./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 dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c2f710-5a97-48e2-b522-549bf8ecc796/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c2f710-5a97-48e2-b522-549bf8ecc796/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c2f710-5a97-48e2-b522-549bf8ecc796/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c2f710-5a97-48e2-b522-549bf8ecc796/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/singleton.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c2f710-5a97-48e2-b522-549bf8ecc796/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c2f710-5a97-48e2-b522-549bf8ecc796/bin/uautomizer-J5u9QxTXDZ --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-dbf71c6-m [2022-10-17 10:13:41,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:13:41,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:13:41,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:13:41,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:13:41,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:13:41,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:13:41,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:13:41,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:13:41,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:13:41,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:13:41,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:13:41,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:13:41,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:13:41,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:13:41,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:13:41,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:13:41,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:13:41,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:13:41,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:13:41,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:13:41,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:13:41,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:13:41,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:13:41,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:13:41,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:13:41,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:13:41,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:13:41,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:13:41,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:13:41,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:13:41,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:13:41,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:13:41,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:13:41,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:13:41,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:13:41,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:13:41,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:13:41,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:13:41,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:13:41,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:13:41,779 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c2f710-5a97-48e2-b522-549bf8ecc796/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-10-17 10:13:41,834 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:13:41,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:13:41,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:13:41,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:13:41,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:13:41,837 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:13:41,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:13:41,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:13:41,839 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:13:41,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:13:41,840 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:13:41,840 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:13:41,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:13:41,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:13:41,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:13:41,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:13:41,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:13:41,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:13:41,842 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-10-17 10:13:41,842 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:13:41,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:13:41,842 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:13:41,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:13:41,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:13:41,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:13:41,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:13:41,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:13:41,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:13:41,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:13:41,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:13:41,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:13:41,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:13:41,845 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:13:41,846 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:13:41,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:13:41,846 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_31c2f710-5a97-48e2-b522-549bf8ecc796/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c2f710-5a97-48e2-b522-549bf8ecc796/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f [2022-10-17 10:13:42,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:13:42,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:13:42,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:13:42,152 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:13:42,153 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:13:42,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c2f710-5a97-48e2-b522-549bf8ecc796/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread/singleton.i [2022-10-17 10:13:42,222 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c2f710-5a97-48e2-b522-549bf8ecc796/bin/uautomizer-J5u9QxTXDZ/data/582b31736/05e50b03456b46088a2937906bc5e24d/FLAG57e1ab445 [2022-10-17 10:13:42,840 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:13:42,841 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c2f710-5a97-48e2-b522-549bf8ecc796/sv-benchmarks/c/pthread/singleton.i [2022-10-17 10:13:42,880 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c2f710-5a97-48e2-b522-549bf8ecc796/bin/uautomizer-J5u9QxTXDZ/data/582b31736/05e50b03456b46088a2937906bc5e24d/FLAG57e1ab445 [2022-10-17 10:13:43,085 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c2f710-5a97-48e2-b522-549bf8ecc796/bin/uautomizer-J5u9QxTXDZ/data/582b31736/05e50b03456b46088a2937906bc5e24d [2022-10-17 10:13:43,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:13:43,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:13:43,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:13:43,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:13:43,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:13:43,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:13:43" (1/1) ... [2022-10-17 10:13:43,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5815b925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:43, skipping insertion in model container [2022-10-17 10:13:43,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:13:43" (1/1) ... [2022-10-17 10:13:43,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:13:43,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:13:43,416 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-10-17 10:13:43,727 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_31c2f710-5a97-48e2-b522-549bf8ecc796/sv-benchmarks/c/pthread/singleton.i[55547,55560] [2022-10-17 10:13:43,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:13:43,757 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:13:43,772 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-10-17 10:13:43,792 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_31c2f710-5a97-48e2-b522-549bf8ecc796/sv-benchmarks/c/pthread/singleton.i[55547,55560] [2022-10-17 10:13:43,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:13:43,881 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:13:43,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:43 WrapperNode [2022-10-17 10:13:43,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:13:43,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:13:43,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:13:43,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:13:43,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:43" (1/1) ... [2022-10-17 10:13:43,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:43" (1/1) ... [2022-10-17 10:13:43,934 INFO L138 Inliner]: procedures = 325, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2022-10-17 10:13:43,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:13:43,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:13:43,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:13:43,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:13:43,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:43" (1/1) ... [2022-10-17 10:13:43,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:43" (1/1) ... [2022-10-17 10:13:43,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:43" (1/1) ... [2022-10-17 10:13:43,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:43" (1/1) ... [2022-10-17 10:13:43,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:43" (1/1) ... [2022-10-17 10:13:43,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:43" (1/1) ... [2022-10-17 10:13:43,984 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:43" (1/1) ... [2022-10-17 10:13:43,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:43" (1/1) ... [2022-10-17 10:13:43,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:13:43,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:13:43,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:13:43,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:13:43,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:43" (1/1) ... [2022-10-17 10:13:43,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:13:44,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c2f710-5a97-48e2-b522-549bf8ecc796/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:44,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c2f710-5a97-48e2-b522-549bf8ecc796/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:44,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31c2f710-5a97-48e2-b522-549bf8ecc796/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:13:44,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:13:44,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:13:44,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:13:44,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:13:44,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:13:44,069 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-10-17 10:13:44,069 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-10-17 10:13:44,069 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 10:13:44,070 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 10:13:44,070 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 10:13:44,070 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 10:13:44,070 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-10-17 10:13:44,070 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-10-17 10:13:44,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:13:44,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:13:44,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:13:44,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:13:44,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:13:44,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:13:44,073 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:13:44,215 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:13:44,217 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:13:44,590 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:13:44,638 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:13:44,639 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:13:44,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:13:44 BoogieIcfgContainer [2022-10-17 10:13:44,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:13:44,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:13:44,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:13:44,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:13:44,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:13:43" (1/3) ... [2022-10-17 10:13:44,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25aaa46a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:13:44, skipping insertion in model container [2022-10-17 10:13:44,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:43" (2/3) ... [2022-10-17 10:13:44,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25aaa46a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:13:44, skipping insertion in model container [2022-10-17 10:13:44,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:13:44" (3/3) ... [2022-10-17 10:13:44,652 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton.i [2022-10-17 10:13:44,661 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:13:44,671 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:13:44,672 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-10-17 10:13:44,672 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:13:44,932 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2022-10-17 10:13:44,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 272 transitions, 651 flow [2022-10-17 10:13:45,082 INFO L130 PetriNetUnfolder]: 6/185 cut-off events. [2022-10-17 10:13:45,082 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-10-17 10:13:45,089 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. [2022-10-17 10:13:45,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 282 places, 272 transitions, 651 flow [2022-10-17 10:13:45,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 168 transitions, 387 flow [2022-10-17 10:13:45,129 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:13:45,140 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;@49c03f29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:13:45,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-10-17 10:13:45,165 INFO L130 PetriNetUnfolder]: 0/32 cut-off events. [2022-10-17 10:13:45,165 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:13:45,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:13:45,167 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] [2022-10-17 10:13:45,169 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)] === [2022-10-17 10:13:45,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:45,176 INFO L85 PathProgramCache]: Analyzing trace with hash -59342021, now seen corresponding path program 1 times [2022-10-17 10:13:45,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:45,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401764573] [2022-10-17 10:13:45,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:45,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:46,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:13:46,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401764573] [2022-10-17 10:13:46,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401764573] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:13:46,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:13:46,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:13:46,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357634171] [2022-10-17 10:13:46,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:13:46,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:13:46,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:13:46,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:13:46,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:13:46,114 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 274 [2022-10-17 10:13:46,121 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) [2022-10-17 10:13:46,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:13:46,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 274 [2022-10-17 10:13:46,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:13:49,802 INFO L130 PetriNetUnfolder]: 6956/11018 cut-off events. [2022-10-17 10:13:49,802 INFO L131 PetriNetUnfolder]: For 548/592 co-relation queries the response was YES. [2022-10-17 10:13:49,858 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. [2022-10-17 10:13:49,976 INFO L137 encePairwiseOnDemand]: 256/274 looper letters, 245 selfloop transitions, 21 changer transitions 0/363 dead transitions. [2022-10-17 10:13:49,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 363 transitions, 1492 flow [2022-10-17 10:13:49,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:13:49,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:13:49,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1267 transitions. [2022-10-17 10:13:50,002 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7706812652068127 [2022-10-17 10:13:50,003 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1267 transitions. [2022-10-17 10:13:50,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1267 transitions. [2022-10-17 10:13:50,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:13:50,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1267 transitions. [2022-10-17 10:13:50,020 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) [2022-10-17 10:13:50,032 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) [2022-10-17 10:13:50,034 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) [2022-10-17 10:13:50,036 INFO L175 Difference]: Start difference. First operand has 182 places, 168 transitions, 387 flow. Second operand 6 states and 1267 transitions. [2022-10-17 10:13:50,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 363 transitions, 1492 flow [2022-10-17 10:13:50,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 363 transitions, 1336 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-10-17 10:13:50,072 INFO L231 Difference]: Finished difference. Result has 172 places, 180 transitions, 479 flow [2022-10-17 10:13:50,075 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} [2022-10-17 10:13:50,081 INFO L287 CegarLoopForPetriNet]: 182 programPoint places, -10 predicate places. [2022-10-17 10:13:50,081 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 180 transitions, 479 flow [2022-10-17 10:13:50,082 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) [2022-10-17 10:13:50,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:13:50,083 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] [2022-10-17 10:13:50,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:13:50,084 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-10-17 10:13:50,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:50,085 INFO L85 PathProgramCache]: Analyzing trace with hash 21299019, now seen corresponding path program 1 times [2022-10-17 10:13:50,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:50,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472263758] [2022-10-17 10:13:50,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:50,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:50,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:13:50,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472263758] [2022-10-17 10:13:50,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472263758] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:13:50,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:13:50,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:13:50,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300199417] [2022-10-17 10:13:50,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:13:50,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:13:50,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:13:50,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:13:50,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:13:50,192 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 274 [2022-10-17 10:13:50,193 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) [2022-10-17 10:13:50,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:13:50,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 274 [2022-10-17 10:13:50,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:13:50,768 INFO L130 PetriNetUnfolder]: 778/2150 cut-off events. [2022-10-17 10:13:50,768 INFO L131 PetriNetUnfolder]: For 1158/1340 co-relation queries the response was YES. [2022-10-17 10:13:50,780 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. [2022-10-17 10:13:50,796 INFO L137 encePairwiseOnDemand]: 271/274 looper letters, 42 selfloop transitions, 2 changer transitions 0/179 dead transitions. [2022-10-17 10:13:50,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 179 transitions, 565 flow [2022-10-17 10:13:50,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:13:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:13:50,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2022-10-17 10:13:50,800 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8418491484184915 [2022-10-17 10:13:50,800 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 692 transitions. [2022-10-17 10:13:50,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 692 transitions. [2022-10-17 10:13:50,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:13:50,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 692 transitions. [2022-10-17 10:13:50,803 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) [2022-10-17 10:13:50,806 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) [2022-10-17 10:13:50,808 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) [2022-10-17 10:13:50,808 INFO L175 Difference]: Start difference. First operand has 172 places, 180 transitions, 479 flow. Second operand 3 states and 692 transitions. [2022-10-17 10:13:50,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 179 transitions, 565 flow [2022-10-17 10:13:50,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 179 transitions, 565 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:13:50,822 INFO L231 Difference]: Finished difference. Result has 173 places, 179 transitions, 481 flow [2022-10-17 10:13:50,822 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} [2022-10-17 10:13:50,824 INFO L287 CegarLoopForPetriNet]: 182 programPoint places, -9 predicate places. [2022-10-17 10:13:50,824 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 179 transitions, 481 flow [2022-10-17 10:13:50,825 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) [2022-10-17 10:13:50,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:13:50,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:13:50,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:13:50,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread0Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-10-17 10:13:50,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:50,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1560345132, now seen corresponding path program 1 times [2022-10-17 10:13:50,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:50,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998010933] [2022-10-17 10:13:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:50,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:51,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:51,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:13:51,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998010933] [2022-10-17 10:13:51,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998010933] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:13:51,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:13:51,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:13:51,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19523974] [2022-10-17 10:13:51,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:13:51,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:13:51,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:13:51,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:13:51,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:13:51,275 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 274 [2022-10-17 10:13:51,277 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) [2022-10-17 10:13:51,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:13:51,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 274 [2022-10-17 10:13:51,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:13:53,974 INFO L130 PetriNetUnfolder]: 6392/10591 cut-off events. [2022-10-17 10:13:53,974 INFO L131 PetriNetUnfolder]: For 10529/10565 co-relation queries the response was YES. [2022-10-17 10:13:54,019 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. [2022-10-17 10:13:54,125 INFO L137 encePairwiseOnDemand]: 265/274 looper letters, 108 selfloop transitions, 24 changer transitions 0/227 dead transitions. [2022-10-17 10:13:54,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 227 transitions, 988 flow [2022-10-17 10:13:54,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:13:54,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:13:54,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1063 transitions. [2022-10-17 10:13:54,131 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6465936739659367 [2022-10-17 10:13:54,131 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1063 transitions. [2022-10-17 10:13:54,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1063 transitions. [2022-10-17 10:13:54,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:13:54,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1063 transitions. [2022-10-17 10:13:54,136 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) [2022-10-17 10:13:54,141 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) [2022-10-17 10:13:54,143 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) [2022-10-17 10:13:54,143 INFO L175 Difference]: Start difference. First operand has 173 places, 179 transitions, 481 flow. Second operand 6 states and 1063 transitions. [2022-10-17 10:13:54,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 227 transitions, 988 flow [2022-10-17 10:13:54,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 227 transitions, 984 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:13:54,176 INFO L231 Difference]: Finished difference. Result has 176 places, 198 transitions, 696 flow [2022-10-17 10:13:54,177 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} [2022-10-17 10:13:54,180 INFO L287 CegarLoopForPetriNet]: 182 programPoint places, -6 predicate places. [2022-10-17 10:13:54,180 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 198 transitions, 696 flow [2022-10-17 10:13:54,182 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) [2022-10-17 10:13:54,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:13:54,182 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] [2022-10-17 10:13:54,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:13:54,183 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)] === [2022-10-17 10:13:54,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:54,184 INFO L85 PathProgramCache]: Analyzing trace with hash -953857843, now seen corresponding path program 1 times [2022-10-17 10:13:54,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:54,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446606589] [2022-10-17 10:13:54,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:54,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:55,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:55,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:13:55,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446606589] [2022-10-17 10:13:55,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446606589] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:13:55,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:13:55,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 10:13:55,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474321961] [2022-10-17 10:13:55,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:13:55,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:13:55,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:13:55,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:13:55,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:13:55,504 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 274 [2022-10-17 10:13:55,508 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) [2022-10-17 10:13:55,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:13:55,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 274 [2022-10-17 10:13:55,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:01,053 INFO L130 PetriNetUnfolder]: 9736/16108 cut-off events. [2022-10-17 10:14:01,053 INFO L131 PetriNetUnfolder]: For 21089/21122 co-relation queries the response was YES. [2022-10-17 10:14:01,115 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. [2022-10-17 10:14:01,271 INFO L137 encePairwiseOnDemand]: 256/274 looper letters, 477 selfloop transitions, 92 changer transitions 0/643 dead transitions. [2022-10-17 10:14:01,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 643 transitions, 3353 flow [2022-10-17 10:14:01,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-17 10:14:01,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-10-17 10:14:01,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2901 transitions. [2022-10-17 10:14:01,288 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5881995133819952 [2022-10-17 10:14:01,288 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2901 transitions. [2022-10-17 10:14:01,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2901 transitions. [2022-10-17 10:14:01,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:01,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2901 transitions. [2022-10-17 10:14:01,304 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) [2022-10-17 10:14:01,317 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) [2022-10-17 10:14:01,322 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) [2022-10-17 10:14:01,323 INFO L175 Difference]: Start difference. First operand has 176 places, 198 transitions, 696 flow. Second operand 18 states and 2901 transitions. [2022-10-17 10:14:01,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 643 transitions, 3353 flow [2022-10-17 10:14:01,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 643 transitions, 3202 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:14:01,505 INFO L231 Difference]: Finished difference. Result has 204 places, 269 transitions, 1562 flow [2022-10-17 10:14:01,505 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} [2022-10-17 10:14:01,507 INFO L287 CegarLoopForPetriNet]: 182 programPoint places, 22 predicate places. [2022-10-17 10:14:01,508 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 269 transitions, 1562 flow [2022-10-17 10:14:01,509 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) [2022-10-17 10:14:01,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:01,509 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] [2022-10-17 10:14:01,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:14:01,510 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)] === [2022-10-17 10:14:01,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:01,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1899085895, now seen corresponding path program 2 times [2022-10-17 10:14:01,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:01,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053629534] [2022-10-17 10:14:01,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:01,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:02,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:02,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:02,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053629534] [2022-10-17 10:14:02,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053629534] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:02,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:02,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:14:02,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220375139] [2022-10-17 10:14:02,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:02,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:14:02,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:02,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:14:02,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:14:02,227 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 274 [2022-10-17 10:14:02,229 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) [2022-10-17 10:14:02,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:02,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 274 [2022-10-17 10:14:02,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:14:07,602 INFO L130 PetriNetUnfolder]: 11963/20463 cut-off events. [2022-10-17 10:14:07,602 INFO L131 PetriNetUnfolder]: For 51211/51261 co-relation queries the response was YES. [2022-10-17 10:14:07,729 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. [2022-10-17 10:14:07,926 INFO L137 encePairwiseOnDemand]: 264/274 looper letters, 449 selfloop transitions, 45 changer transitions 0/585 dead transitions. [2022-10-17 10:14:07,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 585 transitions, 3872 flow [2022-10-17 10:14:07,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 10:14:07,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-10-17 10:14:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2729 transitions. [2022-10-17 10:14:07,939 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6224908759124088 [2022-10-17 10:14:07,939 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2729 transitions. [2022-10-17 10:14:07,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2729 transitions. [2022-10-17 10:14:07,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:14:07,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2729 transitions. [2022-10-17 10:14:07,953 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) [2022-10-17 10:14:07,965 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) [2022-10-17 10:14:07,968 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) [2022-10-17 10:14:07,968 INFO L175 Difference]: Start difference. First operand has 204 places, 269 transitions, 1562 flow. Second operand 16 states and 2729 transitions. [2022-10-17 10:14:07,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 585 transitions, 3872 flow [2022-10-17 10:14:08,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 585 transitions, 3852 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-10-17 10:14:08,347 INFO L231 Difference]: Finished difference. Result has 228 places, 301 transitions, 1958 flow [2022-10-17 10:14:08,348 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} [2022-10-17 10:14:08,349 INFO L287 CegarLoopForPetriNet]: 182 programPoint places, 46 predicate places. [2022-10-17 10:14:08,349 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 301 transitions, 1958 flow [2022-10-17 10:14:08,350 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) [2022-10-17 10:14:08,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:14:08,351 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] [2022-10-17 10:14:08,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:14:08,351 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)] === [2022-10-17 10:14:08,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:14:08,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1514701539, now seen corresponding path program 3 times [2022-10-17 10:14:08,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:14:08,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721684153] [2022-10-17 10:14:08,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:14:08,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:14:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:14:09,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:14:09,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:14:09,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721684153] [2022-10-17 10:14:09,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721684153] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:14:09,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:14:09,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 10:14:09,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118942256] [2022-10-17 10:14:09,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:14:09,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:14:09,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:14:09,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:14:09,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:14:09,505 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 274 [2022-10-17 10:14:09,507 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) [2022-10-17 10:14:09,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:14:09,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 274 [2022-10-17 10:14:09,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand