./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/security.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/security.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f 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/security.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/security.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-a340643-m [2024-01-27 14:52:46,565 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 14:52:46,626 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 14:52:46,631 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 14:52:46,631 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 14:52:46,654 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 14:52:46,655 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 14:52:46,655 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 14:52:46,656 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 14:52:46,659 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 14:52:46,659 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 14:52:46,659 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 14:52:46,660 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 14:52:46,661 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 14:52:46,661 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 14:52:46,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 14:52:46,661 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 14:52:46,661 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 14:52:46,662 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 14:52:46,662 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 14:52:46,662 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 14:52:46,662 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 14:52:46,663 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 14:52:46,663 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 14:52:46,663 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 14:52:46,663 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 14:52:46,663 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 14:52:46,663 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 14:52:46,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 14:52:46,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 14:52:46,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 14:52:46,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 14:52:46,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:52:46,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 14:52:46,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 14:52:46,666 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 14:52:46,666 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 14:52:46,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 14:52:46,667 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 14:52:46,667 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 14:52:46,667 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 14:52:46,667 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 14:52:46,668 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 14:52:46,668 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-27 14:52:46,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 14:52:46,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 14:52:46,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 14:52:46,897 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 14:52:46,897 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 14:52:46,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/security.wvr.c [2024-01-27 14:52:47,822 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 14:52:47,998 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 14:52:47,999 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/security.wvr.c [2024-01-27 14:52:48,009 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6c7a8e99/e7e9a25c2932474bb264dce0804db80a/FLAG692f6afb4 [2024-01-27 14:52:48,024 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6c7a8e99/e7e9a25c2932474bb264dce0804db80a [2024-01-27 14:52:48,026 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-27 14:52:48,026 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-27 14:52:48,028 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/security.wvr.yml/witness.yml [2024-01-27 14:52:48,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 14:52:48,099 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-27 14:52:48,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 14:52:48,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 14:52:48,103 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 14:52:48,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:52:48" (1/2) ... [2024-01-27 14:52:48,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bf47df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:52:48, skipping insertion in model container [2024-01-27 14:52:48,105 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:52:48" (1/2) ... [2024-01-27 14:52:48,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5ecaa67b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:52:48, skipping insertion in model container [2024-01-27 14:52:48,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:52:48" (2/2) ... [2024-01-27 14:52:48,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bf47df and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:48, skipping insertion in model container [2024-01-27 14:52:48,106 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:52:48" (2/2) ... [2024-01-27 14:52:48,106 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-27 14:52:48,128 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-27 14:52:48,133 INFO L98 nessWitnessExtractor]: Location invariant before [L60-L60] (unsigned long )_argptr == 0UL [2024-01-27 14:52:48,133 INFO L98 nessWitnessExtractor]: Location invariant before [L54-L54] (unsigned long )_argptr == 0UL [2024-01-27 14:52:48,133 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L19] val == (_Bool)0 || val == (_Bool)1 [2024-01-27 14:52:48,133 INFO L98 nessWitnessExtractor]: Location invariant before [L70-L70] x1 == 0U [2024-01-27 14:52:48,133 INFO L98 nessWitnessExtractor]: Location invariant before [L70-L70] z1 == 0U [2024-01-27 14:52:48,134 INFO L98 nessWitnessExtractor]: Location invariant before [L70-L70] l1 == 0U [2024-01-27 14:52:48,134 INFO L98 nessWitnessExtractor]: Location invariant before [L70-L70] x2 == 0U [2024-01-27 14:52:48,134 INFO L98 nessWitnessExtractor]: Location invariant before [L70-L70] l2 == 0U [2024-01-27 14:52:48,134 INFO L98 nessWitnessExtractor]: Location invariant before [L70-L70] z2 == 0U [2024-01-27 14:52:48,134 INFO L98 nessWitnessExtractor]: Location invariant before [L44-L44] (unsigned long )_argptr == 0UL [2024-01-27 14:52:48,134 INFO L98 nessWitnessExtractor]: Location invariant before [L46-L46] (unsigned long )_argptr == 0UL [2024-01-27 14:52:48,134 INFO L98 nessWitnessExtractor]: Location invariant before [L48-L48] (unsigned long )_argptr == 0UL [2024-01-27 14:52:48,135 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] (unsigned long )_argptr == 0UL [2024-01-27 14:52:48,135 INFO L98 nessWitnessExtractor]: Location invariant before [L56-L56] (unsigned long )_argptr == 0UL [2024-01-27 14:52:48,135 INFO L98 nessWitnessExtractor]: Location invariant before [L55-L59] (unsigned long )_argptr == 0UL [2024-01-27 14:52:48,135 INFO L98 nessWitnessExtractor]: Location invariant before [L62-L62] (unsigned long )_argptr == 0UL [2024-01-27 14:52:48,135 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L47] l1 == 0U [2024-01-27 14:52:48,135 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L47] z1 == 0U [2024-01-27 14:52:48,136 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L47] x2 == 0U [2024-01-27 14:52:48,136 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L47] y == 0U [2024-01-27 14:52:48,136 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L47] z2 == 0U [2024-01-27 14:52:48,136 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L47] l2 == 0U [2024-01-27 14:52:48,136 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L47] (unsigned long )_argptr == 0UL [2024-01-27 14:52:48,137 INFO L98 nessWitnessExtractor]: Location invariant before [L43-L47] x1 == 0U [2024-01-27 14:52:48,137 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] (unsigned long )_argptr == 0UL [2024-01-27 14:52:48,137 INFO L98 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-01-27 14:52:48,137 INFO L98 nessWitnessExtractor]: Location invariant before [L68-L68] x1 == 0U [2024-01-27 14:52:48,137 INFO L98 nessWitnessExtractor]: Location invariant before [L68-L68] z1 == 0U [2024-01-27 14:52:48,137 INFO L98 nessWitnessExtractor]: Location invariant before [L68-L68] y == 0U [2024-01-27 14:52:48,137 INFO L98 nessWitnessExtractor]: Location invariant before [L68-L68] x2 == 0U [2024-01-27 14:52:48,138 INFO L98 nessWitnessExtractor]: Location invariant before [L68-L68] z2 == 0U [2024-01-27 14:52:48,138 INFO L98 nessWitnessExtractor]: Location invariant before [L68-L68] l1 == 0U [2024-01-27 14:52:48,138 INFO L98 nessWitnessExtractor]: Location invariant before [L68-L68] l2 == 0U [2024-01-27 14:52:48,155 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 14:52:48,271 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/security.wvr.c[1957,1970] [2024-01-27 14:52:48,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 14:52:48,281 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 14:52:48,288 WARN L424 MainDispatcher]: Unable to annotate __assert_fail(const char *__assertion, const char *__file, unsigned int __line, const char *__function) with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-27 14:52:48,318 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/security.wvr.c[1957,1970] [2024-01-27 14:52:48,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 14:52:48,330 INFO L206 MainTranslator]: Completed translation [2024-01-27 14:52:48,330 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:48 WrapperNode [2024-01-27 14:52:48,330 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 14:52:48,331 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 14:52:48,331 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 14:52:48,331 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 14:52:48,336 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 27.01 02:52:48" (1/1) ... [2024-01-27 14:52:48,341 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 27.01 02:52:48" (1/1) ... [2024-01-27 14:52:48,360 INFO L138 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2024-01-27 14:52:48,360 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 14:52:48,361 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 14:52:48,361 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 14:52:48,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 14:52:48,368 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:48" (1/1) ... [2024-01-27 14:52:48,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:48" (1/1) ... [2024-01-27 14:52:48,382 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:48" (1/1) ... [2024-01-27 14:52:48,399 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-27 14:52:48,402 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:48" (1/1) ... [2024-01-27 14:52:48,402 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:48" (1/1) ... [2024-01-27 14:52:48,408 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:48" (1/1) ... [2024-01-27 14:52:48,414 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:48" (1/1) ... [2024-01-27 14:52:48,415 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:48" (1/1) ... [2024-01-27 14:52:48,416 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:48" (1/1) ... [2024-01-27 14:52:48,417 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 14:52:48,418 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 14:52:48,418 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 14:52:48,418 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 14:52:48,419 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:48" (1/1) ... [2024-01-27 14:52:48,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:52:48,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 14:52:48,441 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) [2024-01-27 14:52:48,442 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 [2024-01-27 14:52:48,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 14:52:48,479 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 14:52:48,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 14:52:48,479 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 14:52:48,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 14:52:48,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 14:52:48,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 14:52:48,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 14:52:48,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 14:52:48,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 14:52:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 14:52:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 14:52:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 14:52:48,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 14:52:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 14:52:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 14:52:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 14:52:48,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 14:52:48,484 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 14:52:48,576 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 14:52:48,578 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 14:52:48,766 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 14:52:48,766 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 14:52:48,864 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 14:52:48,866 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 14:52:48,867 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 02:52:48 BoogieIcfgContainer [2024-01-27 14:52:48,868 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 14:52:48,870 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 14:52:48,870 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 14:52:48,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 14:52:48,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 02:52:48" (1/4) ... [2024-01-27 14:52:48,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fdcea1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 02:52:48, skipping insertion in model container [2024-01-27 14:52:48,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:52:48" (2/4) ... [2024-01-27 14:52:48,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fdcea1c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 02:52:48, skipping insertion in model container [2024-01-27 14:52:48,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:52:48" (3/4) ... [2024-01-27 14:52:48,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fdcea1c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 02:52:48, skipping insertion in model container [2024-01-27 14:52:48,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 02:52:48" (4/4) ... [2024-01-27 14:52:48,875 INFO L112 eAbstractionObserver]: Analyzing ICFG security.wvr.c [2024-01-27 14:52:48,900 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 14:52:48,901 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2024-01-27 14:52:48,901 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 14:52:48,992 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 14:52:49,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 83 transitions, 180 flow [2024-01-27 14:52:49,041 INFO L124 PetriNetUnfolderBase]: 2/81 cut-off events. [2024-01-27 14:52:49,041 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 14:52:49,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 81 events. 2/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 115 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2024-01-27 14:52:49,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 83 transitions, 180 flow [2024-01-27 14:52:49,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 80 transitions, 172 flow [2024-01-27 14:52:49,054 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 14:52:49,059 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;@1671f175, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 14:52:49,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2024-01-27 14:52:49,068 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 14:52:49,068 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-27 14:52:49,068 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 14:52:49,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:52:49,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-27 14:52:49,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-27 14:52:49,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:52:49,077 INFO L85 PathProgramCache]: Analyzing trace with hash 9481, now seen corresponding path program 1 times [2024-01-27 14:52:49,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:52:49,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182597313] [2024-01-27 14:52:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:52:49,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:52:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:52:49,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:52:49,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:52:49,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182597313] [2024-01-27 14:52:49,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182597313] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:52:49,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:52:49,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:52:49,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390234986] [2024-01-27 14:52:49,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:52:49,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:52:49,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:52:49,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:52:49,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:52:49,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 83 [2024-01-27 14:52:49,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2024-01-27 14:52:49,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:52:49,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 83 [2024-01-27 14:52:49,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:52:49,475 INFO L124 PetriNetUnfolderBase]: 229/538 cut-off events. [2024-01-27 14:52:49,475 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-01-27 14:52:49,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 538 events. 229/538 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2490 event pairs, 143 based on Foata normal form. 14/489 useless extension candidates. Maximal degree in co-relation 851. Up to 300 conditions per place. [2024-01-27 14:52:49,481 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 37 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-01-27 14:52:49,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 89 transitions, 271 flow [2024-01-27 14:52:49,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:52:49,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:52:49,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2024-01-27 14:52:49,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7951807228915663 [2024-01-27 14:52:49,491 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 172 flow. Second operand 3 states and 198 transitions. [2024-01-27 14:52:49,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 89 transitions, 271 flow [2024-01-27 14:52:49,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 89 transitions, 261 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 14:52:49,497 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 168 flow [2024-01-27 14:52:49,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=160, 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=3, PETRI_FLOW=168, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2024-01-27 14:52:49,501 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -3 predicate places. [2024-01-27 14:52:49,501 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 168 flow [2024-01-27 14:52:49,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2024-01-27 14:52:49,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:52:49,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-27 14:52:49,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 14:52:49,502 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-27 14:52:49,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:52:49,503 INFO L85 PathProgramCache]: Analyzing trace with hash 294228, now seen corresponding path program 1 times [2024-01-27 14:52:49,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:52:49,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201235199] [2024-01-27 14:52:49,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:52:49,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:52:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:52:49,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:52:49,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:52:49,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201235199] [2024-01-27 14:52:49,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201235199] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:52:49,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:52:49,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:52:49,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944089549] [2024-01-27 14:52:49,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:52:49,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:52:49,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:52:49,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:52:49,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:52:49,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 83 [2024-01-27 14:52:49,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2024-01-27 14:52:49,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:52:49,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 83 [2024-01-27 14:52:49,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:52:49,658 INFO L124 PetriNetUnfolderBase]: 225/533 cut-off events. [2024-01-27 14:52:49,658 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-01-27 14:52:49,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 533 events. 225/533 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2466 event pairs, 127 based on Foata normal form. 2/474 useless extension candidates. Maximal degree in co-relation 725. Up to 268 conditions per place. [2024-01-27 14:52:49,665 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 36 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2024-01-27 14:52:49,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 86 transitions, 264 flow [2024-01-27 14:52:49,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:52:49,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:52:49,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2024-01-27 14:52:49,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7911646586345381 [2024-01-27 14:52:49,671 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 168 flow. Second operand 3 states and 197 transitions. [2024-01-27 14:52:49,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 86 transitions, 264 flow [2024-01-27 14:52:49,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 86 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:52:49,677 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 162 flow [2024-01-27 14:52:49,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2024-01-27 14:52:49,678 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -6 predicate places. [2024-01-27 14:52:49,678 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 162 flow [2024-01-27 14:52:49,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2024-01-27 14:52:49,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:52:49,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 14:52:49,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 14:52:49,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-27 14:52:49,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:52:49,680 INFO L85 PathProgramCache]: Analyzing trace with hash 9121356, now seen corresponding path program 1 times [2024-01-27 14:52:49,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:52:49,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607945583] [2024-01-27 14:52:49,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:52:49,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:52:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:52:49,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:52:49,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:52:49,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607945583] [2024-01-27 14:52:49,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607945583] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:52:49,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:52:49,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:52:49,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893493691] [2024-01-27 14:52:49,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:52:49,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:52:49,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:52:49,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:52:49,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:52:49,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 83 [2024-01-27 14:52:49,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2024-01-27 14:52:49,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:52:49,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 83 [2024-01-27 14:52:49,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:52:49,800 INFO L124 PetriNetUnfolderBase]: 246/576 cut-off events. [2024-01-27 14:52:49,800 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-01-27 14:52:49,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 576 events. 246/576 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2849 event pairs, 33 based on Foata normal form. 3/517 useless extension candidates. Maximal degree in co-relation 743. Up to 364 conditions per place. [2024-01-27 14:52:49,803 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 37 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2024-01-27 14:52:49,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 84 transitions, 261 flow [2024-01-27 14:52:49,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:52:49,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:52:49,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2024-01-27 14:52:49,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7951807228915663 [2024-01-27 14:52:49,804 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 162 flow. Second operand 3 states and 198 transitions. [2024-01-27 14:52:49,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 84 transitions, 261 flow [2024-01-27 14:52:49,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 255 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:52:49,806 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 162 flow [2024-01-27 14:52:49,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2024-01-27 14:52:49,807 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -7 predicate places. [2024-01-27 14:52:49,807 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 162 flow [2024-01-27 14:52:49,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2024-01-27 14:52:49,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:52:49,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-27 14:52:49,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 14:52:49,808 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-27 14:52:49,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:52:49,808 INFO L85 PathProgramCache]: Analyzing trace with hash 282762301, now seen corresponding path program 1 times [2024-01-27 14:52:49,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:52:49,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679290518] [2024-01-27 14:52:49,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:52:49,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:52:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:52:49,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:52:49,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:52:49,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679290518] [2024-01-27 14:52:49,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679290518] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:52:49,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:52:49,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:52:49,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365919698] [2024-01-27 14:52:49,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:52:49,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:52:49,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:52:49,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:52:49,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:52:49,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 83 [2024-01-27 14:52:49,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2024-01-27 14:52:49,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:52:49,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 83 [2024-01-27 14:52:49,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:52:49,938 INFO L124 PetriNetUnfolderBase]: 232/541 cut-off events. [2024-01-27 14:52:49,938 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-01-27 14:52:49,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1018 conditions, 541 events. 232/541 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2597 event pairs, 121 based on Foata normal form. 8/492 useless extension candidates. Maximal degree in co-relation 560. Up to 238 conditions per place. [2024-01-27 14:52:49,941 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 36 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2024-01-27 14:52:49,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 82 transitions, 259 flow [2024-01-27 14:52:49,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:52:49,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:52:49,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2024-01-27 14:52:49,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7951807228915663 [2024-01-27 14:52:49,943 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 162 flow. Second operand 3 states and 198 transitions. [2024-01-27 14:52:49,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 82 transitions, 259 flow [2024-01-27 14:52:49,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 82 transitions, 255 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:52:49,944 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 165 flow [2024-01-27 14:52:49,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2024-01-27 14:52:49,945 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -8 predicate places. [2024-01-27 14:52:49,945 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 165 flow [2024-01-27 14:52:49,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2024-01-27 14:52:49,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:52:49,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-27 14:52:49,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 14:52:49,946 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-27 14:52:49,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:52:49,947 INFO L85 PathProgramCache]: Analyzing trace with hash 175697013, now seen corresponding path program 1 times [2024-01-27 14:52:49,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:52:49,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771283588] [2024-01-27 14:52:49,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:52:49,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:52:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:52:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:52:49,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:52:49,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771283588] [2024-01-27 14:52:49,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771283588] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:52:49,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:52:49,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:52:49,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732986128] [2024-01-27 14:52:49,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:52:49,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:52:49,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:52:49,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:52:49,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:52:49,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 83 [2024-01-27 14:52:49,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:52:49,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:52:49,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 83 [2024-01-27 14:52:49,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:52:50,069 INFO L124 PetriNetUnfolderBase]: 251/583 cut-off events. [2024-01-27 14:52:50,069 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-01-27 14:52:50,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1159 conditions, 583 events. 251/583 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2968 event pairs, 213 based on Foata normal form. 1/521 useless extension candidates. Maximal degree in co-relation 663. Up to 434 conditions per place. [2024-01-27 14:52:50,072 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 26 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-01-27 14:52:50,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 70 transitions, 219 flow [2024-01-27 14:52:50,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:52:50,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:52:50,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2024-01-27 14:52:50,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7550200803212851 [2024-01-27 14:52:50,074 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 165 flow. Second operand 3 states and 188 transitions. [2024-01-27 14:52:50,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 70 transitions, 219 flow [2024-01-27 14:52:50,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 70 transitions, 213 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:52:50,076 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 161 flow [2024-01-27 14:52:50,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2024-01-27 14:52:50,079 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -9 predicate places. [2024-01-27 14:52:50,079 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 161 flow [2024-01-27 14:52:50,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:52:50,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:52:50,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:52:50,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 14:52:50,080 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-27 14:52:50,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:52:50,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1151640378, now seen corresponding path program 1 times [2024-01-27 14:52:50,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:52:50,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40953363] [2024-01-27 14:52:50,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:52:50,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:52:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:52:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:52:50,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:52:50,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40953363] [2024-01-27 14:52:50,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40953363] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:52:50,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:52:50,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:52:50,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441241580] [2024-01-27 14:52:50,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:52:50,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:52:50,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:52:50,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:52:50,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:52:50,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 83 [2024-01-27 14:52:50,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2024-01-27 14:52:50,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:52:50,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 83 [2024-01-27 14:52:50,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:52:50,232 INFO L124 PetriNetUnfolderBase]: 251/737 cut-off events. [2024-01-27 14:52:50,233 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-27 14:52:50,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 737 events. 251/737 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4195 event pairs, 7 based on Foata normal form. 2/646 useless extension candidates. Maximal degree in co-relation 1274. Up to 405 conditions per place. [2024-01-27 14:52:50,235 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 37 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-01-27 14:52:50,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 79 transitions, 262 flow [2024-01-27 14:52:50,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:52:50,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:52:50,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2024-01-27 14:52:50,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7911646586345381 [2024-01-27 14:52:50,237 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 161 flow. Second operand 3 states and 197 transitions. [2024-01-27 14:52:50,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 79 transitions, 262 flow [2024-01-27 14:52:50,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 79 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:52:50,240 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 157 flow [2024-01-27 14:52:50,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2024-01-27 14:52:50,241 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -11 predicate places. [2024-01-27 14:52:50,241 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 157 flow [2024-01-27 14:52:50,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2024-01-27 14:52:50,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:52:50,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:52:50,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 14:52:50,242 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-27 14:52:50,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:52:50,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1341113653, now seen corresponding path program 1 times [2024-01-27 14:52:50,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:52:50,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799042667] [2024-01-27 14:52:50,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:52:50,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:52:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:52:50,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:52:50,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:52:50,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799042667] [2024-01-27 14:52:50,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799042667] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:52:50,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:52:50,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:52:50,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767982275] [2024-01-27 14:52:50,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:52:50,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:52:50,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:52:50,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:52:50,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:52:50,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 83 [2024-01-27 14:52:50,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2024-01-27 14:52:50,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:52:50,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 83 [2024-01-27 14:52:50,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:52:50,360 INFO L124 PetriNetUnfolderBase]: 225/524 cut-off events. [2024-01-27 14:52:50,361 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-01-27 14:52:50,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 524 events. 225/524 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2479 event pairs, 103 based on Foata normal form. 18/488 useless extension candidates. Maximal degree in co-relation 870. Up to 206 conditions per place. [2024-01-27 14:52:50,363 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 35 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2024-01-27 14:52:50,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 254 flow [2024-01-27 14:52:50,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:52:50,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:52:50,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2024-01-27 14:52:50,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7911646586345381 [2024-01-27 14:52:50,365 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 157 flow. Second operand 3 states and 197 transitions. [2024-01-27 14:52:50,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 254 flow [2024-01-27 14:52:50,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 76 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:52:50,367 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 153 flow [2024-01-27 14:52:50,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-01-27 14:52:50,369 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -14 predicate places. [2024-01-27 14:52:50,369 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 153 flow [2024-01-27 14:52:50,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2024-01-27 14:52:50,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:52:50,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:52:50,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 14:52:50,374 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-27 14:52:50,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:52:50,374 INFO L85 PathProgramCache]: Analyzing trace with hash 967687493, now seen corresponding path program 1 times [2024-01-27 14:52:50,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:52:50,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622635403] [2024-01-27 14:52:50,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:52:50,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:52:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:52:50,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:52:50,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:52:50,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622635403] [2024-01-27 14:52:50,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622635403] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:52:50,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:52:50,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:52:50,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111932364] [2024-01-27 14:52:50,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:52:50,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:52:50,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:52:50,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:52:50,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:52:50,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 83 [2024-01-27 14:52:50,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2024-01-27 14:52:50,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:52:50,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 83 [2024-01-27 14:52:50,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:52:50,569 INFO L124 PetriNetUnfolderBase]: 251/529 cut-off events. [2024-01-27 14:52:50,569 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 14:52:50,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 529 events. 251/529 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2175 event pairs, 119 based on Foata normal form. 54/524 useless extension candidates. Maximal degree in co-relation 653. Up to 404 conditions per place. [2024-01-27 14:52:50,571 INFO L140 encePairwiseOnDemand]: 75/83 looper letters, 37 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-01-27 14:52:50,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 246 flow [2024-01-27 14:52:50,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:52:50,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:52:50,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 237 transitions. [2024-01-27 14:52:50,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.713855421686747 [2024-01-27 14:52:50,573 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 153 flow. Second operand 4 states and 237 transitions. [2024-01-27 14:52:50,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 246 flow [2024-01-27 14:52:50,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 70 transitions, 240 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:52:50,576 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 139 flow [2024-01-27 14:52:50,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-01-27 14:52:50,578 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -19 predicate places. [2024-01-27 14:52:50,578 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 139 flow [2024-01-27 14:52:50,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2024-01-27 14:52:50,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:52:50,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:52:50,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 14:52:50,579 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-27 14:52:50,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:52:50,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2061150763, now seen corresponding path program 1 times [2024-01-27 14:52:50,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:52:50,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220215379] [2024-01-27 14:52:50,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:52:50,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:52:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:52:50,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:52:50,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:52:50,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220215379] [2024-01-27 14:52:50,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220215379] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:52:50,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:52:50,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:52:50,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607979169] [2024-01-27 14:52:50,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:52:50,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:52:50,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:52:50,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:52:50,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:52:50,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 83 [2024-01-27 14:52:50,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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) [2024-01-27 14:52:50,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:52:50,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 83 [2024-01-27 14:52:50,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:52:50,723 INFO L124 PetriNetUnfolderBase]: 251/462 cut-off events. [2024-01-27 14:52:50,723 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-01-27 14:52:50,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 462 events. 251/462 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1830 event pairs, 13 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 962. Up to 372 conditions per place. [2024-01-27 14:52:50,725 INFO L140 encePairwiseOnDemand]: 75/83 looper letters, 45 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2024-01-27 14:52:50,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 72 transitions, 260 flow [2024-01-27 14:52:50,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:52:50,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:52:50,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 245 transitions. [2024-01-27 14:52:50,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7379518072289156 [2024-01-27 14:52:50,726 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 139 flow. Second operand 4 states and 245 transitions. [2024-01-27 14:52:50,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 72 transitions, 260 flow [2024-01-27 14:52:50,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 72 transitions, 257 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:52:50,727 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 128 flow [2024-01-27 14:52:50,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-01-27 14:52:50,728 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -24 predicate places. [2024-01-27 14:52:50,728 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 128 flow [2024-01-27 14:52:50,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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) [2024-01-27 14:52:50,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:52:50,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:52:50,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 14:52:50,728 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-27 14:52:50,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:52:50,729 INFO L85 PathProgramCache]: Analyzing trace with hash -683906129, now seen corresponding path program 1 times [2024-01-27 14:52:50,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:52:50,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870186312] [2024-01-27 14:52:50,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:52:50,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:52:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 14:52:50,736 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-27 14:52:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 14:52:50,754 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-27 14:52:50,754 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-27 14:52:50,755 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 54 remaining) [2024-01-27 14:52:50,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 54 remaining) [2024-01-27 14:52:50,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 54 remaining) [2024-01-27 14:52:50,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 54 remaining) [2024-01-27 14:52:50,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 54 remaining) [2024-01-27 14:52:50,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 54 remaining) [2024-01-27 14:52:50,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 54 remaining) [2024-01-27 14:52:50,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 54 remaining) [2024-01-27 14:52:50,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 54 remaining) [2024-01-27 14:52:50,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 54 remaining) [2024-01-27 14:52:50,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 54 remaining) [2024-01-27 14:52:50,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 54 remaining) [2024-01-27 14:52:50,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 54 remaining) [2024-01-27 14:52:50,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 54 remaining) [2024-01-27 14:52:50,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 54 remaining) [2024-01-27 14:52:50,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 54 remaining) [2024-01-27 14:52:50,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 54 remaining) [2024-01-27 14:52:50,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 54 remaining) [2024-01-27 14:52:50,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 54 remaining) [2024-01-27 14:52:50,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 54 remaining) [2024-01-27 14:52:50,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 54 remaining) [2024-01-27 14:52:50,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 54 remaining) [2024-01-27 14:52:50,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 54 remaining) [2024-01-27 14:52:50,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 54 remaining) [2024-01-27 14:52:50,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 54 remaining) [2024-01-27 14:52:50,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 54 remaining) [2024-01-27 14:52:50,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 54 remaining) [2024-01-27 14:52:50,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 54 remaining) [2024-01-27 14:52:50,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 54 remaining) [2024-01-27 14:52:50,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 54 remaining) [2024-01-27 14:52:50,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 54 remaining) [2024-01-27 14:52:50,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 54 remaining) [2024-01-27 14:52:50,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 54 remaining) [2024-01-27 14:52:50,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION (20 of 54 remaining) [2024-01-27 14:52:50,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 54 remaining) [2024-01-27 14:52:50,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 54 remaining) [2024-01-27 14:52:50,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 54 remaining) [2024-01-27 14:52:50,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 54 remaining) [2024-01-27 14:52:50,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 54 remaining) [2024-01-27 14:52:50,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 54 remaining) [2024-01-27 14:52:50,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 54 remaining) [2024-01-27 14:52:50,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 54 remaining) [2024-01-27 14:52:50,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 54 remaining) [2024-01-27 14:52:50,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 54 remaining) [2024-01-27 14:52:50,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 54 remaining) [2024-01-27 14:52:50,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 54 remaining) [2024-01-27 14:52:50,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 54 remaining) [2024-01-27 14:52:50,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 54 remaining) [2024-01-27 14:52:50,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 54 remaining) [2024-01-27 14:52:50,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 54 remaining) [2024-01-27 14:52:50,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 54 remaining) [2024-01-27 14:52:50,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 54 remaining) [2024-01-27 14:52:50,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 54 remaining) [2024-01-27 14:52:50,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 54 remaining) [2024-01-27 14:52:50,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 14:52:50,761 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:52:50,765 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 14:52:50,765 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 14:52:50,789 INFO L503 ceAbstractionStarter]: Automizer considered 32 witness invariants [2024-01-27 14:52:50,789 INFO L504 ceAbstractionStarter]: WitnessConsidered=32 [2024-01-27 14:52:50,790 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 02:52:50 BasicIcfg [2024-01-27 14:52:50,790 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 14:52:50,791 INFO L158 Benchmark]: Toolchain (without parser) took 2691.66ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 105.4MB in the beginning and 103.6MB in the end (delta: 1.7MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. [2024-01-27 14:52:50,791 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 111.1MB. Free memory was 69.2MB in the beginning and 69.1MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:52:50,791 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 138.4MB. Free memory is still 108.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:52:50,791 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.66ms. Allocated memory is still 138.4MB. Free memory was 105.0MB in the beginning and 89.2MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-01-27 14:52:50,793 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.58ms. Allocated memory is still 138.4MB. Free memory was 89.2MB in the beginning and 87.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 14:52:50,793 INFO L158 Benchmark]: Boogie Preprocessor took 56.18ms. Allocated memory is still 138.4MB. Free memory was 87.7MB in the beginning and 85.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 14:52:50,794 INFO L158 Benchmark]: RCFGBuilder took 449.83ms. Allocated memory is still 138.4MB. Free memory was 85.6MB in the beginning and 60.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-01-27 14:52:50,794 INFO L158 Benchmark]: TraceAbstraction took 1920.51ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 59.8MB in the beginning and 103.6MB in the end (delta: -43.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:52:50,795 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 111.1MB. Free memory was 69.2MB in the beginning and 69.1MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 138.4MB. Free memory is still 108.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.66ms. Allocated memory is still 138.4MB. Free memory was 105.0MB in the beginning and 89.2MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.58ms. Allocated memory is still 138.4MB. Free memory was 89.2MB in the beginning and 87.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.18ms. Allocated memory is still 138.4MB. Free memory was 87.7MB in the beginning and 85.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 449.83ms. Allocated memory is still 138.4MB. Free memory was 85.6MB in the beginning and 60.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1920.51ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 59.8MB in the beginning and 103.6MB in the end (delta: -43.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 43]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L38] 0 unsigned int y, x1, z1, l1, x2, z2, l2; [L66] 0 pthread_t t1, t2; VAL [l1=0, l2=0, t1={3:0}, t2={5:0}, x1=0, x2=0, y=0, z1=0, z2=0] [L68] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[l2],IntegerLiteral[0U]]]] VAL [l1=0, l2=0, t1={3:0}, t2={5:0}, x1=0, x2=0, y=0, z1=0, z2=0] [L68] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[l1],IntegerLiteral[0U]]]] VAL [l1=0, l2=0, t1={3:0}, t2={5:0}, x1=0, x2=0, y=0, z1=0, z2=0] [L68] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[z2],IntegerLiteral[0U]]]] VAL [l1=0, l2=0, t1={3:0}, t2={5:0}, x1=0, x2=0, y=0, z1=0, z2=0] [L68] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x2],IntegerLiteral[0U]]]] VAL [l1=0, l2=0, t1={3:0}, t2={5:0}, x1=0, x2=0, y=0, z1=0, z2=0] [L68] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0U]]]] VAL [l1=0, l2=0, t1={3:0}, t2={5:0}, x1=0, x2=0, y=0, z1=0, z2=0] [L68] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[z1],IntegerLiteral[0U]]]] VAL [l1=0, l2=0, t1={3:0}, t2={5:0}, x1=0, x2=0, y=0, z1=0, z2=0] [L68] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x1],IntegerLiteral[0U]]]] [L68] 0 y = __VERIFIER_nondet_uint() [L70] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[z2],IntegerLiteral[0U]]]] VAL [l1=0, l2=0, t1={3:0}, t2={5:0}, x1=0, x2=0, z1=0, z2=0] [L70] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[l2],IntegerLiteral[0U]]]] VAL [l1=0, l2=0, t1={3:0}, t2={5:0}, x1=0, x2=0, z1=0, z2=0] [L70] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x2],IntegerLiteral[0U]]]] VAL [l1=0, l2=0, t1={3:0}, t2={5:0}, x1=0, x2=0, z1=0, z2=0] [L70] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[l1],IntegerLiteral[0U]]]] VAL [l1=0, l2=0, t1={3:0}, t2={5:0}, x1=0, x2=0, z1=0, z2=0] [L70] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[z1],IntegerLiteral[0U]]]] VAL [l1=0, l2=0, t1={3:0}, t2={5:0}, x1=0, x2=0, z1=0, z2=0] [L70] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x1],IntegerLiteral[0U]]]] [L70] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [_argptr={0:0}, l1=0, l2=0, t1={3:0}, t2={5:0}, x1=0, x2=0, z1=0, z2=0] [L42] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[_argptr]],IntegerLiteral[0UL]]]] [L42] 1 z1 = 1 VAL [_argptr={0:0}, _argptr={0:0}, l1=0, l2=0, x1=0, x2=0, z1=1, z2=0] [L43] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x1],IntegerLiteral[0U]]]] VAL [_argptr={0:0}, _argptr={0:0}, l1=0, l2=0, x1=0, x2=0, z1=1, z2=0] [L43] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[_argptr]],IntegerLiteral[0UL]]]] VAL [_argptr={0:0}, _argptr={0:0}, l1=0, l2=0, x1=0, x2=0, z1=1, z2=0] [L43] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[l2],IntegerLiteral[0U]]]] VAL [_argptr={0:0}, _argptr={0:0}, l1=0, l2=0, x1=0, x2=0, z1=1, z2=0] [L43] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[z2],IntegerLiteral[0U]]]] VAL [_argptr={0:0}, _argptr={0:0}, l1=0, l2=0, x1=0, x2=0, z1=1, z2=0] [L43] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0U]]]] VAL [_argptr={0:0}, _argptr={0:0}, l1=0, l2=0, x1=0, x2=0, y=1, z1=1, z2=0] - UnprovableResult [Line: 42]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 43]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 43]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 43]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 43]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 43]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 43]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 43]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 44]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 46]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 48]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 50]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 54]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 55]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 56]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 58]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 68]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 68]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 68]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 68]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 68]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 68]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 68]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 76]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 71]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 128 locations, 54 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.7s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 316 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 249 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 532 IncrementalHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 31 mSDtfsCounter, 532 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=0, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 142 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-01-27 14:52:50,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE