./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/lazy01.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/lazy01.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ab2e0ac4 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/lazy01.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/lazy01.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-ab2e0ac-m [2024-01-29 14:21:13,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-29 14:21:13,285 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-29 14:21:13,291 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-29 14:21:13,291 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-29 14:21:13,317 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-29 14:21:13,317 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-29 14:21:13,318 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-29 14:21:13,318 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-29 14:21:13,322 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-29 14:21:13,322 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-29 14:21:13,322 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-29 14:21:13,323 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-29 14:21:13,324 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-29 14:21:13,324 INFO L153 SettingsManager]: * Use SBE=true [2024-01-29 14:21:13,324 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-29 14:21:13,324 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-29 14:21:13,325 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-29 14:21:13,325 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-29 14:21:13,325 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-29 14:21:13,325 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-29 14:21:13,326 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-29 14:21:13,326 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-29 14:21:13,326 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-29 14:21:13,326 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-29 14:21:13,326 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-29 14:21:13,327 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-29 14:21:13,327 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-29 14:21:13,327 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-29 14:21:13,328 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-29 14:21:13,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-29 14:21:13,329 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-29 14:21:13,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:21:13,329 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-29 14:21:13,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-29 14:21:13,329 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-29 14:21:13,330 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-29 14:21:13,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-29 14:21:13,330 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-29 14:21:13,330 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-29 14:21:13,330 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-29 14:21:13,331 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-29 14:21:13,331 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-29 14:21:13,331 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-29 14:21:13,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-29 14:21:13,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-29 14:21:13,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-29 14:21:13,589 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-29 14:21:13,590 INFO L274 PluginConnector]: CDTParser initialized [2024-01-29 14:21:13,591 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2024-01-29 14:21:14,758 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-29 14:21:14,911 INFO L384 CDTParser]: Found 1 translation units. [2024-01-29 14:21:14,912 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2024-01-29 14:21:14,922 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73b526809/da1638e340244a6ea05691ecd49b6af1/FLAG1fc326cb3 [2024-01-29 14:21:14,933 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73b526809/da1638e340244a6ea05691ecd49b6af1 [2024-01-29 14:21:14,935 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-29 14:21:14,936 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-29 14:21:14,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/lazy01.yml/witness.yml [2024-01-29 14:21:15,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-29 14:21:15,016 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-29 14:21:15,017 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-29 14:21:15,017 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-29 14:21:15,020 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-29 14:21:15,021 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:21:14" (1/2) ... [2024-01-29 14:21:15,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6788f402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:21:15, skipping insertion in model container [2024-01-29 14:21:15,022 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 02:21:14" (1/2) ... [2024-01-29 14:21:15,023 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5ca87c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 02:21:15, skipping insertion in model container [2024-01-29 14:21:15,023 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:21:15" (2/2) ... [2024-01-29 14:21:15,024 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6788f402 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:21:15, skipping insertion in model container [2024-01-29 14:21:15,024 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:21:15" (2/2) ... [2024-01-29 14:21:15,024 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-29 14:21:15,057 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-29 14:21:15,058 INFO L98 nessWitnessExtractor]: Location invariant before [L714-L714] (unsigned long )arg == 0UL [2024-01-29 14:21:15,058 INFO L98 nessWitnessExtractor]: Location invariant before [L714-L714] 0 <= data [2024-01-29 14:21:15,059 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (unsigned long )arg == 0UL [2024-01-29 14:21:15,059 INFO L98 nessWitnessExtractor]: Location invariant before [L730-L730] data == 0 [2024-01-29 14:21:15,059 INFO L98 nessWitnessExtractor]: Location invariant before [L709-L709] (unsigned long )arg == 0UL [2024-01-29 14:21:15,059 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L708] (unsigned long )arg == 0UL [2024-01-29 14:21:15,060 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L708] 1 <= data [2024-01-29 14:21:15,060 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L707] 0 <= data [2024-01-29 14:21:15,060 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L707] (unsigned long )arg == 0UL [2024-01-29 14:21:15,060 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L724] (unsigned long )arg == 0UL [2024-01-29 14:21:15,060 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L724] 0 <= data [2024-01-29 14:21:15,060 INFO L98 nessWitnessExtractor]: Location invariant before [L706-L706] (unsigned long )arg == 0UL [2024-01-29 14:21:15,060 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] (unsigned long )arg == 0UL [2024-01-29 14:21:15,061 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] 3 <= data [2024-01-29 14:21:15,061 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] data != 0 [2024-01-29 14:21:15,061 INFO L98 nessWitnessExtractor]: Location invariant before [L713-L713] (unsigned long )arg == 0UL [2024-01-29 14:21:15,061 INFO L98 nessWitnessExtractor]: Location invariant before [L715-L715] 2 <= data [2024-01-29 14:21:15,061 INFO L98 nessWitnessExtractor]: Location invariant before [L715-L715] (unsigned long )arg == 0UL [2024-01-29 14:21:15,061 INFO L98 nessWitnessExtractor]: Location invariant before [L716-L716] (unsigned long )arg == 0UL [2024-01-29 14:21:15,061 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] (unsigned long )arg == 0UL [2024-01-29 14:21:15,062 INFO L98 nessWitnessExtractor]: Location invariant before [L732-L732] data == 0 [2024-01-29 14:21:15,062 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] data <= 2 [2024-01-29 14:21:15,062 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] (unsigned long )arg == 0UL [2024-01-29 14:21:15,062 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] 0 <= data [2024-01-29 14:21:15,097 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-29 14:21:15,344 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/lazy01.i[31042,31055] [2024-01-29 14:21:15,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:21:15,364 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 Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 14:21:15,448 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/lazy01.i[31042,31055] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-29 14:21:15,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-29 14:21:15,490 INFO L206 MainTranslator]: Completed translation [2024-01-29 14:21:15,490 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:21:15 WrapperNode [2024-01-29 14:21:15,490 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-29 14:21:15,492 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-29 14:21:15,492 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-29 14:21:15,492 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-29 14:21:15,497 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 29.01 02:21:15" (1/1) ... [2024-01-29 14:21:15,528 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 29.01 02:21:15" (1/1) ... [2024-01-29 14:21:15,548 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2024-01-29 14:21:15,548 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-29 14:21:15,549 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-29 14:21:15,549 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-29 14:21:15,550 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-29 14:21:15,557 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:21:15" (1/1) ... [2024-01-29 14:21:15,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:21:15" (1/1) ... [2024-01-29 14:21:15,580 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:21:15" (1/1) ... [2024-01-29 14:21:15,591 INFO L175 MemorySlicer]: Split 13 memory accesses to 5 slices as follows [2, 2, 2, 5, 2]. 38 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 0, 5, 0]. The 3 writes are split as follows [0, 1, 1, 0, 1]. [2024-01-29 14:21:15,612 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:21:15" (1/1) ... [2024-01-29 14:21:15,613 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:21:15" (1/1) ... [2024-01-29 14:21:15,619 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:21:15" (1/1) ... [2024-01-29 14:21:15,630 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:21:15" (1/1) ... [2024-01-29 14:21:15,632 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:21:15" (1/1) ... [2024-01-29 14:21:15,651 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:21:15" (1/1) ... [2024-01-29 14:21:15,653 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-29 14:21:15,655 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-29 14:21:15,656 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-29 14:21:15,656 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-29 14:21:15,656 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:21:15" (1/1) ... [2024-01-29 14:21:15,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-29 14:21:15,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-29 14:21:15,689 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) [2024-01-29 14:21:15,698 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 [2024-01-29 14:21:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-29 14:21:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-29 14:21:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-29 14:21:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-29 14:21:15,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-29 14:21:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-29 14:21:15,720 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-29 14:21:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-29 14:21:15,720 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-29 14:21:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-29 14:21:15,720 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-29 14:21:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-29 14:21:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-29 14:21:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-29 14:21:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-29 14:21:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-29 14:21:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-29 14:21:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-29 14:21:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-29 14:21:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-29 14:21:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-29 14:21:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-29 14:21:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-29 14:21:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-29 14:21:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-29 14:21:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-29 14:21:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-29 14:21:15,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-29 14:21:15,724 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-29 14:21:15,823 INFO L244 CfgBuilder]: Building ICFG [2024-01-29 14:21:15,825 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-29 14:21:16,020 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-29 14:21:16,020 INFO L293 CfgBuilder]: Performing block encoding [2024-01-29 14:21:16,083 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-29 14:21:16,083 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-29 14:21:16,084 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:21:16 BoogieIcfgContainer [2024-01-29 14:21:16,084 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-29 14:21:16,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-29 14:21:16,085 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-29 14:21:16,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-29 14:21:16,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 02:21:14" (1/4) ... [2024-01-29 14:21:16,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371fc9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 02:21:16, skipping insertion in model container [2024-01-29 14:21:16,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 29.01 02:21:15" (2/4) ... [2024-01-29 14:21:16,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371fc9a1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 02:21:16, skipping insertion in model container [2024-01-29 14:21:16,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 29.01 02:21:15" (3/4) ... [2024-01-29 14:21:16,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371fc9a1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 29.01 02:21:16, skipping insertion in model container [2024-01-29 14:21:16,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 02:21:16" (4/4) ... [2024-01-29 14:21:16,090 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2024-01-29 14:21:16,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-29 14:21:16,104 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2024-01-29 14:21:16,104 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-29 14:21:16,150 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-29 14:21:16,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 83 transitions, 187 flow [2024-01-29 14:21:16,223 INFO L124 PetriNetUnfolderBase]: 1/80 cut-off events. [2024-01-29 14:21:16,223 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-29 14:21:16,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 80 events. 1/80 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 224 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2024-01-29 14:21:16,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 83 transitions, 187 flow [2024-01-29 14:21:16,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 78 transitions, 171 flow [2024-01-29 14:21:16,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-29 14:21:16,247 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;@70ac44a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-29 14:21:16,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2024-01-29 14:21:16,249 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-29 14:21:16,249 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-29 14:21:16,249 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-29 14:21:16,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:16,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-29 14:21:16,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-29 14:21:16,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:16,253 INFO L85 PathProgramCache]: Analyzing trace with hash 9158, now seen corresponding path program 1 times [2024-01-29 14:21:16,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:16,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820898353] [2024-01-29 14:21:16,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:16,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:16,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:16,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820898353] [2024-01-29 14:21:16,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820898353] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:16,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:16,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-29 14:21:16,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231487214] [2024-01-29 14:21:16,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:16,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:21:16,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:16,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:21:16,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:21:16,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 83 [2024-01-29 14:21:16,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2024-01-29 14:21:16,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:16,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 83 [2024-01-29 14:21:16,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:17,002 INFO L124 PetriNetUnfolderBase]: 2325/4643 cut-off events. [2024-01-29 14:21:17,002 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2024-01-29 14:21:17,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8401 conditions, 4643 events. 2325/4643 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 38621 event pairs, 1173 based on Foata normal form. 170/4309 useless extension candidates. Maximal degree in co-relation 7355. Up to 3231 conditions per place. [2024-01-29 14:21:17,033 INFO L140 encePairwiseOnDemand]: 68/83 looper letters, 51 selfloop transitions, 4 changer transitions 0/95 dead transitions. [2024-01-29 14:21:17,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 95 transitions, 327 flow [2024-01-29 14:21:17,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:21:17,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:21:17,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2024-01-29 14:21:17,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7831325301204819 [2024-01-29 14:21:17,045 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 171 flow. Second operand 3 states and 195 transitions. [2024-01-29 14:21:17,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 95 transitions, 327 flow [2024-01-29 14:21:17,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 95 transitions, 311 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-29 14:21:17,053 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 192 flow [2024-01-29 14:21:17,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2024-01-29 14:21:17,057 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -4 predicate places. [2024-01-29 14:21:17,057 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 192 flow [2024-01-29 14:21:17,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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) [2024-01-29 14:21:17,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:17,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-29 14:21:17,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-29 14:21:17,058 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-29 14:21:17,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:17,058 INFO L85 PathProgramCache]: Analyzing trace with hash -122850908, now seen corresponding path program 1 times [2024-01-29 14:21:17,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:17,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346023488] [2024-01-29 14:21:17,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:17,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:17,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:17,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346023488] [2024-01-29 14:21:17,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346023488] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:17,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:17,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:21:17,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531799519] [2024-01-29 14:21:17,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:17,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:21:17,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:17,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:21:17,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:21:17,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 83 [2024-01-29 14:21:17,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:17,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:17,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 83 [2024-01-29 14:21:17,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:17,503 INFO L124 PetriNetUnfolderBase]: 1095/2888 cut-off events. [2024-01-29 14:21:17,503 INFO L125 PetriNetUnfolderBase]: For 263/396 co-relation queries the response was YES. [2024-01-29 14:21:17,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5293 conditions, 2888 events. 1095/2888 cut-off events. For 263/396 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 25606 event pairs, 385 based on Foata normal form. 225/2798 useless extension candidates. Maximal degree in co-relation 2261. Up to 1332 conditions per place. [2024-01-29 14:21:17,517 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 37 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-01-29 14:21:17,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 85 transitions, 292 flow [2024-01-29 14:21:17,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:21:17,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:21:17,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 245 transitions. [2024-01-29 14:21:17,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7379518072289156 [2024-01-29 14:21:17,520 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 192 flow. Second operand 4 states and 245 transitions. [2024-01-29 14:21:17,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 85 transitions, 292 flow [2024-01-29 14:21:17,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 85 transitions, 287 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-29 14:21:17,524 INFO L231 Difference]: Finished difference. Result has 81 places, 73 transitions, 184 flow [2024-01-29 14:21:17,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=81, PETRI_TRANSITIONS=73} [2024-01-29 14:21:17,525 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -6 predicate places. [2024-01-29 14:21:17,525 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 73 transitions, 184 flow [2024-01-29 14:21:17,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:17,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:17,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:17,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-29 14:21:17,526 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-29 14:21:17,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:17,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2097258910, now seen corresponding path program 1 times [2024-01-29 14:21:17,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:17,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229891549] [2024-01-29 14:21:17,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:17,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:17,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:17,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:17,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229891549] [2024-01-29 14:21:17,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229891549] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:17,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:17,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:21:17,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055931896] [2024-01-29 14:21:17,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:17,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:21:17,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:17,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:21:17,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:21:17,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 83 [2024-01-29 14:21:17,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 73 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 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) [2024-01-29 14:21:17,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:17,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 83 [2024-01-29 14:21:17,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:17,880 INFO L124 PetriNetUnfolderBase]: 1249/3314 cut-off events. [2024-01-29 14:21:17,881 INFO L125 PetriNetUnfolderBase]: For 246/310 co-relation queries the response was YES. [2024-01-29 14:21:17,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5888 conditions, 3314 events. 1249/3314 cut-off events. For 246/310 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 29783 event pairs, 778 based on Foata normal form. 246/3160 useless extension candidates. Maximal degree in co-relation 5871. Up to 1470 conditions per place. [2024-01-29 14:21:17,898 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 41 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-01-29 14:21:17,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 85 transitions, 301 flow [2024-01-29 14:21:17,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:21:17,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:21:17,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2024-01-29 14:21:17,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-01-29 14:21:17,902 INFO L175 Difference]: Start difference. First operand has 81 places, 73 transitions, 184 flow. Second operand 4 states and 249 transitions. [2024-01-29 14:21:17,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 85 transitions, 301 flow [2024-01-29 14:21:17,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 85 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:21:17,909 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 177 flow [2024-01-29 14:21:17,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-01-29 14:21:17,910 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -9 predicate places. [2024-01-29 14:21:17,910 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 177 flow [2024-01-29 14:21:17,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 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) [2024-01-29 14:21:17,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:17,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:17,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-29 14:21:17,911 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-29 14:21:17,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:17,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1128210920, now seen corresponding path program 1 times [2024-01-29 14:21:17,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:17,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392500912] [2024-01-29 14:21:17,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:17,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:18,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:18,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:18,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392500912] [2024-01-29 14:21:18,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392500912] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:18,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:18,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:21:18,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706296246] [2024-01-29 14:21:18,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:18,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:21:18,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:18,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:21:18,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:21:18,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 83 [2024-01-29 14:21:18,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:18,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:18,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 83 [2024-01-29 14:21:18,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:18,295 INFO L124 PetriNetUnfolderBase]: 1312/3452 cut-off events. [2024-01-29 14:21:18,295 INFO L125 PetriNetUnfolderBase]: For 280/338 co-relation queries the response was YES. [2024-01-29 14:21:18,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6134 conditions, 3452 events. 1312/3452 cut-off events. For 280/338 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 30772 event pairs, 371 based on Foata normal form. 290/3429 useless extension candidates. Maximal degree in co-relation 6118. Up to 1218 conditions per place. [2024-01-29 14:21:18,335 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 50 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-01-29 14:21:18,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 89 transitions, 339 flow [2024-01-29 14:21:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:21:18,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:21:18,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-01-29 14:21:18,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7560240963855421 [2024-01-29 14:21:18,337 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 177 flow. Second operand 4 states and 251 transitions. [2024-01-29 14:21:18,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 89 transitions, 339 flow [2024-01-29 14:21:18,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 89 transitions, 336 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:21:18,339 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 168 flow [2024-01-29 14:21:18,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2024-01-29 14:21:18,339 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -13 predicate places. [2024-01-29 14:21:18,340 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 168 flow [2024-01-29 14:21:18,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:18,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:18,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:18,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-29 14:21:18,341 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-29 14:21:18,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:18,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1777074926, now seen corresponding path program 1 times [2024-01-29 14:21:18,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:18,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659769897] [2024-01-29 14:21:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:18,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:18,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:18,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:18,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659769897] [2024-01-29 14:21:18,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659769897] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:18,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:18,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 14:21:18,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815118558] [2024-01-29 14:21:18,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:18,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:21:18,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:18,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:21:18,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:21:18,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 83 [2024-01-29 14:21:18,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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) [2024-01-29 14:21:18,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:18,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 83 [2024-01-29 14:21:18,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:18,625 INFO L124 PetriNetUnfolderBase]: 1405/2714 cut-off events. [2024-01-29 14:21:18,626 INFO L125 PetriNetUnfolderBase]: For 698/910 co-relation queries the response was YES. [2024-01-29 14:21:18,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5581 conditions, 2714 events. 1405/2714 cut-off events. For 698/910 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 19853 event pairs, 611 based on Foata normal form. 434/3081 useless extension candidates. Maximal degree in co-relation 5565. Up to 2050 conditions per place. [2024-01-29 14:21:18,640 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 39 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-01-29 14:21:18,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 68 transitions, 255 flow [2024-01-29 14:21:18,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:21:18,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:21:18,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-01-29 14:21:18,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6506024096385542 [2024-01-29 14:21:18,642 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 168 flow. Second operand 4 states and 216 transitions. [2024-01-29 14:21:18,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 68 transitions, 255 flow [2024-01-29 14:21:18,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 68 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:21:18,644 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 149 flow [2024-01-29 14:21:18,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-01-29 14:21:18,644 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -18 predicate places. [2024-01-29 14:21:18,645 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 149 flow [2024-01-29 14:21:18,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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) [2024-01-29 14:21:18,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:18,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:18,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-29 14:21:18,645 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-29 14:21:18,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:18,646 INFO L85 PathProgramCache]: Analyzing trace with hash 22950087, now seen corresponding path program 1 times [2024-01-29 14:21:18,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:18,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944170647] [2024-01-29 14:21:18,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:18,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:18,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:18,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944170647] [2024-01-29 14:21:18,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944170647] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:18,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:18,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 14:21:18,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046352839] [2024-01-29 14:21:18,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:18,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:21:18,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:18,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:21:18,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:21:18,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 83 [2024-01-29 14:21:18,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 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) [2024-01-29 14:21:18,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:18,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 83 [2024-01-29 14:21:18,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:19,068 INFO L124 PetriNetUnfolderBase]: 1657/3065 cut-off events. [2024-01-29 14:21:19,068 INFO L125 PetriNetUnfolderBase]: For 598/784 co-relation queries the response was YES. [2024-01-29 14:21:19,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6459 conditions, 3065 events. 1657/3065 cut-off events. For 598/784 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 21767 event pairs, 243 based on Foata normal form. 130/3126 useless extension candidates. Maximal degree in co-relation 6442. Up to 1890 conditions per place. [2024-01-29 14:21:19,080 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 51 selfloop transitions, 6 changer transitions 2/84 dead transitions. [2024-01-29 14:21:19,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 84 transitions, 335 flow [2024-01-29 14:21:19,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:21:19,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:21:19,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 224 transitions. [2024-01-29 14:21:19,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6746987951807228 [2024-01-29 14:21:19,082 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 149 flow. Second operand 4 states and 224 transitions. [2024-01-29 14:21:19,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 84 transitions, 335 flow [2024-01-29 14:21:19,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 84 transitions, 331 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:21:19,084 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 186 flow [2024-01-29 14:21:19,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2024-01-29 14:21:19,085 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -15 predicate places. [2024-01-29 14:21:19,085 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 186 flow [2024-01-29 14:21:19,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 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) [2024-01-29 14:21:19,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:19,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:19,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-29 14:21:19,086 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-29 14:21:19,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:19,086 INFO L85 PathProgramCache]: Analyzing trace with hash -843412312, now seen corresponding path program 1 times [2024-01-29 14:21:19,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:19,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291772117] [2024-01-29 14:21:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:19,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:19,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:19,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:19,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291772117] [2024-01-29 14:21:19,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291772117] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:19,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:19,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:21:19,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521806095] [2024-01-29 14:21:19,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:19,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:21:19,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:19,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:21:19,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:21:19,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 83 [2024-01-29 14:21:19,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 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) [2024-01-29 14:21:19,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:19,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 83 [2024-01-29 14:21:19,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:19,238 INFO L124 PetriNetUnfolderBase]: 305/1183 cut-off events. [2024-01-29 14:21:19,239 INFO L125 PetriNetUnfolderBase]: For 302/302 co-relation queries the response was YES. [2024-01-29 14:21:19,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2130 conditions, 1183 events. 305/1183 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8621 event pairs, 122 based on Foata normal form. 74/1204 useless extension candidates. Maximal degree in co-relation 2111. Up to 305 conditions per place. [2024-01-29 14:21:19,243 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 32 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-01-29 14:21:19,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 73 transitions, 291 flow [2024-01-29 14:21:19,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:21:19,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:21:19,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 207 transitions. [2024-01-29 14:21:19,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8313253012048193 [2024-01-29 14:21:19,244 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 186 flow. Second operand 3 states and 207 transitions. [2024-01-29 14:21:19,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 73 transitions, 291 flow [2024-01-29 14:21:19,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 73 transitions, 282 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-29 14:21:19,247 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 189 flow [2024-01-29 14:21:19,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-01-29 14:21:19,248 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -14 predicate places. [2024-01-29 14:21:19,248 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 189 flow [2024-01-29 14:21:19,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 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) [2024-01-29 14:21:19,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:19,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:19,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-29 14:21:19,249 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-29 14:21:19,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:19,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1695408620, now seen corresponding path program 1 times [2024-01-29 14:21:19,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:19,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695747772] [2024-01-29 14:21:19,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:19,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:19,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:19,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695747772] [2024-01-29 14:21:19,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695747772] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:19,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:19,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:21:19,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855373724] [2024-01-29 14:21:19,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:19,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:21:19,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:19,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:21:19,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:21:19,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 83 [2024-01-29 14:21:19,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 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) [2024-01-29 14:21:19,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:19,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 83 [2024-01-29 14:21:19,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:19,473 INFO L124 PetriNetUnfolderBase]: 599/1482 cut-off events. [2024-01-29 14:21:19,474 INFO L125 PetriNetUnfolderBase]: For 546/546 co-relation queries the response was YES. [2024-01-29 14:21:19,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3110 conditions, 1482 events. 599/1482 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 9663 event pairs, 178 based on Foata normal form. 34/1482 useless extension candidates. Maximal degree in co-relation 3091. Up to 587 conditions per place. [2024-01-29 14:21:19,477 INFO L140 encePairwiseOnDemand]: 75/83 looper letters, 45 selfloop transitions, 7 changer transitions 10/84 dead transitions. [2024-01-29 14:21:19,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 84 transitions, 378 flow [2024-01-29 14:21:19,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:21:19,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:21:19,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 226 transitions. [2024-01-29 14:21:19,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6807228915662651 [2024-01-29 14:21:19,479 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 189 flow. Second operand 4 states and 226 transitions. [2024-01-29 14:21:19,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 84 transitions, 378 flow [2024-01-29 14:21:19,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 84 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-29 14:21:19,481 INFO L231 Difference]: Finished difference. Result has 74 places, 56 transitions, 200 flow [2024-01-29 14:21:19,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=74, PETRI_TRANSITIONS=56} [2024-01-29 14:21:19,482 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -13 predicate places. [2024-01-29 14:21:19,482 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 56 transitions, 200 flow [2024-01-29 14:21:19,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 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) [2024-01-29 14:21:19,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:19,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:19,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-29 14:21:19,483 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-29 14:21:19,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:19,483 INFO L85 PathProgramCache]: Analyzing trace with hash -519008048, now seen corresponding path program 1 times [2024-01-29 14:21:19,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:19,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635240517] [2024-01-29 14:21:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:19,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:19,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:19,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635240517] [2024-01-29 14:21:19,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635240517] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:19,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:19,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-29 14:21:19,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324153090] [2024-01-29 14:21:19,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:19,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-29 14:21:19,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:19,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-29 14:21:19,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-29 14:21:19,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 83 [2024-01-29 14:21:19,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 56 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-01-29 14:21:19,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:19,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 83 [2024-01-29 14:21:19,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:19,601 INFO L124 PetriNetUnfolderBase]: 278/822 cut-off events. [2024-01-29 14:21:19,601 INFO L125 PetriNetUnfolderBase]: For 801/801 co-relation queries the response was YES. [2024-01-29 14:21:19,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1713 conditions, 822 events. 278/822 cut-off events. For 801/801 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4954 event pairs, 142 based on Foata normal form. 24/816 useless extension candidates. Maximal degree in co-relation 1692. Up to 437 conditions per place. [2024-01-29 14:21:19,604 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 32 selfloop transitions, 3 changer transitions 11/69 dead transitions. [2024-01-29 14:21:19,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 307 flow [2024-01-29 14:21:19,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-29 14:21:19,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-29 14:21:19,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2024-01-29 14:21:19,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6907630522088354 [2024-01-29 14:21:19,606 INFO L175 Difference]: Start difference. First operand has 74 places, 56 transitions, 200 flow. Second operand 3 states and 172 transitions. [2024-01-29 14:21:19,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 69 transitions, 307 flow [2024-01-29 14:21:19,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 69 transitions, 307 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-29 14:21:19,607 INFO L231 Difference]: Finished difference. Result has 71 places, 51 transitions, 177 flow [2024-01-29 14:21:19,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=71, PETRI_TRANSITIONS=51} [2024-01-29 14:21:19,608 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -16 predicate places. [2024-01-29 14:21:19,608 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 51 transitions, 177 flow [2024-01-29 14:21:19,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-01-29 14:21:19,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:19,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:19,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-29 14:21:19,609 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err6ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-29 14:21:19,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:19,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1662320970, now seen corresponding path program 1 times [2024-01-29 14:21:19,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:19,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314415079] [2024-01-29 14:21:19,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:19,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:19,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:19,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:19,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314415079] [2024-01-29 14:21:19,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314415079] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:19,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:19,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:21:19,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590670361] [2024-01-29 14:21:19,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:19,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:21:19,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:19,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:21:19,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:21:19,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 83 [2024-01-29 14:21:19,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 51 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:19,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:19,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 83 [2024-01-29 14:21:19,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:19,752 INFO L124 PetriNetUnfolderBase]: 289/765 cut-off events. [2024-01-29 14:21:19,752 INFO L125 PetriNetUnfolderBase]: For 594/594 co-relation queries the response was YES. [2024-01-29 14:21:19,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 765 events. 289/765 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4162 event pairs, 97 based on Foata normal form. 4/754 useless extension candidates. Maximal degree in co-relation 1625. Up to 433 conditions per place. [2024-01-29 14:21:19,755 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 42 selfloop transitions, 4 changer transitions 2/67 dead transitions. [2024-01-29 14:21:19,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 307 flow [2024-01-29 14:21:19,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:21:19,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:21:19,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 211 transitions. [2024-01-29 14:21:19,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6355421686746988 [2024-01-29 14:21:19,756 INFO L175 Difference]: Start difference. First operand has 71 places, 51 transitions, 177 flow. Second operand 4 states and 211 transitions. [2024-01-29 14:21:19,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 307 flow [2024-01-29 14:21:19,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 299 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-29 14:21:19,758 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 166 flow [2024-01-29 14:21:19,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2024-01-29 14:21:19,758 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -19 predicate places. [2024-01-29 14:21:19,759 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 166 flow [2024-01-29 14:21:19,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:19,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:19,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:19,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-29 14:21:19,759 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err6ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-29 14:21:19,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:19,760 INFO L85 PathProgramCache]: Analyzing trace with hash 51860289, now seen corresponding path program 1 times [2024-01-29 14:21:19,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:19,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451411427] [2024-01-29 14:21:19,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:19,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-29 14:21:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-29 14:21:19,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-29 14:21:19,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451411427] [2024-01-29 14:21:19,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451411427] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-29 14:21:19,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-29 14:21:19,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-29 14:21:19,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022897484] [2024-01-29 14:21:19,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-29 14:21:19,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-29 14:21:19,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-29 14:21:19,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-29 14:21:19,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-29 14:21:19,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2024-01-29 14:21:19,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:19,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-29 14:21:19,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2024-01-29 14:21:19,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-29 14:21:19,897 INFO L124 PetriNetUnfolderBase]: 277/741 cut-off events. [2024-01-29 14:21:19,897 INFO L125 PetriNetUnfolderBase]: For 462/462 co-relation queries the response was YES. [2024-01-29 14:21:19,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1593 conditions, 741 events. 277/741 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3957 event pairs, 67 based on Foata normal form. 4/731 useless extension candidates. Maximal degree in co-relation 1571. Up to 355 conditions per place. [2024-01-29 14:21:19,900 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 43 selfloop transitions, 5 changer transitions 2/69 dead transitions. [2024-01-29 14:21:19,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 316 flow [2024-01-29 14:21:19,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-29 14:21:19,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-29 14:21:19,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2024-01-29 14:21:19,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.608433734939759 [2024-01-29 14:21:19,901 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 166 flow. Second operand 4 states and 202 transitions. [2024-01-29 14:21:19,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 69 transitions, 316 flow [2024-01-29 14:21:19,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 308 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-29 14:21:19,903 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 174 flow [2024-01-29 14:21:19,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2024-01-29 14:21:19,903 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -17 predicate places. [2024-01-29 14:21:19,903 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 174 flow [2024-01-29 14:21:19,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-29 14:21:19,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-29 14:21:19,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:19,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-29 14:21:19,904 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err6ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-29 14:21:19,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-29 14:21:19,905 INFO L85 PathProgramCache]: Analyzing trace with hash 745437818, now seen corresponding path program 1 times [2024-01-29 14:21:19,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-29 14:21:19,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335324921] [2024-01-29 14:21:19,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-29 14:21:19,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-29 14:21:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 14:21:19,922 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-29 14:21:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-29 14:21:19,965 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-29 14:21:19,965 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-29 14:21:19,966 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err6ASSERT_VIOLATIONERROR_FUNCTION (50 of 51 remaining) [2024-01-29 14:21:19,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 51 remaining) [2024-01-29 14:21:19,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 51 remaining) [2024-01-29 14:21:19,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 51 remaining) [2024-01-29 14:21:19,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 51 remaining) [2024-01-29 14:21:19,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 51 remaining) [2024-01-29 14:21:19,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 51 remaining) [2024-01-29 14:21:19,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 51 remaining) [2024-01-29 14:21:19,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 51 remaining) [2024-01-29 14:21:19,968 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 51 remaining) [2024-01-29 14:21:19,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 51 remaining) [2024-01-29 14:21:19,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 51 remaining) [2024-01-29 14:21:19,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 51 remaining) [2024-01-29 14:21:19,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 51 remaining) [2024-01-29 14:21:19,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 51 remaining) [2024-01-29 14:21:19,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 51 remaining) [2024-01-29 14:21:19,969 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 51 remaining) [2024-01-29 14:21:19,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err7ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 51 remaining) [2024-01-29 14:21:19,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err4ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 51 remaining) [2024-01-29 14:21:19,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err8ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 51 remaining) [2024-01-29 14:21:19,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err5ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 51 remaining) [2024-01-29 14:21:19,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err9ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 51 remaining) [2024-01-29 14:21:19,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err6ASSERT_VIOLATIONERROR_FUNCTION (28 of 51 remaining) [2024-01-29 14:21:19,970 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err10ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 51 remaining) [2024-01-29 14:21:19,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 51 remaining) [2024-01-29 14:21:19,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 51 remaining) [2024-01-29 14:21:19,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 51 remaining) [2024-01-29 14:21:19,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 51 remaining) [2024-01-29 14:21:19,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 51 remaining) [2024-01-29 14:21:19,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 51 remaining) [2024-01-29 14:21:19,971 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 51 remaining) [2024-01-29 14:21:19,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 51 remaining) [2024-01-29 14:21:19,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 51 remaining) [2024-01-29 14:21:19,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 51 remaining) [2024-01-29 14:21:19,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 51 remaining) [2024-01-29 14:21:19,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 51 remaining) [2024-01-29 14:21:19,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 51 remaining) [2024-01-29 14:21:19,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 51 remaining) [2024-01-29 14:21:19,972 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 51 remaining) [2024-01-29 14:21:19,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 51 remaining) [2024-01-29 14:21:19,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 51 remaining) [2024-01-29 14:21:19,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 51 remaining) [2024-01-29 14:21:19,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 51 remaining) [2024-01-29 14:21:19,973 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 51 remaining) [2024-01-29 14:21:19,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 51 remaining) [2024-01-29 14:21:19,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err7ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 51 remaining) [2024-01-29 14:21:19,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err4ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 51 remaining) [2024-01-29 14:21:19,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 51 remaining) [2024-01-29 14:21:19,974 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err5ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 51 remaining) [2024-01-29 14:21:19,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err9ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 51 remaining) [2024-01-29 14:21:19,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err10ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 51 remaining) [2024-01-29 14:21:19,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-29 14:21:19,975 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-29 14:21:19,980 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-29 14:21:19,980 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-29 14:21:20,010 INFO L503 ceAbstractionStarter]: Automizer considered 24 witness invariants [2024-01-29 14:21:20,010 INFO L504 ceAbstractionStarter]: WitnessConsidered=24 [2024-01-29 14:21:20,011 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 02:21:20 BasicIcfg [2024-01-29 14:21:20,011 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-29 14:21:20,011 INFO L158 Benchmark]: Toolchain (without parser) took 4994.77ms. Allocated memory was 142.6MB in the beginning and 383.8MB in the end (delta: 241.2MB). Free memory was 83.1MB in the beginning and 97.8MB in the end (delta: -14.7MB). Peak memory consumption was 229.1MB. Max. memory is 16.1GB. [2024-01-29 14:21:20,011 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 142.6MB. Free memory is still 77.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-29 14:21:20,011 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 142.6MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-29 14:21:20,012 INFO L158 Benchmark]: CACSL2BoogieTranslator took 473.59ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 83.1MB in the beginning and 139.5MB in the end (delta: -56.4MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2024-01-29 14:21:20,012 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.51ms. Allocated memory is still 176.2MB. Free memory was 139.5MB in the beginning and 137.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-29 14:21:20,012 INFO L158 Benchmark]: Boogie Preprocessor took 105.49ms. Allocated memory is still 176.2MB. Free memory was 137.4MB in the beginning and 135.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-29 14:21:20,012 INFO L158 Benchmark]: RCFGBuilder took 428.57ms. Allocated memory is still 176.2MB. Free memory was 135.3MB in the beginning and 105.9MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-01-29 14:21:20,013 INFO L158 Benchmark]: TraceAbstraction took 3925.57ms. Allocated memory was 176.2MB in the beginning and 383.8MB in the end (delta: 207.6MB). Free memory was 105.9MB in the beginning and 97.8MB in the end (delta: 8.1MB). Peak memory consumption was 215.7MB. Max. memory is 16.1GB. [2024-01-29 14:21:20,014 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 142.6MB. Free memory is still 77.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 142.6MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 473.59ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 83.1MB in the beginning and 139.5MB in the end (delta: -56.4MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.51ms. Allocated memory is still 176.2MB. Free memory was 139.5MB in the beginning and 137.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 105.49ms. Allocated memory is still 176.2MB. Free memory was 137.4MB in the beginning and 135.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 428.57ms. Allocated memory is still 176.2MB. Free memory was 135.3MB in the beginning and 105.9MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3925.57ms. Allocated memory was 176.2MB in the beginning and 383.8MB in the end (delta: 207.6MB). Free memory was 105.9MB in the beginning and 97.8MB in the end (delta: 8.1MB). Peak memory consumption was 215.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L730] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[data],IntegerLiteral[0]]]] [L731] 0 pthread_t t1, t2, t3; VAL [data=0, mutex={3:0}, t1={7:0}, t2={5:0}, t3={6:0}] [L732] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[data],IntegerLiteral[0]]]] [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}, t1={7:0}, t2={5:0}, t3={6:0}] [L706] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, data=0, mutex={3:0}] [L707] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, data=0, mutex={3:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, t1={7:0}, t2={5:0}, t3={6:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, t1={7:0}, t2={5:0}, t3={6:0}] [L707] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[data]]]] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L708] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[data]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L708] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L713] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L714] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[data]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L714] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] [L714] 2 data+=2 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L715] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L715] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[2],IdentifierExpression[data]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L720] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[data]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] COND TRUE 3 data >= 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L722] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPNEQ,IdentifierExpression[data],IntegerLiteral[0]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L722] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[3],IdentifierExpression[data]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L722] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L722] 3 reach_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 706]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 708]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 708]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 709]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 716]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 725]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 725]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 725]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 730]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 734]: 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 7 procedures, 151 locations, 51 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: 3.8s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 689 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 472 mSDsluCounter, 66 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 128 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1019 IncrementalHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 128 mSolverCounterUnsat, 50 mSDtfsCounter, 1019 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=8, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 214 NumberOfCodeBlocks, 214 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 166 ConstructedInterpolants, 0 QuantifiedInterpolants, 402 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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! [2024-01-29 14:21:20,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with 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