./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp3x3.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/bench-exp3x3.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/bench-exp3x3.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp3x3.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 14:50:07,622 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 14:50:07,673 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 14:50:07,676 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 14:50:07,676 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 14:50:07,701 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 14:50:07,701 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 14:50:07,702 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 14:50:07,702 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 14:50:07,702 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 14:50:07,703 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 14:50:07,703 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 14:50:07,703 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 14:50:07,704 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 14:50:07,704 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 14:50:07,704 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 14:50:07,705 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 14:50:07,705 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 14:50:07,705 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 14:50:07,706 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 14:50:07,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 14:50:07,706 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 14:50:07,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 14:50:07,707 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 14:50:07,707 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 14:50:07,707 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 14:50:07,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 14:50:07,708 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 14:50:07,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 14:50:07,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 14:50:07,708 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 14:50:07,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 14:50:07,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:50:07,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 14:50:07,709 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 14:50:07,709 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 14:50:07,710 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 14:50:07,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 14:50:07,710 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 14:50:07,710 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 14:50:07,710 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 14:50:07,711 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 14:50:07,711 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 14:50:07,711 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-27 14:50:07,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 14:50:07,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 14:50:07,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 14:50:07,932 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 14:50:07,932 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 14:50:07,933 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2024-01-27 14:50:09,041 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 14:50:09,182 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 14:50:09,184 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2024-01-27 14:50:09,208 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a428fe07f/bfbcb62ccbc8440a896892c6e68e3f6f/FLAGeca198f0b [2024-01-27 14:50:09,219 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a428fe07f/bfbcb62ccbc8440a896892c6e68e3f6f [2024-01-27 14:50:09,225 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-27 14:50:09,226 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-27 14:50:09,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/bench-exp3x3.wvr.yml/witness.yml [2024-01-27 14:50:09,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 14:50:09,323 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-27 14:50:09,325 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 14:50:09,325 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 14:50:09,328 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 14:50:09,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:50:09" (1/2) ... [2024-01-27 14:50:09,331 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e463acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:50:09, skipping insertion in model container [2024-01-27 14:50:09,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:50:09" (1/2) ... [2024-01-27 14:50:09,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5ebaa09b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:50:09, skipping insertion in model container [2024-01-27 14:50:09,333 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:50:09" (2/2) ... [2024-01-27 14:50:09,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e463acc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:09, skipping insertion in model container [2024-01-27 14:50:09,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:50:09" (2/2) ... [2024-01-27 14:50:09,333 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-27 14:50:09,360 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-27 14:50:09,361 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] x5 == 0U [2024-01-27 14:50:09,361 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] x4 == 0U [2024-01-27 14:50:09,361 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] n == 0U [2024-01-27 14:50:09,361 INFO L98 nessWitnessExtractor]: Location invariant before [L92-L92] x6 == 0U [2024-01-27 14:50:09,362 INFO L98 nessWitnessExtractor]: Location invariant before [L55-L55] (unsigned long )_argptr == 0UL [2024-01-27 14:50:09,362 INFO L98 nessWitnessExtractor]: Location invariant before [L39-L39] (unsigned long )_argptr == 0UL [2024-01-27 14:50:09,362 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] (long long )n - (long long )x1 >= 0LL [2024-01-27 14:50:09,363 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] x1 == 0U [2024-01-27 14:50:09,363 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] (long long )n + (long long )x1 >= 0LL [2024-01-27 14:50:09,363 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] (0LL - (long long )n) + (long long )x1 >= 0LL [2024-01-27 14:50:09,363 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] (0LL - (long long )n) - (long long )x1 >= 0LL [2024-01-27 14:50:09,363 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] n == 0U [2024-01-27 14:50:09,363 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] x2 == 0U [2024-01-27 14:50:09,363 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] x6 == 0U [2024-01-27 14:50:09,364 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] x5 == 0U [2024-01-27 14:50:09,364 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] x4 == 0U [2024-01-27 14:50:09,364 INFO L98 nessWitnessExtractor]: Location invariant before [L89-L89] x3 == 0U [2024-01-27 14:50:09,364 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] x2 == 0U [2024-01-27 14:50:09,364 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] x4 == 0U [2024-01-27 14:50:09,365 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] x3 == 0U [2024-01-27 14:50:09,365 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] x5 == 0U [2024-01-27 14:50:09,365 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] n == 0U [2024-01-27 14:50:09,366 INFO L98 nessWitnessExtractor]: Location invariant before [L90-L90] x6 == 0U [2024-01-27 14:50:09,366 INFO L98 nessWitnessExtractor]: Location invariant before [L42-L42] (unsigned long )_argptr == 0UL [2024-01-27 14:50:09,366 INFO L98 nessWitnessExtractor]: Loop invariant at [L78-L80] (unsigned long )_argptr == 0UL [2024-01-27 14:50:09,366 INFO L98 nessWitnessExtractor]: Loop invariant at [L70-L72] (unsigned long )_argptr == 0UL [2024-01-27 14:50:09,366 INFO L98 nessWitnessExtractor]: Location invariant before [L71-L71] (unsigned long )_argptr == 0UL [2024-01-27 14:50:09,366 INFO L98 nessWitnessExtractor]: Location invariant before [L66-L66] (unsigned long )_argptr == 0UL [2024-01-27 14:50:09,367 INFO L98 nessWitnessExtractor]: Location invariant before [L79-L79] (unsigned long )_argptr == 0UL [2024-01-27 14:50:09,367 INFO L98 nessWitnessExtractor]: Location invariant before [L93-L93] x6 == 0U [2024-01-27 14:50:09,367 INFO L98 nessWitnessExtractor]: Location invariant before [L93-L93] x5 == 0U [2024-01-27 14:50:09,367 INFO L98 nessWitnessExtractor]: Location invariant before [L93-L93] n == 0U [2024-01-27 14:50:09,367 INFO L98 nessWitnessExtractor]: Location invariant before [L74-L74] (unsigned long )_argptr == 0UL [2024-01-27 14:50:09,367 INFO L98 nessWitnessExtractor]: Loop invariant at [L62-L64] (unsigned long )_argptr == 0UL [2024-01-27 14:50:09,367 INFO L98 nessWitnessExtractor]: Location invariant before [L63-L63] (unsigned long )_argptr == 0UL [2024-01-27 14:50:09,367 INFO L98 nessWitnessExtractor]: Location invariant before [L47-L47] (unsigned long )_argptr == 0UL [2024-01-27 14:50:09,368 INFO L98 nessWitnessExtractor]: Location invariant before [L82-L82] (unsigned long )_argptr == 0UL [2024-01-27 14:50:09,368 INFO L98 nessWitnessExtractor]: Location invariant before [L91-L91] x3 == 0U [2024-01-27 14:50:09,369 INFO L98 nessWitnessExtractor]: Location invariant before [L91-L91] x6 == 0U [2024-01-27 14:50:09,369 INFO L98 nessWitnessExtractor]: Location invariant before [L91-L91] n == 0U [2024-01-27 14:50:09,369 INFO L98 nessWitnessExtractor]: Location invariant before [L91-L91] x4 == 0U [2024-01-27 14:50:09,369 INFO L98 nessWitnessExtractor]: Location invariant before [L91-L91] x5 == 0U [2024-01-27 14:50:09,369 INFO L98 nessWitnessExtractor]: Loop invariant at [L38-L40] (unsigned long )_argptr == 0UL [2024-01-27 14:50:09,370 INFO L98 nessWitnessExtractor]: Loop invariant at [L54-L56] (unsigned long )_argptr == 0UL [2024-01-27 14:50:09,370 INFO L98 nessWitnessExtractor]: Location invariant after [L37-L43] n == 0U [2024-01-27 14:50:09,370 INFO L98 nessWitnessExtractor]: Location invariant before [L50-L50] (unsigned long )_argptr == 0UL [2024-01-27 14:50:09,370 INFO L98 nessWitnessExtractor]: Location invariant before [L94-L94] n == 0U [2024-01-27 14:50:09,370 INFO L98 nessWitnessExtractor]: Location invariant before [L94-L94] x6 == 0U [2024-01-27 14:50:09,370 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] (unsigned long )_argptr == 0UL [2024-01-27 14:50:09,371 INFO L98 nessWitnessExtractor]: Location invariant before [L95-L95] n == 0U [2024-01-27 14:50:09,371 INFO L98 nessWitnessExtractor]: Loop invariant at [L46-L48] (unsigned long )_argptr == 0UL [2024-01-27 14:50:09,391 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 14:50:09,553 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/bench-exp3x3.wvr.c[2703,2716] [2024-01-27 14:50:09,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 14:50:09,568 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-27 14:50:09,610 WARN L424 MainDispatcher]: Unable to annotate void* thread1(void* _argptr) { while (x1 < n) { x1 = x1 + x1; } return 0; } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-27 14:50:09,650 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/bench-exp3x3.wvr.c[2703,2716] [2024-01-27 14:50:09,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 14:50:09,666 INFO L206 MainTranslator]: Completed translation [2024-01-27 14:50:09,667 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:09 WrapperNode [2024-01-27 14:50:09,668 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 14:50:09,668 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 14:50:09,669 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 14:50:09,669 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 14:50:09,674 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 02:50:09" (1/1) ... [2024-01-27 14:50:09,693 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 02:50:09" (1/1) ... [2024-01-27 14:50:09,742 INFO L138 Inliner]: procedures = 22, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 163 [2024-01-27 14:50:09,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 14:50:09,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 14:50:09,756 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 14:50:09,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 14:50:09,766 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 02:50:09" (1/1) ... [2024-01-27 14:50:09,766 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 02:50:09" (1/1) ... [2024-01-27 14:50:09,768 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 02:50:09" (1/1) ... [2024-01-27 14:50:09,806 INFO L175 MemorySlicer]: Split 14 memory accesses to 7 slices as follows [2, 2, 2, 2, 2, 2, 2]. 14 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 1, 1, 1, 1]. [2024-01-27 14:50:09,812 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 02:50:09" (1/1) ... [2024-01-27 14:50:09,812 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 02:50:09" (1/1) ... [2024-01-27 14:50:09,819 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 02:50:09" (1/1) ... [2024-01-27 14:50:09,831 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 02:50:09" (1/1) ... [2024-01-27 14:50:09,833 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 02:50:09" (1/1) ... [2024-01-27 14:50:09,835 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 02:50:09" (1/1) ... [2024-01-27 14:50:09,839 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 14:50:09,840 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 14:50:09,840 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 14:50:09,840 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 14:50:09,841 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 02:50:09" (1/1) ... [2024-01-27 14:50:09,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:50:09,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 14:50:09,907 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 14:50:09,958 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 14:50:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 14:50:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 14:50:09,984 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 14:50:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 14:50:09,984 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 14:50:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 14:50:09,984 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 14:50:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-27 14:50:09,984 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-27 14:50:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 14:50:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 14:50:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 14:50:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 14:50:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 14:50:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-27 14:50:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-01-27 14:50:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-01-27 14:50:09,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-01-27 14:50:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-01-27 14:50:09,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-01-27 14:50:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 14:50:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 14:50:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 14:50:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 14:50:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 14:50:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 14:50:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-27 14:50:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-01-27 14:50:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 14:50:09,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 14:50:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 14:50:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 14:50:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 14:50:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 14:50:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 14:50:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-27 14:50:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-01-27 14:50:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 14:50:09,991 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 14:50:10,143 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 14:50:10,145 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 14:50:10,526 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 14:50:10,526 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 14:50:10,702 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 14:50:10,702 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-27 14:50:10,703 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 02:50:10 BoogieIcfgContainer [2024-01-27 14:50:10,703 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 14:50:10,706 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 14:50:10,706 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 14:50:10,708 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 14:50:10,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 02:50:09" (1/4) ... [2024-01-27 14:50:10,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7054230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 02:50:10, skipping insertion in model container [2024-01-27 14:50:10,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:50:09" (2/4) ... [2024-01-27 14:50:10,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7054230 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 02:50:10, skipping insertion in model container [2024-01-27 14:50:10,710 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 02:50:09" (3/4) ... [2024-01-27 14:50:10,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7054230 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 02:50:10, skipping insertion in model container [2024-01-27 14:50:10,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 02:50:10" (4/4) ... [2024-01-27 14:50:10,711 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2024-01-27 14:50:10,723 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 14:50:10,724 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2024-01-27 14:50:10,724 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 14:50:10,821 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-01-27 14:50:10,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 163 transitions, 368 flow [2024-01-27 14:50:10,912 INFO L124 PetriNetUnfolderBase]: 6/157 cut-off events. [2024-01-27 14:50:10,912 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-27 14:50:10,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 157 events. 6/157 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 313 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 140. Up to 2 conditions per place. [2024-01-27 14:50:10,918 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 163 transitions, 368 flow [2024-01-27 14:50:10,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 156 transitions, 348 flow [2024-01-27 14:50:10,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 14:50:10,946 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;@329908a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 14:50:10,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2024-01-27 14:50:10,949 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 14:50:10,949 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-27 14:50:10,949 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 14:50:10,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:50:10,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-27 14:50:10,951 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 84 more)] === [2024-01-27 14:50:10,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:50:10,954 INFO L85 PathProgramCache]: Analyzing trace with hash 17048, now seen corresponding path program 1 times [2024-01-27 14:50:10,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:50:10,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115733435] [2024-01-27 14:50:10,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:50:10,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:50:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:50:11,302 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 14:50:11,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:50:11,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115733435] [2024-01-27 14:50:11,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115733435] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:50:11,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:50:11,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:50:11,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115065801] [2024-01-27 14:50:11,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:50:11,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:50:11,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:50:11,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:50:11,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:50:11,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 163 [2024-01-27 14:50:11,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 156 transitions, 348 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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 14:50:11,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:50:11,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 163 [2024-01-27 14:50:11,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:50:18,731 INFO L124 PetriNetUnfolderBase]: 52702/72133 cut-off events. [2024-01-27 14:50:18,731 INFO L125 PetriNetUnfolderBase]: For 2857/2857 co-relation queries the response was YES. [2024-01-27 14:50:19,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141779 conditions, 72133 events. 52702/72133 cut-off events. For 2857/2857 co-relation queries the response was YES. Maximal size of possible extension queue 4456. Compared 540821 event pairs, 51885 based on Foata normal form. 3/65913 useless extension candidates. Maximal degree in co-relation 115756. Up to 65541 conditions per place. [2024-01-27 14:50:19,697 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 48 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2024-01-27 14:50:19,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 152 transitions, 440 flow [2024-01-27 14:50:19,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:50:19,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:50:19,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2024-01-27 14:50:19,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7730061349693251 [2024-01-27 14:50:19,709 INFO L175 Difference]: Start difference. First operand has 169 places, 156 transitions, 348 flow. Second operand 3 states and 378 transitions. [2024-01-27 14:50:19,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 152 transitions, 440 flow [2024-01-27 14:50:20,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 152 transitions, 416 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-01-27 14:50:20,209 INFO L231 Difference]: Finished difference. Result has 155 places, 152 transitions, 320 flow [2024-01-27 14:50:20,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=155, PETRI_TRANSITIONS=152} [2024-01-27 14:50:20,215 INFO L281 CegarLoopForPetriNet]: 169 programPoint places, -14 predicate places. [2024-01-27 14:50:20,215 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 152 transitions, 320 flow [2024-01-27 14:50:20,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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 14:50:20,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:50:20,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-27 14:50:20,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 14:50:20,216 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 84 more)] === [2024-01-27 14:50:20,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:50:20,217 INFO L85 PathProgramCache]: Analyzing trace with hash 529071, now seen corresponding path program 1 times [2024-01-27 14:50:20,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:50:20,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548612625] [2024-01-27 14:50:20,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:50:20,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:50:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:50:20,332 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 14:50:20,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:50:20,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548612625] [2024-01-27 14:50:20,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548612625] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:50:20,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:50:20,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:50:20,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311036057] [2024-01-27 14:50:20,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:50:20,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:50:20,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:50:20,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:50:20,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:50:20,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 163 [2024-01-27 14:50:20,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 152 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 14:50:20,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:50:20,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 163 [2024-01-27 14:50:20,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:50:26,113 INFO L124 PetriNetUnfolderBase]: 52702/72129 cut-off events. [2024-01-27 14:50:26,114 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-01-27 14:50:26,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139042 conditions, 72129 events. 52702/72129 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 4456. Compared 540477 event pairs, 51885 based on Foata normal form. 4/65914 useless extension candidates. Maximal degree in co-relation 138995. Up to 65540 conditions per place. [2024-01-27 14:50:27,185 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 48 selfloop transitions, 2 changer transitions 0/148 dead transitions. [2024-01-27 14:50:27,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 148 transitions, 412 flow [2024-01-27 14:50:27,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:50:27,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:50:27,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2024-01-27 14:50:27,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7668711656441718 [2024-01-27 14:50:27,192 INFO L175 Difference]: Start difference. First operand has 155 places, 152 transitions, 320 flow. Second operand 3 states and 375 transitions. [2024-01-27 14:50:27,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 148 transitions, 412 flow [2024-01-27 14:50:27,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 148 transitions, 408 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:50:27,197 INFO L231 Difference]: Finished difference. Result has 151 places, 148 transitions, 312 flow [2024-01-27 14:50:27,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=151, PETRI_TRANSITIONS=148} [2024-01-27 14:50:27,200 INFO L281 CegarLoopForPetriNet]: 169 programPoint places, -18 predicate places. [2024-01-27 14:50:27,200 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 148 transitions, 312 flow [2024-01-27 14:50:27,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 14:50:27,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:50:27,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 14:50:27,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 14:50:27,201 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 84 more)] === [2024-01-27 14:50:27,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:50:27,201 INFO L85 PathProgramCache]: Analyzing trace with hash 16401757, now seen corresponding path program 1 times [2024-01-27 14:50:27,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:50:27,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062582903] [2024-01-27 14:50:27,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:50:27,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:50:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:50:27,282 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 14:50:27,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:50:27,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062582903] [2024-01-27 14:50:27,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062582903] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:50:27,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:50:27,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:50:27,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861966045] [2024-01-27 14:50:27,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:50:27,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:50:27,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:50:27,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:50:27,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:50:27,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 163 [2024-01-27 14:50:27,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 148 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 14:50:27,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:50:27,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 163 [2024-01-27 14:50:27,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:50:32,693 INFO L124 PetriNetUnfolderBase]: 52714/72220 cut-off events. [2024-01-27 14:50:32,693 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-01-27 14:50:33,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139133 conditions, 72220 events. 52714/72220 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 4456. Compared 542061 event pairs, 51885 based on Foata normal form. 5/65986 useless extension candidates. Maximal degree in co-relation 139082. Up to 65539 conditions per place. [2024-01-27 14:50:33,704 INFO L140 encePairwiseOnDemand]: 156/163 looper letters, 48 selfloop transitions, 2 changer transitions 0/143 dead transitions. [2024-01-27 14:50:33,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 143 transitions, 402 flow [2024-01-27 14:50:33,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:50:33,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:50:33,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2024-01-27 14:50:33,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7627811860940695 [2024-01-27 14:50:33,707 INFO L175 Difference]: Start difference. First operand has 151 places, 148 transitions, 312 flow. Second operand 3 states and 373 transitions. [2024-01-27 14:50:33,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 143 transitions, 402 flow [2024-01-27 14:50:33,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 143 transitions, 398 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:50:33,709 INFO L231 Difference]: Finished difference. Result has 146 places, 143 transitions, 302 flow [2024-01-27 14:50:33,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=146, PETRI_TRANSITIONS=143} [2024-01-27 14:50:33,710 INFO L281 CegarLoopForPetriNet]: 169 programPoint places, -23 predicate places. [2024-01-27 14:50:33,710 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 143 transitions, 302 flow [2024-01-27 14:50:33,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 14:50:33,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:50:33,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-27 14:50:33,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 14:50:33,711 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 84 more)] === [2024-01-27 14:50:33,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:50:33,712 INFO L85 PathProgramCache]: Analyzing trace with hash 508455068, now seen corresponding path program 1 times [2024-01-27 14:50:33,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:50:33,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991672116] [2024-01-27 14:50:33,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:50:33,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:50:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:50:33,749 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 14:50:33,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:50:33,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991672116] [2024-01-27 14:50:33,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991672116] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:50:33,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:50:33,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:50:33,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603541549] [2024-01-27 14:50:33,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:50:33,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:50:33,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:50:33,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:50:33,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:50:33,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 163 [2024-01-27 14:50:33,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 143 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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 14:50:33,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:50:33,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 163 [2024-01-27 14:50:33,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:50:39,315 INFO L124 PetriNetUnfolderBase]: 52714/72214 cut-off events. [2024-01-27 14:50:39,315 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-01-27 14:50:39,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139127 conditions, 72214 events. 52714/72214 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 4456. Compared 541864 event pairs, 51885 based on Foata normal form. 6/65986 useless extension candidates. Maximal degree in co-relation 139075. Up to 65538 conditions per place. [2024-01-27 14:50:40,059 INFO L140 encePairwiseOnDemand]: 155/163 looper letters, 48 selfloop transitions, 2 changer transitions 0/137 dead transitions. [2024-01-27 14:50:40,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 137 transitions, 390 flow [2024-01-27 14:50:40,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:50:40,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:50:40,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2024-01-27 14:50:40,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7586912065439673 [2024-01-27 14:50:40,061 INFO L175 Difference]: Start difference. First operand has 146 places, 143 transitions, 302 flow. Second operand 3 states and 371 transitions. [2024-01-27 14:50:40,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 137 transitions, 390 flow [2024-01-27 14:50:40,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 137 transitions, 386 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:50:40,063 INFO L231 Difference]: Finished difference. Result has 140 places, 137 transitions, 290 flow [2024-01-27 14:50:40,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=140, PETRI_TRANSITIONS=137} [2024-01-27 14:50:40,064 INFO L281 CegarLoopForPetriNet]: 169 programPoint places, -29 predicate places. [2024-01-27 14:50:40,065 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 137 transitions, 290 flow [2024-01-27 14:50:40,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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 14:50:40,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:50:40,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-27 14:50:40,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 14:50:40,066 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 84 more)] === [2024-01-27 14:50:40,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:50:40,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1417761506, now seen corresponding path program 1 times [2024-01-27 14:50:40,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:50:40,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620728708] [2024-01-27 14:50:40,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:50:40,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:50:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:50:40,101 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 14:50:40,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:50:40,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620728708] [2024-01-27 14:50:40,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620728708] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:50:40,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:50:40,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:50:40,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088121072] [2024-01-27 14:50:40,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:50:40,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:50:40,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:50:40,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:50:40,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:50:40,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 163 [2024-01-27 14:50:40,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 137 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 14:50:40,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:50:40,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 163 [2024-01-27 14:50:40,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:50:45,430 INFO L124 PetriNetUnfolderBase]: 52714/72212 cut-off events. [2024-01-27 14:50:45,430 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-01-27 14:50:45,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139125 conditions, 72212 events. 52714/72212 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 4456. Compared 541920 event pairs, 51885 based on Foata normal form. 1/65980 useless extension candidates. Maximal degree in co-relation 139071. Up to 65542 conditions per place. [2024-01-27 14:50:46,433 INFO L140 encePairwiseOnDemand]: 159/163 looper letters, 48 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2024-01-27 14:50:46,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 135 transitions, 386 flow [2024-01-27 14:50:46,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:50:46,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:50:46,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 379 transitions. [2024-01-27 14:50:46,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7750511247443763 [2024-01-27 14:50:46,435 INFO L175 Difference]: Start difference. First operand has 140 places, 137 transitions, 290 flow. Second operand 3 states and 379 transitions. [2024-01-27 14:50:46,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 135 transitions, 386 flow [2024-01-27 14:50:46,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 135 transitions, 382 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:50:46,442 INFO L231 Difference]: Finished difference. Result has 138 places, 135 transitions, 286 flow [2024-01-27 14:50:46,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=138, PETRI_TRANSITIONS=135} [2024-01-27 14:50:46,444 INFO L281 CegarLoopForPetriNet]: 169 programPoint places, -31 predicate places. [2024-01-27 14:50:46,445 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 135 transitions, 286 flow [2024-01-27 14:50:46,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 14:50:46,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:50:46,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:50:46,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 14:50:46,445 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 84 more)] === [2024-01-27 14:50:46,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:50:46,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1000933098, now seen corresponding path program 1 times [2024-01-27 14:50:46,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:50:46,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755339664] [2024-01-27 14:50:46,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:50:46,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:50:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:50:46,541 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 14:50:46,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:50:46,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755339664] [2024-01-27 14:50:46,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755339664] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:50:46,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:50:46,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:50:46,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596796680] [2024-01-27 14:50:46,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:50:46,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:50:46,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:50:46,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:50:46,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:50:46,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 163 [2024-01-27 14:50:46,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 135 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 14:50:46,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:50:46,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 163 [2024-01-27 14:50:46,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand