./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i --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/48_ticket_lock_low_contention_vs-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 27552612 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/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/48_ticket_lock_low_contention_vs-pthread.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-2755261-m [2024-01-26 15:11:37,257 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-26 15:11:37,335 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-26 15:11:37,340 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-26 15:11:37,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-26 15:11:37,365 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-26 15:11:37,369 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-26 15:11:37,369 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-26 15:11:37,369 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-26 15:11:37,372 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-26 15:11:37,373 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-26 15:11:37,373 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-26 15:11:37,373 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-26 15:11:37,374 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-26 15:11:37,374 INFO L153 SettingsManager]: * Use SBE=true [2024-01-26 15:11:37,375 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-26 15:11:37,375 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-26 15:11:37,375 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-26 15:11:37,375 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-26 15:11:37,375 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-26 15:11:37,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-26 15:11:37,376 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-26 15:11:37,376 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-26 15:11:37,376 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-26 15:11:37,376 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-26 15:11:37,377 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-26 15:11:37,377 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-26 15:11:37,377 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-26 15:11:37,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-26 15:11:37,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-26 15:11:37,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-26 15:11:37,379 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-26 15:11:37,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-26 15:11:37,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-26 15:11:37,379 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-26 15:11:37,380 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-26 15:11:37,380 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-26 15:11:37,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-26 15:11:37,380 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-26 15:11:37,380 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-26 15:11:37,381 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-26 15:11:37,381 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-26 15:11:37,381 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-26 15:11:37,381 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-26 15:11:37,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-26 15:11:37,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-26 15:11:37,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-26 15:11:37,635 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-26 15:11:37,635 INFO L274 PluginConnector]: CDTParser initialized [2024-01-26 15:11:37,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i [2024-01-26 15:11:38,637 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-26 15:11:38,831 INFO L384 CDTParser]: Found 1 translation units. [2024-01-26 15:11:38,832 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i [2024-01-26 15:11:38,845 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fff0595b/f54d20b2af1649c3859df07089c8df89/FLAG0d00790f8 [2024-01-26 15:11:38,861 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fff0595b/f54d20b2af1649c3859df07089c8df89 [2024-01-26 15:11:38,864 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-26 15:11:38,864 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-26 15:11:38,866 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/48_ticket_lock_low_contention_vs-pthread.yml/witness.yml [2024-01-26 15:11:38,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-26 15:11:38,937 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-26 15:11:38,938 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-26 15:11:38,938 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-26 15:11:38,942 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-26 15:11:38,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 03:11:38" (1/2) ... [2024-01-26 15:11:38,945 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36fd98ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:11:38, skipping insertion in model container [2024-01-26 15:11:38,945 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 03:11:38" (1/2) ... [2024-01-26 15:11:38,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@15301821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:11:38, skipping insertion in model container [2024-01-26 15:11:38,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 26.01 03:11:38" (2/2) ... [2024-01-26 15:11:38,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36fd98ad and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:11:38, skipping insertion in model container [2024-01-26 15:11:38,947 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 26.01 03:11:38" (2/2) ... [2024-01-26 15:11:38,948 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-26 15:11:38,970 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-26 15:11:38,971 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] (unsigned long )arg == 0UL [2024-01-26 15:11:38,971 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 0U [2024-01-26 15:11:38,972 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-26 15:11:38,972 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-26 15:11:38,972 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-26 15:11:38,973 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-26 15:11:38,973 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-26 15:11:38,973 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L694] (unsigned long )arg == 0UL [2024-01-26 15:11:38,973 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L694] c == 0U [2024-01-26 15:11:38,973 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-26 15:11:38,973 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-26 15:11:38,973 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 0U [2024-01-26 15:11:38,974 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-26 15:11:38,974 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-26 15:11:38,974 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-26 15:11:38,974 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-26 15:11:38,974 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-26 15:11:38,974 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-26 15:11:38,974 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-26 15:11:38,975 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-26 15:11:38,975 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 0U [2024-01-26 15:11:38,975 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-26 15:11:38,975 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-26 15:11:38,975 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-26 15:11:38,976 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 0U [2024-01-26 15:11:38,976 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-26 15:11:38,976 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-26 15:11:38,976 INFO L98 nessWitnessExtractor]: Location invariant before [L695-L695] (unsigned long )arg == 0UL [2024-01-26 15:11:39,012 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-26 15:11:39,205 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i[30570,30583] [2024-01-26 15:11:39,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-26 15:11:39,229 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-26 15:11:39,290 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i[30570,30583] [2024-01-26 15:11:39,293 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-26 15:11:39,297 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-26 15:11:39,327 INFO L206 MainTranslator]: Completed translation [2024-01-26 15:11:39,327 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:11:39 WrapperNode [2024-01-26 15:11:39,328 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-26 15:11:39,328 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-26 15:11:39,329 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-26 15:11:39,329 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-26 15:11:39,333 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 26.01 03:11:39" (1/1) ... [2024-01-26 15:11:39,346 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 26.01 03:11:39" (1/1) ... [2024-01-26 15:11:39,360 INFO L138 Inliner]: procedures = 165, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2024-01-26 15:11:39,360 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-26 15:11:39,361 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-26 15:11:39,361 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-26 15:11:39,361 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-26 15:11:39,369 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:11:39" (1/1) ... [2024-01-26 15:11:39,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:11:39" (1/1) ... [2024-01-26 15:11:39,380 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:11:39" (1/1) ... [2024-01-26 15:11:39,396 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 5, 1]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-01-26 15:11:39,396 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:11:39" (1/1) ... [2024-01-26 15:11:39,396 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:11:39" (1/1) ... [2024-01-26 15:11:39,400 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:11:39" (1/1) ... [2024-01-26 15:11:39,409 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:11:39" (1/1) ... [2024-01-26 15:11:39,410 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:11:39" (1/1) ... [2024-01-26 15:11:39,410 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:11:39" (1/1) ... [2024-01-26 15:11:39,412 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-26 15:11:39,413 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-26 15:11:39,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-26 15:11:39,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-26 15:11:39,413 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:11:39" (1/1) ... [2024-01-26 15:11:39,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-26 15:11:39,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-26 15:11:39,444 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) [2024-01-26 15:11:39,449 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 [2024-01-26 15:11:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-26 15:11:39,469 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-26 15:11:39,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-26 15:11:39,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-26 15:11:39,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-26 15:11:39,470 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-26 15:11:39,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-26 15:11:39,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-26 15:11:39,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-26 15:11:39,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-26 15:11:39,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-26 15:11:39,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-26 15:11:39,472 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-26 15:11:39,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-26 15:11:39,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-26 15:11:39,473 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-26 15:11:39,589 INFO L244 CfgBuilder]: Building ICFG [2024-01-26 15:11:39,591 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-26 15:11:39,753 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-26 15:11:39,754 INFO L293 CfgBuilder]: Performing block encoding [2024-01-26 15:11:39,813 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-26 15:11:39,814 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-01-26 15:11:39,814 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 03:11:39 BoogieIcfgContainer [2024-01-26 15:11:39,814 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-26 15:11:39,815 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-26 15:11:39,816 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-26 15:11:39,818 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-26 15:11:39,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.01 03:11:38" (1/4) ... [2024-01-26 15:11:39,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54294a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 03:11:39, skipping insertion in model container [2024-01-26 15:11:39,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 26.01 03:11:38" (2/4) ... [2024-01-26 15:11:39,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54294a63 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 26.01 03:11:39, skipping insertion in model container [2024-01-26 15:11:39,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:11:39" (3/4) ... [2024-01-26 15:11:39,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54294a63 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 26.01 03:11:39, skipping insertion in model container [2024-01-26 15:11:39,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 03:11:39" (4/4) ... [2024-01-26 15:11:39,820 INFO L112 eAbstractionObserver]: Analyzing ICFG 48_ticket_lock_low_contention_vs-pthread.i [2024-01-26 15:11:39,834 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-26 15:11:39,834 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-01-26 15:11:39,834 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-26 15:11:39,900 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-26 15:11:39,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 67 transitions, 138 flow [2024-01-26 15:11:40,005 INFO L124 PetriNetUnfolderBase]: 5/101 cut-off events. [2024-01-26 15:11:40,005 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-26 15:11:40,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 101 events. 5/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 324 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2024-01-26 15:11:40,009 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 67 transitions, 138 flow [2024-01-26 15:11:40,012 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 67 transitions, 138 flow [2024-01-26 15:11:40,018 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-26 15:11:40,023 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;@58d00cc6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 15:11:40,023 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2024-01-26 15:11:40,026 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-26 15:11:40,026 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-01-26 15:11:40,026 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-26 15:11:40,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:11:40,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-26 15:11:40,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-26 15:11:40,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:11:40,031 INFO L85 PathProgramCache]: Analyzing trace with hash 7499457, now seen corresponding path program 1 times [2024-01-26 15:11:40,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:11:40,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174959840] [2024-01-26 15:11:40,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:11:40,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:11:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:11:40,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:11:40,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:11:40,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174959840] [2024-01-26 15:11:40,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174959840] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:11:40,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:11:40,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-26 15:11:40,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291843701] [2024-01-26 15:11:40,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:11:40,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-26 15:11:40,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:11:40,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-26 15:11:40,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-26 15:11:40,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 67 [2024-01-26 15:11:40,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 138 flow. Second operand has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 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) [2024-01-26 15:11:40,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:11:40,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 67 [2024-01-26 15:11:40,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:11:40,307 INFO L124 PetriNetUnfolderBase]: 32/260 cut-off events. [2024-01-26 15:11:40,307 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-26 15:11:40,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 260 events. 32/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1303 event pairs, 32 based on Foata normal form. 14/192 useless extension candidates. Maximal degree in co-relation 297. Up to 87 conditions per place. [2024-01-26 15:11:40,315 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 14 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2024-01-26 15:11:40,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 160 flow [2024-01-26 15:11:40,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-26 15:11:40,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-26 15:11:40,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 117 transitions. [2024-01-26 15:11:40,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8731343283582089 [2024-01-26 15:11:40,325 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 138 flow. Second operand 2 states and 117 transitions. [2024-01-26 15:11:40,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 160 flow [2024-01-26 15:11:40,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 64 transitions, 160 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-26 15:11:40,329 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 132 flow [2024-01-26 15:11:40,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=132, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-01-26 15:11:40,334 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2024-01-26 15:11:40,334 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 132 flow [2024-01-26 15:11:40,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 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) [2024-01-26 15:11:40,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:11:40,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-26 15:11:40,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-26 15:11:40,335 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-26 15:11:40,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:11:40,336 INFO L85 PathProgramCache]: Analyzing trace with hash 232556047, now seen corresponding path program 1 times [2024-01-26 15:11:40,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:11:40,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993797397] [2024-01-26 15:11:40,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:11:40,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:11:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:11:40,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:11:40,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:11:40,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993797397] [2024-01-26 15:11:40,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993797397] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:11:40,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:11:40,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-26 15:11:40,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519332042] [2024-01-26 15:11:40,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:11:40,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-26 15:11:40,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:11:40,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-26 15:11:40,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-26 15:11:40,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 67 [2024-01-26 15:11:40,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2024-01-26 15:11:40,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:11:40,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 67 [2024-01-26 15:11:40,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:11:40,564 INFO L124 PetriNetUnfolderBase]: 32/224 cut-off events. [2024-01-26 15:11:40,565 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-26 15:11:40,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 224 events. 32/224 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1043 event pairs, 16 based on Foata normal form. 24/192 useless extension candidates. Maximal degree in co-relation 312. Up to 47 conditions per place. [2024-01-26 15:11:40,566 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 16 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2024-01-26 15:11:40,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 164 flow [2024-01-26 15:11:40,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-26 15:11:40,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-26 15:11:40,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-01-26 15:11:40,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7761194029850746 [2024-01-26 15:11:40,568 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 132 flow. Second operand 3 states and 156 transitions. [2024-01-26 15:11:40,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 164 flow [2024-01-26 15:11:40,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-26 15:11:40,570 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 124 flow [2024-01-26 15:11:40,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-01-26 15:11:40,570 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2024-01-26 15:11:40,571 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 124 flow [2024-01-26 15:11:40,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2024-01-26 15:11:40,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:11:40,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-26 15:11:40,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-26 15:11:40,571 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-26 15:11:40,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:11:40,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1380588070, now seen corresponding path program 1 times [2024-01-26 15:11:40,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:11:40,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204670044] [2024-01-26 15:11:40,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:11:40,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:11:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:11:40,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:11:40,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:11:40,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204670044] [2024-01-26 15:11:40,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204670044] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:11:40,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:11:40,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-26 15:11:40,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232850305] [2024-01-26 15:11:40,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:11:40,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-26 15:11:40,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:11:40,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-26 15:11:40,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-26 15:11:40,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 67 [2024-01-26 15:11:40,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:11:40,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:11:40,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 67 [2024-01-26 15:11:40,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:11:40,826 INFO L124 PetriNetUnfolderBase]: 40/302 cut-off events. [2024-01-26 15:11:40,826 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-01-26 15:11:40,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 302 events. 40/302 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1552 event pairs, 0 based on Foata normal form. 36/274 useless extension candidates. Maximal degree in co-relation 421. Up to 85 conditions per place. [2024-01-26 15:11:40,830 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 27 selfloop transitions, 2 changer transitions 2/68 dead transitions. [2024-01-26 15:11:40,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 214 flow [2024-01-26 15:11:40,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-26 15:11:40,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-26 15:11:40,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-01-26 15:11:40,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7798507462686567 [2024-01-26 15:11:40,837 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 124 flow. Second operand 4 states and 209 transitions. [2024-01-26 15:11:40,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 214 flow [2024-01-26 15:11:40,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 68 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-26 15:11:40,841 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 112 flow [2024-01-26 15:11:40,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-01-26 15:11:40,843 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -8 predicate places. [2024-01-26 15:11:40,843 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 112 flow [2024-01-26 15:11:40,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:11:40,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:11:40,843 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-01-26 15:11:40,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-26 15:11:40,844 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-26 15:11:40,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:11:40,844 INFO L85 PathProgramCache]: Analyzing trace with hash 151393908, now seen corresponding path program 1 times [2024-01-26 15:11:40,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:11:40,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813414055] [2024-01-26 15:11:40,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:11:40,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:11:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-26 15:11:40,866 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-26 15:11:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-26 15:11:40,899 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-26 15:11:40,899 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-26 15:11:40,900 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 34 remaining) [2024-01-26 15:11:40,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 34 remaining) [2024-01-26 15:11:40,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 34 remaining) [2024-01-26 15:11:40,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 34 remaining) [2024-01-26 15:11:40,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 34 remaining) [2024-01-26 15:11:40,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 34 remaining) [2024-01-26 15:11:40,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 34 remaining) [2024-01-26 15:11:40,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 34 remaining) [2024-01-26 15:11:40,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (25 of 34 remaining) [2024-01-26 15:11:40,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 34 remaining) [2024-01-26 15:11:40,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 34 remaining) [2024-01-26 15:11:40,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 34 remaining) [2024-01-26 15:11:40,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 34 remaining) [2024-01-26 15:11:40,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 34 remaining) [2024-01-26 15:11:40,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 34 remaining) [2024-01-26 15:11:40,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 34 remaining) [2024-01-26 15:11:40,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 34 remaining) [2024-01-26 15:11:40,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 34 remaining) [2024-01-26 15:11:40,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 34 remaining) [2024-01-26 15:11:40,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (14 of 34 remaining) [2024-01-26 15:11:40,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 34 remaining) [2024-01-26 15:11:40,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 34 remaining) [2024-01-26 15:11:40,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 34 remaining) [2024-01-26 15:11:40,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 34 remaining) [2024-01-26 15:11:40,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 34 remaining) [2024-01-26 15:11:40,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 34 remaining) [2024-01-26 15:11:40,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 34 remaining) [2024-01-26 15:11:40,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 34 remaining) [2024-01-26 15:11:40,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 34 remaining) [2024-01-26 15:11:40,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 34 remaining) [2024-01-26 15:11:40,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (3 of 34 remaining) [2024-01-26 15:11:40,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 34 remaining) [2024-01-26 15:11:40,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 34 remaining) [2024-01-26 15:11:40,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 34 remaining) [2024-01-26 15:11:40,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-26 15:11:40,905 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-01-26 15:11:40,907 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-26 15:11:40,907 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-26 15:11:40,923 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-26 15:11:40,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 98 transitions, 206 flow [2024-01-26 15:11:40,943 INFO L124 PetriNetUnfolderBase]: 8/166 cut-off events. [2024-01-26 15:11:40,946 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-26 15:11:40,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 166 events. 8/166 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 740 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2024-01-26 15:11:40,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 98 transitions, 206 flow [2024-01-26 15:11:40,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 98 transitions, 206 flow [2024-01-26 15:11:40,959 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-26 15:11:40,962 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;@58d00cc6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 15:11:40,962 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2024-01-26 15:11:40,963 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-26 15:11:40,963 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-01-26 15:11:40,963 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-26 15:11:40,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:11:40,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-26 15:11:40,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 42 more)] === [2024-01-26 15:11:40,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:11:40,964 INFO L85 PathProgramCache]: Analyzing trace with hash 10516289, now seen corresponding path program 1 times [2024-01-26 15:11:40,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:11:40,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844290983] [2024-01-26 15:11:40,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:11:40,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:11:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:11:40,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:11:40,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:11:40,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844290983] [2024-01-26 15:11:40,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844290983] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:11:40,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:11:40,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-26 15:11:40,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185415557] [2024-01-26 15:11:40,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:11:40,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-26 15:11:40,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:11:40,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-26 15:11:40,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-26 15:11:40,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 98 [2024-01-26 15:11:40,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 98 transitions, 206 flow. Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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) [2024-01-26 15:11:40,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:11:40,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 98 [2024-01-26 15:11:40,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:11:41,150 INFO L124 PetriNetUnfolderBase]: 372/1570 cut-off events. [2024-01-26 15:11:41,150 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-01-26 15:11:41,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 1570 events. 372/1570 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 13098 event pairs, 372 based on Foata normal form. 124/1244 useless extension candidates. Maximal degree in co-relation 399. Up to 652 conditions per place. [2024-01-26 15:11:41,161 INFO L140 encePairwiseOnDemand]: 94/98 looper letters, 19 selfloop transitions, 0 changer transitions 0/94 dead transitions. [2024-01-26 15:11:41,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 236 flow [2024-01-26 15:11:41,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-26 15:11:41,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-26 15:11:41,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 173 transitions. [2024-01-26 15:11:41,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8826530612244898 [2024-01-26 15:11:41,163 INFO L175 Difference]: Start difference. First operand has 99 places, 98 transitions, 206 flow. Second operand 2 states and 173 transitions. [2024-01-26 15:11:41,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 236 flow [2024-01-26 15:11:41,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 94 transitions, 236 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-26 15:11:41,166 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 198 flow [2024-01-26 15:11:41,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=198, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2024-01-26 15:11:41,167 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 1 predicate places. [2024-01-26 15:11:41,168 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 198 flow [2024-01-26 15:11:41,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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) [2024-01-26 15:11:41,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:11:41,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-26 15:11:41,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-26 15:11:41,168 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 42 more)] === [2024-01-26 15:11:41,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:11:41,168 INFO L85 PathProgramCache]: Analyzing trace with hash 326077937, now seen corresponding path program 1 times [2024-01-26 15:11:41,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:11:41,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357846119] [2024-01-26 15:11:41,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:11:41,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:11:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:11:41,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:11:41,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:11:41,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357846119] [2024-01-26 15:11:41,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357846119] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:11:41,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:11:41,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-26 15:11:41,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870045397] [2024-01-26 15:11:41,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:11:41,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-26 15:11:41,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:11:41,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-26 15:11:41,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-26 15:11:41,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2024-01-26 15:11:41,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2024-01-26 15:11:41,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:11:41,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2024-01-26 15:11:41,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:11:41,386 INFO L124 PetriNetUnfolderBase]: 372/1353 cut-off events. [2024-01-26 15:11:41,387 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-01-26 15:11:41,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2026 conditions, 1353 events. 372/1353 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 10562 event pairs, 275 based on Foata normal form. 124/1169 useless extension candidates. Maximal degree in co-relation 2021. Up to 352 conditions per place. [2024-01-26 15:11:41,394 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 25 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2024-01-26 15:11:41,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 96 transitions, 256 flow [2024-01-26 15:11:41,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-26 15:11:41,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-26 15:11:41,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2024-01-26 15:11:41,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8163265306122449 [2024-01-26 15:11:41,396 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 198 flow. Second operand 3 states and 240 transitions. [2024-01-26 15:11:41,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 96 transitions, 256 flow [2024-01-26 15:11:41,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 96 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-26 15:11:41,399 INFO L231 Difference]: Finished difference. Result has 96 places, 88 transitions, 190 flow [2024-01-26 15:11:41,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2024-01-26 15:11:41,400 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -3 predicate places. [2024-01-26 15:11:41,401 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 190 flow [2024-01-26 15:11:41,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2024-01-26 15:11:41,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:11:41,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-26 15:11:41,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-26 15:11:41,401 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 42 more)] === [2024-01-26 15:11:41,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:11:41,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1518620408, now seen corresponding path program 1 times [2024-01-26 15:11:41,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:11:41,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711148464] [2024-01-26 15:11:41,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:11:41,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:11:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:11:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:11:41,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:11:41,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711148464] [2024-01-26 15:11:41,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711148464] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:11:41,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:11:41,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-26 15:11:41,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994703920] [2024-01-26 15:11:41,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:11:41,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-26 15:11:41,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:11:41,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-26 15:11:41,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-26 15:11:41,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 98 [2024-01-26 15:11:41,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 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) [2024-01-26 15:11:41,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:11:41,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 98 [2024-01-26 15:11:41,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:11:41,664 INFO L124 PetriNetUnfolderBase]: 457/2270 cut-off events. [2024-01-26 15:11:41,665 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-01-26 15:11:41,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3160 conditions, 2270 events. 457/2270 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 20468 event pairs, 260 based on Foata normal form. 189/1885 useless extension candidates. Maximal degree in co-relation 3154. Up to 695 conditions per place. [2024-01-26 15:11:41,678 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 37 selfloop transitions, 2 changer transitions 2/103 dead transitions. [2024-01-26 15:11:41,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 103 transitions, 315 flow [2024-01-26 15:11:41,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-26 15:11:41,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-26 15:11:41,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 319 transitions. [2024-01-26 15:11:41,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8137755102040817 [2024-01-26 15:11:41,679 INFO L175 Difference]: Start difference. First operand has 96 places, 88 transitions, 190 flow. Second operand 4 states and 319 transitions. [2024-01-26 15:11:41,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 103 transitions, 315 flow [2024-01-26 15:11:41,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 103 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-26 15:11:41,685 INFO L231 Difference]: Finished difference. Result has 91 places, 82 transitions, 178 flow [2024-01-26 15:11:41,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=91, PETRI_TRANSITIONS=82} [2024-01-26 15:11:41,686 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -8 predicate places. [2024-01-26 15:11:41,686 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 82 transitions, 178 flow [2024-01-26 15:11:41,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 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) [2024-01-26 15:11:41,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:11:41,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:11:41,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-26 15:11:41,687 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 42 more)] === [2024-01-26 15:11:41,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:11:41,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1027855538, now seen corresponding path program 1 times [2024-01-26 15:11:41,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:11:41,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373682162] [2024-01-26 15:11:41,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:11:41,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:11:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-26 15:11:41,694 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-26 15:11:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-26 15:11:41,699 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-26 15:11:41,699 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-26 15:11:41,700 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 45 remaining) [2024-01-26 15:11:41,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 45 remaining) [2024-01-26 15:11:41,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 45 remaining) [2024-01-26 15:11:41,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 45 remaining) [2024-01-26 15:11:41,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 45 remaining) [2024-01-26 15:11:41,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 45 remaining) [2024-01-26 15:11:41,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 45 remaining) [2024-01-26 15:11:41,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 45 remaining) [2024-01-26 15:11:41,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (36 of 45 remaining) [2024-01-26 15:11:41,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 45 remaining) [2024-01-26 15:11:41,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 45 remaining) [2024-01-26 15:11:41,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 45 remaining) [2024-01-26 15:11:41,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 45 remaining) [2024-01-26 15:11:41,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 45 remaining) [2024-01-26 15:11:41,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 45 remaining) [2024-01-26 15:11:41,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 45 remaining) [2024-01-26 15:11:41,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 45 remaining) [2024-01-26 15:11:41,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 45 remaining) [2024-01-26 15:11:41,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (26 of 45 remaining) [2024-01-26 15:11:41,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 45 remaining) [2024-01-26 15:11:41,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 45 remaining) [2024-01-26 15:11:41,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 45 remaining) [2024-01-26 15:11:41,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 45 remaining) [2024-01-26 15:11:41,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 45 remaining) [2024-01-26 15:11:41,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 45 remaining) [2024-01-26 15:11:41,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 45 remaining) [2024-01-26 15:11:41,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 45 remaining) [2024-01-26 15:11:41,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 45 remaining) [2024-01-26 15:11:41,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 45 remaining) [2024-01-26 15:11:41,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 45 remaining) [2024-01-26 15:11:41,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (14 of 45 remaining) [2024-01-26 15:11:41,703 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 45 remaining) [2024-01-26 15:11:41,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 45 remaining) [2024-01-26 15:11:41,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 45 remaining) [2024-01-26 15:11:41,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 45 remaining) [2024-01-26 15:11:41,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 45 remaining) [2024-01-26 15:11:41,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 45 remaining) [2024-01-26 15:11:41,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 45 remaining) [2024-01-26 15:11:41,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 45 remaining) [2024-01-26 15:11:41,704 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 45 remaining) [2024-01-26 15:11:41,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 45 remaining) [2024-01-26 15:11:41,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (3 of 45 remaining) [2024-01-26 15:11:41,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 45 remaining) [2024-01-26 15:11:41,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 45 remaining) [2024-01-26 15:11:41,705 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 45 remaining) [2024-01-26 15:11:41,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-26 15:11:41,705 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-01-26 15:11:41,709 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2024-01-26 15:11:41,709 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-26 15:11:41,723 INFO L503 ceAbstractionStarter]: Automizer considered 20 witness invariants [2024-01-26 15:11:41,723 INFO L504 ceAbstractionStarter]: WitnessConsidered=20 [2024-01-26 15:11:41,723 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.01 03:11:41 BasicIcfg [2024-01-26 15:11:41,723 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-26 15:11:41,724 INFO L158 Benchmark]: Toolchain (without parser) took 2786.63ms. Allocated memory was 167.8MB in the beginning and 234.9MB in the end (delta: 67.1MB). Free memory was 110.4MB in the beginning and 127.3MB in the end (delta: -16.9MB). Peak memory consumption was 53.4MB. Max. memory is 16.1GB. [2024-01-26 15:11:41,724 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 76.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-26 15:11:41,724 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 167.8MB. Free memory is still 113.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-26 15:11:41,724 INFO L158 Benchmark]: CACSL2BoogieTranslator took 389.84ms. Allocated memory is still 167.8MB. Free memory was 110.4MB in the beginning and 87.4MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-01-26 15:11:41,725 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.67ms. Allocated memory is still 167.8MB. Free memory was 87.4MB in the beginning and 85.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-26 15:11:41,725 INFO L158 Benchmark]: Boogie Preprocessor took 51.35ms. Allocated memory is still 167.8MB. Free memory was 85.3MB in the beginning and 83.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-26 15:11:41,725 INFO L158 Benchmark]: RCFGBuilder took 401.45ms. Allocated memory is still 167.8MB. Free memory was 83.2MB in the beginning and 58.7MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-01-26 15:11:41,725 INFO L158 Benchmark]: TraceAbstraction took 1908.10ms. Allocated memory was 167.8MB in the beginning and 234.9MB in the end (delta: 67.1MB). Free memory was 58.0MB in the beginning and 127.3MB in the end (delta: -69.3MB). Peak memory consumption was 925.0kB. Max. memory is 16.1GB. [2024-01-26 15:11:41,726 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 76.0MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 167.8MB. Free memory is still 113.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 389.84ms. Allocated memory is still 167.8MB. Free memory was 110.4MB in the beginning and 87.4MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.67ms. Allocated memory is still 167.8MB. Free memory was 87.4MB in the beginning and 85.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.35ms. Allocated memory is still 167.8MB. Free memory was 85.3MB in the beginning and 83.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 401.45ms. Allocated memory is still 167.8MB. Free memory was 83.2MB in the beginning and 58.7MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1908.10ms. Allocated memory was 167.8MB in the beginning and 234.9MB in the end (delta: 67.1MB). Free memory was 58.0MB in the beginning and 127.3MB in the end (delta: -69.3MB). Peak memory consumption was 925.0kB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 693]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L689] unsigned c = 0; [L699] pthread_t t; VAL [c=0, s={3:0}, t={5:0}] [L700] COND FALSE !(__VERIFIER_nondet_int()) [L701] CALL thr1(0) [L692] CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, c=0, s={3:0}] [L693] CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[c],IntegerLiteral[1U]]]] VAL [arg={0:0}, arg={0:0}, c=0, s={3:0}] - UnprovableResult [Line: 692]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: 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: 694]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: 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: 694]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 700]: 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 3 procedures, 95 locations, 34 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: 1.0s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 89 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 140 IncrementalHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 0 mSDtfsCounter, 140 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 125 locations, 45 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: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 86 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 151 IncrementalHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 0 mSDtfsCounter, 151 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2024-01-26 15:11:41,753 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