./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 3d25acf6 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/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-3d25acf-m [2024-01-30 14:25:35,198 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:25:35,249 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:25:35,252 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:25:35,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:25:35,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:25:35,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:25:35,268 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:25:35,268 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:25:35,268 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:25:35,269 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:25:35,269 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:25:35,269 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:25:35,270 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:25:35,270 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:25:35,270 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:25:35,271 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:25:35,271 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:25:35,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:25:35,271 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:25:35,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:25:35,278 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:25:35,278 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:25:35,278 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:25:35,280 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:25:35,280 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:25:35,281 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:25:35,281 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:25:35,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:25:35,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:25:35,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:25:35,283 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:25:35,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:25:35,283 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:25:35,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:25:35,284 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:25:35,284 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:25:35,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:25:35,284 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:25:35,285 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:25:35,285 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:25:35,285 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:25:35,285 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:25:35,285 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:25:35,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:25:35,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:25:35,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:25:35,536 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:25:35,537 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:25:35,538 INFO L431 ainManager$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 [2024-01-30 14:25:36,613 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:25:36,773 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:25:36,774 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2024-01-30 14:25:36,779 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5706e88a6/83b79a51e1b44cd7863b211c3817c6e2/FLAG1c2006be6 [2024-01-30 14:25:36,789 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5706e88a6/83b79a51e1b44cd7863b211c3817c6e2 [2024-01-30 14:25:36,791 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:25:36,792 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:25:36,792 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-proofs-counter-add-4-semi-Q67.wvr.yml/witness.yml [2024-01-30 14:25:36,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:25:36,915 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:25:36,916 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:25:36,916 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:25:36,919 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:25:36,920 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:25:36" (1/2) ... [2024-01-30 14:25:36,922 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@529c262b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:25:36, skipping insertion in model container [2024-01-30 14:25:36,922 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:25:36" (1/2) ... [2024-01-30 14:25:36,924 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@15eafabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:25:36, skipping insertion in model container [2024-01-30 14:25:36,924 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:25:36" (2/2) ... [2024-01-30 14:25:36,924 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@529c262b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:36, skipping insertion in model container [2024-01-30 14:25:36,924 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:25:36" (2/2) ... [2024-01-30 14:25:36,924 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:25:36,957 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:25:36,958 INFO L98 nessWitnessExtractor]: Location invariant before [L56-L56] (((((0 <= i1) && (0 <= j1)) && (0 <= j2)) && (1 <= i2)) && (counter <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:36,959 INFO L98 nessWitnessExtractor]: Location invariant before [L54-L54] ((((0 <= i1) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:36,959 INFO L98 nessWitnessExtractor]: Location invariant before [L82-L82] (unsigned long )_argptr == 0UL [2024-01-30 14:25:36,959 INFO L98 nessWitnessExtractor]: Location invariant before [L44-L44] (((((-2147483647 <= counter) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && (1 <= i1)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:36,959 INFO L98 nessWitnessExtractor]: Location invariant before [L75-L75] (unsigned long )_argptr == 0UL [2024-01-30 14:25:36,960 INFO L98 nessWitnessExtractor]: Location invariant before [L91-L91] (((((i1 == 0) && (i2 == 0)) && (counter == 0)) && (j1 == 0)) && (j2 == 0)) && (M2 == 0) [2024-01-30 14:25:36,960 INFO L98 nessWitnessExtractor]: Location invariant before [L47-L47] (unsigned long )_argptr == 0UL [2024-01-30 14:25:36,960 INFO L98 nessWitnessExtractor]: Location invariant before [L65-L65] ((((0 <= i1) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:36,960 INFO L98 nessWitnessExtractor]: Location invariant before [L70-L70] (unsigned long )_argptr == 0UL [2024-01-30 14:25:36,960 INFO L98 nessWitnessExtractor]: Location invariant before [L76-L76] ((((0 <= i1) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:36,960 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] (unsigned long )_argptr == 0UL [2024-01-30 14:25:36,961 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] (((((((i1 == 0) && (i2 == 0)) && (N2 == 0)) && (counter == 0)) && (j1 == 0)) && (j2 == 0)) && (M1 == 0)) && (M2 == 0) [2024-01-30 14:25:36,961 INFO L98 nessWitnessExtractor]: Location invariant before [L88-L88] ((((((((i1 == 0) && (i2 == 0)) && (N1 == 0)) && (N2 == 0)) && (counter == 0)) && (j1 == 0)) && (j2 == 0)) && (M1 == 0)) && (M2 == 0) [2024-01-30 14:25:36,961 INFO L98 nessWitnessExtractor]: Location invariant before [L77-L77] ((((0 <= i1) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:36,961 INFO L98 nessWitnessExtractor]: Loop invariant at [L40-L45] (unsigned long )_argptr == 0UL [2024-01-30 14:25:36,961 INFO L98 nessWitnessExtractor]: Location invariant before [L52-L52] (unsigned long )_argptr == 0UL [2024-01-30 14:25:36,961 INFO L98 nessWitnessExtractor]: Location invariant before [L66-L66] (((((-2147483647 <= counter) && (0 <= i1)) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:36,961 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] ((((i1 == 0) && (i2 == 0)) && (counter == 0)) && (j1 == 0)) && (j2 == 0) [2024-01-30 14:25:36,961 INFO L98 nessWitnessExtractor]: Location invariant before [L67-L67] (((((-2147483647 <= counter) && (0 <= i1)) && (0 <= i2)) && (0 <= j2)) && (1 <= j1)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:36,962 INFO L98 nessWitnessExtractor]: Location invariant before [L95-L95] ((((i1 == 0) && (i2 == 0)) && (counter == 0)) && (j1 == 0)) && (j2 == 0) [2024-01-30 14:25:36,962 INFO L98 nessWitnessExtractor]: Location invariant before [L41-L41] (unsigned long )_argptr == 0UL [2024-01-30 14:25:36,962 INFO L98 nessWitnessExtractor]: Location invariant before [L79-L79] (((((0 <= i1) && (0 <= i2)) && (0 <= j1)) && (1 <= j2)) && (counter <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:36,962 INFO L98 nessWitnessExtractor]: Location invariant before [L22-L25] (((((i1 == 0) && (i2 == 0)) && (counter == 0)) && (j1 == 0)) && (j2 == 0)) && (M2 == 0) [2024-01-30 14:25:36,962 INFO L98 nessWitnessExtractor]: Loop invariant at [L51-L57] (unsigned long )_argptr == 0UL [2024-01-30 14:25:36,963 INFO L98 nessWitnessExtractor]: Location invariant before [L78-L78] (((((0 <= i1) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && (counter <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:36,963 INFO L98 nessWitnessExtractor]: Location invariant before [L64-L64] (unsigned long )_argptr == 0UL [2024-01-30 14:25:36,963 INFO L98 nessWitnessExtractor]: Location invariant before [L42-L42] ((((0 <= i1) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:36,963 INFO L98 nessWitnessExtractor]: Loop invariant at [L74-L80] (unsigned long )_argptr == 0UL [2024-01-30 14:25:36,963 INFO L98 nessWitnessExtractor]: Loop invariant at [L63-L68] (unsigned long )_argptr == 0UL [2024-01-30 14:25:36,963 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L43] (((((-2147483647 <= counter) && (0 <= i1)) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:36,963 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] ((((((i1 == 0) && (i2 == 0)) && (counter == 0)) && (j1 == 0)) && (j2 == 0)) && (M1 == 0)) && (M2 == 0) [2024-01-30 14:25:36,964 INFO L98 nessWitnessExtractor]: Location invariant before [L53-L53] ((((0 <= i1) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:36,964 INFO L98 nessWitnessExtractor]: Location invariant before [L55-L55] (((((0 <= i1) && (0 <= i2)) && (0 <= j1)) && (0 <= j2)) && (counter <= 2147483646)) && ((unsigned long )_argptr == 0UL) [2024-01-30 14:25:36,993 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:25:37,146 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] [2024-01-30 14:25:37,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:25:37,156 INFO L202 MainTranslator]: Completed pre-run [2024-01-30 14:25:37,169 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 [2024-01-30 14:25:37,264 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] [2024-01-30 14:25:37,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:25:37,278 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:25:37,280 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:37 WrapperNode [2024-01-30 14:25:37,280 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:25:37,281 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:25:37,281 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:25:37,281 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:25:37,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:37" (1/1) ... [2024-01-30 14:25:37,304 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:37" (1/1) ... [2024-01-30 14:25:37,324 INFO L138 Inliner]: procedures = 22, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 160 [2024-01-30 14:25:37,326 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:25:37,327 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:25:37,327 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:25:37,327 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:25:37,336 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:37" (1/1) ... [2024-01-30 14:25:37,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:37" (1/1) ... [2024-01-30 14:25:37,341 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:37" (1/1) ... [2024-01-30 14:25:37,353 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-30 14:25:37,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:37" (1/1) ... [2024-01-30 14:25:37,353 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:37" (1/1) ... [2024-01-30 14:25:37,360 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:37" (1/1) ... [2024-01-30 14:25:37,364 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:37" (1/1) ... [2024-01-30 14:25:37,366 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:37" (1/1) ... [2024-01-30 14:25:37,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:37" (1/1) ... [2024-01-30 14:25:37,369 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:25:37,384 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:25:37,385 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:25:37,385 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:25:37,385 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:37" (1/1) ... [2024-01-30 14:25:37,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:25:37,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:25:37,415 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-30 14:25:37,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-30 14:25:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:25:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-30 14:25:37,447 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-30 14:25:37,448 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-30 14:25:37,451 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-30 14:25:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-30 14:25:37,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-30 14:25:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-30 14:25:37,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-30 14:25:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:25:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:25:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:25:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-30 14:25:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-30 14:25:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:25:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:25:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:25:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:25:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-30 14:25:37,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-30 14:25:37,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-30 14:25:37,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-30 14:25:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:25:37,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:25:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:25:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:25:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:25:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-30 14:25:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-30 14:25:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:25:37,458 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-30 14:25:37,582 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:25:37,585 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:25:37,956 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:25:37,957 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:25:38,121 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:25:38,122 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-30 14:25:38,123 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:25:38 BoogieIcfgContainer [2024-01-30 14:25:38,124 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:25:38,126 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:25:38,126 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:25:38,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:25:38,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:25:36" (1/4) ... [2024-01-30 14:25:38,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79fb5199 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:25:38, skipping insertion in model container [2024-01-30 14:25:38,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:25:36" (2/4) ... [2024-01-30 14:25:38,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79fb5199 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:25:38, skipping insertion in model container [2024-01-30 14:25:38,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:25:37" (3/4) ... [2024-01-30 14:25:38,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79fb5199 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:25:38, skipping insertion in model container [2024-01-30 14:25:38,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:25:38" (4/4) ... [2024-01-30 14:25:38,133 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2024-01-30 14:25:38,145 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:25:38,146 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2024-01-30 14:25:38,146 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:25:38,210 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-30 14:25:38,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 97 transitions, 222 flow [2024-01-30 14:25:38,290 INFO L124 PetriNetUnfolderBase]: 4/93 cut-off events. [2024-01-30 14:25:38,290 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-30 14:25:38,294 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. [2024-01-30 14:25:38,294 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 97 transitions, 222 flow [2024-01-30 14:25:38,298 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 92 transitions, 208 flow [2024-01-30 14:25:38,304 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:25:38,309 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;@4ea73c00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:25:38,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2024-01-30 14:25:38,311 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:25:38,311 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:25:38,311 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:25:38,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:25:38,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:25:38,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:25:38,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:25:38,315 INFO L85 PathProgramCache]: Analyzing trace with hash 17368, now seen corresponding path program 1 times [2024-01-30 14:25:38,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:25:38,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596541080] [2024-01-30 14:25:38,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:25:38,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:25:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:25:38,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:25:38,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:25:38,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596541080] [2024-01-30 14:25:38,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596541080] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:25:38,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:25:38,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:25:38,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231172999] [2024-01-30 14:25:38,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:25:38,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:25:38,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:25:38,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:25:38,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:25:38,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 97 [2024-01-30 14:25:38,690 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) [2024-01-30 14:25:38,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:25:38,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 97 [2024-01-30 14:25:38,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:25:41,031 INFO L124 PetriNetUnfolderBase]: 18247/26725 cut-off events. [2024-01-30 14:25:41,032 INFO L125 PetriNetUnfolderBase]: For 687/687 co-relation queries the response was YES. [2024-01-30 14:25:41,121 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. [2024-01-30 14:25:41,277 INFO L140 encePairwiseOnDemand]: 88/97 looper letters, 50 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-01-30 14:25:41,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 85 transitions, 298 flow [2024-01-30 14:25:41,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:25:41,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:25:41,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 170 transitions. [2024-01-30 14:25:41,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.584192439862543 [2024-01-30 14:25:41,288 INFO L175 Difference]: Start difference. First operand has 101 places, 92 transitions, 208 flow. Second operand 3 states and 170 transitions. [2024-01-30 14:25:41,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 85 transitions, 298 flow [2024-01-30 14:25:41,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 85 transitions, 282 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-30 14:25:41,321 INFO L231 Difference]: Finished difference. Result has 88 places, 85 transitions, 182 flow [2024-01-30 14:25:41,323 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} [2024-01-30 14:25:41,325 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -13 predicate places. [2024-01-30 14:25:41,326 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 182 flow [2024-01-30 14:25:41,326 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) [2024-01-30 14:25:41,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:25:41,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-30 14:25:41,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:25:41,327 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:25:41,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:25:41,327 INFO L85 PathProgramCache]: Analyzing trace with hash 538905, now seen corresponding path program 1 times [2024-01-30 14:25:41,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:25:41,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025478245] [2024-01-30 14:25:41,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:25:41,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:25:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:25:41,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:25:41,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:25:41,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025478245] [2024-01-30 14:25:41,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025478245] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:25:41,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:25:41,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:25:41,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505785371] [2024-01-30 14:25:41,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:25:41,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:25:41,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:25:41,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:25:41,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:25:41,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-01-30 14:25:41,449 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) [2024-01-30 14:25:41,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:25:41,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-01-30 14:25:41,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:25:43,066 INFO L124 PetriNetUnfolderBase]: 15803/23180 cut-off events. [2024-01-30 14:25:43,066 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-01-30 14:25:43,102 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. [2024-01-30 14:25:43,196 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 48 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2024-01-30 14:25:43,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 280 flow [2024-01-30 14:25:43,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:25:43,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:25:43,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2024-01-30 14:25:43,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5773195876288659 [2024-01-30 14:25:43,201 INFO L175 Difference]: Start difference. First operand has 88 places, 85 transitions, 182 flow. Second operand 3 states and 168 transitions. [2024-01-30 14:25:43,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 280 flow [2024-01-30 14:25:43,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 84 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:25:43,204 INFO L231 Difference]: Finished difference. Result has 87 places, 84 transitions, 180 flow [2024-01-30 14:25:43,204 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} [2024-01-30 14:25:43,205 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -14 predicate places. [2024-01-30 14:25:43,205 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 84 transitions, 180 flow [2024-01-30 14:25:43,205 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) [2024-01-30 14:25:43,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:25:43,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-30 14:25:43,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:25:43,206 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:25:43,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:25:43,208 INFO L85 PathProgramCache]: Analyzing trace with hash 16706626, now seen corresponding path program 1 times [2024-01-30 14:25:43,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:25:43,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519567970] [2024-01-30 14:25:43,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:25:43,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:25:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:25:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:25:43,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:25:43,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519567970] [2024-01-30 14:25:43,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519567970] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:25:43,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:25:43,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:25:43,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83623471] [2024-01-30 14:25:43,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:25:43,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:25:43,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:25:43,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:25:43,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:25:43,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 97 [2024-01-30 14:25:43,309 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) [2024-01-30 14:25:43,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:25:43,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 97 [2024-01-30 14:25:43,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:25:44,433 INFO L124 PetriNetUnfolderBase]: 13456/19768 cut-off events. [2024-01-30 14:25:44,434 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-01-30 14:25:44,468 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. [2024-01-30 14:25:44,554 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 46 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-01-30 14:25:44,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 83 transitions, 274 flow [2024-01-30 14:25:44,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:25:44,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:25:44,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2024-01-30 14:25:44,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5910652920962199 [2024-01-30 14:25:44,556 INFO L175 Difference]: Start difference. First operand has 87 places, 84 transitions, 180 flow. Second operand 3 states and 172 transitions. [2024-01-30 14:25:44,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 83 transitions, 274 flow [2024-01-30 14:25:44,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:25:44,559 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 178 flow [2024-01-30 14:25:44,559 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} [2024-01-30 14:25:44,560 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -15 predicate places. [2024-01-30 14:25:44,560 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 178 flow [2024-01-30 14:25:44,561 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) [2024-01-30 14:25:44,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:25:44,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-30 14:25:44,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:25:44,561 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:25:44,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:25:44,562 INFO L85 PathProgramCache]: Analyzing trace with hash 517905937, now seen corresponding path program 1 times [2024-01-30 14:25:44,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:25:44,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54504779] [2024-01-30 14:25:44,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:25:44,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:25:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:25:44,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:25:44,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:25:44,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54504779] [2024-01-30 14:25:44,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54504779] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:25:44,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:25:44,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:25:44,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053597281] [2024-01-30 14:25:44,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:25:44,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:25:44,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:25:44,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:25:44,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:25:44,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 97 [2024-01-30 14:25:44,631 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) [2024-01-30 14:25:44,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:25:44,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 97 [2024-01-30 14:25:44,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:25:45,445 INFO L124 PetriNetUnfolderBase]: 11458/16910 cut-off events. [2024-01-30 14:25:45,445 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-01-30 14:25:45,477 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. [2024-01-30 14:25:45,560 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 44 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2024-01-30 14:25:45,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 82 transitions, 268 flow [2024-01-30 14:25:45,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:25:45,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:25:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-01-30 14:25:45,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6048109965635738 [2024-01-30 14:25:45,562 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 178 flow. Second operand 3 states and 176 transitions. [2024-01-30 14:25:45,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 82 transitions, 268 flow [2024-01-30 14:25:45,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 82 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:25:45,563 INFO L231 Difference]: Finished difference. Result has 85 places, 82 transitions, 176 flow [2024-01-30 14:25:45,563 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} [2024-01-30 14:25:45,564 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -16 predicate places. [2024-01-30 14:25:45,564 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 82 transitions, 176 flow [2024-01-30 14:25:45,564 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) [2024-01-30 14:25:45,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:25:45,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-30 14:25:45,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-30 14:25:45,565 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:25:45,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:25:45,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1124784578, now seen corresponding path program 1 times [2024-01-30 14:25:45,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:25:45,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443750253] [2024-01-30 14:25:45,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:25:45,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:25:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:25:45,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:25:45,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:25:45,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443750253] [2024-01-30 14:25:45,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443750253] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:25:45,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:25:45,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:25:45,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568206970] [2024-01-30 14:25:45,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:25:45,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:25:45,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:25:45,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:25:45,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:25:45,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 97 [2024-01-30 14:25:45,644 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) [2024-01-30 14:25:45,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:25:45,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 97 [2024-01-30 14:25:45,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:25:47,534 INFO L124 PetriNetUnfolderBase]: 20003/30016 cut-off events. [2024-01-30 14:25:47,534 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-01-30 14:25:47,587 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. [2024-01-30 14:25:47,751 INFO L140 encePairwiseOnDemand]: 85/97 looper letters, 67 selfloop transitions, 3 changer transitions 1/108 dead transitions. [2024-01-30 14:25:47,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 108 transitions, 377 flow [2024-01-30 14:25:47,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:25:47,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:25:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2024-01-30 14:25:47,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.738831615120275 [2024-01-30 14:25:47,753 INFO L175 Difference]: Start difference. First operand has 85 places, 82 transitions, 176 flow. Second operand 3 states and 215 transitions. [2024-01-30 14:25:47,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 108 transitions, 377 flow [2024-01-30 14:25:47,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 108 transitions, 373 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:25:47,755 INFO L231 Difference]: Finished difference. Result has 84 places, 82 transitions, 199 flow [2024-01-30 14:25:47,755 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} [2024-01-30 14:25:47,756 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -17 predicate places. [2024-01-30 14:25:47,756 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 82 transitions, 199 flow [2024-01-30 14:25:47,756 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) [2024-01-30 14:25:47,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:25:47,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:25:47,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-30 14:25:47,757 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:25:47,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:25:47,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1448340995, now seen corresponding path program 1 times [2024-01-30 14:25:47,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:25:47,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845358984] [2024-01-30 14:25:47,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:25:47,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:25:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:25:47,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:25:47,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:25:47,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845358984] [2024-01-30 14:25:47,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845358984] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:25:47,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:25:47,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:25:47,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324529542] [2024-01-30 14:25:47,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:25:47,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:25:47,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:25:47,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:25:47,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:25:47,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 97 [2024-01-30 14:25:47,858 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) [2024-01-30 14:25:47,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:25:47,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 97 [2024-01-30 14:25:47,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:25:49,915 INFO L124 PetriNetUnfolderBase]: 22093/31449 cut-off events. [2024-01-30 14:25:49,915 INFO L125 PetriNetUnfolderBase]: For 3624/3624 co-relation queries the response was YES. [2024-01-30 14:25:49,957 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. [2024-01-30 14:25:50,091 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 67 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2024-01-30 14:25:50,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 101 transitions, 393 flow [2024-01-30 14:25:50,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:25:50,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:25:50,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 238 transitions. [2024-01-30 14:25:50,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6134020618556701 [2024-01-30 14:25:50,092 INFO L175 Difference]: Start difference. First operand has 84 places, 82 transitions, 199 flow. Second operand 4 states and 238 transitions. [2024-01-30 14:25:50,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 101 transitions, 393 flow [2024-01-30 14:25:50,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 101 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:25:50,094 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 192 flow [2024-01-30 14:25:50,094 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} [2024-01-30 14:25:50,095 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -19 predicate places. [2024-01-30 14:25:50,095 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 192 flow [2024-01-30 14:25:50,095 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) [2024-01-30 14:25:50,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:25:50,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:25:50,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-30 14:25:50,096 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:25:50,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:25:50,096 INFO L85 PathProgramCache]: Analyzing trace with hash 283599647, now seen corresponding path program 1 times [2024-01-30 14:25:50,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:25:50,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059848172] [2024-01-30 14:25:50,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:25:50,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:25:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:25:50,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:25:50,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:25:50,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059848172] [2024-01-30 14:25:50,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059848172] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:25:50,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:25:50,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:25:50,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948385424] [2024-01-30 14:25:50,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:25:50,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:25:50,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:25:50,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:25:50,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:25:50,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 97 [2024-01-30 14:25:50,198 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) [2024-01-30 14:25:50,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:25:50,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 97 [2024-01-30 14:25:50,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:25:51,720 INFO L124 PetriNetUnfolderBase]: 21815/31438 cut-off events. [2024-01-30 14:25:51,720 INFO L125 PetriNetUnfolderBase]: For 3519/3519 co-relation queries the response was YES. [2024-01-30 14:25:51,767 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. [2024-01-30 14:25:51,897 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 74 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2024-01-30 14:25:51,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 104 transitions, 421 flow [2024-01-30 14:25:51,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:25:51,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:25:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 243 transitions. [2024-01-30 14:25:51,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6262886597938144 [2024-01-30 14:25:51,902 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 192 flow. Second operand 4 states and 243 transitions. [2024-01-30 14:25:51,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 104 transitions, 421 flow [2024-01-30 14:25:51,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 104 transitions, 418 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:25:51,904 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 185 flow [2024-01-30 14:25:51,905 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} [2024-01-30 14:25:51,905 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -22 predicate places. [2024-01-30 14:25:51,909 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 185 flow [2024-01-30 14:25:51,909 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) [2024-01-30 14:25:51,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:25:51,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:25:51,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-30 14:25:51,910 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:25:51,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:25:51,910 INFO L85 PathProgramCache]: Analyzing trace with hash 285713392, now seen corresponding path program 1 times [2024-01-30 14:25:51,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:25:51,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055628629] [2024-01-30 14:25:51,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:25:51,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:25:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:25:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:25:52,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:25:52,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055628629] [2024-01-30 14:25:52,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055628629] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:25:52,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:25:52,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:25:52,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515845727] [2024-01-30 14:25:52,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:25:52,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:25:52,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:25:52,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:25:52,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:25:52,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-01-30 14:25:52,038 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) [2024-01-30 14:25:52,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:25:52,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-01-30 14:25:52,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:25:54,143 INFO L124 PetriNetUnfolderBase]: 26509/38916 cut-off events. [2024-01-30 14:25:54,144 INFO L125 PetriNetUnfolderBase]: For 3115/3609 co-relation queries the response was YES. [2024-01-30 14:25:54,182 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. [2024-01-30 14:25:54,319 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 88 selfloop transitions, 5 changer transitions 1/119 dead transitions. [2024-01-30 14:25:54,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 119 transitions, 480 flow [2024-01-30 14:25:54,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:25:54,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:25:54,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-01-30 14:25:54,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6469072164948454 [2024-01-30 14:25:54,321 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 185 flow. Second operand 4 states and 251 transitions. [2024-01-30 14:25:54,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 119 transitions, 480 flow [2024-01-30 14:25:54,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 119 transitions, 473 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:25:54,323 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 208 flow [2024-01-30 14:25:54,323 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} [2024-01-30 14:25:54,323 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -19 predicate places. [2024-01-30 14:25:54,324 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 208 flow [2024-01-30 14:25:54,326 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) [2024-01-30 14:25:54,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:25:54,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:25:54,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-30 14:25:54,326 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:25:54,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:25:54,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1954182523, now seen corresponding path program 1 times [2024-01-30 14:25:54,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:25:54,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581219483] [2024-01-30 14:25:54,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:25:54,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:25:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:25:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:25:54,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:25:54,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581219483] [2024-01-30 14:25:54,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581219483] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:25:54,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:25:54,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:25:54,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906476306] [2024-01-30 14:25:54,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:25:54,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:25:54,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:25:54,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:25:54,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:25:54,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 97 [2024-01-30 14:25:54,426 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) [2024-01-30 14:25:54,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:25:54,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 97 [2024-01-30 14:25:54,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:25:56,276 INFO L124 PetriNetUnfolderBase]: 21835/32365 cut-off events. [2024-01-30 14:25:56,276 INFO L125 PetriNetUnfolderBase]: For 5123/5478 co-relation queries the response was YES. [2024-01-30 14:25:56,332 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. [2024-01-30 14:25:56,462 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 79 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2024-01-30 14:25:56,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 106 transitions, 467 flow [2024-01-30 14:25:56,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:25:56,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:25:56,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2024-01-30 14:25:56,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6391752577319587 [2024-01-30 14:25:56,464 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 208 flow. Second operand 4 states and 248 transitions. [2024-01-30 14:25:56,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 106 transitions, 467 flow [2024-01-30 14:25:56,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 106 transitions, 455 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:25:56,467 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 196 flow [2024-01-30 14:25:56,467 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} [2024-01-30 14:25:56,468 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -22 predicate places. [2024-01-30 14:25:56,468 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 196 flow [2024-01-30 14:25:56,468 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) [2024-01-30 14:25:56,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:25:56,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:25:56,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-30 14:25:56,469 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:25:56,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:25:56,469 INFO L85 PathProgramCache]: Analyzing trace with hash 517014403, now seen corresponding path program 1 times [2024-01-30 14:25:56,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:25:56,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776950388] [2024-01-30 14:25:56,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:25:56,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:25:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:25:56,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:25:56,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:25:56,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776950388] [2024-01-30 14:25:56,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776950388] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:25:56,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:25:56,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:25:56,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578572914] [2024-01-30 14:25:56,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:25:56,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:25:56,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:25:56,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:25:56,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:25:56,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-01-30 14:25:56,588 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) [2024-01-30 14:25:56,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:25:56,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-01-30 14:25:56,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:25:58,901 INFO L124 PetriNetUnfolderBase]: 27413/38156 cut-off events. [2024-01-30 14:25:58,901 INFO L125 PetriNetUnfolderBase]: For 5276/7262 co-relation queries the response was YES. [2024-01-30 14:25:58,977 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. [2024-01-30 14:25:59,126 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 86 selfloop transitions, 8 changer transitions 1/117 dead transitions. [2024-01-30 14:25:59,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 117 transitions, 500 flow [2024-01-30 14:25:59,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:25:59,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:25:59,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 250 transitions. [2024-01-30 14:25:59,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6443298969072165 [2024-01-30 14:25:59,128 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 196 flow. Second operand 4 states and 250 transitions. [2024-01-30 14:25:59,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 117 transitions, 500 flow [2024-01-30 14:25:59,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 117 transitions, 493 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:25:59,130 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 239 flow [2024-01-30 14:25:59,130 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} [2024-01-30 14:25:59,131 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -19 predicate places. [2024-01-30 14:25:59,131 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 239 flow [2024-01-30 14:25:59,131 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) [2024-01-30 14:25:59,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:25:59,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:25:59,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-30 14:25:59,131 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:25:59,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:25:59,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1067797825, now seen corresponding path program 1 times [2024-01-30 14:25:59,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:25:59,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786773557] [2024-01-30 14:25:59,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:25:59,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:25:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:25:59,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:25:59,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:25:59,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786773557] [2024-01-30 14:25:59,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786773557] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:25:59,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:25:59,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:25:59,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008952409] [2024-01-30 14:25:59,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:25:59,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:25:59,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:25:59,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:25:59,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:25:59,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 97 [2024-01-30 14:25:59,209 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) [2024-01-30 14:25:59,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:25:59,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 97 [2024-01-30 14:25:59,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:00,842 INFO L124 PetriNetUnfolderBase]: 20691/29046 cut-off events. [2024-01-30 14:26:00,843 INFO L125 PetriNetUnfolderBase]: For 6783/7470 co-relation queries the response was YES. [2024-01-30 14:26:00,929 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. [2024-01-30 14:26:01,057 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 97 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2024-01-30 14:26:01,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 121 transitions, 634 flow [2024-01-30 14:26:01,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:26:01,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:26:01,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2024-01-30 14:26:01,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6520618556701031 [2024-01-30 14:26:01,058 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 239 flow. Second operand 4 states and 253 transitions. [2024-01-30 14:26:01,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 121 transitions, 634 flow [2024-01-30 14:26:01,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 121 transitions, 615 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:26:01,061 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 228 flow [2024-01-30 14:26:01,062 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} [2024-01-30 14:26:01,062 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -21 predicate places. [2024-01-30 14:26:01,062 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 228 flow [2024-01-30 14:26:01,063 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) [2024-01-30 14:26:01,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:01,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:26:01,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-30 14:26:01,063 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:26:01,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:01,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1229536841, now seen corresponding path program 1 times [2024-01-30 14:26:01,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:01,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339081797] [2024-01-30 14:26:01,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:01,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:01,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:01,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339081797] [2024-01-30 14:26:01,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339081797] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:01,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:01,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:26:01,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481734953] [2024-01-30 14:26:01,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:01,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:26:01,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:01,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:26:01,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:26:01,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-01-30 14:26:01,170 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) [2024-01-30 14:26:01,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:01,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-01-30 14:26:01,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:03,496 INFO L124 PetriNetUnfolderBase]: 27345/36930 cut-off events. [2024-01-30 14:26:03,496 INFO L125 PetriNetUnfolderBase]: For 7612/8349 co-relation queries the response was YES. [2024-01-30 14:26:03,632 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. [2024-01-30 14:26:03,794 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 84 selfloop transitions, 10 changer transitions 1/114 dead transitions. [2024-01-30 14:26:03,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 114 transitions, 527 flow [2024-01-30 14:26:03,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:26:03,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:26:03,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 247 transitions. [2024-01-30 14:26:03,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6365979381443299 [2024-01-30 14:26:03,795 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 228 flow. Second operand 4 states and 247 transitions. [2024-01-30 14:26:03,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 114 transitions, 527 flow [2024-01-30 14:26:03,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 114 transitions, 520 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:26:03,799 INFO L231 Difference]: Finished difference. Result has 83 places, 75 transitions, 276 flow [2024-01-30 14:26:03,800 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} [2024-01-30 14:26:03,800 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -18 predicate places. [2024-01-30 14:26:03,800 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 75 transitions, 276 flow [2024-01-30 14:26:03,800 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) [2024-01-30 14:26:03,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:03,801 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:26:03,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-30 14:26:03,801 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:26:03,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:03,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1022031659, now seen corresponding path program 1 times [2024-01-30 14:26:03,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:03,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072234992] [2024-01-30 14:26:03,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:03,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:03,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:03,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:03,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072234992] [2024-01-30 14:26:03,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072234992] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:03,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:03,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:26:03,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871704623] [2024-01-30 14:26:03,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:03,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:26:03,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:03,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:26:03,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:26:03,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-01-30 14:26:03,948 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) [2024-01-30 14:26:03,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:03,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-01-30 14:26:03,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:06,559 INFO L124 PetriNetUnfolderBase]: 34282/47381 cut-off events. [2024-01-30 14:26:06,559 INFO L125 PetriNetUnfolderBase]: For 11805/13742 co-relation queries the response was YES. [2024-01-30 14:26:06,699 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. [2024-01-30 14:26:06,897 INFO L140 encePairwiseOnDemand]: 90/97 looper letters, 115 selfloop transitions, 13 changer transitions 1/148 dead transitions. [2024-01-30 14:26:06,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 148 transitions, 719 flow [2024-01-30 14:26:06,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:26:06,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:26:06,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 320 transitions. [2024-01-30 14:26:06,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6597938144329897 [2024-01-30 14:26:06,898 INFO L175 Difference]: Start difference. First operand has 83 places, 75 transitions, 276 flow. Second operand 5 states and 320 transitions. [2024-01-30 14:26:06,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 148 transitions, 719 flow [2024-01-30 14:26:06,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 148 transitions, 710 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:26:06,902 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 320 flow [2024-01-30 14:26:06,902 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} [2024-01-30 14:26:06,903 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -14 predicate places. [2024-01-30 14:26:06,903 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 320 flow [2024-01-30 14:26:06,903 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) [2024-01-30 14:26:06,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:06,903 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:26:06,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-30 14:26:06,903 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:26:06,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:06,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1022031660, now seen corresponding path program 1 times [2024-01-30 14:26:06,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:06,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426325554] [2024-01-30 14:26:06,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:06,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:07,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:07,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:07,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426325554] [2024-01-30 14:26:07,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426325554] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:07,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:07,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:26:07,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050650333] [2024-01-30 14:26:07,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:07,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:26:07,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:07,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:26:07,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:26:07,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-01-30 14:26:07,055 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) [2024-01-30 14:26:07,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:07,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-01-30 14:26:07,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:09,489 INFO L124 PetriNetUnfolderBase]: 31457/43462 cut-off events. [2024-01-30 14:26:09,490 INFO L125 PetriNetUnfolderBase]: For 26044/30562 co-relation queries the response was YES. [2024-01-30 14:26:09,654 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. [2024-01-30 14:26:09,855 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 113 selfloop transitions, 13 changer transitions 1/146 dead transitions. [2024-01-30 14:26:09,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 146 transitions, 739 flow [2024-01-30 14:26:09,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:26:09,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:26:09,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 319 transitions. [2024-01-30 14:26:09,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6577319587628866 [2024-01-30 14:26:09,856 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 320 flow. Second operand 5 states and 319 transitions. [2024-01-30 14:26:09,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 146 transitions, 739 flow [2024-01-30 14:26:09,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 146 transitions, 720 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:26:09,920 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 338 flow [2024-01-30 14:26:09,920 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} [2024-01-30 14:26:09,920 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -12 predicate places. [2024-01-30 14:26:09,920 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 338 flow [2024-01-30 14:26:09,921 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) [2024-01-30 14:26:09,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:09,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:26:09,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-30 14:26:09,921 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread4Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:26:09,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:09,921 INFO L85 PathProgramCache]: Analyzing trace with hash -2057124256, now seen corresponding path program 1 times [2024-01-30 14:26:09,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:09,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478088292] [2024-01-30 14:26:09,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:09,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:10,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:10,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478088292] [2024-01-30 14:26:10,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478088292] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:10,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:10,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-30 14:26:10,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137741243] [2024-01-30 14:26:10,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:10,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:26:10,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:10,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:26:10,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:26:10,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-01-30 14:26:10,050 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) [2024-01-30 14:26:10,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:10,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-01-30 14:26:10,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:26:14,229 INFO L124 PetriNetUnfolderBase]: 37664/49026 cut-off events. [2024-01-30 14:26:14,229 INFO L125 PetriNetUnfolderBase]: For 46152/50766 co-relation queries the response was YES. [2024-01-30 14:26:14,454 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. [2024-01-30 14:26:14,632 INFO L140 encePairwiseOnDemand]: 92/97 looper letters, 81 selfloop transitions, 18 changer transitions 5/124 dead transitions. [2024-01-30 14:26:14,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 124 transitions, 733 flow [2024-01-30 14:26:14,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:26:14,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:26:14,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 246 transitions. [2024-01-30 14:26:14,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.634020618556701 [2024-01-30 14:26:14,633 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 338 flow. Second operand 4 states and 246 transitions. [2024-01-30 14:26:14,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 124 transitions, 733 flow [2024-01-30 14:26:14,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 124 transitions, 691 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-30 14:26:14,646 INFO L231 Difference]: Finished difference. Result has 90 places, 87 transitions, 457 flow [2024-01-30 14:26:14,646 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} [2024-01-30 14:26:14,647 INFO L281 CegarLoopForPetriNet]: 101 programPoint places, -11 predicate places. [2024-01-30 14:26:14,647 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 87 transitions, 457 flow [2024-01-30 14:26:14,647 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) [2024-01-30 14:26:14,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:26:14,647 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] [2024-01-30 14:26:14,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-30 14:26:14,647 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:26:14,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:26:14,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1788410414, now seen corresponding path program 1 times [2024-01-30 14:26:14,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:26:14,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072728553] [2024-01-30 14:26:14,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:26:14,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:26:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:26:14,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:26:14,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:26:14,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072728553] [2024-01-30 14:26:14,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072728553] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:26:14,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:26:14,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:26:14,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54270937] [2024-01-30 14:26:14,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:26:14,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:26:14,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:26:14,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:26:14,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:26:14,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-01-30 14:26:14,778 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) [2024-01-30 14:26:14,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:26:14,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-01-30 14:26:14,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand