./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/singleton-b.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_c001c68e-ed27-4471-a539-1a1aa75dc004/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c001c68e-ed27-4471-a539-1a1aa75dc004/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_c001c68e-ed27-4471-a539-1a1aa75dc004/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c001c68e-ed27-4471-a539-1a1aa75dc004/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/singleton-b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c001c68e-ed27-4471-a539-1a1aa75dc004/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_c001c68e-ed27-4471-a539-1a1aa75dc004/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 8df6b0e07576c0f44be76a2619065be37971886a948c5dcc3b73910d3c970468 --- 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 20:04:01,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:04:01,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:04:01,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:04:01,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:04:01,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:04:01,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:04:01,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:04:01,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:04:01,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:04:01,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:04:01,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:04:01,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:04:01,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:04:01,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:04:01,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:04:01,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:04:01,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:04:01,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:04:01,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:04:01,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:04:01,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:04:01,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:04:01,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:04:01,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:04:01,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:04:01,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:04:01,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:04:01,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:04:01,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:04:01,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:04:01,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:04:01,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:04:01,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:04:01,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:04:01,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:04:01,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:04:01,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:04:01,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:04:01,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:04:01,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:04:01,603 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c001c68e-ed27-4471-a539-1a1aa75dc004/bin/uautomizer-TMbwUNV5ro/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-18 20:04:01,650 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:04:01,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:04:01,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:04:01,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:04:01,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:04:01,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:04:01,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:04:01,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:04:01,657 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:04:01,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:04:01,658 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:04:01,659 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:04:01,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:04:01,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:04:01,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:04:01,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:04:01,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:04:01,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:04:01,661 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-18 20:04:01,661 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:04:01,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:04:01,661 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:04:01,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:04:01,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:04:01,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:04:01,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:04:01,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:04:01,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:04:01,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:04:01,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:04:01,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:04:01,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:04:01,666 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:04:01,667 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:04:01,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:04:01,667 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_c001c68e-ed27-4471-a539-1a1aa75dc004/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c001c68e-ed27-4471-a539-1a1aa75dc004/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8df6b0e07576c0f44be76a2619065be37971886a948c5dcc3b73910d3c970468 [2022-11-18 20:04:01,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:04:01,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:04:01,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:04:01,956 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:04:01,957 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:04:01,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c001c68e-ed27-4471-a539-1a1aa75dc004/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/singleton-b.i [2022-11-18 20:04:02,025 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c001c68e-ed27-4471-a539-1a1aa75dc004/bin/uautomizer-TMbwUNV5ro/data/c198b5be9/765146bc80dd42a9bb5c7e6c116bf1e8/FLAG1f7867765 [2022-11-18 20:04:02,616 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:04:02,617 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c001c68e-ed27-4471-a539-1a1aa75dc004/sv-benchmarks/c/pthread/singleton-b.i [2022-11-18 20:04:02,646 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c001c68e-ed27-4471-a539-1a1aa75dc004/bin/uautomizer-TMbwUNV5ro/data/c198b5be9/765146bc80dd42a9bb5c7e6c116bf1e8/FLAG1f7867765 [2022-11-18 20:04:02,900 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c001c68e-ed27-4471-a539-1a1aa75dc004/bin/uautomizer-TMbwUNV5ro/data/c198b5be9/765146bc80dd42a9bb5c7e6c116bf1e8 [2022-11-18 20:04:02,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:04:02,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:04:02,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:04:02,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:04:02,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:04:02,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:04:02" (1/1) ... [2022-11-18 20:04:02,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7acacb54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:02, skipping insertion in model container [2022-11-18 20:04:02,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:04:02" (1/1) ... [2022-11-18 20:04:02,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:04:02,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:04:03,585 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_c001c68e-ed27-4471-a539-1a1aa75dc004/sv-benchmarks/c/pthread/singleton-b.i[55202,55215] [2022-11-18 20:04:03,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:04:03,622 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:04:03,673 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_c001c68e-ed27-4471-a539-1a1aa75dc004/sv-benchmarks/c/pthread/singleton-b.i[55202,55215] [2022-11-18 20:04:03,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:04:03,751 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:04:03,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:03 WrapperNode [2022-11-18 20:04:03,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:04:03,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:04:03,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:04:03,753 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:04:03,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:03" (1/1) ... [2022-11-18 20:04:03,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:03" (1/1) ... [2022-11-18 20:04:03,801 INFO L138 Inliner]: procedures = 323, calls = 47, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2022-11-18 20:04:03,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:04:03,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:04:03,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:04:03,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:04:03,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:03" (1/1) ... [2022-11-18 20:04:03,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:03" (1/1) ... [2022-11-18 20:04:03,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:03" (1/1) ... [2022-11-18 20:04:03,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:03" (1/1) ... [2022-11-18 20:04:03,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:03" (1/1) ... [2022-11-18 20:04:03,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:03" (1/1) ... [2022-11-18 20:04:03,840 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:03" (1/1) ... [2022-11-18 20:04:03,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:03" (1/1) ... [2022-11-18 20:04:03,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:04:03,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:04:03,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:04:03,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:04:03,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:03" (1/1) ... [2022-11-18 20:04:03,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:04:03,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c001c68e-ed27-4471-a539-1a1aa75dc004/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:03,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c001c68e-ed27-4471-a539-1a1aa75dc004/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:03,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c001c68e-ed27-4471-a539-1a1aa75dc004/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:04:03,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:04:03,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:04:03,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:04:03,980 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-11-18 20:04:03,980 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-11-18 20:04:03,982 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:04:03,982 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:04:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:04:03,983 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:04:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:04:03,983 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:04:03,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:04:03,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:04:03,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:04:03,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:04:03,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:04:03,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:04:03,986 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 20:04:04,203 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:04:04,206 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:04:04,579 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:04:04,588 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:04:04,589 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:04:04,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:04:04 BoogieIcfgContainer [2022-11-18 20:04:04,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:04:04,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:04:04,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:04:04,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:04:04,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:04:02" (1/3) ... [2022-11-18 20:04:04,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3985c443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:04:04, skipping insertion in model container [2022-11-18 20:04:04,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:03" (2/3) ... [2022-11-18 20:04:04,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3985c443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:04:04, skipping insertion in model container [2022-11-18 20:04:04,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:04:04" (3/3) ... [2022-11-18 20:04:04,616 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton-b.i [2022-11-18 20:04:04,629 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:04:04,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:04:04,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-11-18 20:04:04,654 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:04:04,822 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2022-11-18 20:04:04,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 296 transitions, 699 flow [2022-11-18 20:04:05,003 INFO L130 PetriNetUnfolder]: 6/209 cut-off events. [2022-11-18 20:04:05,004 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 20:04:05,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 209 events. 6/209 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 191 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 186. Up to 3 conditions per place. [2022-11-18 20:04:05,012 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 296 transitions, 699 flow [2022-11-18 20:04:05,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 192 transitions, 435 flow [2022-11-18 20:04:05,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:04:05,035 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;@206358b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:04:05,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-18 20:04:05,045 INFO L130 PetriNetUnfolder]: 0/33 cut-off events. [2022-11-18 20:04:05,045 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:04:05,046 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:04:05,046 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 20:04:05,047 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 20:04:05,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:05,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1972378663, now seen corresponding path program 1 times [2022-11-18 20:04:05,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:05,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217144902] [2022-11-18 20:04:05,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:05,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:05,790 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 20:04:05,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:05,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217144902] [2022-11-18 20:04:05,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217144902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:04:05,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:04:05,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:04:05,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039932927] [2022-11-18 20:04:05,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:04:05,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:04:05,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:05,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:04:05,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:04:05,871 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 298 [2022-11-18 20:04:05,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 192 transitions, 435 flow. Second operand has 6 states, 6 states have (on average 185.66666666666666) internal successors, (1114), 6 states have internal predecessors, (1114), 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 20:04:05,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:04:05,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 298 [2022-11-18 20:04:05,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:04:27,694 INFO L130 PetriNetUnfolder]: 112378/157146 cut-off events. [2022-11-18 20:04:27,695 INFO L131 PetriNetUnfolder]: For 3073/3124 co-relation queries the response was YES. [2022-11-18 20:04:28,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305993 conditions, 157146 events. 112378/157146 cut-off events. For 3073/3124 co-relation queries the response was YES. Maximal size of possible extension queue 5413. Compared 1190322 event pairs, 55064 based on Foata normal form. 7/118865 useless extension candidates. Maximal degree in co-relation 305937. Up to 95608 conditions per place. [2022-11-18 20:04:29,643 INFO L137 encePairwiseOnDemand]: 288/298 looper letters, 285 selfloop transitions, 21 changer transitions 0/427 dead transitions. [2022-11-18 20:04:29,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 427 transitions, 1700 flow [2022-11-18 20:04:29,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:04:29,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:04:29,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1411 transitions. [2022-11-18 20:04:29,666 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7891498881431768 [2022-11-18 20:04:29,667 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1411 transitions. [2022-11-18 20:04:29,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1411 transitions. [2022-11-18 20:04:29,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:04:29,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1411 transitions. [2022-11-18 20:04:29,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 235.16666666666666) internal successors, (1411), 6 states have internal predecessors, (1411), 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 20:04:29,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 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 20:04:29,695 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 298.0) internal successors, (2086), 7 states have internal predecessors, (2086), 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 20:04:29,697 INFO L175 Difference]: Start difference. First operand has 206 places, 192 transitions, 435 flow. Second operand 6 states and 1411 transitions. [2022-11-18 20:04:29,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 427 transitions, 1700 flow [2022-11-18 20:04:29,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 427 transitions, 1544 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-18 20:04:29,824 INFO L231 Difference]: Finished difference. Result has 204 places, 212 transitions, 543 flow [2022-11-18 20:04:29,827 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=543, PETRI_PLACES=204, PETRI_TRANSITIONS=212} [2022-11-18 20:04:29,832 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, -2 predicate places. [2022-11-18 20:04:29,832 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 212 transitions, 543 flow [2022-11-18 20:04:29,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 185.66666666666666) internal successors, (1114), 6 states have internal predecessors, (1114), 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 20:04:29,834 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:04:29,834 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 20:04:29,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:04:29,835 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 20:04:29,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:29,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1485775174, now seen corresponding path program 1 times [2022-11-18 20:04:29,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:29,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791688362] [2022-11-18 20:04:29,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:29,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:29,940 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 20:04:29,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:29,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791688362] [2022-11-18 20:04:29,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791688362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:04:29,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:04:29,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:04:29,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296429404] [2022-11-18 20:04:29,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:04:29,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:04:29,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:29,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:04:29,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:04:29,955 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 298 [2022-11-18 20:04:29,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 212 transitions, 543 flow. Second operand has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 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 20:04:29,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:04:29,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 298 [2022-11-18 20:04:29,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:04:32,687 INFO L130 PetriNetUnfolder]: 6129/20532 cut-off events. [2022-11-18 20:04:32,687 INFO L131 PetriNetUnfolder]: For 3008/3696 co-relation queries the response was YES. [2022-11-18 20:04:32,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34420 conditions, 20532 events. 6129/20532 cut-off events. For 3008/3696 co-relation queries the response was YES. Maximal size of possible extension queue 1496. Compared 264154 event pairs, 3044 based on Foata normal form. 0/15801 useless extension candidates. Maximal degree in co-relation 23000. Up to 4210 conditions per place. [2022-11-18 20:04:32,904 INFO L137 encePairwiseOnDemand]: 295/298 looper letters, 34 selfloop transitions, 2 changer transitions 0/211 dead transitions. [2022-11-18 20:04:32,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 211 transitions, 613 flow [2022-11-18 20:04:32,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:04:32,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:04:32,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 772 transitions. [2022-11-18 20:04:32,907 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8635346756152126 [2022-11-18 20:04:32,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 772 transitions. [2022-11-18 20:04:32,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 772 transitions. [2022-11-18 20:04:32,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:04:32,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 772 transitions. [2022-11-18 20:04:32,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 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 20:04:32,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 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 20:04:32,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 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 20:04:32,914 INFO L175 Difference]: Start difference. First operand has 204 places, 212 transitions, 543 flow. Second operand 3 states and 772 transitions. [2022-11-18 20:04:32,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 211 transitions, 613 flow [2022-11-18 20:04:32,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 211 transitions, 613 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:04:32,991 INFO L231 Difference]: Finished difference. Result has 205 places, 211 transitions, 545 flow [2022-11-18 20:04:32,992 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=545, PETRI_PLACES=205, PETRI_TRANSITIONS=211} [2022-11-18 20:04:32,993 INFO L288 CegarLoopForPetriNet]: 206 programPoint places, -1 predicate places. [2022-11-18 20:04:32,993 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 211 transitions, 545 flow [2022-11-18 20:04:32,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 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 20:04:32,994 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:04:32,994 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 20:04:32,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:04:32,995 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 20:04:32,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:32,996 INFO L85 PathProgramCache]: Analyzing trace with hash 172656807, now seen corresponding path program 1 times [2022-11-18 20:04:32,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:32,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132212292] [2022-11-18 20:04:32,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:32,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:33,419 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 20:04:33,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:33,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132212292] [2022-11-18 20:04:33,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132212292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:04:33,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:04:33,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:04:33,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130556084] [2022-11-18 20:04:33,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:04:33,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:04:33,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:33,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:04:33,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:04:33,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 298 [2022-11-18 20:04:33,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 211 transitions, 545 flow. Second operand has 6 states, 6 states have (on average 186.66666666666666) internal successors, (1120), 6 states have internal predecessors, (1120), 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 20:04:33,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:04:33,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 298 [2022-11-18 20:04:33,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand