./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/singleton.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races 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_01495d48-0a9f-4150-a7a8-a119e88cd5ab/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01495d48-0a9f-4150-a7a8-a119e88cd5ab/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_01495d48-0a9f-4150-a7a8-a119e88cd5ab/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01495d48-0a9f-4150-a7a8-a119e88cd5ab/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/singleton.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01495d48-0a9f-4150-a7a8-a119e88cd5ab/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_01495d48-0a9f-4150-a7a8-a119e88cd5ab/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 ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f --- 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 20:36:46,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:36:46,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:36:46,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:36:46,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:36:46,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:36:46,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:36:46,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:36:46,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:36:46,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:36:46,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:36:46,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:36:46,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:36:46,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:36:46,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:36:46,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:36:46,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:36:46,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:36:46,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:36:46,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:36:46,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:36:46,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:36:46,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:36:46,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:36:46,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:36:46,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:36:46,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:36:46,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:36:46,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:36:46,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:36:46,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:36:46,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:36:46,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:36:46,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:36:46,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:36:46,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:36:46,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:36:46,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:36:46,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:36:46,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:36:46,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:36:46,877 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01495d48-0a9f-4150-a7a8-a119e88cd5ab/bin/uautomizer-Dbtcem3rbc/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-02 20:36:46,897 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:36:46,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:36:46,898 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:36:46,898 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:36:46,899 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:36:46,899 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:36:46,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:36:46,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:36:46,900 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:36:46,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:36:46,900 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:36:46,901 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:36:46,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:36:46,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:36:46,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:36:46,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:36:46,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:36:46,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:36:46,902 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-02 20:36:46,902 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:36:46,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:36:46,902 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:36:46,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:36:46,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:36:46,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:36:46,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:36:46,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:36:46,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:36:46,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:36:46,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:36:46,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:36:46,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:36:46,904 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:36:46,904 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:36:46,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:36:46,905 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_01495d48-0a9f-4150-a7a8-a119e88cd5ab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01495d48-0a9f-4150-a7a8-a119e88cd5ab/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f [2022-11-02 20:36:47,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:36:47,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:36:47,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:36:47,200 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:36:47,200 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:36:47,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01495d48-0a9f-4150-a7a8-a119e88cd5ab/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread/singleton.i [2022-11-02 20:36:47,281 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01495d48-0a9f-4150-a7a8-a119e88cd5ab/bin/uautomizer-Dbtcem3rbc/data/7df029804/f4e41a16efca401d9be3e4c59da533a8/FLAG76ec08030 [2022-11-02 20:36:47,789 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:36:47,790 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01495d48-0a9f-4150-a7a8-a119e88cd5ab/sv-benchmarks/c/pthread/singleton.i [2022-11-02 20:36:47,804 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01495d48-0a9f-4150-a7a8-a119e88cd5ab/bin/uautomizer-Dbtcem3rbc/data/7df029804/f4e41a16efca401d9be3e4c59da533a8/FLAG76ec08030 [2022-11-02 20:36:48,056 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01495d48-0a9f-4150-a7a8-a119e88cd5ab/bin/uautomizer-Dbtcem3rbc/data/7df029804/f4e41a16efca401d9be3e4c59da533a8 [2022-11-02 20:36:48,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:36:48,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:36:48,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:36:48,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:36:48,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:36:48,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:36:48" (1/1) ... [2022-11-02 20:36:48,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@797a0861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:48, skipping insertion in model container [2022-11-02 20:36:48,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:36:48" (1/1) ... [2022-11-02 20:36:48,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:36:48,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:36:48,367 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-02 20:36:48,690 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_01495d48-0a9f-4150-a7a8-a119e88cd5ab/sv-benchmarks/c/pthread/singleton.i[55547,55560] [2022-11-02 20:36:48,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:36:48,744 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:36:48,771 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-02 20:36:48,801 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_01495d48-0a9f-4150-a7a8-a119e88cd5ab/sv-benchmarks/c/pthread/singleton.i[55547,55560] [2022-11-02 20:36:48,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:36:48,900 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:36:48,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:48 WrapperNode [2022-11-02 20:36:48,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:36:48,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:36:48,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:36:48,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:36:48,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:48" (1/1) ... [2022-11-02 20:36:48,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:48" (1/1) ... [2022-11-02 20:36:48,964 INFO L138 Inliner]: procedures = 325, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2022-11-02 20:36:48,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:36:48,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:36:48,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:36:48,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:36:48,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:48" (1/1) ... [2022-11-02 20:36:48,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:48" (1/1) ... [2022-11-02 20:36:48,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:48" (1/1) ... [2022-11-02 20:36:48,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:48" (1/1) ... [2022-11-02 20:36:48,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:48" (1/1) ... [2022-11-02 20:36:48,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:48" (1/1) ... [2022-11-02 20:36:49,012 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:48" (1/1) ... [2022-11-02 20:36:49,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:48" (1/1) ... [2022-11-02 20:36:49,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:36:49,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:36:49,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:36:49,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:36:49,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:48" (1/1) ... [2022-11-02 20:36:49,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:36:49,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01495d48-0a9f-4150-a7a8-a119e88cd5ab/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:36:49,062 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01495d48-0a9f-4150-a7a8-a119e88cd5ab/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:36:49,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01495d48-0a9f-4150-a7a8-a119e88cd5ab/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:36:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:36:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:36:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:36:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:36:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:36:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-11-02 20:36:49,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-11-02 20:36:49,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:36:49,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:36:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:36:49,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:36:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:36:49,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:36:49,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:36:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:36:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:36:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:36:49,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:36:49,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:36:49,104 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 20:36:49,364 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:36:49,366 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:36:49,820 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:36:49,868 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:36:49,868 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:36:49,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:36:49 BoogieIcfgContainer [2022-11-02 20:36:49,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:36:49,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:36:49,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:36:49,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:36:49,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:36:48" (1/3) ... [2022-11-02 20:36:49,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1040a538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:36:49, skipping insertion in model container [2022-11-02 20:36:49,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:36:48" (2/3) ... [2022-11-02 20:36:49,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1040a538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:36:49, skipping insertion in model container [2022-11-02 20:36:49,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:36:49" (3/3) ... [2022-11-02 20:36:49,891 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton.i [2022-11-02 20:36:49,900 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:36:49,910 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:36:49,910 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-11-02 20:36:49,910 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:36:50,054 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2022-11-02 20:36:50,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 272 transitions, 651 flow [2022-11-02 20:36:50,217 INFO L130 PetriNetUnfolder]: 6/185 cut-off events. [2022-11-02 20:36:50,217 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-02 20:36:50,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 185 events. 6/185 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2022-11-02 20:36:50,223 INFO L82 GeneralOperation]: Start removeDead. Operand has 282 places, 272 transitions, 651 flow [2022-11-02 20:36:50,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 168 transitions, 387 flow [2022-11-02 20:36:50,243 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:36:50,254 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;@843724e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:36:50,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-02 20:36:50,273 INFO L130 PetriNetUnfolder]: 0/32 cut-off events. [2022-11-02 20:36:50,273 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:36:50,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:36:50,275 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] [2022-11-02 20:36:50,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-02 20:36:50,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:50,281 INFO L85 PathProgramCache]: Analyzing trace with hash -59342021, now seen corresponding path program 1 times [2022-11-02 20:36:50,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:50,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855698162] [2022-11-02 20:36:50,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:50,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:51,103 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 20:36:51,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:51,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855698162] [2022-11-02 20:36:51,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855698162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:51,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:51,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:36:51,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715060092] [2022-11-02 20:36:51,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:51,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:36:51,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:51,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:36:51,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:36:51,191 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 274 [2022-11-02 20:36:51,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 168 transitions, 387 flow. Second operand has 6 states, 6 states have (on average 161.66666666666666) internal successors, (970), 6 states have internal predecessors, (970), 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 20:36:51,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:36:51,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 274 [2022-11-02 20:36:51,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:36:54,592 INFO L130 PetriNetUnfolder]: 6956/11018 cut-off events. [2022-11-02 20:36:54,593 INFO L131 PetriNetUnfolder]: For 548/592 co-relation queries the response was YES. [2022-11-02 20:36:54,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21683 conditions, 11018 events. 6956/11018 cut-off events. For 548/592 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 66598 event pairs, 2259 based on Foata normal form. 5/10088 useless extension candidates. Maximal degree in co-relation 21627. Up to 7336 conditions per place. [2022-11-02 20:36:54,738 INFO L137 encePairwiseOnDemand]: 256/274 looper letters, 245 selfloop transitions, 21 changer transitions 0/363 dead transitions. [2022-11-02 20:36:54,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 363 transitions, 1492 flow [2022-11-02 20:36:54,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:36:54,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:36:54,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1267 transitions. [2022-11-02 20:36:54,766 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7706812652068127 [2022-11-02 20:36:54,767 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1267 transitions. [2022-11-02 20:36:54,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1267 transitions. [2022-11-02 20:36:54,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:36:54,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1267 transitions. [2022-11-02 20:36:54,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.16666666666666) internal successors, (1267), 6 states have internal predecessors, (1267), 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 20:36:54,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 274.0) internal successors, (1918), 7 states have internal predecessors, (1918), 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 20:36:54,801 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 274.0) internal successors, (1918), 7 states have internal predecessors, (1918), 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 20:36:54,802 INFO L175 Difference]: Start difference. First operand has 182 places, 168 transitions, 387 flow. Second operand 6 states and 1267 transitions. [2022-11-02 20:36:54,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 363 transitions, 1492 flow [2022-11-02 20:36:54,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 363 transitions, 1336 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-02 20:36:54,833 INFO L231 Difference]: Finished difference. Result has 172 places, 180 transitions, 479 flow [2022-11-02 20:36:54,835 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=479, PETRI_PLACES=172, PETRI_TRANSITIONS=180} [2022-11-02 20:36:54,839 INFO L287 CegarLoopForPetriNet]: 182 programPoint places, -10 predicate places. [2022-11-02 20:36:54,839 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 180 transitions, 479 flow [2022-11-02 20:36:54,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.66666666666666) internal successors, (970), 6 states have internal predecessors, (970), 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 20:36:54,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:36:54,841 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] [2022-11-02 20:36:54,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:36:54,841 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-02 20:36:54,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:54,842 INFO L85 PathProgramCache]: Analyzing trace with hash 21299019, now seen corresponding path program 1 times [2022-11-02 20:36:54,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:54,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201522533] [2022-11-02 20:36:54,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:54,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:54,899 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 20:36:54,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:54,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201522533] [2022-11-02 20:36:54,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201522533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:54,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:54,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:36:54,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817705266] [2022-11-02 20:36:54,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:54,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:36:54,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:54,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:36:54,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:36:54,905 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 274 [2022-11-02 20:36:54,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 180 transitions, 479 flow. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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 20:36:54,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:36:54,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 274 [2022-11-02 20:36:54,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:36:55,365 INFO L130 PetriNetUnfolder]: 778/2150 cut-off events. [2022-11-02 20:36:55,365 INFO L131 PetriNetUnfolder]: For 1158/1340 co-relation queries the response was YES. [2022-11-02 20:36:55,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4645 conditions, 2150 events. 778/2150 cut-off events. For 1158/1340 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 13600 event pairs, 306 based on Foata normal form. 0/1960 useless extension candidates. Maximal degree in co-relation 2971. Up to 941 conditions per place. [2022-11-02 20:36:55,398 INFO L137 encePairwiseOnDemand]: 271/274 looper letters, 42 selfloop transitions, 2 changer transitions 0/179 dead transitions. [2022-11-02 20:36:55,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 179 transitions, 565 flow [2022-11-02 20:36:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:36:55,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:36:55,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2022-11-02 20:36:55,401 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8418491484184915 [2022-11-02 20:36:55,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 692 transitions. [2022-11-02 20:36:55,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 692 transitions. [2022-11-02 20:36:55,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:36:55,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 692 transitions. [2022-11-02 20:36:55,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 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 20:36:55,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 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 20:36:55,408 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 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 20:36:55,408 INFO L175 Difference]: Start difference. First operand has 172 places, 180 transitions, 479 flow. Second operand 3 states and 692 transitions. [2022-11-02 20:36:55,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 179 transitions, 565 flow [2022-11-02 20:36:55,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 179 transitions, 565 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:36:55,419 INFO L231 Difference]: Finished difference. Result has 173 places, 179 transitions, 481 flow [2022-11-02 20:36:55,420 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=481, PETRI_PLACES=173, PETRI_TRANSITIONS=179} [2022-11-02 20:36:55,421 INFO L287 CegarLoopForPetriNet]: 182 programPoint places, -9 predicate places. [2022-11-02 20:36:55,421 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 179 transitions, 481 flow [2022-11-02 20:36:55,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 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 20:36:55,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:36:55,422 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] [2022-11-02 20:36:55,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:36:55,422 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread0Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-02 20:36:55,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:55,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1560345132, now seen corresponding path program 1 times [2022-11-02 20:36:55,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:55,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27923415] [2022-11-02 20:36:55,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:55,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:55,824 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 20:36:55,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:55,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27923415] [2022-11-02 20:36:55,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27923415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:55,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:55,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:36:55,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885599010] [2022-11-02 20:36:55,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:55,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:36:55,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:55,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:36:55,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:36:55,831 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 274 [2022-11-02 20:36:55,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 179 transitions, 481 flow. Second operand has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 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 20:36:55,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:36:55,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 274 [2022-11-02 20:36:55,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:36:57,952 INFO L130 PetriNetUnfolder]: 6392/10591 cut-off events. [2022-11-02 20:36:57,952 INFO L131 PetriNetUnfolder]: For 10529/10565 co-relation queries the response was YES. [2022-11-02 20:36:57,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29262 conditions, 10591 events. 6392/10591 cut-off events. For 10529/10565 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 63681 event pairs, 2715 based on Foata normal form. 24/10036 useless extension candidates. Maximal degree in co-relation 24378. Up to 8947 conditions per place. [2022-11-02 20:36:58,067 INFO L137 encePairwiseOnDemand]: 265/274 looper letters, 108 selfloop transitions, 24 changer transitions 0/227 dead transitions. [2022-11-02 20:36:58,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 227 transitions, 988 flow [2022-11-02 20:36:58,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:36:58,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:36:58,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1063 transitions. [2022-11-02 20:36:58,078 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6465936739659367 [2022-11-02 20:36:58,078 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1063 transitions. [2022-11-02 20:36:58,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1063 transitions. [2022-11-02 20:36:58,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:36:58,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1063 transitions. [2022-11-02 20:36:58,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 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 20:36:58,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 274.0) internal successors, (1918), 7 states have internal predecessors, (1918), 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 20:36:58,092 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 274.0) internal successors, (1918), 7 states have internal predecessors, (1918), 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 20:36:58,093 INFO L175 Difference]: Start difference. First operand has 173 places, 179 transitions, 481 flow. Second operand 6 states and 1063 transitions. [2022-11-02 20:36:58,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 227 transitions, 988 flow [2022-11-02 20:36:58,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 227 transitions, 984 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:36:58,115 INFO L231 Difference]: Finished difference. Result has 176 places, 198 transitions, 696 flow [2022-11-02 20:36:58,116 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=696, PETRI_PLACES=176, PETRI_TRANSITIONS=198} [2022-11-02 20:36:58,119 INFO L287 CegarLoopForPetriNet]: 182 programPoint places, -6 predicate places. [2022-11-02 20:36:58,119 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 198 transitions, 696 flow [2022-11-02 20:36:58,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 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 20:36:58,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:36:58,120 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] [2022-11-02 20:36:58,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:36:58,121 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-02 20:36:58,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:36:58,122 INFO L85 PathProgramCache]: Analyzing trace with hash -953857843, now seen corresponding path program 1 times [2022-11-02 20:36:58,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:36:58,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877621162] [2022-11-02 20:36:58,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:36:58,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:36:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:36:59,390 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 20:36:59,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:36:59,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877621162] [2022-11-02 20:36:59,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877621162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:36:59,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:36:59,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:36:59,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149902587] [2022-11-02 20:36:59,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:36:59,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:36:59,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:59,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:36:59,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:36:59,400 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 274 [2022-11-02 20:36:59,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 198 transitions, 696 flow. Second operand has 12 states, 12 states have (on average 135.83333333333334) internal successors, (1630), 12 states have internal predecessors, (1630), 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 20:36:59,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:36:59,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 274 [2022-11-02 20:36:59,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:37:03,859 INFO L130 PetriNetUnfolder]: 9736/16108 cut-off events. [2022-11-02 20:37:03,859 INFO L131 PetriNetUnfolder]: For 21089/21122 co-relation queries the response was YES. [2022-11-02 20:37:03,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51132 conditions, 16108 events. 9736/16108 cut-off events. For 21089/21122 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 105026 event pairs, 3502 based on Foata normal form. 246/15364 useless extension candidates. Maximal degree in co-relation 25640. Up to 7720 conditions per place. [2022-11-02 20:37:04,010 INFO L137 encePairwiseOnDemand]: 256/274 looper letters, 477 selfloop transitions, 92 changer transitions 0/643 dead transitions. [2022-11-02 20:37:04,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 643 transitions, 3353 flow [2022-11-02 20:37:04,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:37:04,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:37:04,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2901 transitions. [2022-11-02 20:37:04,021 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5881995133819952 [2022-11-02 20:37:04,021 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2901 transitions. [2022-11-02 20:37:04,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2901 transitions. [2022-11-02 20:37:04,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:37:04,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2901 transitions. [2022-11-02 20:37:04,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 161.16666666666666) internal successors, (2901), 18 states have internal predecessors, (2901), 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 20:37:04,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 274.0) internal successors, (5206), 19 states have internal predecessors, (5206), 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 20:37:04,049 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 274.0) internal successors, (5206), 19 states have internal predecessors, (5206), 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 20:37:04,049 INFO L175 Difference]: Start difference. First operand has 176 places, 198 transitions, 696 flow. Second operand 18 states and 2901 transitions. [2022-11-02 20:37:04,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 643 transitions, 3353 flow [2022-11-02 20:37:04,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 643 transitions, 3202 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:37:04,152 INFO L231 Difference]: Finished difference. Result has 204 places, 269 transitions, 1562 flow [2022-11-02 20:37:04,152 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1562, PETRI_PLACES=204, PETRI_TRANSITIONS=269} [2022-11-02 20:37:04,154 INFO L287 CegarLoopForPetriNet]: 182 programPoint places, 22 predicate places. [2022-11-02 20:37:04,154 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 269 transitions, 1562 flow [2022-11-02 20:37:04,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 135.83333333333334) internal successors, (1630), 12 states have internal predecessors, (1630), 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 20:37:04,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:37:04,155 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] [2022-11-02 20:37:04,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:37:04,155 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-02 20:37:04,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:04,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1899085895, now seen corresponding path program 2 times [2022-11-02 20:37:04,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:04,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082606398] [2022-11-02 20:37:04,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:04,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:04,864 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 20:37:04,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:04,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082606398] [2022-11-02 20:37:04,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082606398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:04,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:37:04,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:37:04,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526573382] [2022-11-02 20:37:04,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:04,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:37:04,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:04,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:37:04,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:37:04,871 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 274 [2022-11-02 20:37:04,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 269 transitions, 1562 flow. Second operand has 10 states, 10 states have (on average 151.9) internal successors, (1519), 10 states have internal predecessors, (1519), 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 20:37:04,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:37:04,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 274 [2022-11-02 20:37:04,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:37:09,576 INFO L130 PetriNetUnfolder]: 11963/20463 cut-off events. [2022-11-02 20:37:09,576 INFO L131 PetriNetUnfolder]: For 51211/51261 co-relation queries the response was YES. [2022-11-02 20:37:09,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71839 conditions, 20463 events. 11963/20463 cut-off events. For 51211/51261 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 141560 event pairs, 4135 based on Foata normal form. 247/19468 useless extension candidates. Maximal degree in co-relation 68615. Up to 7595 conditions per place. [2022-11-02 20:37:09,945 INFO L137 encePairwiseOnDemand]: 264/274 looper letters, 449 selfloop transitions, 45 changer transitions 0/585 dead transitions. [2022-11-02 20:37:09,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 585 transitions, 3872 flow [2022-11-02 20:37:09,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:37:09,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-02 20:37:09,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2729 transitions. [2022-11-02 20:37:09,954 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6224908759124088 [2022-11-02 20:37:09,954 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2729 transitions. [2022-11-02 20:37:09,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2729 transitions. [2022-11-02 20:37:09,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:37:09,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2729 transitions. [2022-11-02 20:37:09,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 170.5625) internal successors, (2729), 16 states have internal predecessors, (2729), 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 20:37:09,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 274.0) internal successors, (4658), 17 states have internal predecessors, (4658), 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 20:37:09,975 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 274.0) internal successors, (4658), 17 states have internal predecessors, (4658), 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 20:37:09,975 INFO L175 Difference]: Start difference. First operand has 204 places, 269 transitions, 1562 flow. Second operand 16 states and 2729 transitions. [2022-11-02 20:37:09,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 585 transitions, 3872 flow [2022-11-02 20:37:10,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 585 transitions, 3852 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-11-02 20:37:10,226 INFO L231 Difference]: Finished difference. Result has 228 places, 301 transitions, 1958 flow [2022-11-02 20:37:10,226 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1958, PETRI_PLACES=228, PETRI_TRANSITIONS=301} [2022-11-02 20:37:10,229 INFO L287 CegarLoopForPetriNet]: 182 programPoint places, 46 predicate places. [2022-11-02 20:37:10,229 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 301 transitions, 1958 flow [2022-11-02 20:37:10,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 151.9) internal successors, (1519), 10 states have internal predecessors, (1519), 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 20:37:10,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:37:10,231 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] [2022-11-02 20:37:10,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:37:10,231 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-02 20:37:10,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:10,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1514701539, now seen corresponding path program 3 times [2022-11-02 20:37:10,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:10,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978090441] [2022-11-02 20:37:10,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:10,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:11,299 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 20:37:11,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:11,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978090441] [2022-11-02 20:37:11,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978090441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:11,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:37:11,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:37:11,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188826887] [2022-11-02 20:37:11,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:11,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:37:11,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:11,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:37:11,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:37:11,307 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 274 [2022-11-02 20:37:11,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 301 transitions, 1958 flow. Second operand has 12 states, 12 states have (on average 135.83333333333334) internal successors, (1630), 12 states have internal predecessors, (1630), 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 20:37:11,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:37:11,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 274 [2022-11-02 20:37:11,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:37:17,792 INFO L130 PetriNetUnfolder]: 13882/23856 cut-off events. [2022-11-02 20:37:17,792 INFO L131 PetriNetUnfolder]: For 87074/87151 co-relation queries the response was YES. [2022-11-02 20:37:17,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91166 conditions, 23856 events. 13882/23856 cut-off events. For 87074/87151 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 169870 event pairs, 5122 based on Foata normal form. 273/22672 useless extension candidates. Maximal degree in co-relation 87628. Up to 12873 conditions per place. [2022-11-02 20:37:18,074 INFO L137 encePairwiseOnDemand]: 257/274 looper letters, 492 selfloop transitions, 117 changer transitions 0/683 dead transitions. [2022-11-02 20:37:18,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 683 transitions, 4826 flow [2022-11-02 20:37:18,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:37:18,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-02 20:37:18,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2424 transitions. [2022-11-02 20:37:18,080 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5897810218978102 [2022-11-02 20:37:18,081 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2424 transitions. [2022-11-02 20:37:18,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2424 transitions. [2022-11-02 20:37:18,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:37:18,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2424 transitions. [2022-11-02 20:37:18,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 161.6) internal successors, (2424), 15 states have internal predecessors, (2424), 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 20:37:18,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 274.0) internal successors, (4384), 16 states have internal predecessors, (4384), 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 20:37:18,098 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 274.0) internal successors, (4384), 16 states have internal predecessors, (4384), 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 20:37:18,098 INFO L175 Difference]: Start difference. First operand has 228 places, 301 transitions, 1958 flow. Second operand 15 states and 2424 transitions. [2022-11-02 20:37:18,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 683 transitions, 4826 flow [2022-11-02 20:37:18,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 683 transitions, 4729 flow, removed 38 selfloop flow, removed 2 redundant places. [2022-11-02 20:37:18,767 INFO L231 Difference]: Finished difference. Result has 252 places, 358 transitions, 3006 flow [2022-11-02 20:37:18,767 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3006, PETRI_PLACES=252, PETRI_TRANSITIONS=358} [2022-11-02 20:37:18,768 INFO L287 CegarLoopForPetriNet]: 182 programPoint places, 70 predicate places. [2022-11-02 20:37:18,768 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 358 transitions, 3006 flow [2022-11-02 20:37:18,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 135.83333333333334) internal successors, (1630), 12 states have internal predecessors, (1630), 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 20:37:18,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:37:18,770 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] [2022-11-02 20:37:18,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:37:18,771 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-02 20:37:18,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:18,775 INFO L85 PathProgramCache]: Analyzing trace with hash -251869406, now seen corresponding path program 1 times [2022-11-02 20:37:18,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:18,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840003741] [2022-11-02 20:37:18,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:18,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:19,400 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 20:37:19,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:19,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840003741] [2022-11-02 20:37:19,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840003741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:19,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:37:19,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:37:19,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307392259] [2022-11-02 20:37:19,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:19,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:37:19,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:19,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:37:19,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:37:19,411 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 274 [2022-11-02 20:37:19,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 358 transitions, 3006 flow. Second operand has 10 states, 10 states have (on average 151.9) internal successors, (1519), 10 states have internal predecessors, (1519), 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 20:37:19,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:37:19,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 274 [2022-11-02 20:37:19,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:37:28,756 INFO L130 PetriNetUnfolder]: 19927/34595 cut-off events. [2022-11-02 20:37:28,756 INFO L131 PetriNetUnfolder]: For 191974/192097 co-relation queries the response was YES. [2022-11-02 20:37:29,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140098 conditions, 34595 events. 19927/34595 cut-off events. For 191974/192097 co-relation queries the response was YES. Maximal size of possible extension queue 1093. Compared 266816 event pairs, 9372 based on Foata normal form. 293/32638 useless extension candidates. Maximal degree in co-relation 139526. Up to 16091 conditions per place. [2022-11-02 20:37:29,537 INFO L137 encePairwiseOnDemand]: 260/274 looper letters, 530 selfloop transitions, 108 changer transitions 0/740 dead transitions. [2022-11-02 20:37:29,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 740 transitions, 6457 flow [2022-11-02 20:37:29,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:37:29,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-02 20:37:29,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2627 transitions. [2022-11-02 20:37:29,546 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6391727493917275 [2022-11-02 20:37:29,546 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2627 transitions. [2022-11-02 20:37:29,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2627 transitions. [2022-11-02 20:37:29,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:37:29,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2627 transitions. [2022-11-02 20:37:29,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 175.13333333333333) internal successors, (2627), 15 states have internal predecessors, (2627), 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 20:37:29,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 274.0) internal successors, (4384), 16 states have internal predecessors, (4384), 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 20:37:29,582 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 274.0) internal successors, (4384), 16 states have internal predecessors, (4384), 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 20:37:29,582 INFO L175 Difference]: Start difference. First operand has 252 places, 358 transitions, 3006 flow. Second operand 15 states and 2627 transitions. [2022-11-02 20:37:29,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 740 transitions, 6457 flow [2022-11-02 20:37:30,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 740 transitions, 6256 flow, removed 35 selfloop flow, removed 2 redundant places. [2022-11-02 20:37:30,618 INFO L231 Difference]: Finished difference. Result has 274 places, 410 transitions, 3980 flow [2022-11-02 20:37:30,619 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=2898, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3980, PETRI_PLACES=274, PETRI_TRANSITIONS=410} [2022-11-02 20:37:30,620 INFO L287 CegarLoopForPetriNet]: 182 programPoint places, 92 predicate places. [2022-11-02 20:37:30,620 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 410 transitions, 3980 flow [2022-11-02 20:37:30,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 151.9) internal successors, (1519), 10 states have internal predecessors, (1519), 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 20:37:30,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:37:30,622 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] [2022-11-02 20:37:30,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:37:30,622 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-02 20:37:30,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:30,623 INFO L85 PathProgramCache]: Analyzing trace with hash 311269976, now seen corresponding path program 2 times [2022-11-02 20:37:30,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:30,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190709242] [2022-11-02 20:37:30,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:30,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:31,520 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 20:37:31,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:31,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190709242] [2022-11-02 20:37:31,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190709242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:31,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:37:31,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:37:31,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474628736] [2022-11-02 20:37:31,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:31,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:37:31,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:31,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:37:31,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:37:31,524 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 274 [2022-11-02 20:37:31,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 410 transitions, 3980 flow. Second operand has 12 states, 12 states have (on average 135.83333333333334) internal successors, (1630), 12 states have internal predecessors, (1630), 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 20:37:31,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:37:31,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 274 [2022-11-02 20:37:31,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:37:44,322 INFO L130 PetriNetUnfolder]: 25833/44844 cut-off events. [2022-11-02 20:37:44,322 INFO L131 PetriNetUnfolder]: For 253591/253857 co-relation queries the response was YES. [2022-11-02 20:37:44,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186032 conditions, 44844 events. 25833/44844 cut-off events. For 253591/253857 co-relation queries the response was YES. Maximal size of possible extension queue 1406. Compared 361525 event pairs, 10723 based on Foata normal form. 388/42406 useless extension candidates. Maximal degree in co-relation 184429. Up to 20119 conditions per place. [2022-11-02 20:37:45,029 INFO L137 encePairwiseOnDemand]: 257/274 looper letters, 625 selfloop transitions, 184 changer transitions 0/883 dead transitions. [2022-11-02 20:37:45,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 883 transitions, 8148 flow [2022-11-02 20:37:45,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:37:45,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:37:45,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3163 transitions. [2022-11-02 20:37:45,037 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5771897810218978 [2022-11-02 20:37:45,037 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3163 transitions. [2022-11-02 20:37:45,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3163 transitions. [2022-11-02 20:37:45,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:37:45,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3163 transitions. [2022-11-02 20:37:45,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 158.15) internal successors, (3163), 20 states have internal predecessors, (3163), 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 20:37:45,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 274.0) internal successors, (5754), 21 states have internal predecessors, (5754), 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 20:37:45,058 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 274.0) internal successors, (5754), 21 states have internal predecessors, (5754), 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 20:37:45,058 INFO L175 Difference]: Start difference. First operand has 274 places, 410 transitions, 3980 flow. Second operand 20 states and 3163 transitions. [2022-11-02 20:37:45,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 883 transitions, 8148 flow [2022-11-02 20:37:47,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 883 transitions, 8081 flow, removed 33 selfloop flow, removed 1 redundant places. [2022-11-02 20:37:47,661 INFO L231 Difference]: Finished difference. Result has 308 places, 480 transitions, 5635 flow [2022-11-02 20:37:47,662 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=3925, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5635, PETRI_PLACES=308, PETRI_TRANSITIONS=480} [2022-11-02 20:37:47,663 INFO L287 CegarLoopForPetriNet]: 182 programPoint places, 126 predicate places. [2022-11-02 20:37:47,663 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 480 transitions, 5635 flow [2022-11-02 20:37:47,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 135.83333333333334) internal successors, (1630), 12 states have internal predecessors, (1630), 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 20:37:47,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:37:47,664 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] [2022-11-02 20:37:47,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:37:47,665 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-02 20:37:47,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:47,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1987697669, now seen corresponding path program 4 times [2022-11-02 20:37:47,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:47,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601125022] [2022-11-02 20:37:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:47,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:48,177 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 20:37:48,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:48,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601125022] [2022-11-02 20:37:48,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601125022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:37:48,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:37:48,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:37:48,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554722515] [2022-11-02 20:37:48,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:37:48,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:37:48,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:48,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:37:48,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:37:48,181 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 274 [2022-11-02 20:37:48,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 480 transitions, 5635 flow. Second operand has 10 states, 10 states have (on average 151.9) internal successors, (1519), 10 states have internal predecessors, (1519), 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 20:37:48,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:37:48,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 274 [2022-11-02 20:37:48,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand