./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/spaghetti.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/spaghetti.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3d25acf6 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/spaghetti.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/spaghetti.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-3d25acf-m [2024-01-30 14:25:52,943 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:25:53,014 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:25:53,030 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:25:53,031 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:25:53,069 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:25:53,070 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:25:53,070 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:25:53,070 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:25:53,075 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:25:53,076 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:25:53,076 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:25:53,077 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:25:53,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:25:53,078 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:25:53,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:25:53,079 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:25:53,079 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:25:53,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:25:53,079 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:25:53,080 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:25:53,080 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:25:53,080 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:25:53,080 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:25:53,081 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:25:53,081 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:25:53,081 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:25:53,081 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:25:53,082 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:25:53,082 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:25:53,083 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:25:53,083 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:25:53,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:25:53,083 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:25:53,084 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:25:53,084 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:25:53,084 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:25:53,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:25:53,084 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:25:53,084 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:25:53,085 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:25:53,085 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:25:53,085 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:25:53,085 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:25:53,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:25:53,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:25:53,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:25:53,324 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:25:53,324 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:25:53,325 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/spaghetti.wvr.c [2024-01-30 14:25:54,363 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:25:54,521 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:25:54,521 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/spaghetti.wvr.c [2024-01-30 14:25:54,527 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fed2bf96b/6583e2f766474e828ff4753053c758a6/FLAGbf4f1dfc8 [2024-01-30 14:25:54,537 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fed2bf96b/6583e2f766474e828ff4753053c758a6 [2024-01-30 14:25:54,541 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:25:54,541 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:25:54,542 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/spaghetti.wvr.yml/witness.yml [2024-01-30 14:25:54,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:25:54,646 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:25:54,647 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:25:54,647 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:25:54,652 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:25:54,653 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:25:54" (1/2) ... [2024-01-30 14:25:54,654 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26537a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:25:54, skipping insertion in model container [2024-01-30 14:25:54,654 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:25:54" (1/2) ... [2024-01-30 14:25:54,656 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@163763a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:25:54, skipping insertion in model container [2024-01-30 14:25:54,656 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:25:54" (2/2) ... [2024-01-30 14:25:54,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26537a9e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:54, skipping insertion in model container [2024-01-30 14:25:54,657 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:25:54" (2/2) ... [2024-01-30 14:25:54,657 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:25:54,686 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:25:54,687 INFO L98 nessWitnessExtractor]: Location invariant before [L105-L105] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,687 INFO L98 nessWitnessExtractor]: Location invariant before [L65-L65] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,688 INFO L98 nessWitnessExtractor]: Location invariant before [L81-L81] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,688 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,688 INFO L98 nessWitnessExtractor]: Location invariant before [L53-L53] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,689 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,689 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,689 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L19] val == (_Bool)0 || val == (_Bool)1 [2024-01-30 14:25:54,689 INFO L98 nessWitnessExtractor]: Location invariant before [L47-L47] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,689 INFO L98 nessWitnessExtractor]: Location invariant before [L44-L44] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,689 INFO L98 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,689 INFO L98 nessWitnessExtractor]: Location invariant before [L82-L82] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,690 INFO L98 nessWitnessExtractor]: Location invariant before [L63-L63] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,690 INFO L98 nessWitnessExtractor]: Location invariant before [L55-L55] (x_0 == 0U) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:54,690 INFO L98 nessWitnessExtractor]: Location invariant before [L54-L54] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,690 INFO L98 nessWitnessExtractor]: Location invariant before [L70-L70] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,690 INFO L98 nessWitnessExtractor]: Location invariant before [L97-L97] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,690 INFO L98 nessWitnessExtractor]: Location invariant before [L73-L73] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,691 INFO L98 nessWitnessExtractor]: Location invariant before [L85-L85] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,691 INFO L98 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,691 INFO L98 nessWitnessExtractor]: Loop invariant at [L96-L103] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,691 INFO L98 nessWitnessExtractor]: Location invariant before [L115-L115] x_1 == 0U [2024-01-30 14:25:54,691 INFO L98 nessWitnessExtractor]: Loop invariant at [L77-L87] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,692 INFO L98 nessWitnessExtractor]: Location invariant before [L57-L57] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,692 INFO L98 nessWitnessExtractor]: Loop invariant at [L61-L68] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,692 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,692 INFO L98 nessWitnessExtractor]: Location invariant before [L100-L100] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,692 INFO L98 nessWitnessExtractor]: Location invariant before [L86-L86] (x_1 % 2U == 0U) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:54,692 INFO L98 nessWitnessExtractor]: Location invariant before [L83-L83] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,692 INFO L98 nessWitnessExtractor]: Location invariant before [L51-L51] (x_0 % 2U == 0U) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:54,693 INFO L98 nessWitnessExtractor]: Location invariant before [L46-L46] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,693 INFO L98 nessWitnessExtractor]: Location invariant before [L80-L80] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,693 INFO L98 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,693 INFO L98 nessWitnessExtractor]: Location invariant before [L71-L71] (x_0 == 0U) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:54,693 INFO L98 nessWitnessExtractor]: Location invariant before [L88-L88] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,693 INFO L98 nessWitnessExtractor]: Location invariant before [L114-L114] (x_0 == 0U) && (x_1 == 0U) [2024-01-30 14:25:54,693 INFO L98 nessWitnessExtractor]: Location invariant before [L106-L106] (x_1 == 0U) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:54,694 INFO L98 nessWitnessExtractor]: Location invariant before [L67-L67] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,694 INFO L98 nessWitnessExtractor]: Location invariant before [L69-L69] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,694 INFO L98 nessWitnessExtractor]: Location invariant before [L102-L102] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,694 INFO L98 nessWitnessExtractor]: Location invariant before [L108-L108] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,694 INFO L98 nessWitnessExtractor]: Location invariant before [L64-L64] (x_0 % 2U == 0U) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:54,694 INFO L98 nessWitnessExtractor]: Location invariant before [L49-L49] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,695 INFO L98 nessWitnessExtractor]: Location invariant before [L84-L84] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,695 INFO L98 nessWitnessExtractor]: Location invariant before [L78-L78] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,695 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,695 INFO L98 nessWitnessExtractor]: Location invariant before [L99-L99] (x_1 % 2U == 0U) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:54,695 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] (x_1 == 0U) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:54,695 INFO L98 nessWitnessExtractor]: Location invariant before [L98-L98] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,696 INFO L98 nessWitnessExtractor]: Location invariant before [L79-L79] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,696 INFO L98 nessWitnessExtractor]: Location invariant before [L104-L104] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,696 INFO L98 nessWitnessExtractor]: Loop invariant at [L42-L52] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,696 INFO L98 nessWitnessExtractor]: Location invariant before [L101-L101] (unsigned long )_argptr == 0UL [2024-01-30 14:25:54,713 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:25:54,830 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/spaghetti.wvr.c[3273,3286] [2024-01-30 14:25:54,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:25:54,840 INFO L202 MainTranslator]: Completed pre-run [2024-01-30 14:25:54,848 WARN L424 MainDispatcher]: Unable to annotate __assert_fail(const char *__assertion, const char *__file, unsigned int __line, const char *__function) with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-30 14:25:54,894 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/spaghetti.wvr.c[3273,3286] [2024-01-30 14:25:54,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:25:54,907 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:25:54,907 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:54 WrapperNode [2024-01-30 14:25:54,907 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:25:54,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:25:54,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:25:54,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:25:54,915 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 30.01 02:25:54" (1/1) ... [2024-01-30 14:25:54,931 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 30.01 02:25:54" (1/1) ... [2024-01-30 14:25:54,954 INFO L138 Inliner]: procedures = 23, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2024-01-30 14:25:54,954 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:25:54,955 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:25:54,955 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:25:54,955 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:25:54,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:54" (1/1) ... [2024-01-30 14:25:54,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:54" (1/1) ... [2024-01-30 14:25:54,976 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:54" (1/1) ... [2024-01-30 14:25:55,000 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]. [2024-01-30 14:25:55,002 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:54" (1/1) ... [2024-01-30 14:25:55,002 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:54" (1/1) ... [2024-01-30 14:25:55,014 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:54" (1/1) ... [2024-01-30 14:25:55,021 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:54" (1/1) ... [2024-01-30 14:25:55,024 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:54" (1/1) ... [2024-01-30 14:25:55,028 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:54" (1/1) ... [2024-01-30 14:25:55,030 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:25:55,033 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:25:55,033 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:25:55,034 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:25:55,034 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:54" (1/1) ... [2024-01-30 14:25:55,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:25:55,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:25:55,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-30 14:25:55,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-30 14:25:55,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:25:55,096 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-30 14:25:55,096 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-30 14:25:55,096 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-30 14:25:55,096 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-30 14:25:55,096 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-30 14:25:55,096 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-30 14:25:55,097 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-30 14:25:55,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-30 14:25:55,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:25:55,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:25:55,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:25:55,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-30 14:25:55,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-30 14:25:55,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:25:55,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:25:55,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:25:55,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:25:55,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-30 14:25:55,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-30 14:25:55,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-30 14:25:55,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-30 14:25:55,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:25:55,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:25:55,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:25:55,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:25:55,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:25:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-30 14:25:55,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-30 14:25:55,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:25:55,103 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-30 14:25:55,215 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:25:55,216 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:25:55,551 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:25:55,551 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:25:55,696 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:25:55,696 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-30 14:25:55,697 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:25:55 BoogieIcfgContainer [2024-01-30 14:25:55,697 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:25:55,698 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:25:55,698 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:25:55,713 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:25:55,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:25:54" (1/4) ... [2024-01-30 14:25:55,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c30eb9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:25:55, skipping insertion in model container [2024-01-30 14:25:55,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:25:54" (2/4) ... [2024-01-30 14:25:55,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c30eb9a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:25:55, skipping insertion in model container [2024-01-30 14:25:55,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:54" (3/4) ... [2024-01-30 14:25:55,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c30eb9a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:25:55, skipping insertion in model container [2024-01-30 14:25:55,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:25:55" (4/4) ... [2024-01-30 14:25:55,715 INFO L112 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.c [2024-01-30 14:25:55,726 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:25:55,727 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2024-01-30 14:25:55,727 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:25:55,795 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-30 14:25:55,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 141 transitions, 310 flow [2024-01-30 14:25:55,890 INFO L124 PetriNetUnfolderBase]: 8/137 cut-off events. [2024-01-30 14:25:55,890 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-30 14:25:55,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 137 events. 8/137 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 613 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2024-01-30 14:25:55,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 141 transitions, 310 flow [2024-01-30 14:25:55,902 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 136 transitions, 296 flow [2024-01-30 14:25:55,914 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:25:55,920 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;@34257a7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:25:55,921 INFO L358 AbstractCegarLoop]: Starting to check reachability of 115 error locations. [2024-01-30 14:25:55,922 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:25:55,922 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:25:55,922 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:25:55,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:25:55,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:25:55,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err11ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 112 more)] === [2024-01-30 14:25:55,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:25:55,928 INFO L85 PathProgramCache]: Analyzing trace with hash 16930, now seen corresponding path program 1 times [2024-01-30 14:25:55,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:25:55,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906165795] [2024-01-30 14:25:55,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:25:55,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:25:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:25:56,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:25:56,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:25:56,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906165795] [2024-01-30 14:25:56,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906165795] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:25:56,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:25:56,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:25:56,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714202533] [2024-01-30 14:25:56,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:25:56,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:25:56,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:25:56,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:25:56,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:25:56,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 141 [2024-01-30 14:25:56,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 136 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:25:56,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:25:56,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 141 [2024-01-30 14:25:56,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:06,018 INFO L124 PetriNetUnfolderBase]: 106745/155956 cut-off events. [2024-01-30 14:26:06,019 INFO L125 PetriNetUnfolderBase]: For 2322/2322 co-relation queries the response was YES. [2024-01-30 14:26:06,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300594 conditions, 155956 events. 106745/155956 cut-off events. For 2322/2322 co-relation queries the response was YES. Maximal size of possible extension queue 9191. Compared 1426947 event pairs, 105545 based on Foata normal form. 10221/99260 useless extension candidates. Maximal degree in co-relation 279972. Up to 140155 conditions per place. [2024-01-30 14:26:07,323 INFO L140 encePairwiseOnDemand]: 120/141 looper letters, 58 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2024-01-30 14:26:07,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 117 transitions, 378 flow [2024-01-30 14:26:07,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:26:07,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:26:07,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2024-01-30 14:26:07,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6193853427895981 [2024-01-30 14:26:07,334 INFO L175 Difference]: Start difference. First operand has 141 places, 136 transitions, 296 flow. Second operand 3 states and 262 transitions. [2024-01-30 14:26:07,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 117 transitions, 378 flow [2024-01-30 14:26:08,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 117 transitions, 362 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-30 14:26:08,019 INFO L231 Difference]: Finished difference. Result has 120 places, 117 transitions, 246 flow [2024-01-30 14:26:08,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=120, PETRI_TRANSITIONS=117} [2024-01-30 14:26:08,023 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -21 predicate places. [2024-01-30 14:26:08,023 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 117 transitions, 246 flow [2024-01-30 14:26:08,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:08,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:08,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-30 14:26:08,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:26:08,024 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err11ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 112 more)] === [2024-01-30 14:26:08,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:08,025 INFO L85 PathProgramCache]: Analyzing trace with hash 525382, now seen corresponding path program 1 times [2024-01-30 14:26:08,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:08,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575356509] [2024-01-30 14:26:08,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:08,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:08,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:08,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575356509] [2024-01-30 14:26:08,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575356509] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:08,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:08,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:26:08,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705295853] [2024-01-30 14:26:08,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:08,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:26:08,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:08,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:26:08,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:26:08,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 141 [2024-01-30 14:26:08,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 117 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:08,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:08,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 141 [2024-01-30 14:26:08,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:17,004 INFO L124 PetriNetUnfolderBase]: 120256/179563 cut-off events. [2024-01-30 14:26:17,004 INFO L125 PetriNetUnfolderBase]: For 540/540 co-relation queries the response was YES. [2024-01-30 14:26:17,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339621 conditions, 179563 events. 120256/179563 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 9955. Compared 1698478 event pairs, 82159 based on Foata normal form. 0/105585 useless extension candidates. Maximal degree in co-relation 339612. Up to 113379 conditions per place. [2024-01-30 14:26:18,450 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 99 selfloop transitions, 6 changer transitions 0/162 dead transitions. [2024-01-30 14:26:18,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 162 transitions, 549 flow [2024-01-30 14:26:18,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:26:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:26:18,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2024-01-30 14:26:18,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6903073286052009 [2024-01-30 14:26:18,455 INFO L175 Difference]: Start difference. First operand has 120 places, 117 transitions, 246 flow. Second operand 3 states and 292 transitions. [2024-01-30 14:26:18,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 162 transitions, 549 flow [2024-01-30 14:26:18,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 162 transitions, 545 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:26:18,460 INFO L231 Difference]: Finished difference. Result has 121 places, 120 transitions, 280 flow [2024-01-30 14:26:18,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=280, PETRI_PLACES=121, PETRI_TRANSITIONS=120} [2024-01-30 14:26:18,462 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -20 predicate places. [2024-01-30 14:26:18,462 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 120 transitions, 280 flow [2024-01-30 14:26:18,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:18,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:18,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-30 14:26:18,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:26:18,465 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err11ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 112 more)] === [2024-01-30 14:26:18,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:18,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1527483873, now seen corresponding path program 1 times [2024-01-30 14:26:18,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:18,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439526723] [2024-01-30 14:26:18,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:18,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:18,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:18,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:18,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439526723] [2024-01-30 14:26:18,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439526723] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:18,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:18,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:26:18,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455687182] [2024-01-30 14:26:18,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:18,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:26:18,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:18,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:26:18,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:26:18,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 141 [2024-01-30 14:26:18,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 120 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:18,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:18,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 141 [2024-01-30 14:26:18,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:26,428 INFO L124 PetriNetUnfolderBase]: 104428/161606 cut-off events. [2024-01-30 14:26:26,428 INFO L125 PetriNetUnfolderBase]: For 20491/20491 co-relation queries the response was YES. [2024-01-30 14:26:26,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312630 conditions, 161606 events. 104428/161606 cut-off events. For 20491/20491 co-relation queries the response was YES. Maximal size of possible extension queue 7851. Compared 1532248 event pairs, 72829 based on Foata normal form. 18132/133033 useless extension candidates. Maximal degree in co-relation 187853. Up to 125046 conditions per place. [2024-01-30 14:26:27,433 INFO L140 encePairwiseOnDemand]: 128/141 looper letters, 98 selfloop transitions, 2 changer transitions 0/149 dead transitions. [2024-01-30 14:26:27,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 149 transitions, 565 flow [2024-01-30 14:26:27,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:26:27,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:26:27,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 323 transitions. [2024-01-30 14:26:27,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5726950354609929 [2024-01-30 14:26:27,440 INFO L175 Difference]: Start difference. First operand has 121 places, 120 transitions, 280 flow. Second operand 4 states and 323 transitions. [2024-01-30 14:26:27,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 149 transitions, 565 flow [2024-01-30 14:26:27,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 149 transitions, 545 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:26:27,959 INFO L231 Difference]: Finished difference. Result has 111 places, 109 transitions, 250 flow [2024-01-30 14:26:27,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=111, PETRI_TRANSITIONS=109} [2024-01-30 14:26:27,960 INFO L281 CegarLoopForPetriNet]: 141 programPoint places, -30 predicate places. [2024-01-30 14:26:27,960 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 109 transitions, 250 flow [2024-01-30 14:26:27,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:27,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:27,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:26:27,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:26:27,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err11ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 112 more)] === [2024-01-30 14:26:27,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:27,961 INFO L85 PathProgramCache]: Analyzing trace with hash 965278382, now seen corresponding path program 1 times [2024-01-30 14:26:27,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:27,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098597633] [2024-01-30 14:26:27,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:27,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:28,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:28,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:28,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098597633] [2024-01-30 14:26:28,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098597633] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:28,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:28,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:26:28,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049579375] [2024-01-30 14:26:28,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:28,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:26:28,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:28,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:26:28,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:26:28,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 141 [2024-01-30 14:26:28,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 109 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:26:28,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:28,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 141 [2024-01-30 14:26:28,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand