./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a1634bb3c8fd20e3116589f39b7439eb06d3d5864b5afee415eff1cf39cd7c4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:24:05,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:24:05,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:24:05,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:24:05,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:24:05,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:24:05,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:24:05,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:24:05,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:24:05,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:24:05,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:24:05,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:24:05,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:24:05,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:24:05,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:24:05,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:24:05,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:24:05,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:24:05,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:24:05,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:24:05,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:24:05,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:24:05,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:24:05,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:24:05,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:24:05,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:24:05,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:24:05,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:24:05,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:24:05,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:24:05,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:24:05,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:24:05,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:24:05,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:24:05,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:24:05,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:24:05,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:24:05,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:24:05,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:24:05,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:24:05,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:24:05,372 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:24:05,422 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:24:05,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:24:05,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:24:05,424 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:24:05,425 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:24:05,425 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:24:05,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:24:05,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:24:05,426 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:24:05,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:24:05,428 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:24:05,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:24:05,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:24:05,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:24:05,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:24:05,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:24:05,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:24:05,430 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:24:05,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:24:05,430 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:24:05,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:24:05,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:24:05,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:24:05,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:24:05,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:05,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:24:05,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:24:05,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:24:05,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:24:05,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:24:05,434 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:24:05,435 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:24:05,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:24:05,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a1634bb3c8fd20e3116589f39b7439eb06d3d5864b5afee415eff1cf39cd7c4 [2022-11-02 20:24:05,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:24:05,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:24:05,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:24:05,896 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:24:05,897 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:24:05,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-complex/workstealqueue_mutex-1.i [2022-11-02 20:24:05,983 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/data/4ca34df01/4b9f037a9dae4d4aa560512ca5edd62f/FLAGd4669f6fb [2022-11-02 20:24:06,932 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:24:06,933 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-1.i [2022-11-02 20:24:06,982 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/data/4ca34df01/4b9f037a9dae4d4aa560512ca5edd62f/FLAGd4669f6fb [2022-11-02 20:24:07,017 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/data/4ca34df01/4b9f037a9dae4d4aa560512ca5edd62f [2022-11-02 20:24:07,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:24:07,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:24:07,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:07,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:24:07,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:24:07,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:07" (1/1) ... [2022-11-02 20:24:07,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72048ef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:07, skipping insertion in model container [2022-11-02 20:24:07,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:07" (1/1) ... [2022-11-02 20:24:07,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:24:07,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:24:08,148 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-1.i[76469,76482] [2022-11-02 20:24:08,191 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-1.i[79042,79055] [2022-11-02 20:24:08,197 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-1.i[79451,79464] [2022-11-02 20:24:08,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:08,243 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:24:08,341 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-1.i[76469,76482] [2022-11-02 20:24:08,381 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-1.i[79042,79055] [2022-11-02 20:24:08,387 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/sv-benchmarks/c/pthread-complex/workstealqueue_mutex-1.i[79451,79464] [2022-11-02 20:24:08,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:08,593 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:24:08,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:08 WrapperNode [2022-11-02 20:24:08,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:08,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:24:08,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:24:08,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:24:08,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:08" (1/1) ... [2022-11-02 20:24:08,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:08" (1/1) ... [2022-11-02 20:24:08,775 INFO L138 Inliner]: procedures = 489, calls = 127, calls flagged for inlining = 45, calls inlined = 117, statements flattened = 1701 [2022-11-02 20:24:08,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:24:08,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:24:08,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:24:08,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:24:08,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:08" (1/1) ... [2022-11-02 20:24:08,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:08" (1/1) ... [2022-11-02 20:24:08,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:08" (1/1) ... [2022-11-02 20:24:08,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:08" (1/1) ... [2022-11-02 20:24:08,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:08" (1/1) ... [2022-11-02 20:24:08,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:08" (1/1) ... [2022-11-02 20:24:08,869 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:08" (1/1) ... [2022-11-02 20:24:08,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:08" (1/1) ... [2022-11-02 20:24:08,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:24:08,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:24:08,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:24:08,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:24:08,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:08" (1/1) ... [2022-11-02 20:24:08,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:08,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:08,976 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:24:08,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:24:09,035 INFO L130 BoogieDeclarations]: Found specification of procedure Stealer [2022-11-02 20:24:09,038 INFO L138 BoogieDeclarations]: Found implementation of procedure Stealer [2022-11-02 20:24:09,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:24:09,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:24:09,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:24:09,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:24:09,040 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 20:24:09,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:24:09,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:24:09,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:24:09,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:24:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:24:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:24:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:24:09,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:24:09,045 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:24:09,535 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:24:09,538 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:24:12,318 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:24:12,833 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:24:12,833 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-02 20:24:12,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:12 BoogieIcfgContainer [2022-11-02 20:24:12,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:24:12,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:24:12,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:24:12,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:24:12,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:24:07" (1/3) ... [2022-11-02 20:24:12,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22570c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:24:12, skipping insertion in model container [2022-11-02 20:24:12,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:08" (2/3) ... [2022-11-02 20:24:12,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22570c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:24:12, skipping insertion in model container [2022-11-02 20:24:12,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:12" (3/3) ... [2022-11-02 20:24:12,849 INFO L112 eAbstractionObserver]: Analyzing ICFG workstealqueue_mutex-1.i [2022-11-02 20:24:12,860 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:24:12,872 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:24:12,872 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-02 20:24:12,873 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:24:13,061 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-02 20:24:13,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1607 places, 1648 transitions, 3304 flow [2022-11-02 20:24:14,856 INFO L130 PetriNetUnfolder]: 81/3053 cut-off events. [2022-11-02 20:24:14,856 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:24:14,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3059 conditions, 3053 events. 81/3053 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 14096 event pairs, 0 based on Foata normal form. 0/2959 useless extension candidates. Maximal degree in co-relation 1558. Up to 4 conditions per place. [2022-11-02 20:24:14,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 1607 places, 1648 transitions, 3304 flow [2022-11-02 20:24:14,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1607 places, 1648 transitions, 3304 flow [2022-11-02 20:24:14,987 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:24:14,997 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1b903c40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:24:14,998 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-02 20:24:15,026 INFO L130 PetriNetUnfolder]: 11/170 cut-off events. [2022-11-02 20:24:15,026 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:24:15,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:15,027 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1] [2022-11-02 20:24:15,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-02 20:24:15,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:15,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2015664916, now seen corresponding path program 1 times [2022-11-02 20:24:15,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:15,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130405936] [2022-11-02 20:24:15,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:15,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:24:15,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:15,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130405936] [2022-11-02 20:24:15,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130405936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:15,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:15,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:24:15,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88995775] [2022-11-02 20:24:15,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:15,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:24:15,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:15,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:24:15,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:24:15,829 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 1537 out of 1648 [2022-11-02 20:24:15,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1607 places, 1648 transitions, 3304 flow. Second operand has 3 states, 3 states have (on average 1541.0) internal successors, (4623), 3 states have internal predecessors, (4623), 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) [2022-11-02 20:24:15,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:15,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1537 of 1648 [2022-11-02 20:24:15,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:24:24,691 INFO L130 PetriNetUnfolder]: 789/14659 cut-off events. [2022-11-02 20:24:24,691 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:24:24,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15859 conditions, 14659 events. 789/14659 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 129373 event pairs, 232 based on Foata normal form. 303/14658 useless extension candidates. Maximal degree in co-relation 15665. Up to 611 conditions per place. [2022-11-02 20:24:24,863 INFO L137 encePairwiseOnDemand]: 1614/1648 looper letters, 143 selfloop transitions, 12 changer transitions 9/1695 dead transitions. [2022-11-02 20:24:24,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1604 places, 1695 transitions, 3714 flow [2022-11-02 20:24:24,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:24:24,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:24:24,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4807 transitions. [2022-11-02 20:24:24,895 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9722896440129449 [2022-11-02 20:24:24,896 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 4807 transitions. [2022-11-02 20:24:24,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 4807 transitions. [2022-11-02 20:24:24,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:24:24,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 4807 transitions. [2022-11-02 20:24:24,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1602.3333333333333) internal successors, (4807), 3 states have internal predecessors, (4807), 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) [2022-11-02 20:24:24,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1648.0) internal successors, (6592), 4 states have internal predecessors, (6592), 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) [2022-11-02 20:24:24,952 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1648.0) internal successors, (6592), 4 states have internal predecessors, (6592), 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) [2022-11-02 20:24:24,955 INFO L175 Difference]: Start difference. First operand has 1607 places, 1648 transitions, 3304 flow. Second operand 3 states and 4807 transitions. [2022-11-02 20:24:24,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1604 places, 1695 transitions, 3714 flow [2022-11-02 20:24:24,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1604 places, 1695 transitions, 3714 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:24:25,009 INFO L231 Difference]: Finished difference. Result has 1605 places, 1624 transitions, 3310 flow [2022-11-02 20:24:25,014 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1648, PETRI_DIFFERENCE_MINUEND_FLOW=3262, PETRI_DIFFERENCE_MINUEND_PLACES=1602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3310, PETRI_PLACES=1605, PETRI_TRANSITIONS=1624} [2022-11-02 20:24:25,019 INFO L287 CegarLoopForPetriNet]: 1607 programPoint places, -2 predicate places. [2022-11-02 20:24:25,019 INFO L495 AbstractCegarLoop]: Abstraction has has 1605 places, 1624 transitions, 3310 flow [2022-11-02 20:24:25,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1541.0) internal successors, (4623), 3 states have internal predecessors, (4623), 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) [2022-11-02 20:24:25,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:25,024 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:25,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:24:25,025 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-02 20:24:25,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:25,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1595978401, now seen corresponding path program 1 times [2022-11-02 20:24:25,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:25,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932255345] [2022-11-02 20:24:25,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:25,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:25,481 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:24:25,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:25,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932255345] [2022-11-02 20:24:25,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932255345] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:24:25,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231645920] [2022-11-02 20:24:25,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:25,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:25,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:25,496 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:24:25,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:24:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:25,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:24:25,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:26,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:24:26,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:24:26,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:24:26,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231645920] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:24:26,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:24:26,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-02 20:24:26,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000424017] [2022-11-02 20:24:26,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:24:26,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:24:26,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:26,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:24:26,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:24:26,129 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 1536 out of 1648 [2022-11-02 20:24:26,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1605 places, 1624 transitions, 3310 flow. Second operand has 10 states, 10 states have (on average 1538.9) internal successors, (15389), 10 states have internal predecessors, (15389), 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) [2022-11-02 20:24:26,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:26,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1536 of 1648 [2022-11-02 20:24:26,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:24:33,801 INFO L130 PetriNetUnfolder]: 789/14664 cut-off events. [2022-11-02 20:24:33,801 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-02 20:24:33,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15957 conditions, 14664 events. 789/14664 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 129477 event pairs, 174 based on Foata normal form. 2/14385 useless extension candidates. Maximal degree in co-relation 15735. Up to 577 conditions per place. [2022-11-02 20:24:33,952 INFO L137 encePairwiseOnDemand]: 1627/1648 looper letters, 141 selfloop transitions, 26 changer transitions 2/1699 dead transitions. [2022-11-02 20:24:33,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1606 places, 1699 transitions, 3800 flow [2022-11-02 20:24:33,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:24:33,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:24:33,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13995 transitions. [2022-11-02 20:24:33,994 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9435679611650486 [2022-11-02 20:24:33,995 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 13995 transitions. [2022-11-02 20:24:33,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13995 transitions. [2022-11-02 20:24:34,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:24:34,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 13995 transitions. [2022-11-02 20:24:34,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 1555.0) internal successors, (13995), 9 states have internal predecessors, (13995), 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) [2022-11-02 20:24:34,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1648.0) internal successors, (16480), 10 states have internal predecessors, (16480), 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) [2022-11-02 20:24:34,107 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1648.0) internal successors, (16480), 10 states have internal predecessors, (16480), 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) [2022-11-02 20:24:34,107 INFO L175 Difference]: Start difference. First operand has 1605 places, 1624 transitions, 3310 flow. Second operand 9 states and 13995 transitions. [2022-11-02 20:24:34,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1606 places, 1699 transitions, 3800 flow [2022-11-02 20:24:34,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1605 places, 1699 transitions, 3788 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:24:34,160 INFO L231 Difference]: Finished difference. Result has 1608 places, 1634 transitions, 3424 flow [2022-11-02 20:24:34,163 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1648, PETRI_DIFFERENCE_MINUEND_FLOW=3298, PETRI_DIFFERENCE_MINUEND_PLACES=1597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3424, PETRI_PLACES=1608, PETRI_TRANSITIONS=1634} [2022-11-02 20:24:34,164 INFO L287 CegarLoopForPetriNet]: 1607 programPoint places, 1 predicate places. [2022-11-02 20:24:34,165 INFO L495 AbstractCegarLoop]: Abstraction has has 1608 places, 1634 transitions, 3424 flow [2022-11-02 20:24:34,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1538.9) internal successors, (15389), 10 states have internal predecessors, (15389), 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) [2022-11-02 20:24:34,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:34,172 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1] [2022-11-02 20:24:34,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:34,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:34,387 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-02 20:24:34,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:34,387 INFO L85 PathProgramCache]: Analyzing trace with hash -2006168325, now seen corresponding path program 2 times [2022-11-02 20:24:34,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:34,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064034546] [2022-11-02 20:24:34,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:34,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:24:35,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:35,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064034546] [2022-11-02 20:24:35,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064034546] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:24:35,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735659308] [2022-11-02 20:24:35,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:24:35,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:35,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:35,181 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:24:35,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:24:35,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:24:35,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:24:35,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:24:35,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:35,888 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:24:35,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:24:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:24:36,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735659308] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:24:36,038 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:24:36,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-11-02 20:24:36,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198327097] [2022-11-02 20:24:36,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:24:36,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:24:36,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:36,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:24:36,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:24:36,066 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 1536 out of 1648 [2022-11-02 20:24:36,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1608 places, 1634 transitions, 3424 flow. Second operand has 11 states, 11 states have (on average 1538.909090909091) internal successors, (16928), 11 states have internal predecessors, (16928), 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) [2022-11-02 20:24:36,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:36,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1536 of 1648 [2022-11-02 20:24:36,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:24:44,413 INFO L130 PetriNetUnfolder]: 745/16274 cut-off events. [2022-11-02 20:24:44,413 INFO L131 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2022-11-02 20:24:44,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17640 conditions, 16274 events. 745/16274 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 145932 event pairs, 420 based on Foata normal form. 1/15932 useless extension candidates. Maximal degree in co-relation 17439. Up to 523 conditions per place. [2022-11-02 20:24:44,535 INFO L137 encePairwiseOnDemand]: 1628/1648 looper letters, 143 selfloop transitions, 29 changer transitions 0/1702 dead transitions. [2022-11-02 20:24:44,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1619 places, 1702 transitions, 3922 flow [2022-11-02 20:24:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:24:44,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-02 20:24:44,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18605 transitions. [2022-11-02 20:24:44,576 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9407868122977346 [2022-11-02 20:24:44,577 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 18605 transitions. [2022-11-02 20:24:44,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 18605 transitions. [2022-11-02 20:24:44,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:24:44,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 18605 transitions. [2022-11-02 20:24:44,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 1550.4166666666667) internal successors, (18605), 12 states have internal predecessors, (18605), 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) [2022-11-02 20:24:44,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1648.0) internal successors, (21424), 13 states have internal predecessors, (21424), 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) [2022-11-02 20:24:44,680 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1648.0) internal successors, (21424), 13 states have internal predecessors, (21424), 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) [2022-11-02 20:24:44,681 INFO L175 Difference]: Start difference. First operand has 1608 places, 1634 transitions, 3424 flow. Second operand 12 states and 18605 transitions. [2022-11-02 20:24:44,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1619 places, 1702 transitions, 3922 flow [2022-11-02 20:24:44,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1618 places, 1702 transitions, 3898 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-02 20:24:44,725 INFO L231 Difference]: Finished difference. Result has 1622 places, 1638 transitions, 3517 flow [2022-11-02 20:24:44,729 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1648, PETRI_DIFFERENCE_MINUEND_FLOW=3402, PETRI_DIFFERENCE_MINUEND_PLACES=1607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3517, PETRI_PLACES=1622, PETRI_TRANSITIONS=1638} [2022-11-02 20:24:44,730 INFO L287 CegarLoopForPetriNet]: 1607 programPoint places, 15 predicate places. [2022-11-02 20:24:44,730 INFO L495 AbstractCegarLoop]: Abstraction has has 1622 places, 1638 transitions, 3517 flow [2022-11-02 20:24:44,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1538.909090909091) internal successors, (16928), 11 states have internal predecessors, (16928), 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) [2022-11-02 20:24:44,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:44,737 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1] [2022-11-02 20:24:44,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:44,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f401ae7-5345-4434-96b7-4a9a7c335ba5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:24:44,963 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-02 20:24:44,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:44,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2090627016, now seen corresponding path program 3 times [2022-11-02 20:24:44,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:44,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609211745] [2022-11-02 20:24:44,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:44,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:24:45,057 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:24:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:24:45,194 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:24:45,194 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:24:45,196 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2022-11-02 20:24:45,200 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-02 20:24:45,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-11-02 20:24:45,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-11-02 20:24:45,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-02 20:24:45,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-02 20:24:45,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:24:45,204 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1] [2022-11-02 20:24:45,207 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:24:45,207 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:24:45,403 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:24:45,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1754 places, 1798 transitions, 3614 flow [2022-11-02 20:24:47,507 INFO L130 PetriNetUnfolder]: 128/4653 cut-off events. [2022-11-02 20:24:47,508 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 20:24:47,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4667 conditions, 4653 events. 128/4653 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 26870 event pairs, 0 based on Foata normal form. 0/4505 useless extension candidates. Maximal degree in co-relation 3055. Up to 8 conditions per place. [2022-11-02 20:24:47,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 1754 places, 1798 transitions, 3614 flow [2022-11-02 20:24:47,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1754 places, 1798 transitions, 3614 flow [2022-11-02 20:24:47,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:24:47,623 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1b903c40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:24:47,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-02 20:24:47,651 INFO L130 PetriNetUnfolder]: 12/198 cut-off events. [2022-11-02 20:24:47,651 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-02 20:24:47,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:24:47,651 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:24:47,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-02 20:24:47,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:47,653 INFO L85 PathProgramCache]: Analyzing trace with hash 994168549, now seen corresponding path program 1 times [2022-11-02 20:24:47,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:47,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464678669] [2022-11-02 20:24:47,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:47,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:47,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:24:47,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464678669] [2022-11-02 20:24:47,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464678669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:47,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:47,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:24:47,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090270460] [2022-11-02 20:24:47,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:47,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:24:47,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:24:47,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:24:47,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:24:47,759 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 1718 out of 1798 [2022-11-02 20:24:47,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1754 places, 1798 transitions, 3614 flow. Second operand has 2 states, 2 states have (on average 1720.5) internal successors, (3441), 2 states have internal predecessors, (3441), 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) [2022-11-02 20:24:47,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:24:47,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1718 of 1798 [2022-11-02 20:24:47,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:25:06,672 INFO L130 PetriNetUnfolder]: 2814/48285 cut-off events. [2022-11-02 20:25:06,672 INFO L131 PetriNetUnfolder]: For 73/77 co-relation queries the response was YES. [2022-11-02 20:25:07,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51822 conditions, 48285 events. 2814/48285 cut-off events. For 73/77 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 626085 event pairs, 1964 based on Foata normal form. 1133/48345 useless extension candidates. Maximal degree in co-relation 9487. Up to 3491 conditions per place. [2022-11-02 20:25:07,433 INFO L137 encePairwiseOnDemand]: 1781/1798 looper letters, 58 selfloop transitions, 0 changer transitions 0/1776 dead transitions. [2022-11-02 20:25:07,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1750 places, 1776 transitions, 3686 flow [2022-11-02 20:25:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:25:07,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:25:07,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3511 transitions. [2022-11-02 20:25:07,442 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9763626251390434 [2022-11-02 20:25:07,443 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 3511 transitions. [2022-11-02 20:25:07,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 3511 transitions. [2022-11-02 20:25:07,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:25:07,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 3511 transitions. [2022-11-02 20:25:07,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 1755.5) internal successors, (3511), 2 states have internal predecessors, (3511), 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) [2022-11-02 20:25:07,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1798.0) internal successors, (5394), 3 states have internal predecessors, (5394), 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) [2022-11-02 20:25:07,463 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1798.0) internal successors, (5394), 3 states have internal predecessors, (5394), 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) [2022-11-02 20:25:07,463 INFO L175 Difference]: Start difference. First operand has 1754 places, 1798 transitions, 3614 flow. Second operand 2 states and 3511 transitions. [2022-11-02 20:25:07,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1750 places, 1776 transitions, 3686 flow [2022-11-02 20:25:07,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1750 places, 1776 transitions, 3686 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:25:07,503 INFO L231 Difference]: Finished difference. Result has 1750 places, 1776 transitions, 3570 flow [2022-11-02 20:25:07,506 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=1798, PETRI_DIFFERENCE_MINUEND_FLOW=3570, PETRI_DIFFERENCE_MINUEND_PLACES=1749, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1776, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=3570, PETRI_PLACES=1750, PETRI_TRANSITIONS=1776} [2022-11-02 20:25:07,509 INFO L287 CegarLoopForPetriNet]: 1754 programPoint places, -4 predicate places. [2022-11-02 20:25:07,509 INFO L495 AbstractCegarLoop]: Abstraction has has 1750 places, 1776 transitions, 3570 flow [2022-11-02 20:25:07,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1720.5) internal successors, (3441), 2 states have internal predecessors, (3441), 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) [2022-11-02 20:25:07,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:25:07,512 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:07,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:25:07,512 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-11-02 20:25:07,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:07,513 INFO L85 PathProgramCache]: Analyzing trace with hash -139702872, now seen corresponding path program 1 times [2022-11-02 20:25:07,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:07,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151051166] [2022-11-02 20:25:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:07,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:07,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:07,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:07,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151051166] [2022-11-02 20:25:07,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151051166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:07,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:07,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:25:07,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647936080] [2022-11-02 20:25:07,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:07,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:25:07,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:07,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:25:07,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:25:07,648 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 1680 out of 1798 [2022-11-02 20:25:07,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1750 places, 1776 transitions, 3570 flow. Second operand has 3 states, 3 states have (on average 1685.6666666666667) internal successors, (5057), 3 states have internal predecessors, (5057), 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) [2022-11-02 20:25:07,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:25:07,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1680 of 1798 [2022-11-02 20:25:07,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand