./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/queue_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/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_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- 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 21:06:48,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:06:48,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:06:48,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:06:48,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:06:48,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:06:48,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:06:48,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:06:48,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:06:48,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:06:48,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:06:48,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:06:48,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:06:48,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:06:48,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:06:48,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:06:48,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:06:48,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:06:48,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:06:48,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:06:48,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:06:48,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:06:48,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:06:48,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:06:48,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:06:48,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:06:48,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:06:48,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:06:48,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:06:48,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:06:48,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:06:48,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:06:48,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:06:48,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:06:48,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:06:48,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:06:48,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:06:48,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:06:48,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:06:48,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:06:48,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:06:48,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 21:06:48,589 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:06:48,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:06:48,590 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:06:48,590 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:06:48,591 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:06:48,592 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:06:48,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:06:48,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:06:48,593 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:06:48,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:06:48,593 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:06:48,594 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:06:48,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:06:48,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:06:48,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:06:48,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:06:48,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:06:48,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:06:48,595 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 21:06:48,596 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:06:48,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:06:48,596 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:06:48,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:06:48,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:06:48,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:06:48,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:06:48,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:06:48,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:06:48,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:06:48,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:06:48,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:06:48,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:06:48,599 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:06:48,599 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:06:48,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:06:48,600 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_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2022-11-02 21:06:48,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:06:48,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:06:48,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:06:48,975 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:06:48,976 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:06:48,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread/queue_longest.i [2022-11-02 21:06:49,078 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/bin/uautomizer-Dbtcem3rbc/data/364f62001/5bf51286862b449cbdf5736fcf4198d8/FLAG5eb724454 [2022-11-02 21:06:49,853 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:06:49,854 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/sv-benchmarks/c/pthread/queue_longest.i [2022-11-02 21:06:49,870 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/bin/uautomizer-Dbtcem3rbc/data/364f62001/5bf51286862b449cbdf5736fcf4198d8/FLAG5eb724454 [2022-11-02 21:06:50,084 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/bin/uautomizer-Dbtcem3rbc/data/364f62001/5bf51286862b449cbdf5736fcf4198d8 [2022-11-02 21:06:50,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:06:50,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:06:50,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:06:50,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:06:50,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:06:50,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:06:50" (1/1) ... [2022-11-02 21:06:50,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19357a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:50, skipping insertion in model container [2022-11-02 21:06:50,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:06:50" (1/1) ... [2022-11-02 21:06:50,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:06:50,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:06:50,763 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_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2022-11-02 21:06:50,775 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_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2022-11-02 21:06:50,782 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_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2022-11-02 21:06:50,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:06:50,799 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:06:50,860 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_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2022-11-02 21:06:50,863 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_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2022-11-02 21:06:50,866 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_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2022-11-02 21:06:50,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:06:50,936 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:06:50,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:50 WrapperNode [2022-11-02 21:06:50,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:06:50,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:06:50,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:06:50,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:06:50,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:50" (1/1) ... [2022-11-02 21:06:51,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:50" (1/1) ... [2022-11-02 21:06:51,067 INFO L138 Inliner]: procedures = 274, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 483 [2022-11-02 21:06:51,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:06:51,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:06:51,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:06:51,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:06:51,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:50" (1/1) ... [2022-11-02 21:06:51,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:50" (1/1) ... [2022-11-02 21:06:51,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:50" (1/1) ... [2022-11-02 21:06:51,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:50" (1/1) ... [2022-11-02 21:06:51,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:50" (1/1) ... [2022-11-02 21:06:51,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:50" (1/1) ... [2022-11-02 21:06:51,196 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:50" (1/1) ... [2022-11-02 21:06:51,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:50" (1/1) ... [2022-11-02 21:06:51,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:06:51,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:06:51,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:06:51,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:06:51,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:50" (1/1) ... [2022-11-02 21:06:51,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:06:51,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:06:51,251 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:06:51,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f45d6daa-41a3-4022-8a22-e5a3abe4ae53/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:06:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-02 21:06:51,315 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-02 21:06:51,315 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-02 21:06:51,315 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-02 21:06:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:06:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:06:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:06:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:06:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 21:06:51,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:06:51,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:06:51,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:06:51,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:06:51,320 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 21:06:51,604 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:06:51,606 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:06:52,770 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:06:52,791 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:06:52,792 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 21:06:52,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:06:52 BoogieIcfgContainer [2022-11-02 21:06:52,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:06:52,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:06:52,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:06:52,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:06:52,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:06:50" (1/3) ... [2022-11-02 21:06:52,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2005a41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:06:52, skipping insertion in model container [2022-11-02 21:06:52,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:50" (2/3) ... [2022-11-02 21:06:52,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2005a41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:06:52, skipping insertion in model container [2022-11-02 21:06:52,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:06:52" (3/3) ... [2022-11-02 21:06:52,819 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2022-11-02 21:06:52,833 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:06:52,846 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:06:52,846 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2022-11-02 21:06:52,846 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:06:53,176 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 21:06:53,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 547 places, 555 transitions, 1126 flow [2022-11-02 21:06:53,596 INFO L130 PetriNetUnfolder]: 15/553 cut-off events. [2022-11-02 21:06:53,597 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 21:06:53,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 553 events. 15/553 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 795 event pairs, 0 based on Foata normal form. 0/494 useless extension candidates. Maximal degree in co-relation 421. Up to 2 conditions per place. [2022-11-02 21:06:53,619 INFO L82 GeneralOperation]: Start removeDead. Operand has 547 places, 555 transitions, 1126 flow [2022-11-02 21:06:53,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 535 places, 543 transitions, 1095 flow [2022-11-02 21:06:53,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:06:53,666 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;@63dadd66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:06:53,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2022-11-02 21:06:53,673 INFO L130 PetriNetUnfolder]: 0/34 cut-off events. [2022-11-02 21:06:53,674 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 21:06:53,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:53,675 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] [2022-11-02 21:06:53,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2022-11-02 21:06:53,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:53,684 INFO L85 PathProgramCache]: Analyzing trace with hash 513904802, now seen corresponding path program 1 times [2022-11-02 21:06:53,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:53,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832482746] [2022-11-02 21:06:53,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:53,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:53,983 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 21:06:53,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:53,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832482746] [2022-11-02 21:06:53,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832482746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:53,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:53,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:06:53,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169759106] [2022-11-02 21:06:53,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:54,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:54,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:54,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:54,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:54,058 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 527 out of 555 [2022-11-02 21:06:54,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 543 transitions, 1095 flow. Second operand has 3 states, 3 states have (on average 528.3333333333334) internal successors, (1585), 3 states have internal predecessors, (1585), 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 21:06:54,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:54,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 527 of 555 [2022-11-02 21:06:54,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:54,691 INFO L130 PetriNetUnfolder]: 59/1327 cut-off events. [2022-11-02 21:06:54,691 INFO L131 PetriNetUnfolder]: For 32/33 co-relation queries the response was YES. [2022-11-02 21:06:54,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 1327 events. 59/1327 cut-off events. For 32/33 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5619 event pairs, 27 based on Foata normal form. 23/1185 useless extension candidates. Maximal degree in co-relation 1149. Up to 79 conditions per place. [2022-11-02 21:06:54,714 INFO L137 encePairwiseOnDemand]: 547/555 looper letters, 15 selfloop transitions, 2 changer transitions 0/532 dead transitions. [2022-11-02 21:06:54,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 532 transitions, 1107 flow [2022-11-02 21:06:54,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:54,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:06:54,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1604 transitions. [2022-11-02 21:06:54,744 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9633633633633634 [2022-11-02 21:06:54,745 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1604 transitions. [2022-11-02 21:06:54,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1604 transitions. [2022-11-02 21:06:54,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:54,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1604 transitions. [2022-11-02 21:06:54,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 534.6666666666666) internal successors, (1604), 3 states have internal predecessors, (1604), 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 21:06:54,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 555.0) internal successors, (2220), 4 states have internal predecessors, (2220), 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 21:06:54,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 555.0) internal successors, (2220), 4 states have internal predecessors, (2220), 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 21:06:54,782 INFO L175 Difference]: Start difference. First operand has 535 places, 543 transitions, 1095 flow. Second operand 3 states and 1604 transitions. [2022-11-02 21:06:54,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 532 transitions, 1107 flow [2022-11-02 21:06:54,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 532 transitions, 1102 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 21:06:54,816 INFO L231 Difference]: Finished difference. Result has 528 places, 532 transitions, 1072 flow [2022-11-02 21:06:54,819 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=555, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1072, PETRI_PLACES=528, PETRI_TRANSITIONS=532} [2022-11-02 21:06:54,823 INFO L287 CegarLoopForPetriNet]: 535 programPoint places, -7 predicate places. [2022-11-02 21:06:54,824 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 532 transitions, 1072 flow [2022-11-02 21:06:54,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 528.3333333333334) internal successors, (1585), 3 states have internal predecessors, (1585), 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 21:06:54,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:54,826 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] [2022-11-02 21:06:54,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:06:54,827 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2022-11-02 21:06:54,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:54,828 INFO L85 PathProgramCache]: Analyzing trace with hash -628617836, now seen corresponding path program 1 times [2022-11-02 21:06:54,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:54,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45889924] [2022-11-02 21:06:54,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:54,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:54,984 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 21:06:54,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:54,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45889924] [2022-11-02 21:06:54,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45889924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:54,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:54,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:06:54,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943168264] [2022-11-02 21:06:54,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:54,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:54,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:54,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:54,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:54,991 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 527 out of 555 [2022-11-02 21:06:54,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 532 transitions, 1072 flow. Second operand has 3 states, 3 states have (on average 528.3333333333334) internal successors, (1585), 3 states have internal predecessors, (1585), 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 21:06:54,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:54,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 527 of 555 [2022-11-02 21:06:54,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:55,681 INFO L130 PetriNetUnfolder]: 71/1704 cut-off events. [2022-11-02 21:06:55,682 INFO L131 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2022-11-02 21:06:55,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 1704 events. 71/1704 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 6906 event pairs, 27 based on Foata normal form. 0/1491 useless extension candidates. Maximal degree in co-relation 1762. Up to 85 conditions per place. [2022-11-02 21:06:55,709 INFO L137 encePairwiseOnDemand]: 552/555 looper letters, 15 selfloop transitions, 2 changer transitions 0/531 dead transitions. [2022-11-02 21:06:55,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 531 transitions, 1104 flow [2022-11-02 21:06:55,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:55,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:06:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1599 transitions. [2022-11-02 21:06:55,715 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9603603603603603 [2022-11-02 21:06:55,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1599 transitions. [2022-11-02 21:06:55,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1599 transitions. [2022-11-02 21:06:55,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:55,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1599 transitions. [2022-11-02 21:06:55,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 533.0) internal successors, (1599), 3 states have internal predecessors, (1599), 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 21:06:55,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 555.0) internal successors, (2220), 4 states have internal predecessors, (2220), 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 21:06:55,727 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 555.0) internal successors, (2220), 4 states have internal predecessors, (2220), 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 21:06:55,728 INFO L175 Difference]: Start difference. First operand has 528 places, 532 transitions, 1072 flow. Second operand 3 states and 1599 transitions. [2022-11-02 21:06:55,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 531 transitions, 1104 flow [2022-11-02 21:06:55,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 531 transitions, 1100 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 21:06:55,740 INFO L231 Difference]: Finished difference. Result has 527 places, 531 transitions, 1070 flow [2022-11-02 21:06:55,741 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=555, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1070, PETRI_PLACES=527, PETRI_TRANSITIONS=531} [2022-11-02 21:06:55,743 INFO L287 CegarLoopForPetriNet]: 535 programPoint places, -8 predicate places. [2022-11-02 21:06:55,744 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 531 transitions, 1070 flow [2022-11-02 21:06:55,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 528.3333333333334) internal successors, (1585), 3 states have internal predecessors, (1585), 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 21:06:55,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:55,745 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] [2022-11-02 21:06:55,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:06:55,746 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2022-11-02 21:06:55,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:55,746 INFO L85 PathProgramCache]: Analyzing trace with hash -568710566, now seen corresponding path program 1 times [2022-11-02 21:06:55,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:55,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976946733] [2022-11-02 21:06:55,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:55,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:56,391 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 21:06:56,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:56,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976946733] [2022-11-02 21:06:56,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976946733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:56,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:56,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:06:56,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217379756] [2022-11-02 21:06:56,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:56,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:06:56,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:56,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:06:56,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:06:56,399 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 555 [2022-11-02 21:06:56,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 531 transitions, 1070 flow. Second operand has 6 states, 6 states have (on average 320.5) internal successors, (1923), 6 states have internal predecessors, (1923), 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 21:06:56,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:56,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 555 [2022-11-02 21:06:56,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand