./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 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_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8 --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 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d --- 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-2329fc7 [2022-12-13 11:36:04,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:36:04,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:36:04,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:36:04,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:36:04,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:36:04,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:36:04,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:36:04,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:36:04,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:36:04,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:36:04,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:36:04,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:36:04,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:36:04,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:36:04,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:36:04,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:36:04,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:36:04,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:36:04,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:36:04,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:36:04,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:36:04,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:36:04,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:36:04,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:36:04,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:36:04,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:36:04,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:36:04,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:36:04,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:36:04,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:36:04,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:36:04,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:36:04,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:36:04,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:36:04,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:36:04,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:36:04,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:36:04,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:36:04,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:36:04,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:36:04,883 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 11:36:04,902 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:36:04,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:36:04,903 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:36:04,903 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:36:04,904 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:36:04,904 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:36:04,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:36:04,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:36:04,905 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:36:04,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:36:04,905 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:36:04,905 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:36:04,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:36:04,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:36:04,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:36:04,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:36:04,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:36:04,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:36:04,906 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 11:36:04,907 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:36:04,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:36:04,907 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:36:04,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:36:04,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:36:04,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:36:04,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:36:04,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:36:04,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:36:04,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:36:04,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:36:04,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:36:04,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:36:04,909 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:36:04,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:36:04,909 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:36:04,909 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:36:04,909 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:36:04,909 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d [2022-12-13 11:36:05,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:36:05,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:36:05,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:36:05,115 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:36:05,115 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:36:05,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2022-12-13 11:36:07,687 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:36:07,899 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:36:07,900 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2022-12-13 11:36:07,912 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/data/8b158c11a/1161cc75cc474116909e1b6d9a2ecff9/FLAGcb1207af4 [2022-12-13 11:36:07,926 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/data/8b158c11a/1161cc75cc474116909e1b6d9a2ecff9 [2022-12-13 11:36:07,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:36:07,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:36:07,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:36:07,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:36:07,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:36:07,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:36:07" (1/1) ... [2022-12-13 11:36:07,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cb61bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:36:07, skipping insertion in model container [2022-12-13 11:36:07,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:36:07" (1/1) ... [2022-12-13 11:36:07,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:36:07,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:36:08,296 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_bda51d95-18e4-4f00-a85f-352884d8e170/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i[41323,41336] [2022-12-13 11:36:08,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:36:08,326 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:36:08,352 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_bda51d95-18e4-4f00-a85f-352884d8e170/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i[41323,41336] [2022-12-13 11:36:08,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:36:08,397 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:36:08,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:36:08 WrapperNode [2022-12-13 11:36:08,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:36:08,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:36:08,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:36:08,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:36:08,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:36:08" (1/1) ... [2022-12-13 11:36:08,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:36:08" (1/1) ... [2022-12-13 11:36:08,433 INFO L138 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 185 [2022-12-13 11:36:08,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:36:08,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:36:08,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:36:08,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:36:08,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:36:08" (1/1) ... [2022-12-13 11:36:08,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:36:08" (1/1) ... [2022-12-13 11:36:08,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:36:08" (1/1) ... [2022-12-13 11:36:08,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:36:08" (1/1) ... [2022-12-13 11:36:08,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:36:08" (1/1) ... [2022-12-13 11:36:08,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:36:08" (1/1) ... [2022-12-13 11:36:08,453 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:36:08" (1/1) ... [2022-12-13 11:36:08,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:36:08" (1/1) ... [2022-12-13 11:36:08,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:36:08,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:36:08,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:36:08,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:36:08,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:36:08" (1/1) ... [2022-12-13 11:36:08,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:36:08,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:36:08,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:36:08,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:36:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:36:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:36:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:36:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:36:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 11:36:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:36:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 11:36:08,522 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 11:36:08,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:36:08,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:36:08,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:36:08,523 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 11:36:08,623 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:36:08,625 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:36:08,863 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:36:08,870 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:36:08,870 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-12-13 11:36:08,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:36:08 BoogieIcfgContainer [2022-12-13 11:36:08,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:36:08,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:36:08,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:36:08,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:36:08,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:36:07" (1/3) ... [2022-12-13 11:36:08,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b5d993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:36:08, skipping insertion in model container [2022-12-13 11:36:08,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:36:08" (2/3) ... [2022-12-13 11:36:08,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b5d993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:36:08, skipping insertion in model container [2022-12-13 11:36:08,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:36:08" (3/3) ... [2022-12-13 11:36:08,878 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2022-12-13 11:36:08,884 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 11:36:08,892 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:36:08,892 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-13 11:36:08,892 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:36:08,950 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 11:36:08,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 203 transitions, 414 flow [2022-12-13 11:36:09,048 INFO L130 PetriNetUnfolder]: 24/256 cut-off events. [2022-12-13 11:36:09,048 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:36:09,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 256 events. 24/256 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 880 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 159. Up to 4 conditions per place. [2022-12-13 11:36:09,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 203 transitions, 414 flow [2022-12-13 11:36:09,058 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 203 transitions, 414 flow [2022-12-13 11:36:09,060 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:36:09,068 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 187 places, 203 transitions, 414 flow [2022-12-13 11:36:09,070 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 187 places, 203 transitions, 414 flow [2022-12-13 11:36:09,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 203 transitions, 414 flow [2022-12-13 11:36:09,103 INFO L130 PetriNetUnfolder]: 24/256 cut-off events. [2022-12-13 11:36:09,103 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:36:09,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 256 events. 24/256 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 880 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 159. Up to 4 conditions per place. [2022-12-13 11:36:09,109 INFO L119 LiptonReduction]: Number of co-enabled transitions 11918 [2022-12-13 11:36:11,728 INFO L134 LiptonReduction]: Checked pairs total: 32868 [2022-12-13 11:36:11,728 INFO L136 LiptonReduction]: Total number of compositions: 138 [2022-12-13 11:36:11,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:36:11,749 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;@7588094a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:36:11,749 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-13 11:36:11,753 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2022-12-13 11:36:11,753 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:36:11,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:36:11,754 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:36:11,754 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-12-13 11:36:11,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:36:11,759 INFO L85 PathProgramCache]: Analyzing trace with hash 718773956, now seen corresponding path program 1 times [2022-12-13 11:36:11,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:36:11,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796714614] [2022-12-13 11:36:11,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:36:11,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:36:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:11,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:36:11,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:36:11,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796714614] [2022-12-13 11:36:11,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796714614] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:36:11,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:36:11,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:36:11,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435929079] [2022-12-13 11:36:11,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:36:11,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:36:11,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:36:11,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:36:11,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:36:12,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 341 [2022-12-13 11:36:12,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 87 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 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) [2022-12-13 11:36:12,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:36:12,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 341 [2022-12-13 11:36:12,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:36:12,167 INFO L130 PetriNetUnfolder]: 313/874 cut-off events. [2022-12-13 11:36:12,168 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:36:12,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 874 events. 313/874 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5182 event pairs, 264 based on Foata normal form. 115/871 useless extension candidates. Maximal degree in co-relation 1511. Up to 629 conditions per place. [2022-12-13 11:36:12,172 INFO L137 encePairwiseOnDemand]: 322/341 looper letters, 65 selfloop transitions, 2 changer transitions 2/98 dead transitions. [2022-12-13 11:36:12,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 98 transitions, 342 flow [2022-12-13 11:36:12,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:36:12,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:36:12,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 635 transitions. [2022-12-13 11:36:12,184 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6207233626588465 [2022-12-13 11:36:12,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 635 transitions. [2022-12-13 11:36:12,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 635 transitions. [2022-12-13 11:36:12,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:36:12,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 635 transitions. [2022-12-13 11:36:12,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 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) [2022-12-13 11:36:12,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2022-12-13 11:36:12,200 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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) [2022-12-13 11:36:12,202 INFO L175 Difference]: Start difference. First operand has 73 places, 87 transitions, 182 flow. Second operand 3 states and 635 transitions. [2022-12-13 11:36:12,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 98 transitions, 342 flow [2022-12-13 11:36:12,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 98 transitions, 342 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:36:12,208 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 151 flow [2022-12-13 11:36:12,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2022-12-13 11:36:12,214 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 2 predicate places. [2022-12-13 11:36:12,214 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 151 flow [2022-12-13 11:36:12,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 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) [2022-12-13 11:36:12,215 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:36:12,215 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 11:36:12,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:36:12,216 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-12-13 11:36:12,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:36:12,216 INFO L85 PathProgramCache]: Analyzing trace with hash 827908328, now seen corresponding path program 1 times [2022-12-13 11:36:12,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:36:12,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868573368] [2022-12-13 11:36:12,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:36:12,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:36:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:36:12,248 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:36:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:36:12,284 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:36:12,284 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:36:12,286 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-12-13 11:36:12,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-12-13 11:36:12,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-12-13 11:36:12,288 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-12-13 11:36:12,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-12-13 11:36:12,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-12-13 11:36:12,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-12-13 11:36:12,289 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-12-13 11:36:12,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-12-13 11:36:12,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-12-13 11:36:12,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-12-13 11:36:12,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-12-13 11:36:12,290 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-12-13 11:36:12,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-12-13 11:36:12,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-12-13 11:36:12,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-12-13 11:36:12,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-12-13 11:36:12,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-12-13 11:36:12,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-12-13 11:36:12,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-12-13 11:36:12,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-12-13 11:36:12,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-12-13 11:36:12,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:36:12,293 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 11:36:12,296 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 11:36:12,296 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 11:36:12,329 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 11:36:12,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 306 transitions, 630 flow [2022-12-13 11:36:12,386 INFO L130 PetriNetUnfolder]: 45/443 cut-off events. [2022-12-13 11:36:12,386 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 11:36:12,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 443 events. 45/443 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1910 event pairs, 0 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 282. Up to 8 conditions per place. [2022-12-13 11:36:12,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 278 places, 306 transitions, 630 flow [2022-12-13 11:36:12,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 278 places, 306 transitions, 630 flow [2022-12-13 11:36:12,392 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:36:12,392 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 278 places, 306 transitions, 630 flow [2022-12-13 11:36:12,393 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 278 places, 306 transitions, 630 flow [2022-12-13 11:36:12,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 278 places, 306 transitions, 630 flow [2022-12-13 11:36:12,452 INFO L130 PetriNetUnfolder]: 45/443 cut-off events. [2022-12-13 11:36:12,452 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 11:36:12,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 443 events. 45/443 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1910 event pairs, 0 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 282. Up to 8 conditions per place. [2022-12-13 11:36:12,499 INFO L119 LiptonReduction]: Number of co-enabled transitions 46460 [2022-12-13 11:36:15,067 INFO L134 LiptonReduction]: Checked pairs total: 197401 [2022-12-13 11:36:15,067 INFO L136 LiptonReduction]: Total number of compositions: 187 [2022-12-13 11:36:15,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:36:15,070 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;@7588094a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:36:15,070 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-12-13 11:36:15,072 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2022-12-13 11:36:15,072 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:36:15,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:36:15,072 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:36:15,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-12-13 11:36:15,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:36:15,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1286742233, now seen corresponding path program 1 times [2022-12-13 11:36:15,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:36:15,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041962077] [2022-12-13 11:36:15,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:36:15,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:36:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:15,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:36:15,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:36:15,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041962077] [2022-12-13 11:36:15,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041962077] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:36:15,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:36:15,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:36:15,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634961241] [2022-12-13 11:36:15,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:36:15,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:36:15,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:36:15,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:36:15,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:36:15,128 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 493 [2022-12-13 11:36:15,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 159 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 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) [2022-12-13 11:36:15,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:36:15,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 493 [2022-12-13 11:36:15,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:36:17,153 INFO L130 PetriNetUnfolder]: 13074/27471 cut-off events. [2022-12-13 11:36:17,153 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-12-13 11:36:17,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47662 conditions, 27471 events. 13074/27471 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 274101 event pairs, 12116 based on Foata normal form. 3743/27807 useless extension candidates. Maximal degree in co-relation 20977. Up to 20034 conditions per place. [2022-12-13 11:36:17,278 INFO L137 encePairwiseOnDemand]: 462/493 looper letters, 85 selfloop transitions, 2 changer transitions 0/155 dead transitions. [2022-12-13 11:36:17,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 155 transitions, 502 flow [2022-12-13 11:36:17,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:36:17,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:36:17,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 932 transitions. [2022-12-13 11:36:17,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6301555104800541 [2022-12-13 11:36:17,282 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 932 transitions. [2022-12-13 11:36:17,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 932 transitions. [2022-12-13 11:36:17,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:36:17,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 932 transitions. [2022-12-13 11:36:17,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 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) [2022-12-13 11:36:17,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 493.0) internal successors, (1972), 4 states have internal predecessors, (1972), 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) [2022-12-13 11:36:17,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 493.0) internal successors, (1972), 4 states have internal predecessors, (1972), 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) [2022-12-13 11:36:17,288 INFO L175 Difference]: Start difference. First operand has 133 places, 159 transitions, 336 flow. Second operand 3 states and 932 transitions. [2022-12-13 11:36:17,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 155 transitions, 502 flow [2022-12-13 11:36:17,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 155 transitions, 502 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:36:17,292 INFO L231 Difference]: Finished difference. Result has 135 places, 132 transitions, 292 flow [2022-12-13 11:36:17,292 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=135, PETRI_TRANSITIONS=132} [2022-12-13 11:36:17,293 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 2 predicate places. [2022-12-13 11:36:17,293 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 132 transitions, 292 flow [2022-12-13 11:36:17,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 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) [2022-12-13 11:36:17,294 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:36:17,294 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 11:36:17,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:36:17,294 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-12-13 11:36:17,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:36:17,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1261601822, now seen corresponding path program 1 times [2022-12-13 11:36:17,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:36:17,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114558942] [2022-12-13 11:36:17,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:36:17,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:36:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:17,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:36:17,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:36:17,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114558942] [2022-12-13 11:36:17,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114558942] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:36:17,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:36:17,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:36:17,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668686464] [2022-12-13 11:36:17,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:36:17,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:36:17,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:36:17,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:36:17,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:36:17,332 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 493 [2022-12-13 11:36:17,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 132 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 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) [2022-12-13 11:36:17,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:36:17,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 493 [2022-12-13 11:36:17,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:36:20,791 INFO L130 PetriNetUnfolder]: 24797/51167 cut-off events. [2022-12-13 11:36:20,791 INFO L131 PetriNetUnfolder]: For 1381/1381 co-relation queries the response was YES. [2022-12-13 11:36:20,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90950 conditions, 51167 events. 24797/51167 cut-off events. For 1381/1381 co-relation queries the response was YES. Maximal size of possible extension queue 1415. Compared 548190 event pairs, 6913 based on Foata normal form. 0/45710 useless extension candidates. Maximal degree in co-relation 90763. Up to 23512 conditions per place. [2022-12-13 11:36:21,033 INFO L137 encePairwiseOnDemand]: 486/493 looper letters, 129 selfloop transitions, 5 changer transitions 0/197 dead transitions. [2022-12-13 11:36:21,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 197 transitions, 708 flow [2022-12-13 11:36:21,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:36:21,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:36:21,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 929 transitions. [2022-12-13 11:36:21,036 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6281271129141311 [2022-12-13 11:36:21,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 929 transitions. [2022-12-13 11:36:21,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 929 transitions. [2022-12-13 11:36:21,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:36:21,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 929 transitions. [2022-12-13 11:36:21,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 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) [2022-12-13 11:36:21,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 493.0) internal successors, (1972), 4 states have internal predecessors, (1972), 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) [2022-12-13 11:36:21,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 493.0) internal successors, (1972), 4 states have internal predecessors, (1972), 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) [2022-12-13 11:36:21,042 INFO L175 Difference]: Start difference. First operand has 135 places, 132 transitions, 292 flow. Second operand 3 states and 929 transitions. [2022-12-13 11:36:21,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 197 transitions, 708 flow [2022-12-13 11:36:21,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 197 transitions, 705 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:36:21,047 INFO L231 Difference]: Finished difference. Result has 138 places, 137 transitions, 334 flow [2022-12-13 11:36:21,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=138, PETRI_TRANSITIONS=137} [2022-12-13 11:36:21,047 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 5 predicate places. [2022-12-13 11:36:21,047 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 137 transitions, 334 flow [2022-12-13 11:36:21,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 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) [2022-12-13 11:36:21,048 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:36:21,048 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:36:21,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:36:21,048 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-12-13 11:36:21,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:36:21,049 INFO L85 PathProgramCache]: Analyzing trace with hash 2029334747, now seen corresponding path program 1 times [2022-12-13 11:36:21,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:36:21,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367684006] [2022-12-13 11:36:21,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:36:21,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:36:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:21,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:36:21,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:36:21,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367684006] [2022-12-13 11:36:21,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367684006] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:36:21,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320720927] [2022-12-13 11:36:21,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:36:21,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:36:21,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:36:21,093 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:36:21,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:36:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:21,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 11:36:21,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:36:21,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:36:21,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:36:21,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320720927] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:36:21,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:36:21,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-12-13 11:36:21,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273912095] [2022-12-13 11:36:21,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:36:21,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:36:21,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:36:21,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:36:21,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:36:21,182 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 493 [2022-12-13 11:36:21,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 137 transitions, 334 flow. Second operand has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 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) [2022-12-13 11:36:21,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:36:21,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 493 [2022-12-13 11:36:21,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:36:24,338 INFO L130 PetriNetUnfolder]: 25823/53266 cut-off events. [2022-12-13 11:36:24,338 INFO L131 PetriNetUnfolder]: For 4822/4822 co-relation queries the response was YES. [2022-12-13 11:36:24,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97556 conditions, 53266 events. 25823/53266 cut-off events. For 4822/4822 co-relation queries the response was YES. Maximal size of possible extension queue 1509. Compared 573032 event pairs, 20531 based on Foata normal form. 0/46491 useless extension candidates. Maximal degree in co-relation 30763. Up to 37134 conditions per place. [2022-12-13 11:36:24,550 INFO L137 encePairwiseOnDemand]: 488/493 looper letters, 111 selfloop transitions, 7 changer transitions 0/186 dead transitions. [2022-12-13 11:36:24,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 186 transitions, 680 flow [2022-12-13 11:36:24,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:36:24,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:36:24,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 905 transitions. [2022-12-13 11:36:24,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6118999323867478 [2022-12-13 11:36:24,554 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 905 transitions. [2022-12-13 11:36:24,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 905 transitions. [2022-12-13 11:36:24,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:36:24,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 905 transitions. [2022-12-13 11:36:24,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 301.6666666666667) internal successors, (905), 3 states have internal predecessors, (905), 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) [2022-12-13 11:36:24,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 493.0) internal successors, (1972), 4 states have internal predecessors, (1972), 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) [2022-12-13 11:36:24,560 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 493.0) internal successors, (1972), 4 states have internal predecessors, (1972), 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) [2022-12-13 11:36:24,560 INFO L175 Difference]: Start difference. First operand has 138 places, 137 transitions, 334 flow. Second operand 3 states and 905 transitions. [2022-12-13 11:36:24,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 186 transitions, 680 flow [2022-12-13 11:36:24,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 186 transitions, 666 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:36:24,577 INFO L231 Difference]: Finished difference. Result has 139 places, 142 transitions, 375 flow [2022-12-13 11:36:24,577 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=375, PETRI_PLACES=139, PETRI_TRANSITIONS=142} [2022-12-13 11:36:24,578 INFO L288 CegarLoopForPetriNet]: 133 programPoint places, 6 predicate places. [2022-12-13 11:36:24,578 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 142 transitions, 375 flow [2022-12-13 11:36:24,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 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) [2022-12-13 11:36:24,578 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:36:24,578 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 11:36:24,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:36:24,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:36:24,781 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2022-12-13 11:36:24,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:36:24,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1112328512, now seen corresponding path program 1 times [2022-12-13 11:36:24,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:36:24,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484122413] [2022-12-13 11:36:24,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:36:24,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:36:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:36:24,834 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:36:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:36:24,854 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:36:24,854 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:36:24,855 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2022-12-13 11:36:24,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2022-12-13 11:36:24,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2022-12-13 11:36:24,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2022-12-13 11:36:24,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2022-12-13 11:36:24,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2022-12-13 11:36:24,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2022-12-13 11:36:24,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2022-12-13 11:36:24,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2022-12-13 11:36:24,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2022-12-13 11:36:24,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2022-12-13 11:36:24,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2022-12-13 11:36:24,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2022-12-13 11:36:24,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2022-12-13 11:36:24,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2022-12-13 11:36:24,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2022-12-13 11:36:24,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2022-12-13 11:36:24,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2022-12-13 11:36:24,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2022-12-13 11:36:24,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2022-12-13 11:36:24,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2022-12-13 11:36:24,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2022-12-13 11:36:24,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2022-12-13 11:36:24,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2022-12-13 11:36:24,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2022-12-13 11:36:24,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2022-12-13 11:36:24,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2022-12-13 11:36:24,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2022-12-13 11:36:24,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2022-12-13 11:36:24,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2022-12-13 11:36:24,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2022-12-13 11:36:24,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:36:24,861 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 11:36:24,862 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 11:36:24,862 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 11:36:24,903 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 11:36:24,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 409 transitions, 848 flow [2022-12-13 11:36:25,043 INFO L130 PetriNetUnfolder]: 71/675 cut-off events. [2022-12-13 11:36:25,043 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 11:36:25,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 675 events. 71/675 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3228 event pairs, 1 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 451. Up to 16 conditions per place. [2022-12-13 11:36:25,048 INFO L82 GeneralOperation]: Start removeDead. Operand has 369 places, 409 transitions, 848 flow [2022-12-13 11:36:25,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 369 places, 409 transitions, 848 flow [2022-12-13 11:36:25,056 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:36:25,056 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 369 places, 409 transitions, 848 flow [2022-12-13 11:36:25,056 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 369 places, 409 transitions, 848 flow [2022-12-13 11:36:25,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 409 transitions, 848 flow [2022-12-13 11:36:25,169 INFO L130 PetriNetUnfolder]: 71/675 cut-off events. [2022-12-13 11:36:25,169 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 11:36:25,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 675 events. 71/675 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3228 event pairs, 1 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 451. Up to 16 conditions per place. [2022-12-13 11:36:25,208 INFO L119 LiptonReduction]: Number of co-enabled transitions 101202 [2022-12-13 11:36:28,282 INFO L134 LiptonReduction]: Checked pairs total: 464859 [2022-12-13 11:36:28,282 INFO L136 LiptonReduction]: Total number of compositions: 236 [2022-12-13 11:36:28,284 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:36:28,284 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;@7588094a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:36:28,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2022-12-13 11:36:28,286 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2022-12-13 11:36:28,286 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:36:28,286 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:36:28,286 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:36:28,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-12-13 11:36:28,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:36:28,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1999924303, now seen corresponding path program 1 times [2022-12-13 11:36:28,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:36:28,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794424654] [2022-12-13 11:36:28,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:36:28,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:36:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:28,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:36:28,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:36:28,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794424654] [2022-12-13 11:36:28,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794424654] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:36:28,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:36:28,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:36:28,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425886081] [2022-12-13 11:36:28,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:36:28,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:36:28,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:36:28,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:36:28,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:36:28,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 357 out of 645 [2022-12-13 11:36:28,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 225 transitions, 480 flow. Second operand has 3 states, 3 states have (on average 358.3333333333333) internal successors, (1075), 3 states have internal predecessors, (1075), 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) [2022-12-13 11:36:28,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:36:28,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 357 of 645 [2022-12-13 11:36:28,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:37:19,090 INFO L130 PetriNetUnfolder]: 446201/740517 cut-off events. [2022-12-13 11:37:19,090 INFO L131 PetriNetUnfolder]: For 5441/5441 co-relation queries the response was YES. [2022-12-13 11:37:20,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1346946 conditions, 740517 events. 446201/740517 cut-off events. For 5441/5441 co-relation queries the response was YES. Maximal size of possible extension queue 16878. Compared 8524928 event pairs, 411747 based on Foata normal form. 112078/770345 useless extension candidates. Maximal degree in co-relation 174811. Up to 602440 conditions per place. [2022-12-13 11:37:23,501 INFO L137 encePairwiseOnDemand]: 602/645 looper letters, 110 selfloop transitions, 2 changer transitions 0/210 dead transitions. [2022-12-13 11:37:23,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 210 transitions, 674 flow [2022-12-13 11:37:23,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:37:23,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:37:23,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1236 transitions. [2022-12-13 11:37:23,505 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6387596899224807 [2022-12-13 11:37:23,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1236 transitions. [2022-12-13 11:37:23,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1236 transitions. [2022-12-13 11:37:23,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:37:23,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1236 transitions. [2022-12-13 11:37:23,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 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) [2022-12-13 11:37:23,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 645.0) internal successors, (2580), 4 states have internal predecessors, (2580), 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) [2022-12-13 11:37:23,511 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 645.0) internal successors, (2580), 4 states have internal predecessors, (2580), 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) [2022-12-13 11:37:23,511 INFO L175 Difference]: Start difference. First operand has 187 places, 225 transitions, 480 flow. Second operand 3 states and 1236 transitions. [2022-12-13 11:37:23,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 210 transitions, 674 flow [2022-12-13 11:37:23,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 210 transitions, 674 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:37:23,517 INFO L231 Difference]: Finished difference. Result has 189 places, 186 transitions, 412 flow [2022-12-13 11:37:23,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=645, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=189, PETRI_TRANSITIONS=186} [2022-12-13 11:37:23,518 INFO L288 CegarLoopForPetriNet]: 187 programPoint places, 2 predicate places. [2022-12-13 11:37:23,519 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 186 transitions, 412 flow [2022-12-13 11:37:23,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 358.3333333333333) internal successors, (1075), 3 states have internal predecessors, (1075), 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) [2022-12-13 11:37:23,520 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:37:23,520 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 11:37:23,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:37:23,520 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-12-13 11:37:23,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:23,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1918290418, now seen corresponding path program 1 times [2022-12-13 11:37:23,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:23,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129692190] [2022-12-13 11:37:23,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:23,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:37:23,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:23,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129692190] [2022-12-13 11:37:23,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129692190] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:37:23,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:37:23,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:37:23,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586831317] [2022-12-13 11:37:23,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:37:23,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:37:23,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:23,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:37:23,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:37:23,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 645 [2022-12-13 11:37:23,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 186 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 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) [2022-12-13 11:37:23,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:37:23,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 645 [2022-12-13 11:37:23,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:39:11,605 INFO L130 PetriNetUnfolder]: 959753/1589503 cut-off events. [2022-12-13 11:39:11,605 INFO L131 PetriNetUnfolder]: For 37189/37189 co-relation queries the response was YES. [2022-12-13 11:39:15,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2928536 conditions, 1589503 events. 959753/1589503 cut-off events. For 37189/37189 co-relation queries the response was YES. Maximal size of possible extension queue 32288. Compared 19467597 event pairs, 364105 based on Foata normal form. 0/1429062 useless extension candidates. Maximal degree in co-relation 2928348. Up to 803686 conditions per place. [2022-12-13 11:39:20,819 INFO L137 encePairwiseOnDemand]: 635/645 looper letters, 180 selfloop transitions, 7 changer transitions 0/277 dead transitions. [2022-12-13 11:39:20,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 277 transitions, 996 flow [2022-12-13 11:39:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:39:20,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:39:20,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1241 transitions. [2022-12-13 11:39:20,822 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.641343669250646 [2022-12-13 11:39:20,822 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1241 transitions. [2022-12-13 11:39:20,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1241 transitions. [2022-12-13 11:39:20,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:39:20,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1241 transitions. [2022-12-13 11:39:20,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 413.6666666666667) internal successors, (1241), 3 states have internal predecessors, (1241), 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) [2022-12-13 11:39:20,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 645.0) internal successors, (2580), 4 states have internal predecessors, (2580), 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) [2022-12-13 11:39:20,828 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 645.0) internal successors, (2580), 4 states have internal predecessors, (2580), 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) [2022-12-13 11:39:20,828 INFO L175 Difference]: Start difference. First operand has 189 places, 186 transitions, 412 flow. Second operand 3 states and 1241 transitions. [2022-12-13 11:39:20,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 277 transitions, 996 flow [2022-12-13 11:39:20,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 277 transitions, 993 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:39:20,915 INFO L231 Difference]: Finished difference. Result has 192 places, 193 transitions, 472 flow [2022-12-13 11:39:20,915 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=645, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=472, PETRI_PLACES=192, PETRI_TRANSITIONS=193} [2022-12-13 11:39:20,915 INFO L288 CegarLoopForPetriNet]: 187 programPoint places, 5 predicate places. [2022-12-13 11:39:20,915 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 193 transitions, 472 flow [2022-12-13 11:39:20,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 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) [2022-12-13 11:39:20,916 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:39:20,916 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:39:20,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:39:20,916 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-12-13 11:39:20,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:39:20,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1755346257, now seen corresponding path program 1 times [2022-12-13 11:39:20,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:39:20,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569015378] [2022-12-13 11:39:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:39:20,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:39:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:20,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:39:20,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:39:20,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569015378] [2022-12-13 11:39:20,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569015378] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:39:20,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402573324] [2022-12-13 11:39:20,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:39:20,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:39:20,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:39:20,945 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:39:20,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bda51d95-18e4-4f00-a85f-352884d8e170/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:39:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 11:39:21,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:39:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:39:21,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:39:21,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402573324] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:39:21,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:39:21,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-12-13 11:39:21,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492353868] [2022-12-13 11:39:21,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:39:21,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:39:21,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:39:21,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:39:21,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:39:21,034 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 352 out of 645 [2022-12-13 11:39:21,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 193 transitions, 472 flow. Second operand has 3 states, 3 states have (on average 354.6666666666667) internal successors, (1064), 3 states have internal predecessors, (1064), 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) [2022-12-13 11:39:21,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:39:21,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 352 of 645 [2022-12-13 11:39:21,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand