./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 8393723b 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_5f9e5d89-1211-4427-aaaf-26a84afe5a5a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e5d89-1211-4427-aaaf-26a84afe5a5a/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e5d89-1211-4427-aaaf-26a84afe5a5a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e5d89-1211-4427-aaaf-26a84afe5a5a/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/singleton.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e5d89-1211-4427-aaaf-26a84afe5a5a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e5d89-1211-4427-aaaf-26a84afe5a5a/bin/uautomizer-TMbwUNV5ro --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-8393723 [2022-11-18 20:44:08,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:44:08,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:44:08,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:44:08,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:44:08,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:44:08,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:44:08,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:44:08,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:44:08,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:44:08,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:44:08,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:44:08,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:44:08,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:44:08,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:44:08,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:44:08,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:44:08,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:44:08,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:44:08,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:44:08,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:44:08,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:44:08,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:44:08,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:44:08,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:44:08,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:44:08,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:44:08,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:44:08,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:44:08,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:44:08,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:44:08,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:44:08,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:44:08,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:44:08,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:44:08,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:44:08,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:44:08,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:44:08,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:44:08,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:44:08,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:44:08,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e5d89-1211-4427-aaaf-26a84afe5a5a/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 20:44:08,668 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:44:08,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:44:08,669 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:44:08,669 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:44:08,670 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:44:08,674 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:44:08,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:44:08,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:44:08,676 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:44:08,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:44:08,676 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:44:08,676 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:44:08,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:44:08,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:44:08,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:44:08,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:44:08,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:44:08,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:44:08,678 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 20:44:08,678 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:44:08,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:44:08,678 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:44:08,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:44:08,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:44:08,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:44:08,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:44:08,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:44:08,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:44:08,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:44:08,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:44:08,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:44:08,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:44:08,681 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:44:08,681 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:44:08,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:44:08,681 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_5f9e5d89-1211-4427-aaaf-26a84afe5a5a/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e5d89-1211-4427-aaaf-26a84afe5a5a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f [2022-11-18 20:44:08,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:44:09,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:44:09,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:44:09,008 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:44:09,008 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:44:09,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e5d89-1211-4427-aaaf-26a84afe5a5a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/singleton.i [2022-11-18 20:44:09,082 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e5d89-1211-4427-aaaf-26a84afe5a5a/bin/uautomizer-TMbwUNV5ro/data/77ed4b45d/f410cc2304014752b431d75b2491f19f/FLAG58c81db23 [2022-11-18 20:44:09,593 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:44:09,593 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e5d89-1211-4427-aaaf-26a84afe5a5a/sv-benchmarks/c/pthread/singleton.i [2022-11-18 20:44:09,626 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e5d89-1211-4427-aaaf-26a84afe5a5a/bin/uautomizer-TMbwUNV5ro/data/77ed4b45d/f410cc2304014752b431d75b2491f19f/FLAG58c81db23 [2022-11-18 20:44:10,091 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e5d89-1211-4427-aaaf-26a84afe5a5a/bin/uautomizer-TMbwUNV5ro/data/77ed4b45d/f410cc2304014752b431d75b2491f19f [2022-11-18 20:44:10,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:44:10,095 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:44:10,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:44:10,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:44:10,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:44:10,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:44:10" (1/1) ... [2022-11-18 20:44:10,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d8e8d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:10, skipping insertion in model container [2022-11-18 20:44:10,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:44:10" (1/1) ... [2022-11-18 20:44:10,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:44:10,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:44:10,403 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-18 20:44:10,661 WARN L234 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_5f9e5d89-1211-4427-aaaf-26a84afe5a5a/sv-benchmarks/c/pthread/singleton.i[55547,55560] [2022-11-18 20:44:10,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:44:10,720 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:44:10,741 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-18 20:44:10,788 WARN L234 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_5f9e5d89-1211-4427-aaaf-26a84afe5a5a/sv-benchmarks/c/pthread/singleton.i[55547,55560] [2022-11-18 20:44:10,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:44:10,884 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:44:10,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:10 WrapperNode [2022-11-18 20:44:10,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:44:10,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:44:10,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:44:10,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:44:10,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:10" (1/1) ... [2022-11-18 20:44:10,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:10" (1/1) ... [2022-11-18 20:44:10,929 INFO L138 Inliner]: procedures = 325, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2022-11-18 20:44:10,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:44:10,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:44:10,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:44:10,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:44:10,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:10" (1/1) ... [2022-11-18 20:44:10,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:10" (1/1) ... [2022-11-18 20:44:10,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:10" (1/1) ... [2022-11-18 20:44:10,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:10" (1/1) ... [2022-11-18 20:44:10,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:10" (1/1) ... [2022-11-18 20:44:10,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:10" (1/1) ... [2022-11-18 20:44:10,966 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:10" (1/1) ... [2022-11-18 20:44:10,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:10" (1/1) ... [2022-11-18 20:44:10,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:44:10,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:44:10,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:44:10,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:44:10,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:10" (1/1) ... [2022-11-18 20:44:10,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:44:10,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e5d89-1211-4427-aaaf-26a84afe5a5a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:44:11,013 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e5d89-1211-4427-aaaf-26a84afe5a5a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:44:11,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f9e5d89-1211-4427-aaaf-26a84afe5a5a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:44:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:44:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:44:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:44:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:44:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:44:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-11-18 20:44:11,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-11-18 20:44:11,071 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:44:11,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:44:11,071 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:44:11,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:44:11,072 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:44:11,072 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:44:11,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:44:11,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:44:11,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:44:11,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:44:11,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:44:11,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:44:11,074 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:44:11,257 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:44:11,265 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:44:11,629 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:44:11,674 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:44:11,674 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:44:11,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:44:11 BoogieIcfgContainer [2022-11-18 20:44:11,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:44:11,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:44:11,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:44:11,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:44:11,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:44:10" (1/3) ... [2022-11-18 20:44:11,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a38dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:44:11, skipping insertion in model container [2022-11-18 20:44:11,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:10" (2/3) ... [2022-11-18 20:44:11,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a38dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:44:11, skipping insertion in model container [2022-11-18 20:44:11,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:44:11" (3/3) ... [2022-11-18 20:44:11,686 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton.i [2022-11-18 20:44:11,695 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:44:11,705 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:44:11,705 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-11-18 20:44:11,705 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:44:11,858 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2022-11-18 20:44:11,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 272 transitions, 651 flow [2022-11-18 20:44:11,971 INFO L130 PetriNetUnfolder]: 6/185 cut-off events. [2022-11-18 20:44:11,971 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 20:44:11,978 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 114 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. [2022-11-18 20:44:11,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 282 places, 272 transitions, 651 flow [2022-11-18 20:44:11,984 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 168 transitions, 387 flow [2022-11-18 20:44:11,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:44:12,001 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;@7ffced6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:44:12,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-18 20:44:12,011 INFO L130 PetriNetUnfolder]: 0/33 cut-off events. [2022-11-18 20:44:12,011 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:44:12,012 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:44:12,012 INFO L209 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] [2022-11-18 20:44:12,013 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)] === [2022-11-18 20:44:12,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:12,018 INFO L85 PathProgramCache]: Analyzing trace with hash -59342021, now seen corresponding path program 1 times [2022-11-18 20:44:12,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:12,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846539884] [2022-11-18 20:44:12,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:12,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:12,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:12,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:12,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846539884] [2022-11-18 20:44:12,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846539884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:44:12,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:44:12,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:44:12,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599999009] [2022-11-18 20:44:12,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:44:12,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:44:12,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:12,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:44:12,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:44:12,912 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 274 [2022-11-18 20:44:12,918 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) [2022-11-18 20:44:12,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:44:12,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 274 [2022-11-18 20:44:12,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:44:16,302 INFO L130 PetriNetUnfolder]: 6956/11018 cut-off events. [2022-11-18 20:44:16,302 INFO L131 PetriNetUnfolder]: For 548/592 co-relation queries the response was YES. [2022-11-18 20:44:16,342 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 66464 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. [2022-11-18 20:44:16,412 INFO L137 encePairwiseOnDemand]: 256/274 looper letters, 245 selfloop transitions, 21 changer transitions 0/363 dead transitions. [2022-11-18 20:44:16,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 363 transitions, 1492 flow [2022-11-18 20:44:16,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:44:16,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:44:16,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1267 transitions. [2022-11-18 20:44:16,431 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7706812652068127 [2022-11-18 20:44:16,432 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1267 transitions. [2022-11-18 20:44:16,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1267 transitions. [2022-11-18 20:44:16,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:44:16,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1267 transitions. [2022-11-18 20:44:16,446 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) [2022-11-18 20:44:16,457 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) [2022-11-18 20:44:16,458 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) [2022-11-18 20:44:16,460 INFO L175 Difference]: Start difference. First operand has 182 places, 168 transitions, 387 flow. Second operand 6 states and 1267 transitions. [2022-11-18 20:44:16,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 363 transitions, 1492 flow [2022-11-18 20:44:16,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 363 transitions, 1336 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-18 20:44:16,493 INFO L231 Difference]: Finished difference. Result has 172 places, 180 transitions, 479 flow [2022-11-18 20:44:16,496 INFO L271 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} [2022-11-18 20:44:16,502 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, -10 predicate places. [2022-11-18 20:44:16,503 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 180 transitions, 479 flow [2022-11-18 20:44:16,504 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) [2022-11-18 20:44:16,504 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:44:16,505 INFO L209 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] [2022-11-18 20:44:16,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:44:16,506 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-18 20:44:16,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:16,510 INFO L85 PathProgramCache]: Analyzing trace with hash 21299019, now seen corresponding path program 1 times [2022-11-18 20:44:16,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:16,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49011102] [2022-11-18 20:44:16,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:16,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:16,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:16,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:16,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49011102] [2022-11-18 20:44:16,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49011102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:44:16,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:44:16,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:44:16,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599922911] [2022-11-18 20:44:16,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:44:16,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:44:16,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:16,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:44:16,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:44:16,643 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 274 [2022-11-18 20:44:16,644 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) [2022-11-18 20:44:16,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:44:16,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 274 [2022-11-18 20:44:16,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:44:17,069 INFO L130 PetriNetUnfolder]: 778/2150 cut-off events. [2022-11-18 20:44:17,069 INFO L131 PetriNetUnfolder]: For 1158/1340 co-relation queries the response was YES. [2022-11-18 20:44:17,079 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 13618 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. [2022-11-18 20:44:17,092 INFO L137 encePairwiseOnDemand]: 271/274 looper letters, 42 selfloop transitions, 2 changer transitions 0/179 dead transitions. [2022-11-18 20:44:17,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 179 transitions, 565 flow [2022-11-18 20:44:17,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:44:17,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:44:17,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2022-11-18 20:44:17,095 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8418491484184915 [2022-11-18 20:44:17,095 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 692 transitions. [2022-11-18 20:44:17,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 692 transitions. [2022-11-18 20:44:17,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:44:17,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 692 transitions. [2022-11-18 20:44:17,098 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) [2022-11-18 20:44:17,099 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) [2022-11-18 20:44:17,100 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) [2022-11-18 20:44:17,100 INFO L175 Difference]: Start difference. First operand has 172 places, 180 transitions, 479 flow. Second operand 3 states and 692 transitions. [2022-11-18 20:44:17,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 179 transitions, 565 flow [2022-11-18 20:44:17,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 179 transitions, 565 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:44:17,108 INFO L231 Difference]: Finished difference. Result has 173 places, 179 transitions, 481 flow [2022-11-18 20:44:17,109 INFO L271 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} [2022-11-18 20:44:17,110 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, -9 predicate places. [2022-11-18 20:44:17,110 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 179 transitions, 481 flow [2022-11-18 20:44:17,111 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) [2022-11-18 20:44:17,111 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:44:17,111 INFO L209 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] [2022-11-18 20:44:17,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:44:17,112 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread0Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-18 20:44:17,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:17,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1560345132, now seen corresponding path program 1 times [2022-11-18 20:44:17,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:17,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490545238] [2022-11-18 20:44:17,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:17,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:17,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:17,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490545238] [2022-11-18 20:44:17,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490545238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:44:17,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:44:17,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:44:17,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565123850] [2022-11-18 20:44:17,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:44:17,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:44:17,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:17,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:44:17,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:44:17,525 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 274 [2022-11-18 20:44:17,527 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) [2022-11-18 20:44:17,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:44:17,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 274 [2022-11-18 20:44:17,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:44:19,675 INFO L130 PetriNetUnfolder]: 6392/10591 cut-off events. [2022-11-18 20:44:19,675 INFO L131 PetriNetUnfolder]: For 10529/10565 co-relation queries the response was YES. [2022-11-18 20:44:19,709 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 63589 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. [2022-11-18 20:44:19,777 INFO L137 encePairwiseOnDemand]: 265/274 looper letters, 108 selfloop transitions, 24 changer transitions 0/227 dead transitions. [2022-11-18 20:44:19,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 227 transitions, 988 flow [2022-11-18 20:44:19,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:44:19,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:44:19,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1063 transitions. [2022-11-18 20:44:19,781 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6465936739659367 [2022-11-18 20:44:19,781 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1063 transitions. [2022-11-18 20:44:19,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1063 transitions. [2022-11-18 20:44:19,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:44:19,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1063 transitions. [2022-11-18 20:44:19,785 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) [2022-11-18 20:44:19,788 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) [2022-11-18 20:44:19,789 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) [2022-11-18 20:44:19,789 INFO L175 Difference]: Start difference. First operand has 173 places, 179 transitions, 481 flow. Second operand 6 states and 1063 transitions. [2022-11-18 20:44:19,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 227 transitions, 988 flow [2022-11-18 20:44:19,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 227 transitions, 984 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:44:19,813 INFO L231 Difference]: Finished difference. Result has 176 places, 198 transitions, 696 flow [2022-11-18 20:44:19,813 INFO L271 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} [2022-11-18 20:44:19,816 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, -6 predicate places. [2022-11-18 20:44:19,816 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 198 transitions, 696 flow [2022-11-18 20:44:19,817 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) [2022-11-18 20:44:19,817 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:44:19,817 INFO L209 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] [2022-11-18 20:44:19,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:44:19,818 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)] === [2022-11-18 20:44:19,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:19,819 INFO L85 PathProgramCache]: Analyzing trace with hash -953857843, now seen corresponding path program 1 times [2022-11-18 20:44:19,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:19,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406845992] [2022-11-18 20:44:19,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:19,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:20,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:20,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:21,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406845992] [2022-11-18 20:44:21,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406845992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:44:21,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:44:21,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:44:21,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348067903] [2022-11-18 20:44:21,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:44:21,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:44:21,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:21,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:44:21,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:44:21,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 274 [2022-11-18 20:44:21,013 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) [2022-11-18 20:44:21,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:44:21,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 274 [2022-11-18 20:44:21,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:44:26,147 INFO L130 PetriNetUnfolder]: 9736/16108 cut-off events. [2022-11-18 20:44:26,148 INFO L131 PetriNetUnfolder]: For 21089/21122 co-relation queries the response was YES. [2022-11-18 20:44:26,201 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 104921 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. [2022-11-18 20:44:26,389 INFO L137 encePairwiseOnDemand]: 256/274 looper letters, 477 selfloop transitions, 92 changer transitions 0/643 dead transitions. [2022-11-18 20:44:26,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 643 transitions, 3353 flow [2022-11-18 20:44:26,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:44:26,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:44:26,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2901 transitions. [2022-11-18 20:44:26,398 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5881995133819952 [2022-11-18 20:44:26,398 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2901 transitions. [2022-11-18 20:44:26,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2901 transitions. [2022-11-18 20:44:26,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:44:26,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2901 transitions. [2022-11-18 20:44:26,407 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) [2022-11-18 20:44:26,415 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) [2022-11-18 20:44:26,417 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) [2022-11-18 20:44:26,418 INFO L175 Difference]: Start difference. First operand has 176 places, 198 transitions, 696 flow. Second operand 18 states and 2901 transitions. [2022-11-18 20:44:26,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 643 transitions, 3353 flow [2022-11-18 20:44:26,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 643 transitions, 3202 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:44:26,542 INFO L231 Difference]: Finished difference. Result has 204 places, 269 transitions, 1562 flow [2022-11-18 20:44:26,543 INFO L271 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} [2022-11-18 20:44:26,544 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 22 predicate places. [2022-11-18 20:44:26,544 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 269 transitions, 1562 flow [2022-11-18 20:44:26,547 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) [2022-11-18 20:44:26,548 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:44:26,549 INFO L209 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] [2022-11-18 20:44:26,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:44:26,549 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)] === [2022-11-18 20:44:26,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:26,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1899085895, now seen corresponding path program 2 times [2022-11-18 20:44:26,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:26,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140699152] [2022-11-18 20:44:26,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:26,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:27,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:27,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:27,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140699152] [2022-11-18 20:44:27,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140699152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:44:27,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:44:27,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:44:27,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371359104] [2022-11-18 20:44:27,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:44:27,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:44:27,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:27,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:44:27,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:44:27,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 274 [2022-11-18 20:44:27,089 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) [2022-11-18 20:44:27,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:44:27,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 274 [2022-11-18 20:44:27,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:44:31,909 INFO L130 PetriNetUnfolder]: 11963/20463 cut-off events. [2022-11-18 20:44:31,909 INFO L131 PetriNetUnfolder]: For 51211/51261 co-relation queries the response was YES. [2022-11-18 20:44:32,001 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 141648 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. [2022-11-18 20:44:32,137 INFO L137 encePairwiseOnDemand]: 264/274 looper letters, 449 selfloop transitions, 45 changer transitions 0/585 dead transitions. [2022-11-18 20:44:32,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 585 transitions, 3872 flow [2022-11-18 20:44:32,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:44:32,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 20:44:32,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2729 transitions. [2022-11-18 20:44:32,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6224908759124088 [2022-11-18 20:44:32,145 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2729 transitions. [2022-11-18 20:44:32,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2729 transitions. [2022-11-18 20:44:32,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:44:32,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2729 transitions. [2022-11-18 20:44:32,153 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) [2022-11-18 20:44:32,161 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) [2022-11-18 20:44:32,163 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) [2022-11-18 20:44:32,163 INFO L175 Difference]: Start difference. First operand has 204 places, 269 transitions, 1562 flow. Second operand 16 states and 2729 transitions. [2022-11-18 20:44:32,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 585 transitions, 3872 flow [2022-11-18 20:44:32,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 585 transitions, 3852 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-11-18 20:44:32,574 INFO L231 Difference]: Finished difference. Result has 228 places, 301 transitions, 1958 flow [2022-11-18 20:44:32,574 INFO L271 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} [2022-11-18 20:44:32,575 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 46 predicate places. [2022-11-18 20:44:32,575 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 301 transitions, 1958 flow [2022-11-18 20:44:32,576 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) [2022-11-18 20:44:32,576 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:44:32,577 INFO L209 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] [2022-11-18 20:44:32,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:44:32,577 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)] === [2022-11-18 20:44:32,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:32,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1514701539, now seen corresponding path program 3 times [2022-11-18 20:44:32,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:32,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632847212] [2022-11-18 20:44:32,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:32,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:33,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:33,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:33,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632847212] [2022-11-18 20:44:33,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632847212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:44:33,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:44:33,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:44:33,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998749303] [2022-11-18 20:44:33,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:44:33,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:44:33,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:33,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:44:33,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:44:33,369 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 274 [2022-11-18 20:44:33,371 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) [2022-11-18 20:44:33,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:44:33,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 274 [2022-11-18 20:44:33,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:44:39,678 INFO L130 PetriNetUnfolder]: 13882/23856 cut-off events. [2022-11-18 20:44:39,679 INFO L131 PetriNetUnfolder]: For 87082/87159 co-relation queries the response was YES. [2022-11-18 20:44:39,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91166 conditions, 23856 events. 13882/23856 cut-off events. For 87082/87159 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 169980 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. [2022-11-18 20:44:39,972 INFO L137 encePairwiseOnDemand]: 257/274 looper letters, 492 selfloop transitions, 117 changer transitions 0/683 dead transitions. [2022-11-18 20:44:39,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 683 transitions, 4826 flow [2022-11-18 20:44:39,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:44:39,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 20:44:39,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2424 transitions. [2022-11-18 20:44:39,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5897810218978102 [2022-11-18 20:44:39,980 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2424 transitions. [2022-11-18 20:44:39,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2424 transitions. [2022-11-18 20:44:39,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:44:39,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2424 transitions. [2022-11-18 20:44:39,987 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) [2022-11-18 20:44:39,994 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) [2022-11-18 20:44:39,995 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) [2022-11-18 20:44:39,996 INFO L175 Difference]: Start difference. First operand has 228 places, 301 transitions, 1958 flow. Second operand 15 states and 2424 transitions. [2022-11-18 20:44:39,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 683 transitions, 4826 flow [2022-11-18 20:44:40,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 683 transitions, 4729 flow, removed 38 selfloop flow, removed 2 redundant places. [2022-11-18 20:44:40,828 INFO L231 Difference]: Finished difference. Result has 252 places, 358 transitions, 3006 flow [2022-11-18 20:44:40,829 INFO L271 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} [2022-11-18 20:44:40,829 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 70 predicate places. [2022-11-18 20:44:40,830 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 358 transitions, 3006 flow [2022-11-18 20:44:40,830 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) [2022-11-18 20:44:40,831 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:44:40,831 INFO L209 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] [2022-11-18 20:44:40,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:44:40,831 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)] === [2022-11-18 20:44:40,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:40,832 INFO L85 PathProgramCache]: Analyzing trace with hash -247823929, now seen corresponding path program 4 times [2022-11-18 20:44:40,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:40,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470146211] [2022-11-18 20:44:40,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:40,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:41,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:41,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470146211] [2022-11-18 20:44:41,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470146211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:44:41,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:44:41,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:44:41,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032604800] [2022-11-18 20:44:41,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:44:41,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:44:41,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:41,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:44:41,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:44:41,409 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 274 [2022-11-18 20:44:41,410 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) [2022-11-18 20:44:41,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:44:41,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 274 [2022-11-18 20:44:41,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:44:50,165 INFO L130 PetriNetUnfolder]: 19927/34595 cut-off events. [2022-11-18 20:44:50,166 INFO L131 PetriNetUnfolder]: For 191998/192121 co-relation queries the response was YES. [2022-11-18 20:44:50,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140098 conditions, 34595 events. 19927/34595 cut-off events. For 191998/192121 co-relation queries the response was YES. Maximal size of possible extension queue 1093. Compared 266827 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. [2022-11-18 20:44:50,690 INFO L137 encePairwiseOnDemand]: 260/274 looper letters, 530 selfloop transitions, 108 changer transitions 0/740 dead transitions. [2022-11-18 20:44:50,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 740 transitions, 6457 flow [2022-11-18 20:44:50,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:44:50,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 20:44:50,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2627 transitions. [2022-11-18 20:44:50,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6391727493917275 [2022-11-18 20:44:50,699 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2627 transitions. [2022-11-18 20:44:50,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2627 transitions. [2022-11-18 20:44:50,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:44:50,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2627 transitions. [2022-11-18 20:44:50,708 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) [2022-11-18 20:44:50,716 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) [2022-11-18 20:44:50,717 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) [2022-11-18 20:44:50,718 INFO L175 Difference]: Start difference. First operand has 252 places, 358 transitions, 3006 flow. Second operand 15 states and 2627 transitions. [2022-11-18 20:44:50,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 740 transitions, 6457 flow [2022-11-18 20:44:51,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 740 transitions, 6256 flow, removed 35 selfloop flow, removed 2 redundant places. [2022-11-18 20:44:51,793 INFO L231 Difference]: Finished difference. Result has 274 places, 410 transitions, 3980 flow [2022-11-18 20:44:51,794 INFO L271 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} [2022-11-18 20:44:51,794 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 92 predicate places. [2022-11-18 20:44:51,794 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 410 transitions, 3980 flow [2022-11-18 20:44:51,796 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) [2022-11-18 20:44:51,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:44:51,796 INFO L209 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] [2022-11-18 20:44:51,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:44:51,797 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)] === [2022-11-18 20:44:51,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:51,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1496184487, now seen corresponding path program 5 times [2022-11-18 20:44:51,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:51,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148183261] [2022-11-18 20:44:51,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:51,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:52,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:52,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:52,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148183261] [2022-11-18 20:44:52,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148183261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:44:52,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:44:52,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:44:52,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449827370] [2022-11-18 20:44:52,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:44:52,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:44:52,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:52,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:44:52,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:44:52,473 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 274 [2022-11-18 20:44:52,476 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) [2022-11-18 20:44:52,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:44:52,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 274 [2022-11-18 20:44:52,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:45:04,729 INFO L130 PetriNetUnfolder]: 25833/44844 cut-off events. [2022-11-18 20:45:04,729 INFO L131 PetriNetUnfolder]: For 253563/253829 co-relation queries the response was YES. [2022-11-18 20:45:05,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186032 conditions, 44844 events. 25833/44844 cut-off events. For 253563/253829 co-relation queries the response was YES. Maximal size of possible extension queue 1406. Compared 361486 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. [2022-11-18 20:45:05,396 INFO L137 encePairwiseOnDemand]: 257/274 looper letters, 625 selfloop transitions, 184 changer transitions 0/883 dead transitions. [2022-11-18 20:45:05,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 883 transitions, 8148 flow [2022-11-18 20:45:05,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:45:05,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 20:45:05,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3163 transitions. [2022-11-18 20:45:05,406 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5771897810218978 [2022-11-18 20:45:05,406 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3163 transitions. [2022-11-18 20:45:05,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3163 transitions. [2022-11-18 20:45:05,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:45:05,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3163 transitions. [2022-11-18 20:45:05,417 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) [2022-11-18 20:45:05,427 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) [2022-11-18 20:45:05,429 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) [2022-11-18 20:45:05,429 INFO L175 Difference]: Start difference. First operand has 274 places, 410 transitions, 3980 flow. Second operand 20 states and 3163 transitions. [2022-11-18 20:45:05,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 883 transitions, 8148 flow [2022-11-18 20:45:08,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 883 transitions, 8081 flow, removed 33 selfloop flow, removed 1 redundant places. [2022-11-18 20:45:08,107 INFO L231 Difference]: Finished difference. Result has 308 places, 480 transitions, 5635 flow [2022-11-18 20:45:08,107 INFO L271 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} [2022-11-18 20:45:08,108 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 126 predicate places. [2022-11-18 20:45:08,108 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 480 transitions, 5635 flow [2022-11-18 20:45:08,109 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) [2022-11-18 20:45:08,109 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:45:08,109 INFO L209 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] [2022-11-18 20:45:08,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:45:08,110 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)] === [2022-11-18 20:45:08,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:45:08,110 INFO L85 PathProgramCache]: Analyzing trace with hash -180243206, now seen corresponding path program 1 times [2022-11-18 20:45:08,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:45:08,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467169891] [2022-11-18 20:45:08,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:45:08,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:45:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:45:08,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:45:08,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467169891] [2022-11-18 20:45:08,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467169891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:45:08,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:45:08,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:45:08,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167024540] [2022-11-18 20:45:08,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:45:08,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:45:08,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:45:08,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:45:08,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:45:08,681 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 274 [2022-11-18 20:45:08,682 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) [2022-11-18 20:45:08,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:45:08,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 274 [2022-11-18 20:45:08,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand