./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 b5237d83 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_77fe4541-937b-447e-b2eb-1006de2a9941/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77fe4541-937b-447e-b2eb-1006de2a9941/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77fe4541-937b-447e-b2eb-1006de2a9941/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77fe4541-937b-447e-b2eb-1006de2a9941/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/singleton.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77fe4541-937b-447e-b2eb-1006de2a9941/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77fe4541-937b-447e-b2eb-1006de2a9941/bin/uautomizer-vX5HgA9Q3a --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-b5237d8 [2022-11-21 07:38:37,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 07:38:37,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 07:38:37,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 07:38:37,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 07:38:37,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 07:38:37,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 07:38:37,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 07:38:37,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 07:38:37,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 07:38:37,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 07:38:37,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 07:38:37,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 07:38:37,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 07:38:37,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 07:38:37,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 07:38:37,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 07:38:37,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 07:38:37,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 07:38:37,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 07:38:37,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 07:38:37,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 07:38:37,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 07:38:37,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 07:38:37,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 07:38:37,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 07:38:37,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 07:38:37,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 07:38:37,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 07:38:37,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 07:38:37,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 07:38:37,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 07:38:37,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 07:38:37,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 07:38:37,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 07:38:37,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 07:38:37,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 07:38:37,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 07:38:37,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 07:38:37,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 07:38:37,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 07:38:37,803 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77fe4541-937b-447e-b2eb-1006de2a9941/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-21 07:38:37,850 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 07:38:37,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 07:38:37,852 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 07:38:37,852 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 07:38:37,853 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 07:38:37,854 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 07:38:37,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 07:38:37,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 07:38:37,855 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 07:38:37,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 07:38:37,857 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 07:38:37,857 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 07:38:37,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 07:38:37,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 07:38:37,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 07:38:37,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 07:38:37,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 07:38:37,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 07:38:37,859 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-21 07:38:37,860 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 07:38:37,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 07:38:37,860 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 07:38:37,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 07:38:37,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 07:38:37,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 07:38:37,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 07:38:37,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 07:38:37,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 07:38:37,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 07:38:37,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 07:38:37,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 07:38:37,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 07:38:37,864 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 07:38:37,864 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 07:38:37,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 07:38:37,865 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_77fe4541-937b-447e-b2eb-1006de2a9941/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77fe4541-937b-447e-b2eb-1006de2a9941/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f [2022-11-21 07:38:38,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 07:38:38,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 07:38:38,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 07:38:38,298 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 07:38:38,298 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 07:38:38,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77fe4541-937b-447e-b2eb-1006de2a9941/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread/singleton.i [2022-11-21 07:38:41,956 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 07:38:42,434 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 07:38:42,435 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77fe4541-937b-447e-b2eb-1006de2a9941/sv-benchmarks/c/pthread/singleton.i [2022-11-21 07:38:42,459 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77fe4541-937b-447e-b2eb-1006de2a9941/bin/uautomizer-vX5HgA9Q3a/data/a0bdc052c/06aa6a32bdd24f29aee35285bd0cdcf6/FLAGf1f97d280 [2022-11-21 07:38:42,476 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77fe4541-937b-447e-b2eb-1006de2a9941/bin/uautomizer-vX5HgA9Q3a/data/a0bdc052c/06aa6a32bdd24f29aee35285bd0cdcf6 [2022-11-21 07:38:42,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 07:38:42,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 07:38:42,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 07:38:42,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 07:38:42,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 07:38:42,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:38:42" (1/1) ... [2022-11-21 07:38:42,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5888d8d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:38:42, skipping insertion in model container [2022-11-21 07:38:42,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:38:42" (1/1) ... [2022-11-21 07:38:42,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 07:38:42,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 07:38:42,859 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-21 07:38:43,288 WARN L237 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_77fe4541-937b-447e-b2eb-1006de2a9941/sv-benchmarks/c/pthread/singleton.i[55547,55560] [2022-11-21 07:38:43,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 07:38:43,329 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 07:38:43,358 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-21 07:38:43,391 WARN L237 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_77fe4541-937b-447e-b2eb-1006de2a9941/sv-benchmarks/c/pthread/singleton.i[55547,55560] [2022-11-21 07:38:43,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 07:38:43,510 INFO L208 MainTranslator]: Completed translation [2022-11-21 07:38:43,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:38:43 WrapperNode [2022-11-21 07:38:43,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 07:38:43,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 07:38:43,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 07:38:43,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 07:38:43,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:38:43" (1/1) ... [2022-11-21 07:38:43,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:38:43" (1/1) ... [2022-11-21 07:38:43,590 INFO L138 Inliner]: procedures = 325, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2022-11-21 07:38:43,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 07:38:43,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 07:38:43,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 07:38:43,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 07:38:43,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:38:43" (1/1) ... [2022-11-21 07:38:43,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:38:43" (1/1) ... [2022-11-21 07:38:43,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:38:43" (1/1) ... [2022-11-21 07:38:43,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:38:43" (1/1) ... [2022-11-21 07:38:43,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:38:43" (1/1) ... [2022-11-21 07:38:43,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:38:43" (1/1) ... [2022-11-21 07:38:43,651 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:38:43" (1/1) ... [2022-11-21 07:38:43,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:38:43" (1/1) ... [2022-11-21 07:38:43,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 07:38:43,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 07:38:43,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 07:38:43,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 07:38:43,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:38:43" (1/1) ... [2022-11-21 07:38:43,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 07:38:43,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77fe4541-937b-447e-b2eb-1006de2a9941/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 07:38:43,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77fe4541-937b-447e-b2eb-1006de2a9941/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 07:38:43,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77fe4541-937b-447e-b2eb-1006de2a9941/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 07:38:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 07:38:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 07:38:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 07:38:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 07:38:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 07:38:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-11-21 07:38:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-11-21 07:38:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 07:38:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 07:38:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 07:38:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 07:38:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 07:38:43,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 07:38:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 07:38:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 07:38:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 07:38:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 07:38:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 07:38:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 07:38:43,782 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 07:38:44,055 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 07:38:44,061 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 07:38:44,531 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 07:38:44,612 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 07:38:44,621 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 07:38:44,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:38:44 BoogieIcfgContainer [2022-11-21 07:38:44,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 07:38:44,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 07:38:44,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 07:38:44,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 07:38:44,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:38:42" (1/3) ... [2022-11-21 07:38:44,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23482b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:38:44, skipping insertion in model container [2022-11-21 07:38:44,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:38:43" (2/3) ... [2022-11-21 07:38:44,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23482b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:38:44, skipping insertion in model container [2022-11-21 07:38:44,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:38:44" (3/3) ... [2022-11-21 07:38:44,643 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton.i [2022-11-21 07:38:44,654 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 07:38:44,667 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 07:38:44,668 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-11-21 07:38:44,668 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 07:38:44,951 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2022-11-21 07:38:45,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 272 transitions, 651 flow [2022-11-21 07:38:45,187 INFO L130 PetriNetUnfolder]: 6/185 cut-off events. [2022-11-21 07:38:45,188 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-21 07:38:45,196 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. [2022-11-21 07:38:45,196 INFO L82 GeneralOperation]: Start removeDead. Operand has 282 places, 272 transitions, 651 flow [2022-11-21 07:38:45,209 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 168 transitions, 387 flow [2022-11-21 07:38:45,229 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 07:38:45,238 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;@51e18f0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 07:38:45,239 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-21 07:38:45,262 INFO L130 PetriNetUnfolder]: 0/33 cut-off events. [2022-11-21 07:38:45,262 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 07:38:45,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 07:38:45,265 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] [2022-11-21 07:38:45,266 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)] === [2022-11-21 07:38:45,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 07:38:45,274 INFO L85 PathProgramCache]: Analyzing trace with hash -59342021, now seen corresponding path program 1 times [2022-11-21 07:38:45,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 07:38:45,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405067704] [2022-11-21 07:38:45,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 07:38:45,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 07:38:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 07:38:46,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 07:38:46,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 07:38:46,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405067704] [2022-11-21 07:38:46,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405067704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 07:38:46,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 07:38:46,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 07:38:46,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98044407] [2022-11-21 07:38:46,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 07:38:46,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 07:38:46,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 07:38:46,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 07:38:46,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 07:38:46,473 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 274 [2022-11-21 07:38:46,482 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) [2022-11-21 07:38:46,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 07:38:46,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 274 [2022-11-21 07:38:46,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 07:38:50,324 INFO L130 PetriNetUnfolder]: 6956/11018 cut-off events. [2022-11-21 07:38:50,325 INFO L131 PetriNetUnfolder]: For 548/592 co-relation queries the response was YES. [2022-11-21 07:38:50,374 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. [2022-11-21 07:38:50,468 INFO L137 encePairwiseOnDemand]: 256/274 looper letters, 245 selfloop transitions, 21 changer transitions 0/363 dead transitions. [2022-11-21 07:38:50,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 363 transitions, 1492 flow [2022-11-21 07:38:50,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 07:38:50,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 07:38:50,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1267 transitions. [2022-11-21 07:38:50,496 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7706812652068127 [2022-11-21 07:38:50,497 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1267 transitions. [2022-11-21 07:38:50,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1267 transitions. [2022-11-21 07:38:50,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 07:38:50,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1267 transitions. [2022-11-21 07:38:50,516 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) [2022-11-21 07:38:50,527 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) [2022-11-21 07:38:50,528 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) [2022-11-21 07:38:50,531 INFO L175 Difference]: Start difference. First operand has 182 places, 168 transitions, 387 flow. Second operand 6 states and 1267 transitions. [2022-11-21 07:38:50,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 363 transitions, 1492 flow [2022-11-21 07:38:50,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 363 transitions, 1336 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-21 07:38:50,559 INFO L231 Difference]: Finished difference. Result has 172 places, 180 transitions, 479 flow [2022-11-21 07:38:50,562 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} [2022-11-21 07:38:50,566 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, -10 predicate places. [2022-11-21 07:38:50,567 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 180 transitions, 479 flow [2022-11-21 07:38:50,568 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) [2022-11-21 07:38:50,568 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 07:38:50,568 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] [2022-11-21 07:38:50,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 07:38:50,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-21 07:38:50,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 07:38:50,570 INFO L85 PathProgramCache]: Analyzing trace with hash 21299019, now seen corresponding path program 1 times [2022-11-21 07:38:50,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 07:38:50,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82675439] [2022-11-21 07:38:50,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 07:38:50,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 07:38:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 07:38:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 07:38:50,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 07:38:50,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82675439] [2022-11-21 07:38:50,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82675439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 07:38:50,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 07:38:50,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 07:38:50,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458963724] [2022-11-21 07:38:50,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 07:38:50,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 07:38:50,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 07:38:50,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 07:38:50,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 07:38:50,649 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 274 [2022-11-21 07:38:50,650 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) [2022-11-21 07:38:50,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 07:38:50,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 274 [2022-11-21 07:38:50,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 07:38:51,194 INFO L130 PetriNetUnfolder]: 778/2150 cut-off events. [2022-11-21 07:38:51,194 INFO L131 PetriNetUnfolder]: For 1158/1340 co-relation queries the response was YES. [2022-11-21 07:38:51,209 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. [2022-11-21 07:38:51,226 INFO L137 encePairwiseOnDemand]: 271/274 looper letters, 42 selfloop transitions, 2 changer transitions 0/179 dead transitions. [2022-11-21 07:38:51,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 179 transitions, 565 flow [2022-11-21 07:38:51,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 07:38:51,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 07:38:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 692 transitions. [2022-11-21 07:38:51,229 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8418491484184915 [2022-11-21 07:38:51,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 692 transitions. [2022-11-21 07:38:51,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 692 transitions. [2022-11-21 07:38:51,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 07:38:51,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 692 transitions. [2022-11-21 07:38:51,233 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) [2022-11-21 07:38:51,235 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) [2022-11-21 07:38:51,236 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) [2022-11-21 07:38:51,237 INFO L175 Difference]: Start difference. First operand has 172 places, 180 transitions, 479 flow. Second operand 3 states and 692 transitions. [2022-11-21 07:38:51,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 179 transitions, 565 flow [2022-11-21 07:38:51,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 179 transitions, 565 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 07:38:51,308 INFO L231 Difference]: Finished difference. Result has 173 places, 179 transitions, 481 flow [2022-11-21 07:38:51,309 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} [2022-11-21 07:38:51,310 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, -9 predicate places. [2022-11-21 07:38:51,310 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 179 transitions, 481 flow [2022-11-21 07:38:51,311 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) [2022-11-21 07:38:51,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 07:38:51,311 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] [2022-11-21 07:38:51,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 07:38:51,312 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread0Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err0ASSERT_VIOLATIONDATA_RACE, thread0Err1ASSERT_VIOLATIONDATA_RACE, thread0Err2ASSERT_VIOLATIONDATA_RACE, thread0Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2022-11-21 07:38:51,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 07:38:51,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1560345132, now seen corresponding path program 1 times [2022-11-21 07:38:51,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 07:38:51,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655305733] [2022-11-21 07:38:51,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 07:38:51,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 07:38:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 07:38:51,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 07:38:51,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 07:38:51,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655305733] [2022-11-21 07:38:51,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655305733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 07:38:51,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 07:38:51,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 07:38:51,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786556480] [2022-11-21 07:38:51,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 07:38:51,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 07:38:51,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 07:38:51,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 07:38:51,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 07:38:51,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 274 [2022-11-21 07:38:51,858 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) [2022-11-21 07:38:51,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 07:38:51,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 274 [2022-11-21 07:38:51,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 07:38:54,560 INFO L130 PetriNetUnfolder]: 6392/10591 cut-off events. [2022-11-21 07:38:54,561 INFO L131 PetriNetUnfolder]: For 10529/10565 co-relation queries the response was YES. [2022-11-21 07:38:54,597 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. [2022-11-21 07:38:54,676 INFO L137 encePairwiseOnDemand]: 265/274 looper letters, 108 selfloop transitions, 24 changer transitions 0/227 dead transitions. [2022-11-21 07:38:54,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 227 transitions, 988 flow [2022-11-21 07:38:54,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 07:38:54,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 07:38:54,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1063 transitions. [2022-11-21 07:38:54,681 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6465936739659367 [2022-11-21 07:38:54,681 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1063 transitions. [2022-11-21 07:38:54,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1063 transitions. [2022-11-21 07:38:54,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 07:38:54,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1063 transitions. [2022-11-21 07:38:54,686 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) [2022-11-21 07:38:54,690 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) [2022-11-21 07:38:54,691 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) [2022-11-21 07:38:54,692 INFO L175 Difference]: Start difference. First operand has 173 places, 179 transitions, 481 flow. Second operand 6 states and 1063 transitions. [2022-11-21 07:38:54,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 227 transitions, 988 flow [2022-11-21 07:38:54,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 227 transitions, 984 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 07:38:54,723 INFO L231 Difference]: Finished difference. Result has 176 places, 198 transitions, 696 flow [2022-11-21 07:38:54,724 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} [2022-11-21 07:38:54,726 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, -6 predicate places. [2022-11-21 07:38:54,726 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 198 transitions, 696 flow [2022-11-21 07:38:54,727 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) [2022-11-21 07:38:54,727 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 07:38:54,727 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] [2022-11-21 07:38:54,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 07:38:54,728 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)] === [2022-11-21 07:38:54,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 07:38:54,729 INFO L85 PathProgramCache]: Analyzing trace with hash -953857843, now seen corresponding path program 1 times [2022-11-21 07:38:54,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 07:38:54,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045033382] [2022-11-21 07:38:54,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 07:38:54,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 07:38:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 07:38:56,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 07:38:56,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 07:38:56,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045033382] [2022-11-21 07:38:56,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045033382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 07:38:56,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 07:38:56,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 07:38:56,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951149863] [2022-11-21 07:38:56,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 07:38:56,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 07:38:56,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 07:38:56,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 07:38:56,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-21 07:38:56,252 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 274 [2022-11-21 07:38:56,262 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) [2022-11-21 07:38:56,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 07:38:56,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 274 [2022-11-21 07:38:56,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 07:39:02,296 INFO L130 PetriNetUnfolder]: 9736/16108 cut-off events. [2022-11-21 07:39:02,297 INFO L131 PetriNetUnfolder]: For 21089/21122 co-relation queries the response was YES. [2022-11-21 07:39:02,344 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. [2022-11-21 07:39:02,451 INFO L137 encePairwiseOnDemand]: 256/274 looper letters, 477 selfloop transitions, 92 changer transitions 0/643 dead transitions. [2022-11-21 07:39:02,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 643 transitions, 3353 flow [2022-11-21 07:39:02,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 07:39:02,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 07:39:02,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2901 transitions. [2022-11-21 07:39:02,467 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5881995133819952 [2022-11-21 07:39:02,467 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2901 transitions. [2022-11-21 07:39:02,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2901 transitions. [2022-11-21 07:39:02,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 07:39:02,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2901 transitions. [2022-11-21 07:39:02,480 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) [2022-11-21 07:39:02,495 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) [2022-11-21 07:39:02,498 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) [2022-11-21 07:39:02,499 INFO L175 Difference]: Start difference. First operand has 176 places, 198 transitions, 696 flow. Second operand 18 states and 2901 transitions. [2022-11-21 07:39:02,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 643 transitions, 3353 flow [2022-11-21 07:39:02,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 643 transitions, 3202 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 07:39:02,673 INFO L231 Difference]: Finished difference. Result has 204 places, 269 transitions, 1562 flow [2022-11-21 07:39:02,673 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} [2022-11-21 07:39:02,674 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 22 predicate places. [2022-11-21 07:39:02,675 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 269 transitions, 1562 flow [2022-11-21 07:39:02,676 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) [2022-11-21 07:39:02,676 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 07:39:02,676 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] [2022-11-21 07:39:02,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 07:39:02,677 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)] === [2022-11-21 07:39:02,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 07:39:02,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1899085895, now seen corresponding path program 2 times [2022-11-21 07:39:02,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 07:39:02,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174984924] [2022-11-21 07:39:02,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 07:39:02,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 07:39:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 07:39:03,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 07:39:03,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 07:39:03,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174984924] [2022-11-21 07:39:03,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174984924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 07:39:03,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 07:39:03,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 07:39:03,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302742505] [2022-11-21 07:39:03,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 07:39:03,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 07:39:03,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 07:39:03,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 07:39:03,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-21 07:39:03,293 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 274 [2022-11-21 07:39:03,295 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) [2022-11-21 07:39:03,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 07:39:03,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 274 [2022-11-21 07:39:03,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 07:39:09,659 INFO L130 PetriNetUnfolder]: 11963/20463 cut-off events. [2022-11-21 07:39:09,659 INFO L131 PetriNetUnfolder]: For 51211/51261 co-relation queries the response was YES. [2022-11-21 07:39:09,769 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. [2022-11-21 07:39:09,908 INFO L137 encePairwiseOnDemand]: 264/274 looper letters, 449 selfloop transitions, 45 changer transitions 0/585 dead transitions. [2022-11-21 07:39:09,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 585 transitions, 3872 flow [2022-11-21 07:39:09,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 07:39:09,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 07:39:09,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2729 transitions. [2022-11-21 07:39:09,917 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6224908759124088 [2022-11-21 07:39:09,917 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2729 transitions. [2022-11-21 07:39:09,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2729 transitions. [2022-11-21 07:39:09,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 07:39:09,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2729 transitions. [2022-11-21 07:39:09,927 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) [2022-11-21 07:39:09,935 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) [2022-11-21 07:39:09,938 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) [2022-11-21 07:39:09,938 INFO L175 Difference]: Start difference. First operand has 204 places, 269 transitions, 1562 flow. Second operand 16 states and 2729 transitions. [2022-11-21 07:39:09,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 585 transitions, 3872 flow [2022-11-21 07:39:10,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 585 transitions, 3852 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-11-21 07:39:10,404 INFO L231 Difference]: Finished difference. Result has 228 places, 301 transitions, 1958 flow [2022-11-21 07:39:10,405 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} [2022-11-21 07:39:10,406 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 46 predicate places. [2022-11-21 07:39:10,406 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 301 transitions, 1958 flow [2022-11-21 07:39:10,407 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) [2022-11-21 07:39:10,408 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 07:39:10,408 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] [2022-11-21 07:39:10,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 07:39:10,409 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)] === [2022-11-21 07:39:10,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 07:39:10,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1514701539, now seen corresponding path program 3 times [2022-11-21 07:39:10,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 07:39:10,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270687965] [2022-11-21 07:39:10,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 07:39:10,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 07:39:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 07:39:11,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 07:39:11,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 07:39:11,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270687965] [2022-11-21 07:39:11,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270687965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 07:39:11,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 07:39:11,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 07:39:11,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380752960] [2022-11-21 07:39:11,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 07:39:11,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 07:39:11,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 07:39:11,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 07:39:11,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-21 07:39:11,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 274 [2022-11-21 07:39:11,702 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) [2022-11-21 07:39:11,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 07:39:11,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 274 [2022-11-21 07:39:11,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 07:39:18,652 INFO L130 PetriNetUnfolder]: 13882/23856 cut-off events. [2022-11-21 07:39:18,652 INFO L131 PetriNetUnfolder]: For 87082/87159 co-relation queries the response was YES. [2022-11-21 07:39:18,867 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. [2022-11-21 07:39:19,146 INFO L137 encePairwiseOnDemand]: 257/274 looper letters, 492 selfloop transitions, 117 changer transitions 0/683 dead transitions. [2022-11-21 07:39:19,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 683 transitions, 4826 flow [2022-11-21 07:39:19,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 07:39:19,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 07:39:19,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2424 transitions. [2022-11-21 07:39:19,154 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5897810218978102 [2022-11-21 07:39:19,155 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2424 transitions. [2022-11-21 07:39:19,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2424 transitions. [2022-11-21 07:39:19,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 07:39:19,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2424 transitions. [2022-11-21 07:39:19,163 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) [2022-11-21 07:39:19,171 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) [2022-11-21 07:39:19,174 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) [2022-11-21 07:39:19,174 INFO L175 Difference]: Start difference. First operand has 228 places, 301 transitions, 1958 flow. Second operand 15 states and 2424 transitions. [2022-11-21 07:39:19,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 683 transitions, 4826 flow [2022-11-21 07:39:19,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 683 transitions, 4729 flow, removed 38 selfloop flow, removed 2 redundant places. [2022-11-21 07:39:19,911 INFO L231 Difference]: Finished difference. Result has 252 places, 358 transitions, 3006 flow [2022-11-21 07:39:19,912 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} [2022-11-21 07:39:19,913 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 70 predicate places. [2022-11-21 07:39:19,913 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 358 transitions, 3006 flow [2022-11-21 07:39:19,914 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) [2022-11-21 07:39:19,914 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 07:39:19,914 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] [2022-11-21 07:39:19,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 07:39:19,915 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)] === [2022-11-21 07:39:19,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 07:39:19,916 INFO L85 PathProgramCache]: Analyzing trace with hash -247823929, now seen corresponding path program 4 times [2022-11-21 07:39:19,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 07:39:19,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925082824] [2022-11-21 07:39:19,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 07:39:19,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 07:39:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 07:39:20,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 07:39:20,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 07:39:20,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925082824] [2022-11-21 07:39:20,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925082824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 07:39:20,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 07:39:20,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 07:39:20,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144662874] [2022-11-21 07:39:20,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 07:39:20,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 07:39:20,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 07:39:20,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 07:39:20,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-21 07:39:20,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 274 [2022-11-21 07:39:20,480 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) [2022-11-21 07:39:20,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 07:39:20,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 274 [2022-11-21 07:39:20,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 07:39:30,512 INFO L130 PetriNetUnfolder]: 19927/34595 cut-off events. [2022-11-21 07:39:30,512 INFO L131 PetriNetUnfolder]: For 191998/192121 co-relation queries the response was YES. [2022-11-21 07:39:30,780 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. [2022-11-21 07:39:30,981 INFO L137 encePairwiseOnDemand]: 260/274 looper letters, 530 selfloop transitions, 108 changer transitions 0/740 dead transitions. [2022-11-21 07:39:30,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 740 transitions, 6457 flow [2022-11-21 07:39:30,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 07:39:30,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 07:39:30,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2627 transitions. [2022-11-21 07:39:30,993 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6391727493917275 [2022-11-21 07:39:30,993 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2627 transitions. [2022-11-21 07:39:30,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2627 transitions. [2022-11-21 07:39:30,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 07:39:30,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2627 transitions. [2022-11-21 07:39:31,001 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) [2022-11-21 07:39:31,009 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) [2022-11-21 07:39:31,011 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) [2022-11-21 07:39:31,011 INFO L175 Difference]: Start difference. First operand has 252 places, 358 transitions, 3006 flow. Second operand 15 states and 2627 transitions. [2022-11-21 07:39:31,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 740 transitions, 6457 flow [2022-11-21 07:39:32,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 740 transitions, 6256 flow, removed 35 selfloop flow, removed 2 redundant places. [2022-11-21 07:39:32,292 INFO L231 Difference]: Finished difference. Result has 274 places, 410 transitions, 3980 flow [2022-11-21 07:39:32,293 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} [2022-11-21 07:39:32,294 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 92 predicate places. [2022-11-21 07:39:32,294 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 410 transitions, 3980 flow [2022-11-21 07:39:32,295 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) [2022-11-21 07:39:32,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 07:39:32,296 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] [2022-11-21 07:39:32,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 07:39:32,296 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)] === [2022-11-21 07:39:32,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 07:39:32,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1496184487, now seen corresponding path program 5 times [2022-11-21 07:39:32,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 07:39:32,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242631461] [2022-11-21 07:39:32,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 07:39:32,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 07:39:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 07:39:33,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 07:39:33,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 07:39:33,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242631461] [2022-11-21 07:39:33,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242631461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 07:39:33,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 07:39:33,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 07:39:33,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111454230] [2022-11-21 07:39:33,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 07:39:33,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 07:39:33,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 07:39:33,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 07:39:33,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-21 07:39:33,160 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 274 [2022-11-21 07:39:33,162 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) [2022-11-21 07:39:33,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 07:39:33,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 274 [2022-11-21 07:39:33,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 07:39:47,498 INFO L130 PetriNetUnfolder]: 25833/44844 cut-off events. [2022-11-21 07:39:47,498 INFO L131 PetriNetUnfolder]: For 253563/253829 co-relation queries the response was YES. [2022-11-21 07:39:47,982 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. [2022-11-21 07:39:48,211 INFO L137 encePairwiseOnDemand]: 257/274 looper letters, 625 selfloop transitions, 184 changer transitions 0/883 dead transitions. [2022-11-21 07:39:48,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 883 transitions, 8148 flow [2022-11-21 07:39:48,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 07:39:48,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-21 07:39:48,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3163 transitions. [2022-11-21 07:39:48,223 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5771897810218978 [2022-11-21 07:39:48,223 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3163 transitions. [2022-11-21 07:39:48,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3163 transitions. [2022-11-21 07:39:48,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 07:39:48,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3163 transitions. [2022-11-21 07:39:48,233 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) [2022-11-21 07:39:48,244 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) [2022-11-21 07:39:48,247 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) [2022-11-21 07:39:48,247 INFO L175 Difference]: Start difference. First operand has 274 places, 410 transitions, 3980 flow. Second operand 20 states and 3163 transitions. [2022-11-21 07:39:48,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 883 transitions, 8148 flow [2022-11-21 07:39:52,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 883 transitions, 8081 flow, removed 33 selfloop flow, removed 1 redundant places. [2022-11-21 07:39:52,080 INFO L231 Difference]: Finished difference. Result has 308 places, 480 transitions, 5635 flow [2022-11-21 07:39:52,081 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} [2022-11-21 07:39:52,082 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 126 predicate places. [2022-11-21 07:39:52,082 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 480 transitions, 5635 flow [2022-11-21 07:39:52,083 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) [2022-11-21 07:39:52,083 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 07:39:52,084 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] [2022-11-21 07:39:52,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 07:39:52,084 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)] === [2022-11-21 07:39:52,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 07:39:52,085 INFO L85 PathProgramCache]: Analyzing trace with hash -180243206, now seen corresponding path program 1 times [2022-11-21 07:39:52,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 07:39:52,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292018070] [2022-11-21 07:39:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 07:39:52,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 07:39:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 07:39:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 07:39:52,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 07:39:52,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292018070] [2022-11-21 07:39:52,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292018070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 07:39:52,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 07:39:52,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 07:39:52,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817676546] [2022-11-21 07:39:52,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 07:39:52,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 07:39:52,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 07:39:52,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 07:39:52,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-21 07:39:52,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 274 [2022-11-21 07:39:52,667 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) [2022-11-21 07:39:52,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 07:39:52,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 274 [2022-11-21 07:39:52,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand