INFO L124 PetriNetUnfolderBase]: 27357/42970 cut-off events. [2024-02-05 10:37:21,831 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-02-05 10:37:21,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78967 conditions, 42970 events. 27357/42970 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 2550. Compared 380206 event pairs, 8245 based on Foata normal form. 4680/30834 useless extension candidates. Maximal degree in co-relation 78950. Up to 31544 conditions per place. [2024-02-05 10:37:22,191 INFO L140 encePairwiseOnDemand]: 119/129 looper letters, 81 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2024-02-05 10:37:22,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 126 transitions, 433 flow [2024-02-05 10:37:22,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:37:22,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:37:22,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 299 transitions. [2024-02-05 10:37:22,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5794573643410853 [2024-02-05 10:37:22,194 INFO L175 Difference]: Start difference. First operand has 106 places, 103 transitions, 218 flow. Second operand 4 states and 299 transitions. [2024-02-05 10:37:22,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 126 transitions, 433 flow [2024-02-05 10:37:22,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 126 transitions, 429 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:37:22,197 INFO L231 Difference]: Finished difference. Result has 99 places, 95 transitions, 202 flow [2024-02-05 10:37:22,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=99, PETRI_TRANSITIONS=95} [2024-02-05 10:37:22,198 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -30 predicate places. [2024-02-05 10:37:22,199 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 95 transitions, 202 flow [2024-02-05 10:37:22,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:22,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:37:22,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:37:22,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-05 10:37:22,200 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-02-05 10:37:22,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:37:22,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1446775725, now seen corresponding path program 1 times [2024-02-05 10:37:22,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:37:22,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655084529] [2024-02-05 10:37:22,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:37:22,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:37:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:37:22,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:37:22,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:37:22,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655084529] [2024-02-05 10:37:22,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655084529] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:37:22,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:37:22,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:37:22,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902247959] [2024-02-05 10:37:22,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:37:22,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:37:22,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:37:22,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:37:22,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:37:22,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 129 [2024-02-05 10:37:22,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 95 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:22,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:37:22,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 129 [2024-02-05 10:37:22,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:37:24,098 INFO L124 PetriNetUnfolderBase]: 17587/28947 cut-off events. [2024-02-05 10:37:24,098 INFO L125 PetriNetUnfolderBase]: For 383/383 co-relation queries the response was YES. [2024-02-05 10:37:24,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52125 conditions, 28947 events. 17587/28947 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 1740. Compared 252764 event pairs, 7585 based on Foata normal form. 3432/22608 useless extension candidates. Maximal degree in co-relation 52104. Up to 19986 conditions per place. [2024-02-05 10:37:24,241 INFO L140 encePairwiseOnDemand]: 119/129 looper letters, 80 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2024-02-05 10:37:24,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 120 transitions, 419 flow [2024-02-05 10:37:24,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:37:24,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:37:24,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 298 transitions. [2024-02-05 10:37:24,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5775193798449613 [2024-02-05 10:37:24,243 INFO L175 Difference]: Start difference. First operand has 99 places, 95 transitions, 202 flow. Second operand 4 states and 298 transitions. [2024-02-05 10:37:24,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 120 transitions, 419 flow [2024-02-05 10:37:24,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 120 transitions, 416 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:37:24,245 INFO L231 Difference]: Finished difference. Result has 92 places, 87 transitions, 187 flow [2024-02-05 10:37:24,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=92, PETRI_TRANSITIONS=87} [2024-02-05 10:37:24,246 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -37 predicate places. [2024-02-05 10:37:24,246 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 87 transitions, 187 flow [2024-02-05 10:37:24,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:24,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:37:24,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:37:24,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-05 10:37:24,247 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-02-05 10:37:24,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:37:24,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1221115866, now seen corresponding path program 1 times [2024-02-05 10:37:24,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:37:24,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305830709] [2024-02-05 10:37:24,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:37:24,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:37:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:37:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:37:24,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:37:24,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305830709] [2024-02-05 10:37:24,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305830709] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:37:24,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:37:24,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:37:24,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841722746] [2024-02-05 10:37:24,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:37:24,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:37:24,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:37:24,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:37:24,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:37:24,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 129 [2024-02-05 10:37:24,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 87 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:24,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:37:24,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 129 [2024-02-05 10:37:24,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:37:25,474 INFO L124 PetriNetUnfolderBase]: 11059/16746 cut-off events. [2024-02-05 10:37:25,474 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2024-02-05 10:37:25,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31360 conditions, 16746 events. 11059/16746 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 119553 event pairs, 4079 based on Foata normal form. 2184/14667 useless extension candidates. Maximal degree in co-relation 31340. Up to 12420 conditions per place. [2024-02-05 10:37:25,554 INFO L140 encePairwiseOnDemand]: 119/129 looper letters, 79 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2024-02-05 10:37:25,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 114 transitions, 406 flow [2024-02-05 10:37:25,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:37:25,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:37:25,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2024-02-05 10:37:25,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5755813953488372 [2024-02-05 10:37:25,558 INFO L175 Difference]: Start difference. First operand has 92 places, 87 transitions, 187 flow. Second operand 4 states and 297 transitions. [2024-02-05 10:37:25,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 114 transitions, 406 flow [2024-02-05 10:37:25,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 114 transitions, 403 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:37:25,560 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 172 flow [2024-02-05 10:37:25,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2024-02-05 10:37:25,561 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -44 predicate places. [2024-02-05 10:37:25,561 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 172 flow [2024-02-05 10:37:25,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:25,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:37:25,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:37:25,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-05 10:37:25,562 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-02-05 10:37:25,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:37:25,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2073926865, now seen corresponding path program 1 times [2024-02-05 10:37:25,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:37:25,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723364003] [2024-02-05 10:37:25,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:37:25,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:37:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:37:25,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:37:25,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:37:25,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723364003] [2024-02-05 10:37:25,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723364003] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:37:25,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:37:25,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:37:25,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653684241] [2024-02-05 10:37:25,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:37:25,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:37:25,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:37:25,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:37:25,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:37:25,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 129 [2024-02-05 10:37:25,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:25,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:37:25,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 129 [2024-02-05 10:37:25,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:37:26,783 INFO L124 PetriNetUnfolderBase]: 12459/17504 cut-off events. [2024-02-05 10:37:26,783 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-02-05 10:37:26,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34362 conditions, 17504 events. 12459/17504 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 981. Compared 118036 event pairs, 1739 based on Foata normal form. 0/14111 useless extension candidates. Maximal degree in co-relation 30409. Up to 13320 conditions per place. [2024-02-05 10:37:26,857 INFO L140 encePairwiseOnDemand]: 125/129 looper letters, 70 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-02-05 10:37:26,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 101 transitions, 365 flow [2024-02-05 10:37:26,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:37:26,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:37:26,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2024-02-05 10:37:26,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174418604651163 [2024-02-05 10:37:26,859 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 172 flow. Second operand 4 states and 267 transitions. [2024-02-05 10:37:26,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 101 transitions, 365 flow [2024-02-05 10:37:26,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 101 transitions, 360 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:37:26,861 INFO L231 Difference]: Finished difference. Result has 84 places, 77 transitions, 169 flow [2024-02-05 10:37:26,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=84, PETRI_TRANSITIONS=77} [2024-02-05 10:37:26,861 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -45 predicate places. [2024-02-05 10:37:26,861 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 77 transitions, 169 flow [2024-02-05 10:37:26,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:26,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:37:26,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:37:26,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-05 10:37:26,862 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-02-05 10:37:26,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:37:26,863 INFO L85 PathProgramCache]: Analyzing trace with hash -968494454, now seen corresponding path program 1 times [2024-02-05 10:37:26,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:37:26,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067221214] [2024-02-05 10:37:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:37:26,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:37:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:37:26,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:37:26,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:37:26,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067221214] [2024-02-05 10:37:26,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067221214] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:37:26,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:37:26,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:37:26,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551706722] [2024-02-05 10:37:26,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:37:26,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:37:26,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:37:26,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:37:26,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:37:26,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 129 [2024-02-05 10:37:26,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:26,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:37:26,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 129 [2024-02-05 10:37:26,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:37:27,375 INFO L124 PetriNetUnfolderBase]: 4765/7665 cut-off events. [2024-02-05 10:37:27,376 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2024-02-05 10:37:27,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14037 conditions, 7665 events. 4765/7665 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 54245 event pairs, 343 based on Foata normal form. 848/7665 useless extension candidates. Maximal degree in co-relation 14016. Up to 4784 conditions per place. [2024-02-05 10:37:27,411 INFO L140 encePairwiseOnDemand]: 119/129 looper letters, 72 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2024-02-05 10:37:27,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 102 transitions, 370 flow [2024-02-05 10:37:27,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:37:27,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:37:27,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 290 transitions. [2024-02-05 10:37:27,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.562015503875969 [2024-02-05 10:37:27,413 INFO L175 Difference]: Start difference. First operand has 84 places, 77 transitions, 169 flow. Second operand 4 states and 290 transitions. [2024-02-05 10:37:27,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 102 transitions, 370 flow [2024-02-05 10:37:27,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 102 transitions, 367 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:37:27,414 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 154 flow [2024-02-05 10:37:27,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-02-05 10:37:27,415 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -52 predicate places. [2024-02-05 10:37:27,415 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 154 flow [2024-02-05 10:37:27,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:27,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:37:27,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:37:27,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-05 10:37:27,416 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-02-05 10:37:27,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:37:27,416 INFO L85 PathProgramCache]: Analyzing trace with hash -745361126, now seen corresponding path program 1 times [2024-02-05 10:37:27,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:37:27,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307531169] [2024-02-05 10:37:27,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:37:27,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:37:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:37:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:37:27,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:37:27,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307531169] [2024-02-05 10:37:27,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307531169] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:37:27,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:37:27,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:37:27,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790830753] [2024-02-05 10:37:27,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:37:27,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:37:27,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:37:27,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:37:27,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:37:27,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 129 [2024-02-05 10:37:27,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:27,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:37:27,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 129 [2024-02-05 10:37:27,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:37:27,934 INFO L124 PetriNetUnfolderBase]: 5985/8501 cut-off events. [2024-02-05 10:37:27,935 INFO L125 PetriNetUnfolderBase]: For 252/252 co-relation queries the response was YES. [2024-02-05 10:37:27,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16892 conditions, 8501 events. 5985/8501 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 52534 event pairs, 907 based on Foata normal form. 0/7929 useless extension candidates. Maximal degree in co-relation 16872. Up to 6210 conditions per place. [2024-02-05 10:37:27,969 INFO L140 encePairwiseOnDemand]: 125/129 looper letters, 60 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2024-02-05 10:37:27,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 86 transitions, 317 flow [2024-02-05 10:37:27,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:37:27,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:37:27,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 257 transitions. [2024-02-05 10:37:27,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49806201550387597 [2024-02-05 10:37:27,971 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 154 flow. Second operand 4 states and 257 transitions. [2024-02-05 10:37:27,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 86 transitions, 317 flow [2024-02-05 10:37:27,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 86 transitions, 312 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:37:27,973 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 151 flow [2024-02-05 10:37:27,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2024-02-05 10:37:27,974 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -53 predicate places. [2024-02-05 10:37:27,974 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 151 flow [2024-02-05 10:37:27,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:27,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:37:27,974 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, 1, 1, 1, 1] [2024-02-05 10:37:27,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-05 10:37:27,975 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-02-05 10:37:27,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:37:27,975 INFO L85 PathProgramCache]: Analyzing trace with hash -480796110, now seen corresponding path program 1 times [2024-02-05 10:37:27,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:37:27,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747813093] [2024-02-05 10:37:27,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:37:27,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:37:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:37:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:37:28,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:37:28,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747813093] [2024-02-05 10:37:28,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747813093] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:37:28,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:37:28,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:37:28,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148983823] [2024-02-05 10:37:28,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:37:28,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:37:28,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:37:28,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:37:28,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:37:28,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 129 [2024-02-05 10:37:28,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:28,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:37:28,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 129 [2024-02-05 10:37:28,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:37:28,378 INFO L124 PetriNetUnfolderBase]: 3661/6063 cut-off events. [2024-02-05 10:37:28,378 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-02-05 10:37:28,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11066 conditions, 6063 events. 3661/6063 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 39859 event pairs, 656 based on Foata normal form. 1/5710 useless extension candidates. Maximal degree in co-relation 11045. Up to 3884 conditions per place. [2024-02-05 10:37:28,405 INFO L140 encePairwiseOnDemand]: 121/129 looper letters, 56 selfloop transitions, 7 changer transitions 1/93 dead transitions. [2024-02-05 10:37:28,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 93 transitions, 338 flow [2024-02-05 10:37:28,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:37:28,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:37:28,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2024-02-05 10:37:28,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6175710594315246 [2024-02-05 10:37:28,407 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 151 flow. Second operand 3 states and 239 transitions. [2024-02-05 10:37:28,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 93 transitions, 338 flow [2024-02-05 10:37:28,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 93 transitions, 335 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:37:28,409 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 187 flow [2024-02-05 10:37:28,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2024-02-05 10:37:28,409 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -52 predicate places. [2024-02-05 10:37:28,409 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 187 flow [2024-02-05 10:37:28,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:28,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:37:28,410 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:37:28,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-05 10:37:28,410 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-02-05 10:37:28,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:37:28,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2145642083, now seen corresponding path program 1 times [2024-02-05 10:37:28,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:37:28,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85073259] [2024-02-05 10:37:28,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:37:28,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:37:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:37:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:37:28,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:37:28,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85073259] [2024-02-05 10:37:28,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85073259] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:37:28,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:37:28,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:37:28,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597329288] [2024-02-05 10:37:28,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:37:28,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-05 10:37:28,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:37:28,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-05 10:37:28,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-05 10:37:28,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 129 [2024-02-05 10:37:28,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:28,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:37:28,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 129 [2024-02-05 10:37:28,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:37:29,858 INFO L124 PetriNetUnfolderBase]: 13110/19673 cut-off events. [2024-02-05 10:37:29,858 INFO L125 PetriNetUnfolderBase]: For 3427/3427 co-relation queries the response was YES. [2024-02-05 10:37:29,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42111 conditions, 19673 events. 13110/19673 cut-off events. For 3427/3427 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 141309 event pairs, 2902 based on Foata normal form. 0/18378 useless extension candidates. Maximal degree in co-relation 42086. Up to 5931 conditions per place. [2024-02-05 10:37:29,978 INFO L140 encePairwiseOnDemand]: 120/129 looper letters, 141 selfloop transitions, 17 changer transitions 0/184 dead transitions. [2024-02-05 10:37:29,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 184 transitions, 823 flow [2024-02-05 10:37:29,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:37:29,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:37:29,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 471 transitions. [2024-02-05 10:37:29,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6085271317829457 [2024-02-05 10:37:29,980 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 187 flow. Second operand 6 states and 471 transitions. [2024-02-05 10:37:29,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 184 transitions, 823 flow [2024-02-05 10:37:29,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 184 transitions, 802 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-05 10:37:29,986 INFO L231 Difference]: Finished difference. Result has 86 places, 87 transitions, 326 flow [2024-02-05 10:37:29,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=326, PETRI_PLACES=86, PETRI_TRANSITIONS=87} [2024-02-05 10:37:29,986 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -43 predicate places. [2024-02-05 10:37:29,987 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 87 transitions, 326 flow [2024-02-05 10:37:29,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:29,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:37:29,987 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:37:29,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-05 10:37:29,987 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-02-05 10:37:29,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:37:29,988 INFO L85 PathProgramCache]: Analyzing trace with hash -168529523, now seen corresponding path program 2 times [2024-02-05 10:37:29,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:37:29,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987035245] [2024-02-05 10:37:29,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:37:29,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:37:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:37:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:37:30,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:37:30,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987035245] [2024-02-05 10:37:30,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987035245] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:37:30,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:37:30,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:37:30,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952831542] [2024-02-05 10:37:30,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:37:30,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-05 10:37:30,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:37:30,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-05 10:37:30,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-05 10:37:30,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 129 [2024-02-05 10:37:30,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 87 transitions, 326 flow. Second operand has 6 states, 6 states have (on average 61.666666666666664) internal successors, (370), 6 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:30,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:37:30,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 129 [2024-02-05 10:37:30,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:37:32,797 INFO L124 PetriNetUnfolderBase]: 23888/39918 cut-off events. [2024-02-05 10:37:32,797 INFO L125 PetriNetUnfolderBase]: For 35169/36831 co-relation queries the response was YES. [2024-02-05 10:37:33,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96274 conditions, 39918 events. 23888/39918 cut-off events. For 35169/36831 co-relation queries the response was YES. Maximal size of possible extension queue 1926. Compared 350617 event pairs, 1627 based on Foata normal form. 656/39770 useless extension candidates. Maximal degree in co-relation 96246. Up to 15390 conditions per place. [2024-02-05 10:37:33,186 INFO L140 encePairwiseOnDemand]: 120/129 looper letters, 164 selfloop transitions, 22 changer transitions 0/216 dead transitions. [2024-02-05 10:37:33,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 216 transitions, 1240 flow [2024-02-05 10:37:33,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:37:33,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:37:33,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 469 transitions. [2024-02-05 10:37:33,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6059431524547804 [2024-02-05 10:37:33,188 INFO L175 Difference]: Start difference. First operand has 86 places, 87 transitions, 326 flow. Second operand 6 states and 469 transitions. [2024-02-05 10:37:33,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 216 transitions, 1240 flow [2024-02-05 10:37:33,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 216 transitions, 1240 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-05 10:37:33,314 INFO L231 Difference]: Finished difference. Result has 95 places, 104 transitions, 475 flow [2024-02-05 10:37:33,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=475, PETRI_PLACES=95, PETRI_TRANSITIONS=104} [2024-02-05 10:37:33,315 INFO L281 CegarLoopForPetriNet]: 129 programPoint places, -34 predicate places. [2024-02-05 10:37:33,315 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 104 transitions, 475 flow [2024-02-05 10:37:33,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 61.666666666666664) internal successors, (370), 6 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:33,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:37:33,316 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:37:33,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-05 10:37:33,316 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 103 more)] === [2024-02-05 10:37:33,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:37:33,316 INFO L85 PathProgramCache]: Analyzing trace with hash 375441557, now seen corresponding path program 3 times [2024-02-05 10:37:33,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:37:33,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854820601] [2024-02-05 10:37:33,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:37:33,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:37:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:37:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:37:33,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:37:33,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854820601] [2024-02-05 10:37:33,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854820601] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:37:33,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:37:33,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:37:33,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918950607] [2024-02-05 10:37:33,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:37:33,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-05 10:37:33,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:37:33,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-05 10:37:33,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-05 10:37:33,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 129 [2024-02-05 10:37:33,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 104 transitions, 475 flow. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:37:33,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:37:33,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 129 [2024-02-05 10:37:33,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand