./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-mult-4.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/popl20-mult-4.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/popl20-mult-4.wvr.c ./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/popl20-mult-4.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 10:35:48,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-05 10:35:48,433 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-05 10:35:48,438 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-05 10:35:48,439 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-05 10:35:48,459 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-05 10:35:48,459 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-05 10:35:48,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-05 10:35:48,463 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-05 10:35:48,467 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-05 10:35:48,467 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-05 10:35:48,468 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-05 10:35:48,468 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-05 10:35:48,470 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-05 10:35:48,470 INFO L153 SettingsManager]: * Use SBE=true [2024-02-05 10:35:48,470 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-05 10:35:48,470 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-05 10:35:48,471 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-05 10:35:48,471 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-05 10:35:48,471 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-05 10:35:48,472 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-05 10:35:48,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-05 10:35:48,473 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-05 10:35:48,473 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-05 10:35:48,473 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-05 10:35:48,474 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-05 10:35:48,474 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-05 10:35:48,474 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-05 10:35:48,475 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-05 10:35:48,475 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-05 10:35:48,476 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-05 10:35:48,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-05 10:35:48,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:35:48,477 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-05 10:35:48,477 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-05 10:35:48,477 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-05 10:35:48,477 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-05 10:35:48,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-05 10:35:48,478 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-05 10:35:48,478 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-05 10:35:48,478 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-05 10:35:48,478 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-05 10:35:48,479 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-05 10:35:48,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-05 10:35:48,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-05 10:35:48,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-05 10:35:48,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-05 10:35:48,786 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-05 10:35:48,786 INFO L274 PluginConnector]: CDTParser initialized [2024-02-05 10:35:48,787 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c [2024-02-05 10:35:49,948 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-05 10:35:50,150 INFO L384 CDTParser]: Found 1 translation units. [2024-02-05 10:35:50,151 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c [2024-02-05 10:35:50,162 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af151be31/7038bd68b67e437a844d203b6e710bd8/FLAG49f3ed71f [2024-02-05 10:35:50,181 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af151be31/7038bd68b67e437a844d203b6e710bd8 [2024-02-05 10:35:50,183 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-05 10:35:50,184 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-05 10:35:50,187 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/popl20-mult-4.wvr.yml/witness.yml [2024-02-05 10:35:50,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-05 10:35:50,301 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-05 10:35:50,302 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-05 10:35:50,302 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-05 10:35:50,306 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-05 10:35:50,307 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:35:50" (1/2) ... [2024-02-05 10:35:50,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@392bff59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:35:50, skipping insertion in model container [2024-02-05 10:35:50,309 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:35:50" (1/2) ... [2024-02-05 10:35:50,310 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@263181c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:35:50, skipping insertion in model container [2024-02-05 10:35:50,310 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:35:50" (2/2) ... [2024-02-05 10:35:50,311 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@392bff59 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:35:50, skipping insertion in model container [2024-02-05 10:35:50,311 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:35:50" (2/2) ... [2024-02-05 10:35:50,312 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-05 10:35:50,350 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-05 10:35:50,351 INFO L101 nessWitnessExtractor]: Location invariant before [L64-L64] ((unsigned long )_argptr == 0UL) && (((((((((((((12U <= i && i <= 4294967294U) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) [2024-02-05 10:35:50,352 INFO L101 nessWitnessExtractor]: Location invariant before [L73-L73] ((unsigned long )_argptr == 0UL) && ((((((((((i == 8U || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) || (10U <= i && i <= 4294967294U)) || i == 9U) [2024-02-05 10:35:50,352 INFO L101 nessWitnessExtractor]: Loop invariant at [L72-L72] ((unsigned long )_argptr == 0UL) && ((((((((((i == 9U || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) || 10U <= i) [2024-02-05 10:35:50,352 INFO L101 nessWitnessExtractor]: Loop invariant at [L41-L41] ((unsigned long )_argptr == 0UL) && ((((((((((((12U <= i || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) [2024-02-05 10:35:50,352 INFO L101 nessWitnessExtractor]: Location invariant before [L88-L88] counter == 0U [2024-02-05 10:35:50,352 INFO L101 nessWitnessExtractor]: Loop invariant at [L62-L62] ((unsigned long )_argptr == 0UL) && ((((((((((((12U <= i || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) [2024-02-05 10:35:50,353 INFO L101 nessWitnessExtractor]: Location invariant before [L91-L91] counter == 0U [2024-02-05 10:35:50,353 INFO L101 nessWitnessExtractor]: Location invariant before [L79-L79] (unsigned long )_argptr == 0UL [2024-02-05 10:35:50,353 INFO L101 nessWitnessExtractor]: Location invariant before [L86-L86] ((((((0LL - (long long )c) + (long long )counter >= 0LL) && ((long long )c + (long long )counter >= 0LL)) && ((0LL - (long long )c) - (long long )counter >= 0LL)) && ((long long )c - (long long )counter >= 0LL)) && (counter == 0U)) && (c == 0U) [2024-02-05 10:35:50,353 INFO L101 nessWitnessExtractor]: Location invariant before [L65-L65] ((unsigned long )_argptr == 0UL) && (((((((((((((12U <= i && i <= 4294967294U) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) [2024-02-05 10:35:50,353 INFO L101 nessWitnessExtractor]: Location invariant before [L58-L58] (unsigned long )_argptr == 0UL [2024-02-05 10:35:50,353 INFO L101 nessWitnessExtractor]: Location invariant before [L55-L55] ((unsigned long )_argptr == 0UL) && ((((((((((i == 9U || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) || (10U <= i && i <= 4294967294U)) [2024-02-05 10:35:50,354 INFO L101 nessWitnessExtractor]: Location invariant before [L54-L54] ((unsigned long )_argptr == 0UL) && ((((((((((i == 9U || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) || (10U <= i && i <= 4294967294U)) [2024-02-05 10:35:50,354 INFO L101 nessWitnessExtractor]: Location invariant before [L68-L68] (unsigned long )_argptr == 0UL [2024-02-05 10:35:50,354 INFO L101 nessWitnessExtractor]: Loop invariant at [L51-L51] ((unsigned long )_argptr == 0UL) && ((((((((((i == 9U || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) || 10U <= i) [2024-02-05 10:35:50,354 INFO L101 nessWitnessExtractor]: Location invariant before [L76-L76] ((unsigned long )_argptr == 0UL) && ((((((((((i == 8U || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) || (10U <= i && i <= 4294967294U)) || i == 9U) [2024-02-05 10:35:50,354 INFO L101 nessWitnessExtractor]: Location invariant before [L75-L75] ((unsigned long )_argptr == 0UL) && ((((((((((i == 8U || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) || (10U <= i && i <= 4294967294U)) || i == 9U) [2024-02-05 10:35:50,354 INFO L101 nessWitnessExtractor]: Location invariant before [L44-L44] ((unsigned long )_argptr == 0UL) && (((((((((((((12U <= i && i <= 4294967294U) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) [2024-02-05 10:35:50,355 INFO L101 nessWitnessExtractor]: Location invariant before [L63-L63] ((unsigned long )_argptr == 0UL) && (((((((((((((12U <= i && i <= 4294967294U) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) [2024-02-05 10:35:50,355 INFO L101 nessWitnessExtractor]: Location invariant before [L53-L53] ((unsigned long )_argptr == 0UL) && ((((((((((i == 9U || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) || (10U <= i && i <= 4294967294U)) [2024-02-05 10:35:50,355 INFO L101 nessWitnessExtractor]: Location invariant before [L85-L85] (((((((0LL - (long long )c) + (long long )counter >= 0LL) && ((long long )c + (long long )counter >= 0LL)) && ((0LL - (long long )c) - (long long )counter >= 0LL)) && ((long long )c - (long long )counter >= 0LL)) && (N == 0U)) && (counter == 0U)) && (c == 0U) [2024-02-05 10:35:50,356 INFO L101 nessWitnessExtractor]: Location invariant before [L42-L42] ((unsigned long )_argptr == 0UL) && (((((((((((((12U <= i && i <= 4294967294U) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) [2024-02-05 10:35:50,356 INFO L101 nessWitnessExtractor]: Location invariant before [L52-L52] ((unsigned long )_argptr == 0UL) && ((((((((((i == 9U || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) || (10U <= i && i <= 4294967294U)) [2024-02-05 10:35:50,356 INFO L101 nessWitnessExtractor]: Location invariant before [L43-L43] ((unsigned long )_argptr == 0UL) && (((((((((((((12U <= i && i <= 4294967294U) || i == 11U) || i == 10U) || i == 9U) || i == 8U) || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) [2024-02-05 10:35:50,356 INFO L101 nessWitnessExtractor]: Location invariant before [L47-L47] (unsigned long )_argptr == 0UL [2024-02-05 10:35:50,356 INFO L101 nessWitnessExtractor]: Location invariant before [L74-L74] ((unsigned long )_argptr == 0UL) && ((((((((((i == 8U || i == 7U) || i == 6U) || i == 5U) || i == 4U) || i == 3U) || i == 2U) || i == 1U) || (0U == i && i == 0U)) || (10U <= i && i <= 4294967294U)) || i == 9U) [2024-02-05 10:35:50,377 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-02-05 10:35:50,575 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/popl20-mult-4.wvr.c[2664,2677] [2024-02-05 10:35:50,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:35:50,598 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local 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 [2024-02-05 10:35:50,744 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/popl20-mult-4.wvr.c[2664,2677] [2024-02-05 10:35:50,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:35:50,760 INFO L208 MainTranslator]: Completed translation [2024-02-05 10:35:50,761 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:35:50 WrapperNode [2024-02-05 10:35:50,761 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-05 10:35:50,763 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-05 10:35:50,763 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-05 10:35:50,764 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-05 10:35:50,771 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 10:35:50" (1/1) ... [2024-02-05 10:35:50,793 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 10:35:50" (1/1) ... [2024-02-05 10:35:50,824 INFO L138 Inliner]: procedures = 23, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 138 [2024-02-05 10:35:50,824 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-05 10:35:50,825 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-05 10:35:50,825 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-05 10:35:50,826 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-05 10:35:50,836 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 10:35:50" (1/1) ... [2024-02-05 10:35:50,837 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 10:35:50" (1/1) ... [2024-02-05 10:35:50,840 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 10:35:50" (1/1) ... [2024-02-05 10:35:50,869 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 10:35:50,874 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 10:35:50" (1/1) ... [2024-02-05 10:35:50,874 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 10:35:50" (1/1) ... [2024-02-05 10:35:50,884 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 10:35:50" (1/1) ... [2024-02-05 10:35:50,888 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 10:35:50" (1/1) ... [2024-02-05 10:35:50,891 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 10:35:50" (1/1) ... [2024-02-05 10:35:50,892 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 10:35:50" (1/1) ... [2024-02-05 10:35:50,897 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-05 10:35:50,898 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-05 10:35:50,898 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-05 10:35:50,898 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-05 10:35:50,899 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 10:35:50" (1/1) ... [2024-02-05 10:35:50,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:35:50,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-05 10:35:50,942 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 10:35:50,949 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 10:35:50,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-05 10:35:50,983 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-05 10:35:50,983 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-05 10:35:50,983 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-05 10:35:50,984 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-05 10:35:50,984 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-05 10:35:50,984 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-05 10:35:50,984 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-05 10:35:50,984 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-05 10:35:50,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-05 10:35:50,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-05 10:35:50,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-05 10:35:50,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-05 10:35:50,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-05 10:35:50,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-05 10:35:50,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-05 10:35:50,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-05 10:35:50,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-05 10:35:50,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-05 10:35:50,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-05 10:35:50,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-05 10:35:50,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-05 10:35:50,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-05 10:35:50,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-05 10:35:50,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-05 10:35:50,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-05 10:35:50,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-05 10:35:50,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-05 10:35:50,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-05 10:35:50,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-05 10:35:50,990 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 10:35:51,124 INFO L244 CfgBuilder]: Building ICFG [2024-02-05 10:35:51,125 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-05 10:35:51,692 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-05 10:35:51,692 INFO L293 CfgBuilder]: Performing block encoding [2024-02-05 10:35:51,921 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-05 10:35:51,921 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-02-05 10:35:51,923 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:35:51 BoogieIcfgContainer [2024-02-05 10:35:51,923 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-05 10:35:51,929 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-05 10:35:51,929 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-05 10:35:51,933 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-05 10:35:51,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:35:50" (1/4) ... [2024-02-05 10:35:51,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5efa3221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:35:51, skipping insertion in model container [2024-02-05 10:35:51,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:35:50" (2/4) ... [2024-02-05 10:35:51,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5efa3221 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:35:51, skipping insertion in model container [2024-02-05 10:35:51,935 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 10:35:50" (3/4) ... [2024-02-05 10:35:51,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5efa3221 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:35:51, skipping insertion in model container [2024-02-05 10:35:51,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:35:51" (4/4) ... [2024-02-05 10:35:51,937 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2024-02-05 10:35:51,956 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-05 10:35:51,957 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2024-02-05 10:35:51,957 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-05 10:35:52,077 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-05 10:35:52,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 85 transitions, 198 flow [2024-02-05 10:35:52,167 INFO L124 PetriNetUnfolderBase]: 4/81 cut-off events. [2024-02-05 10:35:52,168 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-05 10:35:52,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 81 events. 4/81 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 241 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-02-05 10:35:52,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 85 transitions, 198 flow [2024-02-05 10:35:52,177 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 80 transitions, 184 flow [2024-02-05 10:35:52,193 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-05 10:35:52,201 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;@5eb81b9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-05 10:35:52,201 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2024-02-05 10:35:52,205 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-05 10:35:52,206 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-05 10:35:52,206 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:35:52,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:35:52,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-05 10:35:52,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-05 10:35:52,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:35:52,213 INFO L85 PathProgramCache]: Analyzing trace with hash 15080, now seen corresponding path program 1 times [2024-02-05 10:35:52,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:35:52,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103033431] [2024-02-05 10:35:52,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:35:52,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:35:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:35:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:35:52,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:35:52,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103033431] [2024-02-05 10:35:52,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103033431] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:35:52,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:35:52,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:35:52,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812426318] [2024-02-05 10:35:52,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:35:52,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:35:52,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:35:52,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:35:52,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:35:52,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 85 [2024-02-05 10:35:52,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:35:52,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:35:52,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 85 [2024-02-05 10:35:52,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:35:56,248 INFO L124 PetriNetUnfolderBase]: 21344/30741 cut-off events. [2024-02-05 10:35:56,249 INFO L125 PetriNetUnfolderBase]: For 1283/1283 co-relation queries the response was YES. [2024-02-05 10:35:56,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59699 conditions, 30741 events. 21344/30741 cut-off events. For 1283/1283 co-relation queries the response was YES. Maximal size of possible extension queue 1611. Compared 210059 event pairs, 17952 based on Foata normal form. 0/22723 useless extension candidates. Maximal degree in co-relation 53136. Up to 27752 conditions per place. [2024-02-05 10:35:56,660 INFO L140 encePairwiseOnDemand]: 76/85 looper letters, 50 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2024-02-05 10:35:56,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 73 transitions, 274 flow [2024-02-05 10:35:56,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:35:56,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:35:56,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-02-05 10:35:56,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254901960784314 [2024-02-05 10:35:56,675 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 184 flow. Second operand 3 states and 134 transitions. [2024-02-05 10:35:56,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 73 transitions, 274 flow [2024-02-05 10:35:56,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 73 transitions, 258 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-05 10:35:56,699 INFO L231 Difference]: Finished difference. Result has 76 places, 73 transitions, 158 flow [2024-02-05 10:35:56,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=76, PETRI_TRANSITIONS=73} [2024-02-05 10:35:56,705 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -13 predicate places. [2024-02-05 10:35:56,705 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 73 transitions, 158 flow [2024-02-05 10:35:56,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:35:56,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:35:56,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-05 10:35:56,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-05 10:35:56,707 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-05 10:35:56,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:35:56,708 INFO L85 PathProgramCache]: Analyzing trace with hash 467911, now seen corresponding path program 1 times [2024-02-05 10:35:56,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:35:56,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591293916] [2024-02-05 10:35:56,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:35:56,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:35:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:35:56,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:35:56,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:35:56,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591293916] [2024-02-05 10:35:56,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591293916] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:35:56,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:35:56,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-05 10:35:56,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904867019] [2024-02-05 10:35:56,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:35:56,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:35:56,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:35:56,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:35:56,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:35:56,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 85 [2024-02-05 10:35:56,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:35:56,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:35:56,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 85 [2024-02-05 10:35:56,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:35:58,374 INFO L124 PetriNetUnfolderBase]: 11977/17054 cut-off events. [2024-02-05 10:35:58,374 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2024-02-05 10:35:58,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32928 conditions, 17054 events. 11977/17054 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 113828 event pairs, 9765 based on Foata normal form. 0/14151 useless extension candidates. Maximal degree in co-relation 32919. Up to 15609 conditions per place. [2024-02-05 10:35:58,680 INFO L140 encePairwiseOnDemand]: 82/85 looper letters, 45 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2024-02-05 10:35:58,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 72 transitions, 250 flow [2024-02-05 10:35:58,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:35:58,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:35:58,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2024-02-05 10:35:58,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5411764705882353 [2024-02-05 10:35:58,684 INFO L175 Difference]: Start difference. First operand has 76 places, 73 transitions, 158 flow. Second operand 3 states and 138 transitions. [2024-02-05 10:35:58,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 72 transitions, 250 flow [2024-02-05 10:35:58,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 72 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:35:58,686 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 156 flow [2024-02-05 10:35:58,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2024-02-05 10:35:58,687 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -14 predicate places. [2024-02-05 10:35:58,688 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 156 flow [2024-02-05 10:35:58,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:35:58,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:35:58,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-05 10:35:58,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-05 10:35:58,689 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-05 10:35:58,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:35:58,689 INFO L85 PathProgramCache]: Analyzing trace with hash 14505709, now seen corresponding path program 1 times [2024-02-05 10:35:58,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:35:58,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020672201] [2024-02-05 10:35:58,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:35:58,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:35:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:35:58,730 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 10:35:58,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:35:58,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020672201] [2024-02-05 10:35:58,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020672201] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:35:58,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:35:58,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-05 10:35:58,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409819837] [2024-02-05 10:35:58,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:35:58,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:35:58,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:35:58,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:35:58,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:35:58,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 85 [2024-02-05 10:35:58,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 10:35:58,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:35:58,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 85 [2024-02-05 10:35:58,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:36:00,920 INFO L124 PetriNetUnfolderBase]: 17086/24902 cut-off events. [2024-02-05 10:36:00,924 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2024-02-05 10:36:00,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47798 conditions, 24902 events. 17086/24902 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 1440. Compared 173669 event pairs, 5564 based on Foata normal form. 1/21246 useless extension candidates. Maximal degree in co-relation 47787. Up to 15863 conditions per place. [2024-02-05 10:36:01,114 INFO L140 encePairwiseOnDemand]: 77/85 looper letters, 73 selfloop transitions, 3 changer transitions 1/102 dead transitions. [2024-02-05 10:36:01,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 102 transitions, 377 flow [2024-02-05 10:36:01,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:36:01,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:36:01,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2024-02-05 10:36:01,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2024-02-05 10:36:01,117 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 156 flow. Second operand 3 states and 175 transitions. [2024-02-05 10:36:01,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 102 transitions, 377 flow [2024-02-05 10:36:01,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 102 transitions, 373 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:36:01,120 INFO L231 Difference]: Finished difference. Result has 74 places, 72 transitions, 171 flow [2024-02-05 10:36:01,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=74, PETRI_TRANSITIONS=72} [2024-02-05 10:36:01,121 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -15 predicate places. [2024-02-05 10:36:01,121 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 72 transitions, 171 flow [2024-02-05 10:36:01,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 10:36:01,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:01,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:36:01,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-05 10:36:01,122 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-05 10:36:01,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:01,123 INFO L85 PathProgramCache]: Analyzing trace with hash 338210809, now seen corresponding path program 1 times [2024-02-05 10:36:01,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:01,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918616605] [2024-02-05 10:36:01,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:01,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:01,424 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 10:36:01,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:01,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918616605] [2024-02-05 10:36:01,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918616605] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:01,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:01,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:36:01,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663493023] [2024-02-05 10:36:01,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:01,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:36:01,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:01,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:36:01,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:36:01,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 85 [2024-02-05 10:36:01,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 10:36:01,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:01,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 85 [2024-02-05 10:36:01,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:36:03,705 INFO L124 PetriNetUnfolderBase]: 19461/29277 cut-off events. [2024-02-05 10:36:03,705 INFO L125 PetriNetUnfolderBase]: For 3170/3170 co-relation queries the response was YES. [2024-02-05 10:36:03,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59204 conditions, 29277 events. 19461/29277 cut-off events. For 3170/3170 co-relation queries the response was YES. Maximal size of possible extension queue 1645. Compared 219793 event pairs, 12814 based on Foata normal form. 0/27685 useless extension candidates. Maximal degree in co-relation 17338. Up to 23216 conditions per place. [2024-02-05 10:36:03,908 INFO L140 encePairwiseOnDemand]: 81/85 looper letters, 72 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2024-02-05 10:36:03,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 96 transitions, 379 flow [2024-02-05 10:36:03,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:36:03,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:36:03,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 193 transitions. [2024-02-05 10:36:03,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5676470588235294 [2024-02-05 10:36:03,910 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 171 flow. Second operand 4 states and 193 transitions. [2024-02-05 10:36:03,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 96 transitions, 379 flow [2024-02-05 10:36:03,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 96 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-05 10:36:03,913 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 168 flow [2024-02-05 10:36:03,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-02-05 10:36:03,914 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -15 predicate places. [2024-02-05 10:36:03,914 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 168 flow [2024-02-05 10:36:03,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 10:36:03,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:03,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:36:03,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-05 10:36:03,916 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-05 10:36:03,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:03,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1399177276, now seen corresponding path program 1 times [2024-02-05 10:36:03,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:03,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528148267] [2024-02-05 10:36:03,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:03,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:04,054 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 10:36:04,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:04,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528148267] [2024-02-05 10:36:04,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528148267] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:04,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:04,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:36:04,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235264949] [2024-02-05 10:36:04,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:04,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:36:04,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:04,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:36:04,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:36:04,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 85 [2024-02-05 10:36:04,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 10:36:04,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:04,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 85 [2024-02-05 10:36:04,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:36:06,112 INFO L124 PetriNetUnfolderBase]: 20137/29725 cut-off events. [2024-02-05 10:36:06,113 INFO L125 PetriNetUnfolderBase]: For 3348/3348 co-relation queries the response was YES. [2024-02-05 10:36:06,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59929 conditions, 29725 events. 20137/29725 cut-off events. For 3348/3348 co-relation queries the response was YES. Maximal size of possible extension queue 1620. Compared 223642 event pairs, 1082 based on Foata normal form. 0/28319 useless extension candidates. Maximal degree in co-relation 59908. Up to 23376 conditions per place. [2024-02-05 10:36:06,308 INFO L140 encePairwiseOnDemand]: 81/85 looper letters, 80 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2024-02-05 10:36:06,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 102 transitions, 413 flow [2024-02-05 10:36:06,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:36:06,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:36:06,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-02-05 10:36:06,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5852941176470589 [2024-02-05 10:36:06,310 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 168 flow. Second operand 4 states and 199 transitions. [2024-02-05 10:36:06,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 102 transitions, 413 flow [2024-02-05 10:36:06,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 102 transitions, 410 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:36:06,315 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 165 flow [2024-02-05 10:36:06,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-02-05 10:36:06,316 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -16 predicate places. [2024-02-05 10:36:06,316 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 165 flow [2024-02-05 10:36:06,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 10:36:06,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:06,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:36:06,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-05 10:36:06,318 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-05 10:36:06,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:06,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1396910596, now seen corresponding path program 1 times [2024-02-05 10:36:06,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:06,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226596632] [2024-02-05 10:36:06,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:06,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:06,511 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 10:36:06,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:06,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226596632] [2024-02-05 10:36:06,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226596632] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:06,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:06,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:36:06,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244112009] [2024-02-05 10:36:06,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:06,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:36:06,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:06,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:36:06,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:36:06,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 85 [2024-02-05 10:36:06,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 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 10:36:06,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:06,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 85 [2024-02-05 10:36:06,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:36:08,983 INFO L124 PetriNetUnfolderBase]: 24010/32245 cut-off events. [2024-02-05 10:36:08,983 INFO L125 PetriNetUnfolderBase]: For 2396/2396 co-relation queries the response was YES. [2024-02-05 10:36:09,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68606 conditions, 32245 events. 24010/32245 cut-off events. For 2396/2396 co-relation queries the response was YES. Maximal size of possible extension queue 1736. Compared 205482 event pairs, 3953 based on Foata normal form. 830/31304 useless extension candidates. Maximal degree in co-relation 60831. Up to 13149 conditions per place. [2024-02-05 10:36:09,161 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 99 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2024-02-05 10:36:09,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 120 transitions, 501 flow [2024-02-05 10:36:09,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:36:09,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:36:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-02-05 10:36:09,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6147058823529412 [2024-02-05 10:36:09,163 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 165 flow. Second operand 4 states and 209 transitions. [2024-02-05 10:36:09,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 120 transitions, 501 flow [2024-02-05 10:36:09,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 120 transitions, 494 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:36:09,167 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 181 flow [2024-02-05 10:36:09,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2024-02-05 10:36:09,169 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -15 predicate places. [2024-02-05 10:36:09,169 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 181 flow [2024-02-05 10:36:09,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 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 10:36:09,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:09,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:36:09,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-05 10:36:09,170 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-05 10:36:09,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:09,171 INFO L85 PathProgramCache]: Analyzing trace with hash -286777255, now seen corresponding path program 1 times [2024-02-05 10:36:09,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:09,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347075004] [2024-02-05 10:36:09,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:09,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:09,397 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 10:36:09,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:09,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347075004] [2024-02-05 10:36:09,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347075004] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:09,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:09,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:36:09,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943164206] [2024-02-05 10:36:09,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:09,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:36:09,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:09,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:36:09,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:36:09,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 85 [2024-02-05 10:36:09,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 10:36:09,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:09,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 85 [2024-02-05 10:36:09,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:36:11,538 INFO L124 PetriNetUnfolderBase]: 18529/27823 cut-off events. [2024-02-05 10:36:11,538 INFO L125 PetriNetUnfolderBase]: For 10608/11982 co-relation queries the response was YES. [2024-02-05 10:36:11,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60152 conditions, 27823 events. 18529/27823 cut-off events. For 10608/11982 co-relation queries the response was YES. Maximal size of possible extension queue 1462. Compared 203742 event pairs, 3839 based on Foata normal form. 584/27012 useless extension candidates. Maximal degree in co-relation 60130. Up to 21677 conditions per place. [2024-02-05 10:36:11,670 INFO L140 encePairwiseOnDemand]: 81/85 looper letters, 85 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2024-02-05 10:36:11,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 105 transitions, 472 flow [2024-02-05 10:36:11,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:36:11,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:36:11,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2024-02-05 10:36:11,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5941176470588235 [2024-02-05 10:36:11,672 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 181 flow. Second operand 4 states and 202 transitions. [2024-02-05 10:36:11,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 105 transitions, 472 flow [2024-02-05 10:36:11,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 105 transitions, 469 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-05 10:36:11,681 INFO L231 Difference]: Finished difference. Result has 74 places, 66 transitions, 180 flow [2024-02-05 10:36:11,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=74, PETRI_TRANSITIONS=66} [2024-02-05 10:36:11,683 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -15 predicate places. [2024-02-05 10:36:11,683 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 66 transitions, 180 flow [2024-02-05 10:36:11,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 10:36:11,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:11,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:36:11,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-05 10:36:11,684 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-05 10:36:11,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:11,685 INFO L85 PathProgramCache]: Analyzing trace with hash -284581721, now seen corresponding path program 1 times [2024-02-05 10:36:11,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:11,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087492035] [2024-02-05 10:36:11,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:11,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:11,830 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 10:36:11,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:11,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087492035] [2024-02-05 10:36:11,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087492035] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:11,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:11,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:36:11,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011779369] [2024-02-05 10:36:11,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:11,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:36:11,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:11,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:36:11,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:36:11,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 85 [2024-02-05 10:36:11,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 66 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 10:36:11,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:11,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 85 [2024-02-05 10:36:11,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:36:13,929 INFO L124 PetriNetUnfolderBase]: 24487/32529 cut-off events. [2024-02-05 10:36:13,929 INFO L125 PetriNetUnfolderBase]: For 11359/13075 co-relation queries the response was YES. [2024-02-05 10:36:13,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75787 conditions, 32529 events. 24487/32529 cut-off events. For 11359/13075 co-relation queries the response was YES. Maximal size of possible extension queue 1540. Compared 199031 event pairs, 4017 based on Foata normal form. 1506/31804 useless extension candidates. Maximal degree in co-relation 75765. Up to 14218 conditions per place. [2024-02-05 10:36:14,100 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 101 selfloop transitions, 4 changer transitions 0/120 dead transitions. [2024-02-05 10:36:14,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 120 transitions, 552 flow [2024-02-05 10:36:14,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:36:14,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:36:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 206 transitions. [2024-02-05 10:36:14,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6058823529411764 [2024-02-05 10:36:14,102 INFO L175 Difference]: Start difference. First operand has 74 places, 66 transitions, 180 flow. Second operand 4 states and 206 transitions. [2024-02-05 10:36:14,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 120 transitions, 552 flow [2024-02-05 10:36:14,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 120 transitions, 545 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:36:14,107 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 196 flow [2024-02-05 10:36:14,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2024-02-05 10:36:14,108 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -14 predicate places. [2024-02-05 10:36:14,108 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 196 flow [2024-02-05 10:36:14,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 10:36:14,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:14,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:36:14,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-05 10:36:14,109 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-05 10:36:14,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:14,110 INFO L85 PathProgramCache]: Analyzing trace with hash -715017796, now seen corresponding path program 1 times [2024-02-05 10:36:14,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:14,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800616907] [2024-02-05 10:36:14,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:14,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:14,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:36:14,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:14,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800616907] [2024-02-05 10:36:14,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800616907] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:14,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:14,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:36:14,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495607337] [2024-02-05 10:36:14,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:14,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:36:14,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:14,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:36:14,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:36:14,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 85 [2024-02-05 10:36:14,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 10:36:14,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:14,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 85 [2024-02-05 10:36:14,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:36:16,630 INFO L124 PetriNetUnfolderBase]: 22757/30520 cut-off events. [2024-02-05 10:36:16,631 INFO L125 PetriNetUnfolderBase]: For 22688/25678 co-relation queries the response was YES. [2024-02-05 10:36:16,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77412 conditions, 30520 events. 22757/30520 cut-off events. For 22688/25678 co-relation queries the response was YES. Maximal size of possible extension queue 1293. Compared 180417 event pairs, 3721 based on Foata normal form. 1777/30677 useless extension candidates. Maximal degree in co-relation 77388. Up to 13564 conditions per place. [2024-02-05 10:36:16,781 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 99 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2024-02-05 10:36:16,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 118 transitions, 578 flow [2024-02-05 10:36:16,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:36:16,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:36:16,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-02-05 10:36:16,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5970588235294118 [2024-02-05 10:36:16,782 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 196 flow. Second operand 4 states and 203 transitions. [2024-02-05 10:36:16,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 118 transitions, 578 flow [2024-02-05 10:36:16,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 118 transitions, 575 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-05 10:36:16,820 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 214 flow [2024-02-05 10:36:16,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-02-05 10:36:16,821 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -12 predicate places. [2024-02-05 10:36:16,821 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 214 flow [2024-02-05 10:36:16,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 10:36:16,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:16,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:36:16,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-05 10:36:16,822 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-05 10:36:16,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:16,822 INFO L85 PathProgramCache]: Analyzing trace with hash -716239869, now seen corresponding path program 1 times [2024-02-05 10:36:16,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:16,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841543383] [2024-02-05 10:36:16,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:16,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:36:17,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:17,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841543383] [2024-02-05 10:36:17,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841543383] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:17,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:17,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:36:17,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765706795] [2024-02-05 10:36:17,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:17,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:36:17,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:17,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:36:17,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:36:17,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 85 [2024-02-05 10:36:17,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 10:36:17,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:17,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 85 [2024-02-05 10:36:17,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:36:18,918 INFO L124 PetriNetUnfolderBase]: 17206/24416 cut-off events. [2024-02-05 10:36:18,918 INFO L125 PetriNetUnfolderBase]: For 24281/28131 co-relation queries the response was YES. [2024-02-05 10:36:18,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63948 conditions, 24416 events. 17206/24416 cut-off events. For 24281/28131 co-relation queries the response was YES. Maximal size of possible extension queue 1007. Compared 155200 event pairs, 1115 based on Foata normal form. 1618/25252 useless extension candidates. Maximal degree in co-relation 63922. Up to 17385 conditions per place. [2024-02-05 10:36:19,035 INFO L140 encePairwiseOnDemand]: 81/85 looper letters, 93 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2024-02-05 10:36:19,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 111 transitions, 591 flow [2024-02-05 10:36:19,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:36:19,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:36:19,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2024-02-05 10:36:19,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5941176470588235 [2024-02-05 10:36:19,036 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 214 flow. Second operand 4 states and 202 transitions. [2024-02-05 10:36:19,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 111 transitions, 591 flow [2024-02-05 10:36:19,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 111 transitions, 588 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-05 10:36:19,051 INFO L231 Difference]: Finished difference. Result has 77 places, 64 transitions, 213 flow [2024-02-05 10:36:19,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=77, PETRI_TRANSITIONS=64} [2024-02-05 10:36:19,052 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -12 predicate places. [2024-02-05 10:36:19,052 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 64 transitions, 213 flow [2024-02-05 10:36:19,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 10:36:19,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:19,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:36:19,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-05 10:36:19,053 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-05 10:36:19,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:19,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1111729018, now seen corresponding path program 1 times [2024-02-05 10:36:19,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:19,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029389572] [2024-02-05 10:36:19,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:19,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:19,183 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 10:36:19,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:19,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029389572] [2024-02-05 10:36:19,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029389572] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:19,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:19,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:36:19,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163183831] [2024-02-05 10:36:19,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:19,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:36:19,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:19,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:36:19,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:36:19,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 85 [2024-02-05 10:36:19,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 64 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 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 10:36:19,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:19,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 85 [2024-02-05 10:36:19,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:36:21,410 INFO L124 PetriNetUnfolderBase]: 21742/28684 cut-off events. [2024-02-05 10:36:21,410 INFO L125 PetriNetUnfolderBase]: For 27826/32269 co-relation queries the response was YES. [2024-02-05 10:36:21,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79076 conditions, 28684 events. 21742/28684 cut-off events. For 27826/32269 co-relation queries the response was YES. Maximal size of possible extension queue 1068. Compared 157183 event pairs, 4307 based on Foata normal form. 2365/29789 useless extension candidates. Maximal degree in co-relation 79050. Up to 11514 conditions per place. [2024-02-05 10:36:21,576 INFO L140 encePairwiseOnDemand]: 79/85 looper letters, 101 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2024-02-05 10:36:21,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 118 transitions, 629 flow [2024-02-05 10:36:21,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:36:21,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:36:21,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-02-05 10:36:21,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2024-02-05 10:36:21,578 INFO L175 Difference]: Start difference. First operand has 77 places, 64 transitions, 213 flow. Second operand 4 states and 200 transitions. [2024-02-05 10:36:21,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 118 transitions, 629 flow [2024-02-05 10:36:21,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 118 transitions, 626 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:36:21,607 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 229 flow [2024-02-05 10:36:21,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2024-02-05 10:36:21,608 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -11 predicate places. [2024-02-05 10:36:21,609 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 229 flow [2024-02-05 10:36:21,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 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 10:36:21,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:21,609 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] [2024-02-05 10:36:21,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-05 10:36:21,610 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-05 10:36:21,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:21,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1781484970, now seen corresponding path program 1 times [2024-02-05 10:36:21,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:21,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195931301] [2024-02-05 10:36:21,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:21,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:21,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:36:21,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:21,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195931301] [2024-02-05 10:36:21,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195931301] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:21,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:21,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:36:21,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751986847] [2024-02-05 10:36:21,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:21,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:36:21,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:21,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:36:21,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:36:21,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 85 [2024-02-05 10:36:21,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 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 10:36:21,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:21,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 85 [2024-02-05 10:36:21,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:36:25,422 INFO L124 PetriNetUnfolderBase]: 36705/49202 cut-off events. [2024-02-05 10:36:25,422 INFO L125 PetriNetUnfolderBase]: For 57773/57773 co-relation queries the response was YES. [2024-02-05 10:36:25,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145910 conditions, 49202 events. 36705/49202 cut-off events. For 57773/57773 co-relation queries the response was YES. Maximal size of possible extension queue 1605. Compared 297459 event pairs, 12848 based on Foata normal form. 1756/50749 useless extension candidates. Maximal degree in co-relation 145882. Up to 26453 conditions per place. [2024-02-05 10:36:25,750 INFO L140 encePairwiseOnDemand]: 77/85 looper letters, 113 selfloop transitions, 5 changer transitions 6/133 dead transitions. [2024-02-05 10:36:25,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 133 transitions, 741 flow [2024-02-05 10:36:25,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:36:25,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:36:25,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 224 transitions. [2024-02-05 10:36:25,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6588235294117647 [2024-02-05 10:36:25,752 INFO L175 Difference]: Start difference. First operand has 78 places, 64 transitions, 229 flow. Second operand 4 states and 224 transitions. [2024-02-05 10:36:25,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 133 transitions, 741 flow [2024-02-05 10:36:25,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 133 transitions, 738 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-05 10:36:25,980 INFO L231 Difference]: Finished difference. Result has 82 places, 65 transitions, 264 flow [2024-02-05 10:36:25,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=82, PETRI_TRANSITIONS=65} [2024-02-05 10:36:25,982 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -7 predicate places. [2024-02-05 10:36:25,982 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 65 transitions, 264 flow [2024-02-05 10:36:25,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 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 10:36:25,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:36:25,982 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] [2024-02-05 10:36:25,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-05 10:36:25,982 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (and 50 more)] === [2024-02-05 10:36:25,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:36:25,983 INFO L85 PathProgramCache]: Analyzing trace with hash -767492024, now seen corresponding path program 2 times [2024-02-05 10:36:25,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:36:25,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484764854] [2024-02-05 10:36:25,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:36:25,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:36:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:36:26,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:36:26,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:36:26,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484764854] [2024-02-05 10:36:26,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484764854] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:36:26,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:36:26,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:36:26,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791472883] [2024-02-05 10:36:26,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:36:26,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:36:26,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:36:26,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:36:26,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:36:26,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 85 [2024-02-05 10:36:26,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 65 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 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 10:36:26,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:36:26,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 85 [2024-02-05 10:36:26,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand