./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-proofs-counter-add-4-semi-Q67.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 59af5db6 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-proofs-counter-add-4-semi-Q67.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-proofs-counter-add-4-semi-Q67.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-59af5db-m [2024-02-02 09:21:49,078 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:21:49,112 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:21:49,115 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:21:49,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:21:49,130 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:21:49,130 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:21:49,131 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:21:49,131 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:21:49,132 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:21:49,132 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:21:49,132 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:21:49,133 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:21:49,133 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:21:49,133 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:21:49,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:21:49,134 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:21:49,134 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:21:49,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:21:49,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:21:49,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:21:49,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:21:49,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:21:49,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:21:49,136 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:21:49,136 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:21:49,136 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:21:49,136 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:21:49,137 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:21:49,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:21:49,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:21:49,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:21:49,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:21:49,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:21:49,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:21:49,138 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:21:49,138 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:21:49,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:21:49,139 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:21:49,139 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:21:49,139 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:21:49,140 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:21:49,140 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:21:49,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:21:49,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:21:49,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:21:49,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:21:49,419 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:21:49,420 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:21:49,421 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-proofs-counter-add-4-semi-Q67.wvr.yml/witness.yml [2024-02-02 09:21:49,549 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:21:49,550 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:21:49,550 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2024-02-02 09:21:50,658 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:21:50,826 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:21:50,827 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2024-02-02 09:21:50,833 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3518e5e17/a157b9ed9a5c41cb8931243ebf35e641/FLAG12a47cd77 [2024-02-02 09:21:50,847 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3518e5e17/a157b9ed9a5c41cb8931243ebf35e641 [2024-02-02 09:21:50,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:21:50,851 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:21:50,852 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:21:50,852 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:21:50,856 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:21:50,857 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:21:49" (1/2) ... [2024-02-02 09:21:50,857 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@733f8ce6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:50, skipping insertion in model container [2024-02-02 09:21:50,858 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:21:49" (1/2) ... [2024-02-02 09:21:50,859 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@d534a73 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:21:50, skipping insertion in model container [2024-02-02 09:21:50,859 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:21:50" (2/2) ... [2024-02-02 09:21:50,859 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@733f8ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:21:50, skipping insertion in model container [2024-02-02 09:21:50,859 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:21:50" (2/2) ... [2024-02-02 09:21:50,859 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:21:50,889 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:21:50,890 INFO L101 nessWitnessExtractor]: Loop invariant at [L63-L68] (unsigned long )_argptr == 0UL [2024-02-02 09:21:50,890 INFO L101 nessWitnessExtractor]: Location invariant before [L75-L75] (unsigned long )_argptr == 0UL [2024-02-02 09:21:50,890 INFO L101 nessWitnessExtractor]: Location invariant before [L79-L79] (((((0 <= i1) && (0 <= i2)) && (0 <= j1)) && (1 <= j2)) && (counter <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:21:50,891 INFO L101 nessWitnessExtractor]: Location invariant before [L42-L42] ((((0 <= i1) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:21:50,891 INFO L101 nessWitnessExtractor]: Location invariant before [L89-L89] (((((((i1 == 0) && (i2 == 0)) && (N2 == 0)) && (counter == 0)) && (j1 == 0)) && (j2 == 0)) && (M1 == 0)) && (M2 == 0) [2024-02-02 09:21:50,891 INFO L101 nessWitnessExtractor]: Location invariant before [L95-L95] ((((i1 == 0) && (i2 == 0)) && (counter == 0)) && (j1 == 0)) && (j2 == 0) [2024-02-02 09:21:50,891 INFO L101 nessWitnessExtractor]: Location invariant before [L67-L67] (((((-2147483647 <= counter) && (0 <= i1)) && (0 <= i2)) && (0 <= j2)) && (1 <= j1)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:21:50,891 INFO L101 nessWitnessExtractor]: Location invariant before [L64-L64] (unsigned long )_argptr == 0UL [2024-02-02 09:21:50,891 INFO L101 nessWitnessExtractor]: Location invariant before [L65-L65] ((((0 <= i1) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:21:50,891 INFO L101 nessWitnessExtractor]: Loop invariant at [L40-L45] (unsigned long )_argptr == 0UL [2024-02-02 09:21:50,891 INFO L101 nessWitnessExtractor]: Location invariant before [L91-L91] (((((i1 == 0) && (i2 == 0)) && (counter == 0)) && (j1 == 0)) && (j2 == 0)) && (M2 == 0) [2024-02-02 09:21:50,892 INFO L101 nessWitnessExtractor]: Location invariant before [L90-L90] ((((((i1 == 0) && (i2 == 0)) && (counter == 0)) && (j1 == 0)) && (j2 == 0)) && (M1 == 0)) && (M2 == 0) [2024-02-02 09:21:50,892 INFO L101 nessWitnessExtractor]: Loop invariant at [L51-L57] (unsigned long )_argptr == 0UL [2024-02-02 09:21:50,892 INFO L101 nessWitnessExtractor]: Location invariant before [L92-L92] ((((i1 == 0) && (i2 == 0)) && (counter == 0)) && (j1 == 0)) && (j2 == 0) [2024-02-02 09:21:50,892 INFO L101 nessWitnessExtractor]: Location invariant before [L78-L78] (((((0 <= i1) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && (counter <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:21:50,892 INFO L101 nessWitnessExtractor]: Location invariant before [L41-L41] (unsigned long )_argptr == 0UL [2024-02-02 09:21:50,892 INFO L101 nessWitnessExtractor]: Location invariant before [L82-L82] (unsigned long )_argptr == 0UL [2024-02-02 09:21:50,892 INFO L101 nessWitnessExtractor]: Location invariant before [L70-L70] (unsigned long )_argptr == 0UL [2024-02-02 09:21:50,892 INFO L101 nessWitnessExtractor]: Location invariant before [L22-L25] (((((i1 == 0) && (i2 == 0)) && (counter == 0)) && (j1 == 0)) && (j2 == 0)) && (M2 == 0) [2024-02-02 09:21:50,893 INFO L101 nessWitnessExtractor]: Loop invariant at [L74-L80] (unsigned long )_argptr == 0UL [2024-02-02 09:21:50,893 INFO L101 nessWitnessExtractor]: Location invariant before [L88-L88] ((((((((i1 == 0) && (i2 == 0)) && (N1 == 0)) && (N2 == 0)) && (counter == 0)) && (j1 == 0)) && (j2 == 0)) && (M1 == 0)) && (M2 == 0) [2024-02-02 09:21:50,893 INFO L101 nessWitnessExtractor]: Location invariant before [L59-L59] (unsigned long )_argptr == 0UL [2024-02-02 09:21:50,893 INFO L101 nessWitnessExtractor]: Location invariant before [L43-L43] (((((-2147483647 <= counter) && (0 <= i1)) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:21:50,893 INFO L101 nessWitnessExtractor]: Location invariant before [L54-L54] ((((0 <= i1) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:21:50,894 INFO L101 nessWitnessExtractor]: Location invariant before [L44-L44] (((((-2147483647 <= counter) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && (1 <= i1)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:21:50,894 INFO L101 nessWitnessExtractor]: Location invariant before [L77-L77] ((((0 <= i1) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:21:50,894 INFO L101 nessWitnessExtractor]: Location invariant before [L53-L53] ((((0 <= i1) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:21:50,894 INFO L101 nessWitnessExtractor]: Location invariant before [L56-L56] (((((0 <= i1) && (0 <= j1)) && (0 <= j2)) && (1 <= i2)) && (counter <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:21:50,894 INFO L101 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-02-02 09:21:50,894 INFO L101 nessWitnessExtractor]: Location invariant before [L66-L66] (((((-2147483647 <= counter) && (0 <= i1)) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:21:50,894 INFO L101 nessWitnessExtractor]: Location invariant before [L47-L47] (unsigned long )_argptr == 0UL [2024-02-02 09:21:50,894 INFO L101 nessWitnessExtractor]: Location invariant before [L76-L76] ((((0 <= i1) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:21:50,895 INFO L101 nessWitnessExtractor]: Location invariant before [L55-L55] (((((0 <= i1) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && (counter <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-02-02 09:21:50,914 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:21:51,097 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-proofs-counter-add-4-semi-Q67.wvr.c[2663,2676] [2024-02-02 09:21:51,105 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:21:51,113 INFO L202 MainTranslator]: Completed pre-run [2024-02-02 09:21:51,124 WARN L424 MainDispatcher]: Unable to annotate extern int pthread_create (pthread_t *__restrict __newthread, const pthread_attr_t *__restrict __attr, void *(*__start_routine) (void *), void *__restrict __arg) __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 3))); with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:21:51,188 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-proofs-counter-add-4-semi-Q67.wvr.c[2663,2676] [2024-02-02 09:21:51,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:21:51,216 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:21:51,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:21:51 WrapperNode [2024-02-02 09:21:51,216 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:21:51,217 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:21:51,217 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:21:51,217 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:21:51,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:21:51" (1/1) ... [2024-02-02 09:21:51,228 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:21:51" (1/1) ... [2024-02-02 09:21:51,248 INFO L138 Inliner]: procedures = 22, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 160 [2024-02-02 09:21:51,248 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:21:51,249 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:21:51,249 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:21:51,249 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:21:51,257 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:21:51" (1/1) ... [2024-02-02 09:21:51,260 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:21:51" (1/1) ... [2024-02-02 09:21:51,262 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:21:51" (1/1) ... [2024-02-02 09:21:51,280 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]. [2024-02-02 09:21:51,280 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:21:51" (1/1) ... [2024-02-02 09:21:51,281 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:21:51" (1/1) ... [2024-02-02 09:21:51,287 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:21:51" (1/1) ... [2024-02-02 09:21:51,290 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:21:51" (1/1) ... [2024-02-02 09:21:51,292 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:21:51" (1/1) ... [2024-02-02 09:21:51,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:21:51" (1/1) ... [2024-02-02 09:21:51,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:21:51,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:21:51,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:21:51,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:21:51,297 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:21:51" (1/1) ... [2024-02-02 09:21:51,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:21:51,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:21:51,348 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) [2024-02-02 09:21:51,366 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 [2024-02-02 09:21:51,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:21:51,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-02 09:21:51,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-02 09:21:51,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-02 09:21:51,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-02 09:21:51,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-02 09:21:51,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-02 09:21:51,419 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-02 09:21:51,419 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-02 09:21:51,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:21:51,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:21:51,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:21:51,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-02 09:21:51,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-02 09:21:51,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:21:51,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:21:51,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:21:51,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:21:51,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-02 09:21:51,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-02 09:21:51,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-02 09:21:51,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-02 09:21:51,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:21:51,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:21:51,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-02 09:21:51,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-02 09:21:51,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-02 09:21:51,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-02 09:21:51,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-02 09:21:51,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:21:51,425 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 09:21:51,574 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:21:51,576 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:21:51,970 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:21:51,970 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:21:52,181 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:21:52,182 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-02-02 09:21:52,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:21:52 BoogieIcfgContainer [2024-02-02 09:21:52,183 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:21:52,186 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:21:52,187 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:21:52,189 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:21:52,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:21:49" (1/4) ... [2024-02-02 09:21:52,190 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eead570 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:21:52, skipping insertion in model container [2024-02-02 09:21:52,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:21:50" (2/4) ... [2024-02-02 09:21:52,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eead570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:21:52, skipping insertion in model container [2024-02-02 09:21:52,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:21:51" (3/4) ... [2024-02-02 09:21:52,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eead570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:21:52, skipping insertion in model container [2024-02-02 09:21:52,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:21:52" (4/4) ... [2024-02-02 09:21:52,194 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2024-02-02 09:21:52,207 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:21:52,207 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2024-02-02 09:21:52,207 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:21:52,268 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-02 09:21:52,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 97 transitions, 222 flow [2024-02-02 09:21:52,346 INFO L124 PetriNetUnfolderBase]: 4/93 cut-off events. [2024-02-02 09:21:52,346 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-02 09:21:52,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 93 events. 4/93 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 302 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2024-02-02 09:21:52,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 97 transitions, 222 flow [2024-02-02 09:21:52,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 92 transitions, 208 flow [2024-02-02 09:21:52,371 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:21:52,380 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;@1e10ccf8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:21:52,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2024-02-02 09:21:52,382 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:21:52,382 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:21:52,382 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:21:52,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:21:52,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:21:52,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:21:52,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:21:52,386 INFO L85 PathProgramCache]: Analyzing trace with hash 17368, now seen corresponding path program 1 times [2024-02-02 09:21:52,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:21:52,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814620061] [2024-02-02 09:21:52,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:21:52,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:21:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:21:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:21:52,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:21:52,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814620061] [2024-02-02 09:21:52,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814620061] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:21:52,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:21:52,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:21:52,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850461040] [2024-02-02 09:21:52,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:21:52,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:21:52,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:21:52,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:21:52,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:21:52,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 97 [2024-02-02 09:21:52,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 92 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-02-02 09:21:52,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:21:52,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 97 [2024-02-02 09:21:52,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:21:55,168 INFO L124 PetriNetUnfolderBase]: 18247/26725 cut-off events. [2024-02-02 09:21:55,168 INFO L125 PetriNetUnfolderBase]: For 687/687 co-relation queries the response was YES. [2024-02-02 09:21:55,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52295 conditions, 26725 events. 18247/26725 cut-off events. For 687/687 co-relation queries the response was YES. Maximal size of possible extension queue 1981. Compared 207586 event pairs, 17952 based on Foata normal form. 0/14691 useless extension candidates. Maximal degree in co-relation 46372. Up to 24364 conditions per place. [2024-02-02 09:21:55,419 INFO L140 encePairwiseOnDemand]: 88/97 looper letters, 50 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-02-02 09:21:55,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 85 transitions, 298 flow [2024-02-02 09:21:55,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:21:55,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:21:55,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2024-02-02 09:21:55,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.584192439862543 [2024-02-02 09:21:55,430 INFO L175 Difference]: Start difference. First operand has 101 places, 92 transitions, 208 flow. Second operand 3 states and 170 transitions. [2024-02-02 09:21:55,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 85 transitions, 298 flow [2024-02-02 09:21:55,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 85 transitions, 282 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-02 09:21:55,468 INFO L231 Difference]: Finished difference. Result has 88 places, 85 transitions, 182 flow [2024-02-02 09:21:55,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=88, PETRI_TRANSITIONS=85} [2024-02-02 09:21:55,472 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -13 predicate places. [2024-02-02 09:21:55,472 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 182 flow [2024-02-02 09:21:55,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-02-02 09:21:55,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:21:55,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-02 09:21:55,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:21:55,473 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:21:55,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:21:55,474 INFO L85 PathProgramCache]: Analyzing trace with hash 538905, now seen corresponding path program 1 times [2024-02-02 09:21:55,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:21:55,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737276584] [2024-02-02 09:21:55,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:21:55,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:21:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:21:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:21:55,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:21:55,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737276584] [2024-02-02 09:21:55,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737276584] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:21:55,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:21:55,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:21:55,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693482629] [2024-02-02 09:21:55,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:21:55,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:21:55,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:21:55,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:21:55,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:21:55,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-02-02 09:21:55,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 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) [2024-02-02 09:21:55,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:21:55,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-02-02 09:21:55,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:21:57,253 INFO L124 PetriNetUnfolderBase]: 15803/23180 cut-off events. [2024-02-02 09:21:57,253 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-02-02 09:21:57,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44690 conditions, 23180 events. 15803/23180 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 2202. Compared 191327 event pairs, 15551 based on Foata normal form. 0/13178 useless extension candidates. Maximal degree in co-relation 44681. Up to 21161 conditions per place. [2024-02-02 09:21:57,394 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 48 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2024-02-02 09:21:57,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 280 flow [2024-02-02 09:21:57,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:21:57,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:21:57,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2024-02-02 09:21:57,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5773195876288659 [2024-02-02 09:21:57,399 INFO L175 Difference]: Start difference. First operand has 88 places, 85 transitions, 182 flow. Second operand 3 states and 168 transitions. [2024-02-02 09:21:57,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 280 flow [2024-02-02 09:21:57,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 84 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:21:57,402 INFO L231 Difference]: Finished difference. Result has 87 places, 84 transitions, 180 flow [2024-02-02 09:21:57,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=87, PETRI_TRANSITIONS=84} [2024-02-02 09:21:57,403 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -14 predicate places. [2024-02-02 09:21:57,403 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 84 transitions, 180 flow [2024-02-02 09:21:57,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 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) [2024-02-02 09:21:57,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:21:57,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-02 09:21:57,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:21:57,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:21:57,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:21:57,404 INFO L85 PathProgramCache]: Analyzing trace with hash 16706626, now seen corresponding path program 1 times [2024-02-02 09:21:57,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:21:57,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580979527] [2024-02-02 09:21:57,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:21:57,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:21:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:21:57,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:21:57,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:21:57,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580979527] [2024-02-02 09:21:57,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580979527] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:21:57,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:21:57,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:21:57,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673438089] [2024-02-02 09:21:57,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:21:57,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:21:57,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:21:57,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:21:57,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:21:57,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 97 [2024-02-02 09:21:57,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 84 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2024-02-02 09:21:57,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:21:57,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 97 [2024-02-02 09:21:57,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:21:59,027 INFO L124 PetriNetUnfolderBase]: 13456/19768 cut-off events. [2024-02-02 09:21:59,028 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-02-02 09:21:59,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38141 conditions, 19768 events. 13456/19768 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 2140. Compared 166520 event pairs, 13245 based on Foata normal form. 0/11620 useless extension candidates. Maximal degree in co-relation 38130. Up to 18071 conditions per place. [2024-02-02 09:21:59,131 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 46 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-02-02 09:21:59,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 83 transitions, 274 flow [2024-02-02 09:21:59,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:21:59,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:21:59,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2024-02-02 09:21:59,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5910652920962199 [2024-02-02 09:21:59,133 INFO L175 Difference]: Start difference. First operand has 87 places, 84 transitions, 180 flow. Second operand 3 states and 172 transitions. [2024-02-02 09:21:59,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 83 transitions, 274 flow [2024-02-02 09:21:59,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:21:59,134 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 178 flow [2024-02-02 09:21:59,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2024-02-02 09:21:59,135 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -15 predicate places. [2024-02-02 09:21:59,135 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 178 flow [2024-02-02 09:21:59,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2024-02-02 09:21:59,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:21:59,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 09:21:59,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:21:59,136 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:21:59,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:21:59,137 INFO L85 PathProgramCache]: Analyzing trace with hash 517905937, now seen corresponding path program 1 times [2024-02-02 09:21:59,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:21:59,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348820726] [2024-02-02 09:21:59,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:21:59,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:21:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:21:59,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:21:59,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:21:59,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348820726] [2024-02-02 09:21:59,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348820726] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:21:59,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:21:59,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:21:59,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602611367] [2024-02-02 09:21:59,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:21:59,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:21:59,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:21:59,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:21:59,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:21:59,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2024-02-02 09:21:59,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 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) [2024-02-02 09:21:59,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:21:59,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2024-02-02 09:21:59,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:00,057 INFO L124 PetriNetUnfolderBase]: 11458/16910 cut-off events. [2024-02-02 09:22:00,057 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-02-02 09:22:00,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32604 conditions, 16910 events. 11458/16910 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 1958. Compared 139275 event pairs, 11277 based on Foata normal form. 0/10197 useless extension candidates. Maximal degree in co-relation 32591. Up to 15427 conditions per place. [2024-02-02 09:22:00,184 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 44 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2024-02-02 09:22:00,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 82 transitions, 268 flow [2024-02-02 09:22:00,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:22:00,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:22:00,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-02-02 09:22:00,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6048109965635738 [2024-02-02 09:22:00,186 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 178 flow. Second operand 3 states and 176 transitions. [2024-02-02 09:22:00,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 82 transitions, 268 flow [2024-02-02 09:22:00,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 82 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:22:00,188 INFO L231 Difference]: Finished difference. Result has 85 places, 82 transitions, 176 flow [2024-02-02 09:22:00,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=85, PETRI_TRANSITIONS=82} [2024-02-02 09:22:00,189 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -16 predicate places. [2024-02-02 09:22:00,189 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 82 transitions, 176 flow [2024-02-02 09:22:00,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 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) [2024-02-02 09:22:00,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:00,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-02 09:22:00,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 09:22:00,190 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:22:00,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:00,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1124784578, now seen corresponding path program 1 times [2024-02-02 09:22:00,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:00,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580778436] [2024-02-02 09:22:00,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:00,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:00,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:00,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580778436] [2024-02-02 09:22:00,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580778436] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:00,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:00,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:22:00,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964748392] [2024-02-02 09:22:00,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:00,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:22:00,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:00,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:22:00,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:22:00,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 97 [2024-02-02 09:22:00,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 82 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-02-02 09:22:00,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:00,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 97 [2024-02-02 09:22:00,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:02,154 INFO L124 PetriNetUnfolderBase]: 20003/30016 cut-off events. [2024-02-02 09:22:02,154 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-02-02 09:22:02,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54738 conditions, 30016 events. 20003/30016 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 2131. Compared 224973 event pairs, 4141 based on Foata normal form. 1/18574 useless extension candidates. Maximal degree in co-relation 54723. Up to 21567 conditions per place. [2024-02-02 09:22:02,408 INFO L140 encePairwiseOnDemand]: 85/97 looper letters, 67 selfloop transitions, 3 changer transitions 1/108 dead transitions. [2024-02-02 09:22:02,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 108 transitions, 377 flow [2024-02-02 09:22:02,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:22:02,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:22:02,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2024-02-02 09:22:02,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.738831615120275 [2024-02-02 09:22:02,409 INFO L175 Difference]: Start difference. First operand has 85 places, 82 transitions, 176 flow. Second operand 3 states and 215 transitions. [2024-02-02 09:22:02,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 108 transitions, 377 flow [2024-02-02 09:22:02,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 108 transitions, 373 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:22:02,411 INFO L231 Difference]: Finished difference. Result has 84 places, 82 transitions, 199 flow [2024-02-02 09:22:02,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=84, PETRI_TRANSITIONS=82} [2024-02-02 09:22:02,412 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -17 predicate places. [2024-02-02 09:22:02,412 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 82 transitions, 199 flow [2024-02-02 09:22:02,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-02-02 09:22:02,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:02,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:02,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 09:22:02,413 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:22:02,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:02,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1448340995, now seen corresponding path program 1 times [2024-02-02 09:22:02,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:02,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10544846] [2024-02-02 09:22:02,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:02,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:02,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:02,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:02,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10544846] [2024-02-02 09:22:02,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10544846] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:02,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:02,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:22:02,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24398577] [2024-02-02 09:22:02,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:02,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:22:02,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:02,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:22:02,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:22:02,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 97 [2024-02-02 09:22:02,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 82 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2024-02-02 09:22:02,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:02,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 97 [2024-02-02 09:22:02,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:04,435 INFO L124 PetriNetUnfolderBase]: 22093/31449 cut-off events. [2024-02-02 09:22:04,435 INFO L125 PetriNetUnfolderBase]: For 3624/3624 co-relation queries the response was YES. [2024-02-02 09:22:04,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68651 conditions, 31449 events. 22093/31449 cut-off events. For 3624/3624 co-relation queries the response was YES. Maximal size of possible extension queue 2259. Compared 212622 event pairs, 9931 based on Foata normal form. 2216/26938 useless extension candidates. Maximal degree in co-relation 21810. Up to 24969 conditions per place. [2024-02-02 09:22:04,676 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 67 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-02-02 09:22:04,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 101 transitions, 393 flow [2024-02-02 09:22:04,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:22:04,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:22:04,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 238 transitions. [2024-02-02 09:22:04,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6134020618556701 [2024-02-02 09:22:04,678 INFO L175 Difference]: Start difference. First operand has 84 places, 82 transitions, 199 flow. Second operand 4 states and 238 transitions. [2024-02-02 09:22:04,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 101 transitions, 393 flow [2024-02-02 09:22:04,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 101 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:22:04,681 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 192 flow [2024-02-02 09:22:04,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2024-02-02 09:22:04,681 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -19 predicate places. [2024-02-02 09:22:04,682 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 192 flow [2024-02-02 09:22:04,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2024-02-02 09:22:04,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:04,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:04,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 09:22:04,682 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:22:04,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:04,683 INFO L85 PathProgramCache]: Analyzing trace with hash 283599647, now seen corresponding path program 1 times [2024-02-02 09:22:04,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:04,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480183716] [2024-02-02 09:22:04,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:04,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:04,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:04,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:04,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480183716] [2024-02-02 09:22:04,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480183716] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:04,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:04,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:22:04,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043830650] [2024-02-02 09:22:04,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:04,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:22:04,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:04,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:22:04,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:22:04,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 97 [2024-02-02 09:22:04,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2024-02-02 09:22:04,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:04,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 97 [2024-02-02 09:22:04,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:06,612 INFO L124 PetriNetUnfolderBase]: 21815/31438 cut-off events. [2024-02-02 09:22:06,613 INFO L125 PetriNetUnfolderBase]: For 3519/3519 co-relation queries the response was YES. [2024-02-02 09:22:06,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67849 conditions, 31438 events. 21815/31438 cut-off events. For 3519/3519 co-relation queries the response was YES. Maximal size of possible extension queue 2215. Compared 219271 event pairs, 7703 based on Foata normal form. 2423/27454 useless extension candidates. Maximal degree in co-relation 67824. Up to 24243 conditions per place. [2024-02-02 09:22:06,862 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 74 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2024-02-02 09:22:06,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 104 transitions, 421 flow [2024-02-02 09:22:06,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:22:06,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:22:06,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 243 transitions. [2024-02-02 09:22:06,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6262886597938144 [2024-02-02 09:22:06,864 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 192 flow. Second operand 4 states and 243 transitions. [2024-02-02 09:22:06,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 104 transitions, 421 flow [2024-02-02 09:22:06,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 104 transitions, 418 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:22:06,867 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 185 flow [2024-02-02 09:22:06,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2024-02-02 09:22:06,869 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -22 predicate places. [2024-02-02 09:22:06,870 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 185 flow [2024-02-02 09:22:06,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 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) [2024-02-02 09:22:06,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:06,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:06,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-02 09:22:06,871 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:22:06,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:06,871 INFO L85 PathProgramCache]: Analyzing trace with hash 285713392, now seen corresponding path program 1 times [2024-02-02 09:22:06,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:06,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522349538] [2024-02-02 09:22:06,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:06,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:07,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:07,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522349538] [2024-02-02 09:22:07,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522349538] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:07,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:07,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:22:07,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499590940] [2024-02-02 09:22:07,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:07,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:22:07,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:07,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:22:07,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:22:07,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-02-02 09:22:07,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2024-02-02 09:22:07,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:07,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-02-02 09:22:07,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:08,847 INFO L124 PetriNetUnfolderBase]: 26509/38916 cut-off events. [2024-02-02 09:22:08,848 INFO L125 PetriNetUnfolderBase]: For 3115/3609 co-relation queries the response was YES. [2024-02-02 09:22:08,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83310 conditions, 38916 events. 26509/38916 cut-off events. For 3115/3609 co-relation queries the response was YES. Maximal size of possible extension queue 2780. Compared 291391 event pairs, 3875 based on Foata normal form. 199/30728 useless extension candidates. Maximal degree in co-relation 75368. Up to 28633 conditions per place. [2024-02-02 09:22:09,146 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 88 selfloop transitions, 5 changer transitions 1/119 dead transitions. [2024-02-02 09:22:09,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 119 transitions, 480 flow [2024-02-02 09:22:09,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:22:09,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:22:09,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-02-02 09:22:09,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6469072164948454 [2024-02-02 09:22:09,156 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 185 flow. Second operand 4 states and 251 transitions. [2024-02-02 09:22:09,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 119 transitions, 480 flow [2024-02-02 09:22:09,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 119 transitions, 473 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:22:09,165 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 208 flow [2024-02-02 09:22:09,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2024-02-02 09:22:09,171 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -19 predicate places. [2024-02-02 09:22:09,172 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 208 flow [2024-02-02 09:22:09,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2024-02-02 09:22:09,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:09,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:09,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-02 09:22:09,173 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:22:09,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:09,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1954182523, now seen corresponding path program 1 times [2024-02-02 09:22:09,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:09,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088868309] [2024-02-02 09:22:09,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:09,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:09,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:09,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088868309] [2024-02-02 09:22:09,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088868309] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:09,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:09,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:22:09,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391753300] [2024-02-02 09:22:09,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:09,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:22:09,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:09,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:22:09,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:22:09,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 97 [2024-02-02 09:22:09,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2024-02-02 09:22:09,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:09,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 97 [2024-02-02 09:22:09,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:10,811 INFO L124 PetriNetUnfolderBase]: 21835/32365 cut-off events. [2024-02-02 09:22:10,811 INFO L125 PetriNetUnfolderBase]: For 5123/5478 co-relation queries the response was YES. [2024-02-02 09:22:10,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70827 conditions, 32365 events. 21835/32365 cut-off events. For 5123/5478 co-relation queries the response was YES. Maximal size of possible extension queue 2340. Compared 240891 event pairs, 2311 based on Foata normal form. 2553/28732 useless extension candidates. Maximal degree in co-relation 70800. Up to 24651 conditions per place. [2024-02-02 09:22:11,072 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 79 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2024-02-02 09:22:11,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 106 transitions, 467 flow [2024-02-02 09:22:11,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:22:11,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:22:11,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2024-02-02 09:22:11,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6391752577319587 [2024-02-02 09:22:11,074 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 208 flow. Second operand 4 states and 248 transitions. [2024-02-02 09:22:11,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 106 transitions, 467 flow [2024-02-02 09:22:11,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 106 transitions, 455 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:22:11,078 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 196 flow [2024-02-02 09:22:11,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=76, 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=4, PETRI_FLOW=196, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2024-02-02 09:22:11,079 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -22 predicate places. [2024-02-02 09:22:11,079 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 196 flow [2024-02-02 09:22:11,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2024-02-02 09:22:11,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:11,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:11,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-02 09:22:11,079 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:22:11,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:11,080 INFO L85 PathProgramCache]: Analyzing trace with hash 517014403, now seen corresponding path program 1 times [2024-02-02 09:22:11,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:11,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818538358] [2024-02-02 09:22:11,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:11,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:11,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:11,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:11,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818538358] [2024-02-02 09:22:11,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818538358] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:11,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:11,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:22:11,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786983646] [2024-02-02 09:22:11,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:11,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:22:11,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:11,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:22:11,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:22:11,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-02-02 09:22:11,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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) [2024-02-02 09:22:11,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:11,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-02-02 09:22:11,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:13,008 INFO L124 PetriNetUnfolderBase]: 27413/38156 cut-off events. [2024-02-02 09:22:13,008 INFO L125 PetriNetUnfolderBase]: For 5276/7262 co-relation queries the response was YES. [2024-02-02 09:22:13,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86401 conditions, 38156 events. 27413/38156 cut-off events. For 5276/7262 co-relation queries the response was YES. Maximal size of possible extension queue 2749. Compared 260621 event pairs, 4129 based on Foata normal form. 404/30395 useless extension candidates. Maximal degree in co-relation 86375. Up to 30723 conditions per place. [2024-02-02 09:22:13,230 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 86 selfloop transitions, 8 changer transitions 1/117 dead transitions. [2024-02-02 09:22:13,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 117 transitions, 500 flow [2024-02-02 09:22:13,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:22:13,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:22:13,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 250 transitions. [2024-02-02 09:22:13,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6443298969072165 [2024-02-02 09:22:13,232 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 196 flow. Second operand 4 states and 250 transitions. [2024-02-02 09:22:13,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 117 transitions, 500 flow [2024-02-02 09:22:13,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 117 transitions, 493 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:22:13,234 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 239 flow [2024-02-02 09:22:13,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2024-02-02 09:22:13,235 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -19 predicate places. [2024-02-02 09:22:13,235 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 239 flow [2024-02-02 09:22:13,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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) [2024-02-02 09:22:13,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:13,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:13,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-02 09:22:13,236 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:22:13,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:13,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1067797825, now seen corresponding path program 1 times [2024-02-02 09:22:13,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:13,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358503678] [2024-02-02 09:22:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:13,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:13,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:13,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358503678] [2024-02-02 09:22:13,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358503678] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:13,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:13,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:22:13,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580777970] [2024-02-02 09:22:13,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:13,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:22:13,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:13,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:22:13,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:22:13,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 97 [2024-02-02 09:22:13,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 239 flow. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2024-02-02 09:22:13,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:13,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 97 [2024-02-02 09:22:13,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:14,706 INFO L124 PetriNetUnfolderBase]: 20691/29046 cut-off events. [2024-02-02 09:22:14,706 INFO L125 PetriNetUnfolderBase]: For 6783/7470 co-relation queries the response was YES. [2024-02-02 09:22:14,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67211 conditions, 29046 events. 20691/29046 cut-off events. For 6783/7470 co-relation queries the response was YES. Maximal size of possible extension queue 2170. Compared 204742 event pairs, 1559 based on Foata normal form. 2509/26876 useless extension candidates. Maximal degree in co-relation 67182. Up to 20183 conditions per place. [2024-02-02 09:22:14,918 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 97 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2024-02-02 09:22:14,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 121 transitions, 634 flow [2024-02-02 09:22:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:22:14,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:22:14,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2024-02-02 09:22:14,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6520618556701031 [2024-02-02 09:22:14,920 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 239 flow. Second operand 4 states and 253 transitions. [2024-02-02 09:22:14,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 121 transitions, 634 flow [2024-02-02 09:22:14,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 121 transitions, 615 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:22:14,923 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 228 flow [2024-02-02 09:22:14,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=77, 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=4, PETRI_FLOW=228, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2024-02-02 09:22:14,924 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -21 predicate places. [2024-02-02 09:22:14,924 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 228 flow [2024-02-02 09:22:14,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2024-02-02 09:22:14,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:14,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:14,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-02 09:22:14,924 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:22:14,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:14,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1229536841, now seen corresponding path program 1 times [2024-02-02 09:22:14,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:14,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905533733] [2024-02-02 09:22:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:14,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:14,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:14,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905533733] [2024-02-02 09:22:14,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905533733] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:14,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:14,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:22:14,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464969075] [2024-02-02 09:22:14,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:14,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:22:14,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:14,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:22:14,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:22:15,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-02-02 09:22:15,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2024-02-02 09:22:15,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:15,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-02-02 09:22:15,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:16,860 INFO L124 PetriNetUnfolderBase]: 27345/36930 cut-off events. [2024-02-02 09:22:16,860 INFO L125 PetriNetUnfolderBase]: For 7612/8349 co-relation queries the response was YES. [2024-02-02 09:22:17,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87698 conditions, 36930 events. 27345/36930 cut-off events. For 7612/8349 co-relation queries the response was YES. Maximal size of possible extension queue 2940. Compared 245553 event pairs, 7801 based on Foata normal form. 530/31187 useless extension candidates. Maximal degree in co-relation 87669. Up to 32061 conditions per place. [2024-02-02 09:22:17,195 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 84 selfloop transitions, 10 changer transitions 1/114 dead transitions. [2024-02-02 09:22:17,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 114 transitions, 527 flow [2024-02-02 09:22:17,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:22:17,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:22:17,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 247 transitions. [2024-02-02 09:22:17,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6365979381443299 [2024-02-02 09:22:17,197 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 228 flow. Second operand 4 states and 247 transitions. [2024-02-02 09:22:17,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 114 transitions, 527 flow [2024-02-02 09:22:17,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 114 transitions, 520 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:22:17,201 INFO L231 Difference]: Finished difference. Result has 83 places, 75 transitions, 276 flow [2024-02-02 09:22:17,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=83, PETRI_TRANSITIONS=75} [2024-02-02 09:22:17,202 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -18 predicate places. [2024-02-02 09:22:17,202 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 75 transitions, 276 flow [2024-02-02 09:22:17,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2024-02-02 09:22:17,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:17,202 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:17,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-02 09:22:17,203 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:22:17,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:17,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1022031659, now seen corresponding path program 1 times [2024-02-02 09:22:17,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:17,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115786949] [2024-02-02 09:22:17,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:17,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:17,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:17,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:17,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115786949] [2024-02-02 09:22:17,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115786949] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:17,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:17,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:22:17,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615651934] [2024-02-02 09:22:17,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:17,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:22:17,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:17,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:22:17,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:22:17,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-02-02 09:22:17,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 276 flow. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2024-02-02 09:22:17,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:17,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-02-02 09:22:17,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:19,844 INFO L124 PetriNetUnfolderBase]: 34282/47381 cut-off events. [2024-02-02 09:22:19,844 INFO L125 PetriNetUnfolderBase]: For 11805/13742 co-relation queries the response was YES. [2024-02-02 09:22:20,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113059 conditions, 47381 events. 34282/47381 cut-off events. For 11805/13742 co-relation queries the response was YES. Maximal size of possible extension queue 3733. Compared 327136 event pairs, 5433 based on Foata normal form. 800/39712 useless extension candidates. Maximal degree in co-relation 105743. Up to 30552 conditions per place. [2024-02-02 09:22:20,273 INFO L140 encePairwiseOnDemand]: 90/97 looper letters, 115 selfloop transitions, 13 changer transitions 1/148 dead transitions. [2024-02-02 09:22:20,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 148 transitions, 719 flow [2024-02-02 09:22:20,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:22:20,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:22:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 320 transitions. [2024-02-02 09:22:20,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6597938144329897 [2024-02-02 09:22:20,275 INFO L175 Difference]: Start difference. First operand has 83 places, 75 transitions, 276 flow. Second operand 5 states and 320 transitions. [2024-02-02 09:22:20,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 148 transitions, 719 flow [2024-02-02 09:22:20,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 148 transitions, 710 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:22:20,279 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 320 flow [2024-02-02 09:22:20,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=320, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-02-02 09:22:20,280 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -14 predicate places. [2024-02-02 09:22:20,280 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 320 flow [2024-02-02 09:22:20,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2024-02-02 09:22:20,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:20,281 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:20,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-02 09:22:20,281 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:22:20,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:20,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1022031660, now seen corresponding path program 1 times [2024-02-02 09:22:20,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:20,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878398060] [2024-02-02 09:22:20,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:20,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:20,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:20,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:20,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878398060] [2024-02-02 09:22:20,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878398060] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:20,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:20,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:22:20,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822481908] [2024-02-02 09:22:20,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:20,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:22:20,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:20,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:22:20,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:22:20,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-02-02 09:22:20,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 320 flow. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2024-02-02 09:22:20,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:20,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-02-02 09:22:20,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:23,363 INFO L124 PetriNetUnfolderBase]: 31457/43462 cut-off events. [2024-02-02 09:22:23,364 INFO L125 PetriNetUnfolderBase]: For 26044/30562 co-relation queries the response was YES. [2024-02-02 09:22:23,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110697 conditions, 43462 events. 31457/43462 cut-off events. For 26044/30562 co-relation queries the response was YES. Maximal size of possible extension queue 3367. Compared 297298 event pairs, 4695 based on Foata normal form. 771/41151 useless extension candidates. Maximal degree in co-relation 103075. Up to 30098 conditions per place. [2024-02-02 09:22:23,662 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 113 selfloop transitions, 13 changer transitions 1/146 dead transitions. [2024-02-02 09:22:23,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 146 transitions, 739 flow [2024-02-02 09:22:23,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:22:23,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:22:23,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 319 transitions. [2024-02-02 09:22:23,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6577319587628866 [2024-02-02 09:22:23,664 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 320 flow. Second operand 5 states and 319 transitions. [2024-02-02 09:22:23,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 146 transitions, 739 flow [2024-02-02 09:22:23,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 146 transitions, 720 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:22:23,708 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 338 flow [2024-02-02 09:22:23,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=338, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2024-02-02 09:22:23,709 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -12 predicate places. [2024-02-02 09:22:23,709 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 338 flow [2024-02-02 09:22:23,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2024-02-02 09:22:23,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:23,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:22:23,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-02 09:22:23,710 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread4Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:22:23,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:23,710 INFO L85 PathProgramCache]: Analyzing trace with hash -2057124256, now seen corresponding path program 1 times [2024-02-02 09:22:23,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:23,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105214977] [2024-02-02 09:22:23,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:23,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:23,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:23,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105214977] [2024-02-02 09:22:23,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105214977] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:23,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:23,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:22:23,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027763934] [2024-02-02 09:22:23,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:23,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:22:23,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:23,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:22:23,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:22:23,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-02-02 09:22:23,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 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) [2024-02-02 09:22:23,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:23,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-02-02 09:22:23,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:27,694 INFO L124 PetriNetUnfolderBase]: 37664/49026 cut-off events. [2024-02-02 09:22:27,694 INFO L125 PetriNetUnfolderBase]: For 46152/50766 co-relation queries the response was YES. [2024-02-02 09:22:27,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135762 conditions, 49026 events. 37664/49026 cut-off events. For 46152/50766 co-relation queries the response was YES. Maximal size of possible extension queue 3034. Compared 292805 event pairs, 9929 based on Foata normal form. 486/47545 useless extension candidates. Maximal degree in co-relation 135727. Up to 45142 conditions per place. [2024-02-02 09:22:27,988 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 81 selfloop transitions, 18 changer transitions 5/124 dead transitions. [2024-02-02 09:22:27,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 124 transitions, 733 flow [2024-02-02 09:22:27,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:22:27,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:22:27,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 246 transitions. [2024-02-02 09:22:27,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.634020618556701 [2024-02-02 09:22:27,990 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 338 flow. Second operand 4 states and 246 transitions. [2024-02-02 09:22:27,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 124 transitions, 733 flow [2024-02-02 09:22:28,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 124 transitions, 691 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:22:28,010 INFO L231 Difference]: Finished difference. Result has 90 places, 87 transitions, 457 flow [2024-02-02 09:22:28,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=457, PETRI_PLACES=90, PETRI_TRANSITIONS=87} [2024-02-02 09:22:28,011 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -11 predicate places. [2024-02-02 09:22:28,011 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 87 transitions, 457 flow [2024-02-02 09:22:28,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 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) [2024-02-02 09:22:28,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:28,012 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] [2024-02-02 09:22:28,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-02 09:22:28,012 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:22:28,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:28,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1788410414, now seen corresponding path program 1 times [2024-02-02 09:22:28,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:28,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235792500] [2024-02-02 09:22:28,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:28,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:28,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:28,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:28,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235792500] [2024-02-02 09:22:28,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235792500] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:28,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:28,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:22:28,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532161332] [2024-02-02 09:22:28,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:28,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:22:28,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:28,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:22:28,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:22:28,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-02-02 09:22:28,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 87 transitions, 457 flow. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2024-02-02 09:22:28,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:28,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-02-02 09:22:28,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:22:32,214 INFO L124 PetriNetUnfolderBase]: 45761/59672 cut-off events. [2024-02-02 09:22:32,214 INFO L125 PetriNetUnfolderBase]: For 50846/55618 co-relation queries the response was YES. [2024-02-02 09:22:32,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165496 conditions, 59672 events. 45761/59672 cut-off events. For 50846/55618 co-relation queries the response was YES. Maximal size of possible extension queue 3793. Compared 361711 event pairs, 7728 based on Foata normal form. 667/58150 useless extension candidates. Maximal degree in co-relation 165459. Up to 39235 conditions per place. [2024-02-02 09:22:32,745 INFO L140 encePairwiseOnDemand]: 90/97 looper letters, 122 selfloop transitions, 24 changer transitions 0/166 dead transitions. [2024-02-02 09:22:32,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 166 transitions, 984 flow [2024-02-02 09:22:32,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:22:32,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:22:32,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 325 transitions. [2024-02-02 09:22:32,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6701030927835051 [2024-02-02 09:22:32,752 INFO L175 Difference]: Start difference. First operand has 90 places, 87 transitions, 457 flow. Second operand 5 states and 325 transitions. [2024-02-02 09:22:32,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 166 transitions, 984 flow [2024-02-02 09:22:32,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 166 transitions, 967 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:22:32,817 INFO L231 Difference]: Finished difference. Result has 96 places, 94 transitions, 568 flow [2024-02-02 09:22:32,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=568, PETRI_PLACES=96, PETRI_TRANSITIONS=94} [2024-02-02 09:22:32,818 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -5 predicate places. [2024-02-02 09:22:32,819 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 94 transitions, 568 flow [2024-02-02 09:22:32,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2024-02-02 09:22:32,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:22:32,820 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] [2024-02-02 09:22:32,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-02-02 09:22:32,820 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:22:32,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:22:32,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1892311638, now seen corresponding path program 1 times [2024-02-02 09:22:32,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:22:32,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190662477] [2024-02-02 09:22:32,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:22:32,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:22:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:22:32,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:22:32,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:22:32,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190662477] [2024-02-02 09:22:32,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190662477] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:22:32,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:22:32,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:22:32,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703991735] [2024-02-02 09:22:32,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:22:32,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:22:32,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:22:32,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:22:32,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:22:33,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-02-02 09:22:33,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 94 transitions, 568 flow. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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) [2024-02-02 09:22:33,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:22:33,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-02-02 09:22:33,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand