./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/ldv-races/race-4_2-thread_local_vars.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e04fb08f 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_3cb9d6c6-2455-4882-a671-44295de069b0/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb9d6c6-2455-4882-a671-44295de069b0/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb9d6c6-2455-4882-a671-44295de069b0/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb9d6c6-2455-4882-a671-44295de069b0/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-4_2-thread_local_vars.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb9d6c6-2455-4882-a671-44295de069b0/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb9d6c6-2455-4882-a671-44295de069b0/bin/uautomizer-tPACEb0tL8 --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 0f799b8cb369af433cd7b4f4a2ae1c7efd2306d185f06da0302d2727c00c6bf0 --- 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-e04fb08 [2022-11-16 12:07:26,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:07:26,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:07:26,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:07:26,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:07:26,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:07:26,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:07:26,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:07:26,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:07:26,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:07:26,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:07:26,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:07:26,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:07:26,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:07:26,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:07:26,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:07:26,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:07:26,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:07:26,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:07:26,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:07:26,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:07:26,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:07:26,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:07:26,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:07:26,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:07:26,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:07:26,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:07:26,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:07:26,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:07:26,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:07:26,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:07:26,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:07:26,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:07:26,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:07:26,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:07:26,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:07:26,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:07:26,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:07:26,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:07:26,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:07:26,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:07:26,233 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb9d6c6-2455-4882-a671-44295de069b0/bin/uautomizer-tPACEb0tL8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-16 12:07:26,285 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:07:26,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:07:26,286 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:07:26,286 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:07:26,288 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:07:26,288 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:07:26,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:07:26,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:07:26,290 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:07:26,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:07:26,292 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:07:26,292 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:07:26,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:07:26,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:07:26,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:07:26,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:07:26,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:07:26,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:07:26,294 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-16 12:07:26,294 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:07:26,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:07:26,295 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:07:26,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:07:26,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:07:26,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:07:26,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:07:26,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:07:26,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:07:26,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:07:26,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:07:26,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:07:26,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:07:26,300 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:07:26,300 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:07:26,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:07:26,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb9d6c6-2455-4882-a671-44295de069b0/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb9d6c6-2455-4882-a671-44295de069b0/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f799b8cb369af433cd7b4f4a2ae1c7efd2306d185f06da0302d2727c00c6bf0 [2022-11-16 12:07:26,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:07:26,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:07:26,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:07:26,755 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:07:26,756 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:07:26,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb9d6c6-2455-4882-a671-44295de069b0/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-races/race-4_2-thread_local_vars.i [2022-11-16 12:07:26,854 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb9d6c6-2455-4882-a671-44295de069b0/bin/uautomizer-tPACEb0tL8/data/92521df50/d709f9d952544fcd8ac5d8f603935554/FLAG4563fa2d0 [2022-11-16 12:07:27,679 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:07:27,679 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb9d6c6-2455-4882-a671-44295de069b0/sv-benchmarks/c/ldv-races/race-4_2-thread_local_vars.i [2022-11-16 12:07:27,710 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb9d6c6-2455-4882-a671-44295de069b0/bin/uautomizer-tPACEb0tL8/data/92521df50/d709f9d952544fcd8ac5d8f603935554/FLAG4563fa2d0 [2022-11-16 12:07:27,869 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb9d6c6-2455-4882-a671-44295de069b0/bin/uautomizer-tPACEb0tL8/data/92521df50/d709f9d952544fcd8ac5d8f603935554 [2022-11-16 12:07:27,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:07:27,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:07:27,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:07:27,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:07:27,894 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:07:27,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:07:27" (1/1) ... [2022-11-16 12:07:27,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b28c68e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:27, skipping insertion in model container [2022-11-16 12:07:27,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:07:27" (1/1) ... [2022-11-16 12:07:27,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:07:27,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:07:29,230 WARN L229 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_3cb9d6c6-2455-4882-a671-44295de069b0/sv-benchmarks/c/ldv-races/race-4_2-thread_local_vars.i[76081,76094] [2022-11-16 12:07:29,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:07:29,356 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:07:29,423 WARN L229 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_3cb9d6c6-2455-4882-a671-44295de069b0/sv-benchmarks/c/ldv-races/race-4_2-thread_local_vars.i[76081,76094] [2022-11-16 12:07:29,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:07:29,576 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:07:29,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:29 WrapperNode [2022-11-16 12:07:29,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:07:29,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:07:29,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:07:29,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:07:29,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:29" (1/1) ... [2022-11-16 12:07:29,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:29" (1/1) ... [2022-11-16 12:07:29,699 INFO L138 Inliner]: procedures = 486, calls = 44, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 279 [2022-11-16 12:07:29,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:07:29,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:07:29,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:07:29,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:07:29,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:29" (1/1) ... [2022-11-16 12:07:29,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:29" (1/1) ... [2022-11-16 12:07:29,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:29" (1/1) ... [2022-11-16 12:07:29,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:29" (1/1) ... [2022-11-16 12:07:29,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:29" (1/1) ... [2022-11-16 12:07:29,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:29" (1/1) ... [2022-11-16 12:07:29,809 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:29" (1/1) ... [2022-11-16 12:07:29,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:29" (1/1) ... [2022-11-16 12:07:29,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:07:29,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:07:29,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:07:29,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:07:29,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:29" (1/1) ... [2022-11-16 12:07:29,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:07:29,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb9d6c6-2455-4882-a671-44295de069b0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:29,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb9d6c6-2455-4882-a671-44295de069b0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:29,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb9d6c6-2455-4882-a671-44295de069b0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:07:29,978 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2022-11-16 12:07:29,978 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2022-11-16 12:07:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:07:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:07:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2022-11-16 12:07:29,979 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2022-11-16 12:07:29,980 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:07:29,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:07:29,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:07:29,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:07:29,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:07:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:07:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:07:29,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:07:29,988 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:07:30,354 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:07:30,357 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:07:31,067 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:07:31,086 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:07:31,090 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:07:31,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:07:31 BoogieIcfgContainer [2022-11-16 12:07:31,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:07:31,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:07:31,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:07:31,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:07:31,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:07:27" (1/3) ... [2022-11-16 12:07:31,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6026228a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:07:31, skipping insertion in model container [2022-11-16 12:07:31,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:29" (2/3) ... [2022-11-16 12:07:31,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6026228a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:07:31, skipping insertion in model container [2022-11-16 12:07:31,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:07:31" (3/3) ... [2022-11-16 12:07:31,108 INFO L112 eAbstractionObserver]: Analyzing ICFG race-4_2-thread_local_vars.i [2022-11-16 12:07:31,124 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:07:31,138 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:07:31,138 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-16 12:07:31,138 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:07:31,317 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-16 12:07:31,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 452 places, 484 transitions, 998 flow [2022-11-16 12:07:31,627 INFO L130 PetriNetUnfolder]: 35/495 cut-off events. [2022-11-16 12:07:31,628 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:07:31,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 495 events. 35/495 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1384 event pairs, 0 based on Foata normal form. 0/421 useless extension candidates. Maximal degree in co-relation 348. Up to 11 conditions per place. [2022-11-16 12:07:31,639 INFO L82 GeneralOperation]: Start removeDead. Operand has 452 places, 484 transitions, 998 flow [2022-11-16 12:07:31,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 310 places, 328 transitions, 673 flow [2022-11-16 12:07:31,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:07:31,691 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;@3d1f4ad3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:07:31,692 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2022-11-16 12:07:31,709 INFO L130 PetriNetUnfolder]: 0/34 cut-off events. [2022-11-16 12:07:31,709 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:07:31,709 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:31,710 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:31,711 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-16 12:07:31,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:31,720 INFO L85 PathProgramCache]: Analyzing trace with hash -328043758, now seen corresponding path program 1 times [2022-11-16 12:07:31,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:31,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969089362] [2022-11-16 12:07:31,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:31,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:32,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:32,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:32,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969089362] [2022-11-16 12:07:32,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969089362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:32,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:32,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:07:32,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005604678] [2022-11-16 12:07:32,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:32,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:32,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:32,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:32,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:32,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 484 [2022-11-16 12:07:32,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 328 transitions, 673 flow. Second operand has 3 states, 3 states have (on average 388.3333333333333) internal successors, (1165), 3 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:32,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:32,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 484 [2022-11-16 12:07:32,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:33,004 INFO L130 PetriNetUnfolder]: 211/1611 cut-off events. [2022-11-16 12:07:33,005 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-11-16 12:07:33,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1967 conditions, 1611 events. 211/1611 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 10520 event pairs, 114 based on Foata normal form. 74/1398 useless extension candidates. Maximal degree in co-relation 1626. Up to 328 conditions per place. [2022-11-16 12:07:33,028 INFO L137 encePairwiseOnDemand]: 470/484 looper letters, 47 selfloop transitions, 2 changer transitions 2/309 dead transitions. [2022-11-16 12:07:33,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 309 transitions, 733 flow [2022-11-16 12:07:33,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:33,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:07:33,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1222 transitions. [2022-11-16 12:07:33,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8415977961432507 [2022-11-16 12:07:33,063 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1222 transitions. [2022-11-16 12:07:33,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1222 transitions. [2022-11-16 12:07:33,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:33,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1222 transitions. [2022-11-16 12:07:33,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 407.3333333333333) internal successors, (1222), 3 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:33,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:33,095 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:33,098 INFO L175 Difference]: Start difference. First operand has 310 places, 328 transitions, 673 flow. Second operand 3 states and 1222 transitions. [2022-11-16 12:07:33,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 309 transitions, 733 flow [2022-11-16 12:07:33,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 309 transitions, 729 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:07:33,120 INFO L231 Difference]: Finished difference. Result has 302 places, 307 transitions, 631 flow [2022-11-16 12:07:33,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=631, PETRI_PLACES=302, PETRI_TRANSITIONS=307} [2022-11-16 12:07:33,130 INFO L288 CegarLoopForPetriNet]: 310 programPoint places, -8 predicate places. [2022-11-16 12:07:33,131 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 307 transitions, 631 flow [2022-11-16 12:07:33,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 388.3333333333333) internal successors, (1165), 3 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:33,132 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:33,132 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:33,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:07:33,134 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-16 12:07:33,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:33,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1700446628, now seen corresponding path program 1 times [2022-11-16 12:07:33,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:33,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772856992] [2022-11-16 12:07:33,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:33,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:33,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:33,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:33,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772856992] [2022-11-16 12:07:33,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772856992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:33,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:33,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:07:33,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127652020] [2022-11-16 12:07:33,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:33,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:33,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:33,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:33,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:33,318 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 484 [2022-11-16 12:07:33,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 307 transitions, 631 flow. Second operand has 3 states, 3 states have (on average 391.3333333333333) internal successors, (1174), 3 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:33,321 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:33,321 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 484 [2022-11-16 12:07:33,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:33,961 INFO L130 PetriNetUnfolder]: 225/1916 cut-off events. [2022-11-16 12:07:33,961 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2022-11-16 12:07:33,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2294 conditions, 1916 events. 225/1916 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 13680 event pairs, 45 based on Foata normal form. 1/1630 useless extension candidates. Maximal degree in co-relation 2250. Up to 194 conditions per place. [2022-11-16 12:07:33,985 INFO L137 encePairwiseOnDemand]: 460/484 looper letters, 47 selfloop transitions, 17 changer transitions 0/325 dead transitions. [2022-11-16 12:07:33,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 325 transitions, 796 flow [2022-11-16 12:07:33,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:33,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:07:33,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1241 transitions. [2022-11-16 12:07:33,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8546831955922864 [2022-11-16 12:07:33,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1241 transitions. [2022-11-16 12:07:33,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1241 transitions. [2022-11-16 12:07:33,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:33,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1241 transitions. [2022-11-16 12:07:33,996 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) [2022-11-16 12:07:34,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:34,003 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:34,003 INFO L175 Difference]: Start difference. First operand has 302 places, 307 transitions, 631 flow. Second operand 3 states and 1241 transitions. [2022-11-16 12:07:34,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 325 transitions, 796 flow [2022-11-16 12:07:34,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 325 transitions, 792 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:07:34,018 INFO L231 Difference]: Finished difference. Result has 299 places, 316 transitions, 745 flow [2022-11-16 12:07:34,019 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=745, PETRI_PLACES=299, PETRI_TRANSITIONS=316} [2022-11-16 12:07:34,020 INFO L288 CegarLoopForPetriNet]: 310 programPoint places, -11 predicate places. [2022-11-16 12:07:34,020 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 316 transitions, 745 flow [2022-11-16 12:07:34,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 391.3333333333333) internal successors, (1174), 3 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:34,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:34,023 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:34,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:07:34,024 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-16 12:07:34,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:34,025 INFO L85 PathProgramCache]: Analyzing trace with hash -260845678, now seen corresponding path program 1 times [2022-11-16 12:07:34,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:34,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535880732] [2022-11-16 12:07:34,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:34,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:34,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:34,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535880732] [2022-11-16 12:07:34,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535880732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:34,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:34,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:07:34,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796864623] [2022-11-16 12:07:34,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:34,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:34,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:34,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:34,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:34,243 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 484 [2022-11-16 12:07:34,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 316 transitions, 745 flow. Second operand has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:34,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:34,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 484 [2022-11-16 12:07:34,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:34,816 INFO L130 PetriNetUnfolder]: 221/1786 cut-off events. [2022-11-16 12:07:34,816 INFO L131 PetriNetUnfolder]: For 370/417 co-relation queries the response was YES. [2022-11-16 12:07:34,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2505 conditions, 1786 events. 221/1786 cut-off events. For 370/417 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 12272 event pairs, 74 based on Foata normal form. 0/1524 useless extension candidates. Maximal degree in co-relation 2156. Up to 359 conditions per place. [2022-11-16 12:07:34,836 INFO L137 encePairwiseOnDemand]: 481/484 looper letters, 55 selfloop transitions, 2 changer transitions 0/315 dead transitions. [2022-11-16 12:07:34,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 315 transitions, 857 flow [2022-11-16 12:07:34,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:07:34,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1207 transitions. [2022-11-16 12:07:34,840 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.831267217630854 [2022-11-16 12:07:34,841 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1207 transitions. [2022-11-16 12:07:34,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1207 transitions. [2022-11-16 12:07:34,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:34,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1207 transitions. [2022-11-16 12:07:34,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 402.3333333333333) internal successors, (1207), 3 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:34,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:34,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:34,852 INFO L175 Difference]: Start difference. First operand has 299 places, 316 transitions, 745 flow. Second operand 3 states and 1207 transitions. [2022-11-16 12:07:34,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 315 transitions, 857 flow [2022-11-16 12:07:34,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 315 transitions, 823 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:07:34,861 INFO L231 Difference]: Finished difference. Result has 298 places, 315 transitions, 713 flow [2022-11-16 12:07:34,862 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=713, PETRI_PLACES=298, PETRI_TRANSITIONS=315} [2022-11-16 12:07:34,863 INFO L288 CegarLoopForPetriNet]: 310 programPoint places, -12 predicate places. [2022-11-16 12:07:34,864 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 315 transitions, 713 flow [2022-11-16 12:07:34,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:34,865 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:34,865 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:34,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:07:34,866 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_usbErr0ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-16 12:07:34,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:34,867 INFO L85 PathProgramCache]: Analyzing trace with hash -743245933, now seen corresponding path program 1 times [2022-11-16 12:07:34,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:34,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794041747] [2022-11-16 12:07:34,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:34,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:34,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:34,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:34,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794041747] [2022-11-16 12:07:34,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794041747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:34,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:34,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:07:34,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453704521] [2022-11-16 12:07:34,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:34,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:34,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:34,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:34,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:34,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 484 [2022-11-16 12:07:34,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 315 transitions, 713 flow. Second operand has 3 states, 3 states have (on average 416.3333333333333) internal successors, (1249), 3 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:34,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:34,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 484 [2022-11-16 12:07:34,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:35,298 INFO L130 PetriNetUnfolder]: 111/1326 cut-off events. [2022-11-16 12:07:35,298 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-16 12:07:35,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1573 conditions, 1326 events. 111/1326 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 7949 event pairs, 13 based on Foata normal form. 0/1141 useless extension candidates. Maximal degree in co-relation 1531. Up to 88 conditions per place. [2022-11-16 12:07:35,314 INFO L137 encePairwiseOnDemand]: 481/484 looper letters, 22 selfloop transitions, 2 changer transitions 0/314 dead transitions. [2022-11-16 12:07:35,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 314 transitions, 759 flow [2022-11-16 12:07:35,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:35,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:07:35,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1270 transitions. [2022-11-16 12:07:35,318 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8746556473829201 [2022-11-16 12:07:35,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1270 transitions. [2022-11-16 12:07:35,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1270 transitions. [2022-11-16 12:07:35,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:35,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1270 transitions. [2022-11-16 12:07:35,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:35,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:35,329 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:35,329 INFO L175 Difference]: Start difference. First operand has 298 places, 315 transitions, 713 flow. Second operand 3 states and 1270 transitions. [2022-11-16 12:07:35,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 314 transitions, 759 flow [2022-11-16 12:07:35,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 314 transitions, 755 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:07:35,337 INFO L231 Difference]: Finished difference. Result has 297 places, 314 transitions, 711 flow [2022-11-16 12:07:35,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=711, PETRI_PLACES=297, PETRI_TRANSITIONS=314} [2022-11-16 12:07:35,339 INFO L288 CegarLoopForPetriNet]: 310 programPoint places, -13 predicate places. [2022-11-16 12:07:35,339 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 314 transitions, 711 flow [2022-11-16 12:07:35,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 416.3333333333333) internal successors, (1249), 3 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:35,340 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:35,340 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:35,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:07:35,341 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_usbErr1ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-16 12:07:35,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:35,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1043373596, now seen corresponding path program 1 times [2022-11-16 12:07:35,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:35,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34337025] [2022-11-16 12:07:35,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:35,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:35,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:35,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:35,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34337025] [2022-11-16 12:07:35,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34337025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:35,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:35,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:07:35,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728560362] [2022-11-16 12:07:35,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:35,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:35,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:35,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:35,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:35,451 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 484 [2022-11-16 12:07:35,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 314 transitions, 711 flow. Second operand has 3 states, 3 states have (on average 418.6666666666667) internal successors, (1256), 3 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:35,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:35,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 484 [2022-11-16 12:07:35,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:35,804 INFO L130 PetriNetUnfolder]: 128/1408 cut-off events. [2022-11-16 12:07:35,804 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-16 12:07:35,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1653 conditions, 1408 events. 128/1408 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8651 event pairs, 13 based on Foata normal form. 0/1223 useless extension candidates. Maximal degree in co-relation 1545. Up to 83 conditions per place. [2022-11-16 12:07:35,819 INFO L137 encePairwiseOnDemand]: 476/484 looper letters, 17 selfloop transitions, 5 changer transitions 0/314 dead transitions. [2022-11-16 12:07:35,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 314 transitions, 755 flow [2022-11-16 12:07:35,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:35,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:07:35,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1276 transitions. [2022-11-16 12:07:35,824 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8787878787878788 [2022-11-16 12:07:35,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1276 transitions. [2022-11-16 12:07:35,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1276 transitions. [2022-11-16 12:07:35,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:35,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1276 transitions. [2022-11-16 12:07:35,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 425.3333333333333) internal successors, (1276), 3 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:35,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:35,837 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:35,838 INFO L175 Difference]: Start difference. First operand has 297 places, 314 transitions, 711 flow. Second operand 3 states and 1276 transitions. [2022-11-16 12:07:35,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 314 transitions, 755 flow [2022-11-16 12:07:35,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 314 transitions, 751 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:07:35,848 INFO L231 Difference]: Finished difference. Result has 295 places, 314 transitions, 728 flow [2022-11-16 12:07:35,849 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=728, PETRI_PLACES=295, PETRI_TRANSITIONS=314} [2022-11-16 12:07:35,853 INFO L288 CegarLoopForPetriNet]: 310 programPoint places, -15 predicate places. [2022-11-16 12:07:35,853 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 314 transitions, 728 flow [2022-11-16 12:07:35,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 418.6666666666667) internal successors, (1256), 3 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:35,855 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:35,856 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:35,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:07:35,856 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-16 12:07:35,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:35,858 INFO L85 PathProgramCache]: Analyzing trace with hash 628288565, now seen corresponding path program 1 times [2022-11-16 12:07:35,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:35,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661187935] [2022-11-16 12:07:35,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:35,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:36,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:36,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661187935] [2022-11-16 12:07:36,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661187935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:36,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:36,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:07:36,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214377962] [2022-11-16 12:07:36,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:36,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:07:36,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:36,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:07:36,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:07:36,738 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 484 [2022-11-16 12:07:36,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 314 transitions, 728 flow. Second operand has 6 states, 6 states have (on average 429.6666666666667) internal successors, (2578), 6 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:36,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:36,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 484 [2022-11-16 12:07:36,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:37,451 INFO L130 PetriNetUnfolder]: 397/2037 cut-off events. [2022-11-16 12:07:37,452 INFO L131 PetriNetUnfolder]: For 61/90 co-relation queries the response was YES. [2022-11-16 12:07:37,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2869 conditions, 2037 events. 397/2037 cut-off events. For 61/90 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 13523 event pairs, 51 based on Foata normal form. 20/1790 useless extension candidates. Maximal degree in co-relation 2060. Up to 171 conditions per place. [2022-11-16 12:07:37,476 INFO L137 encePairwiseOnDemand]: 479/484 looper letters, 52 selfloop transitions, 4 changer transitions 16/349 dead transitions. [2022-11-16 12:07:37,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 349 transitions, 946 flow [2022-11-16 12:07:37,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:07:37,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:07:37,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2625 transitions. [2022-11-16 12:07:37,484 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9039256198347108 [2022-11-16 12:07:37,484 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2625 transitions. [2022-11-16 12:07:37,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2625 transitions. [2022-11-16 12:07:37,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:37,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2625 transitions. [2022-11-16 12:07:37,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 437.5) internal successors, (2625), 6 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:37,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 484.0) internal successors, (3388), 7 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:37,508 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 484.0) internal successors, (3388), 7 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:37,508 INFO L175 Difference]: Start difference. First operand has 295 places, 314 transitions, 728 flow. Second operand 6 states and 2625 transitions. [2022-11-16 12:07:37,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 349 transitions, 946 flow [2022-11-16 12:07:37,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 349 transitions, 941 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:07:37,518 INFO L231 Difference]: Finished difference. Result has 298 places, 297 transitions, 693 flow [2022-11-16 12:07:37,519 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=693, PETRI_PLACES=298, PETRI_TRANSITIONS=297} [2022-11-16 12:07:37,522 INFO L288 CegarLoopForPetriNet]: 310 programPoint places, -12 predicate places. [2022-11-16 12:07:37,522 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 297 transitions, 693 flow [2022-11-16 12:07:37,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 429.6666666666667) internal successors, (2578), 6 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:37,524 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:37,524 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:37,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:07:37,525 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_usbErr11ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-16 12:07:37,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:37,526 INFO L85 PathProgramCache]: Analyzing trace with hash 122542389, now seen corresponding path program 1 times [2022-11-16 12:07:37,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:37,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631473058] [2022-11-16 12:07:37,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:37,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:37,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:37,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631473058] [2022-11-16 12:07:37,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631473058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:37,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:37,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:07:37,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410323838] [2022-11-16 12:07:37,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:37,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:37,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:37,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:37,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:37,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 388 out of 484 [2022-11-16 12:07:37,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 297 transitions, 693 flow. Second operand has 3 states, 3 states have (on average 390.6666666666667) internal successors, (1172), 3 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:37,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:37,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 388 of 484 [2022-11-16 12:07:37,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:38,161 INFO L130 PetriNetUnfolder]: 272/1950 cut-off events. [2022-11-16 12:07:38,162 INFO L131 PetriNetUnfolder]: For 147/180 co-relation queries the response was YES. [2022-11-16 12:07:38,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2665 conditions, 1950 events. 272/1950 cut-off events. For 147/180 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 13840 event pairs, 72 based on Foata normal form. 1/1667 useless extension candidates. Maximal degree in co-relation 2575. Up to 371 conditions per place. [2022-11-16 12:07:38,189 INFO L137 encePairwiseOnDemand]: 478/484 looper letters, 55 selfloop transitions, 7 changer transitions 1/307 dead transitions. [2022-11-16 12:07:38,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 307 transitions, 849 flow [2022-11-16 12:07:38,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:38,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:07:38,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1213 transitions. [2022-11-16 12:07:38,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8353994490358126 [2022-11-16 12:07:38,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1213 transitions. [2022-11-16 12:07:38,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1213 transitions. [2022-11-16 12:07:38,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:38,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1213 transitions. [2022-11-16 12:07:38,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 404.3333333333333) internal successors, (1213), 3 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:38,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:38,203 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:38,203 INFO L175 Difference]: Start difference. First operand has 298 places, 297 transitions, 693 flow. Second operand 3 states and 1213 transitions. [2022-11-16 12:07:38,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 307 transitions, 849 flow [2022-11-16 12:07:38,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 307 transitions, 842 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:07:38,213 INFO L231 Difference]: Finished difference. Result has 283 places, 301 transitions, 740 flow [2022-11-16 12:07:38,213 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=740, PETRI_PLACES=283, PETRI_TRANSITIONS=301} [2022-11-16 12:07:38,214 INFO L288 CegarLoopForPetriNet]: 310 programPoint places, -27 predicate places. [2022-11-16 12:07:38,215 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 301 transitions, 740 flow [2022-11-16 12:07:38,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 390.6666666666667) internal successors, (1172), 3 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:38,216 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:38,216 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:38,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:07:38,217 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread_usbErr6ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-16 12:07:38,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:38,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1663402882, now seen corresponding path program 1 times [2022-11-16 12:07:38,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:38,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157093880] [2022-11-16 12:07:38,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:38,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:38,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:38,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:38,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157093880] [2022-11-16 12:07:38,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157093880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:38,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:38,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:07:38,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680313767] [2022-11-16 12:07:38,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:38,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:38,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:38,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:38,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:38,408 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 484 [2022-11-16 12:07:38,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 301 transitions, 740 flow. Second operand has 3 states, 3 states have (on average 433.3333333333333) internal successors, (1300), 3 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:38,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:38,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 484 [2022-11-16 12:07:38,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:38,788 INFO L130 PetriNetUnfolder]: 151/1516 cut-off events. [2022-11-16 12:07:38,788 INFO L131 PetriNetUnfolder]: For 97/105 co-relation queries the response was YES. [2022-11-16 12:07:38,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1897 conditions, 1516 events. 151/1516 cut-off events. For 97/105 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9817 event pairs, 14 based on Foata normal form. 0/1319 useless extension candidates. Maximal degree in co-relation 1812. Up to 90 conditions per place. [2022-11-16 12:07:38,808 INFO L137 encePairwiseOnDemand]: 476/484 looper letters, 13 selfloop transitions, 5 changer transitions 0/304 dead transitions. [2022-11-16 12:07:38,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 304 transitions, 782 flow [2022-11-16 12:07:38,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:38,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:07:38,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1317 transitions. [2022-11-16 12:07:38,813 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9070247933884298 [2022-11-16 12:07:38,813 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1317 transitions. [2022-11-16 12:07:38,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1317 transitions. [2022-11-16 12:07:38,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:38,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1317 transitions. [2022-11-16 12:07:38,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 439.0) internal successors, (1317), 3 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:38,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:38,824 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:38,824 INFO L175 Difference]: Start difference. First operand has 283 places, 301 transitions, 740 flow. Second operand 3 states and 1317 transitions. [2022-11-16 12:07:38,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 304 transitions, 782 flow [2022-11-16 12:07:38,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 304 transitions, 768 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:07:38,835 INFO L231 Difference]: Finished difference. Result has 284 places, 303 transitions, 760 flow [2022-11-16 12:07:38,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=284, PETRI_TRANSITIONS=303} [2022-11-16 12:07:38,837 INFO L288 CegarLoopForPetriNet]: 310 programPoint places, -26 predicate places. [2022-11-16 12:07:38,837 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 303 transitions, 760 flow [2022-11-16 12:07:38,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 433.3333333333333) internal successors, (1300), 3 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:38,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:38,839 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:38,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:07:38,840 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-16 12:07:38,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:38,840 INFO L85 PathProgramCache]: Analyzing trace with hash 563510456, now seen corresponding path program 1 times [2022-11-16 12:07:38,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:38,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980607033] [2022-11-16 12:07:38,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:38,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:38,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:38,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980607033] [2022-11-16 12:07:38,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980607033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:38,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:38,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:07:38,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909195869] [2022-11-16 12:07:38,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:38,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:38,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:38,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:38,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:38,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 484 [2022-11-16 12:07:38,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 303 transitions, 760 flow. Second operand has 3 states, 3 states have (on average 390.3333333333333) internal successors, (1171), 3 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:38,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:38,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 484 [2022-11-16 12:07:38,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:39,691 INFO L130 PetriNetUnfolder]: 392/2581 cut-off events. [2022-11-16 12:07:39,692 INFO L131 PetriNetUnfolder]: For 334/419 co-relation queries the response was YES. [2022-11-16 12:07:39,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3761 conditions, 2581 events. 392/2581 cut-off events. For 334/419 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 20236 event pairs, 90 based on Foata normal form. 4/2264 useless extension candidates. Maximal degree in co-relation 3670. Up to 467 conditions per place. [2022-11-16 12:07:39,727 INFO L137 encePairwiseOnDemand]: 474/484 looper letters, 70 selfloop transitions, 15 changer transitions 0/331 dead transitions. [2022-11-16 12:07:39,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 331 transitions, 1033 flow [2022-11-16 12:07:39,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:39,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:07:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1224 transitions. [2022-11-16 12:07:39,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8429752066115702 [2022-11-16 12:07:39,732 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1224 transitions. [2022-11-16 12:07:39,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1224 transitions. [2022-11-16 12:07:39,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:39,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1224 transitions. [2022-11-16 12:07:39,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 408.0) internal successors, (1224), 3 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,741 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,741 INFO L175 Difference]: Start difference. First operand has 284 places, 303 transitions, 760 flow. Second operand 3 states and 1224 transitions. [2022-11-16 12:07:39,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 331 transitions, 1033 flow [2022-11-16 12:07:39,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 331 transitions, 1023 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:07:39,752 INFO L231 Difference]: Finished difference. Result has 286 places, 314 transitions, 878 flow [2022-11-16 12:07:39,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=878, PETRI_PLACES=286, PETRI_TRANSITIONS=314} [2022-11-16 12:07:39,753 INFO L288 CegarLoopForPetriNet]: 310 programPoint places, -24 predicate places. [2022-11-16 12:07:39,754 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 314 transitions, 878 flow [2022-11-16 12:07:39,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 390.3333333333333) internal successors, (1171), 3 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,755 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:39,755 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:39,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:07:39,755 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread_usbErr2ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-16 12:07:39,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:39,756 INFO L85 PathProgramCache]: Analyzing trace with hash 296986258, now seen corresponding path program 1 times [2022-11-16 12:07:39,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:39,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174718583] [2022-11-16 12:07:39,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:39,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:39,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:39,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174718583] [2022-11-16 12:07:39,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174718583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:39,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:39,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:07:39,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100819091] [2022-11-16 12:07:39,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:39,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:39,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:39,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:39,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:39,864 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 484 [2022-11-16 12:07:39,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 314 transitions, 878 flow. Second operand has 3 states, 3 states have (on average 417.6666666666667) internal successors, (1253), 3 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:39,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 484 [2022-11-16 12:07:39,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:40,295 INFO L130 PetriNetUnfolder]: 222/1986 cut-off events. [2022-11-16 12:07:40,299 INFO L131 PetriNetUnfolder]: For 427/469 co-relation queries the response was YES. [2022-11-16 12:07:40,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2821 conditions, 1986 events. 222/1986 cut-off events. For 427/469 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 14570 event pairs, 16 based on Foata normal form. 3/1750 useless extension candidates. Maximal degree in co-relation 2734. Up to 127 conditions per place. [2022-11-16 12:07:40,327 INFO L137 encePairwiseOnDemand]: 481/484 looper letters, 21 selfloop transitions, 2 changer transitions 0/313 dead transitions. [2022-11-16 12:07:40,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 313 transitions, 922 flow [2022-11-16 12:07:40,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:40,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:07:40,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1266 transitions. [2022-11-16 12:07:40,332 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.871900826446281 [2022-11-16 12:07:40,332 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1266 transitions. [2022-11-16 12:07:40,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1266 transitions. [2022-11-16 12:07:40,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:40,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1266 transitions. [2022-11-16 12:07:40,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 422.0) internal successors, (1266), 3 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:40,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:40,341 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:40,341 INFO L175 Difference]: Start difference. First operand has 286 places, 314 transitions, 878 flow. Second operand 3 states and 1266 transitions. [2022-11-16 12:07:40,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 313 transitions, 922 flow [2022-11-16 12:07:40,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 313 transitions, 892 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:07:40,351 INFO L231 Difference]: Finished difference. Result has 285 places, 313 transitions, 850 flow [2022-11-16 12:07:40,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=850, PETRI_PLACES=285, PETRI_TRANSITIONS=313} [2022-11-16 12:07:40,355 INFO L288 CegarLoopForPetriNet]: 310 programPoint places, -25 predicate places. [2022-11-16 12:07:40,356 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 313 transitions, 850 flow [2022-11-16 12:07:40,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 417.6666666666667) internal successors, (1253), 3 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:40,357 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:40,357 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:40,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:07:40,357 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread_usbErr3ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-16 12:07:40,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:40,358 INFO L85 PathProgramCache]: Analyzing trace with hash 2055293110, now seen corresponding path program 1 times [2022-11-16 12:07:40,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:40,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724773893] [2022-11-16 12:07:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:40,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:40,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:40,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724773893] [2022-11-16 12:07:40,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724773893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:40,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:40,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:07:40,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200832051] [2022-11-16 12:07:40,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:40,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:40,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:40,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:40,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:40,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 388 out of 484 [2022-11-16 12:07:40,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 313 transitions, 850 flow. Second operand has 3 states, 3 states have (on average 390.6666666666667) internal successors, (1172), 3 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:40,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:40,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 388 of 484 [2022-11-16 12:07:40,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:41,023 INFO L130 PetriNetUnfolder]: 333/2445 cut-off events. [2022-11-16 12:07:41,023 INFO L131 PetriNetUnfolder]: For 666/791 co-relation queries the response was YES. [2022-11-16 12:07:41,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3695 conditions, 2445 events. 333/2445 cut-off events. For 666/791 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 19184 event pairs, 61 based on Foata normal form. 2/2155 useless extension candidates. Maximal degree in co-relation 3604. Up to 409 conditions per place. [2022-11-16 12:07:41,057 INFO L137 encePairwiseOnDemand]: 478/484 looper letters, 68 selfloop transitions, 9 changer transitions 0/324 dead transitions. [2022-11-16 12:07:41,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 324 transitions, 1054 flow [2022-11-16 12:07:41,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:41,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:07:41,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1213 transitions. [2022-11-16 12:07:41,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8353994490358126 [2022-11-16 12:07:41,062 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1213 transitions. [2022-11-16 12:07:41,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1213 transitions. [2022-11-16 12:07:41,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:41,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1213 transitions. [2022-11-16 12:07:41,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 404.3333333333333) internal successors, (1213), 3 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,071 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,071 INFO L175 Difference]: Start difference. First operand has 285 places, 313 transitions, 850 flow. Second operand 3 states and 1213 transitions. [2022-11-16 12:07:41,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 324 transitions, 1054 flow [2022-11-16 12:07:41,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 324 transitions, 1050 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:07:41,082 INFO L231 Difference]: Finished difference. Result has 287 places, 318 transitions, 920 flow [2022-11-16 12:07:41,083 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=920, PETRI_PLACES=287, PETRI_TRANSITIONS=318} [2022-11-16 12:07:41,084 INFO L288 CegarLoopForPetriNet]: 310 programPoint places, -23 predicate places. [2022-11-16 12:07:41,084 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 318 transitions, 920 flow [2022-11-16 12:07:41,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 390.6666666666667) internal successors, (1172), 3 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,085 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:41,085 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:41,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:07:41,085 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-16 12:07:41,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:41,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1344638751, now seen corresponding path program 1 times [2022-11-16 12:07:41,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:41,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93027180] [2022-11-16 12:07:41,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:41,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:41,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:41,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:41,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93027180] [2022-11-16 12:07:41,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93027180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:41,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:41,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:07:41,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001002010] [2022-11-16 12:07:41,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:41,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:41,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:41,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:41,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:41,195 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 484 [2022-11-16 12:07:41,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 318 transitions, 920 flow. Second operand has 3 states, 3 states have (on average 391.6666666666667) internal successors, (1175), 3 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:41,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 484 [2022-11-16 12:07:41,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:42,070 INFO L130 PetriNetUnfolder]: 746/4652 cut-off events. [2022-11-16 12:07:42,071 INFO L131 PetriNetUnfolder]: For 2003/2306 co-relation queries the response was YES. [2022-11-16 12:07:42,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7255 conditions, 4652 events. 746/4652 cut-off events. For 2003/2306 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 44389 event pairs, 231 based on Foata normal form. 7/4142 useless extension candidates. Maximal degree in co-relation 6525. Up to 832 conditions per place. [2022-11-16 12:07:42,132 INFO L137 encePairwiseOnDemand]: 478/484 looper letters, 73 selfloop transitions, 9 changer transitions 1/329 dead transitions. [2022-11-16 12:07:42,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 329 transitions, 1140 flow [2022-11-16 12:07:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:42,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:07:42,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1211 transitions. [2022-11-16 12:07:42,137 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8340220385674931 [2022-11-16 12:07:42,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1211 transitions. [2022-11-16 12:07:42,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1211 transitions. [2022-11-16 12:07:42,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:42,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1211 transitions. [2022-11-16 12:07:42,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 403.6666666666667) internal successors, (1211), 3 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:42,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:42,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 484.0) internal successors, (1936), 4 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:42,146 INFO L175 Difference]: Start difference. First operand has 287 places, 318 transitions, 920 flow. Second operand 3 states and 1211 transitions. [2022-11-16 12:07:42,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 329 transitions, 1140 flow [2022-11-16 12:07:42,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 329 transitions, 1116 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-16 12:07:42,173 INFO L231 Difference]: Finished difference. Result has 289 places, 322 transitions, 972 flow [2022-11-16 12:07:42,174 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=972, PETRI_PLACES=289, PETRI_TRANSITIONS=322} [2022-11-16 12:07:42,174 INFO L288 CegarLoopForPetriNet]: 310 programPoint places, -21 predicate places. [2022-11-16 12:07:42,175 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 322 transitions, 972 flow [2022-11-16 12:07:42,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 391.6666666666667) internal successors, (1175), 3 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:42,175 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:42,176 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:42,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:07:42,176 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_usbErr11ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-16 12:07:42,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:42,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1714342102, now seen corresponding path program 1 times [2022-11-16 12:07:42,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:42,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452242718] [2022-11-16 12:07:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:42,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:42,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:42,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:42,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452242718] [2022-11-16 12:07:42,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452242718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:42,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:42,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:07:42,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198495236] [2022-11-16 12:07:42,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:42,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:07:42,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:42,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:07:42,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:07:42,347 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 439 out of 484 [2022-11-16 12:07:42,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 322 transitions, 972 flow. Second operand has 5 states, 5 states have (on average 441.2) internal successors, (2206), 5 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:42,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:42,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 439 of 484 [2022-11-16 12:07:42,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:43,540 INFO L130 PetriNetUnfolder]: 732/5579 cut-off events. [2022-11-16 12:07:43,540 INFO L131 PetriNetUnfolder]: For 2477/2589 co-relation queries the response was YES. [2022-11-16 12:07:43,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8518 conditions, 5579 events. 732/5579 cut-off events. For 2477/2589 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 49958 event pairs, 60 based on Foata normal form. 9/4931 useless extension candidates. Maximal degree in co-relation 8429. Up to 396 conditions per place. [2022-11-16 12:07:43,594 INFO L137 encePairwiseOnDemand]: 476/484 looper letters, 23 selfloop transitions, 8 changer transitions 0/337 dead transitions. [2022-11-16 12:07:43,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 337 transitions, 1078 flow [2022-11-16 12:07:43,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:07:43,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:07:43,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3105 transitions. [2022-11-16 12:07:43,604 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.916469893742621 [2022-11-16 12:07:43,605 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3105 transitions. [2022-11-16 12:07:43,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3105 transitions. [2022-11-16 12:07:43,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:43,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3105 transitions. [2022-11-16 12:07:43,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 443.57142857142856) internal successors, (3105), 7 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:43,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 484.0) internal successors, (3872), 8 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:43,628 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 484.0) internal successors, (3872), 8 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:43,628 INFO L175 Difference]: Start difference. First operand has 289 places, 322 transitions, 972 flow. Second operand 7 states and 3105 transitions. [2022-11-16 12:07:43,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 337 transitions, 1078 flow [2022-11-16 12:07:43,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 337 transitions, 1048 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-11-16 12:07:43,644 INFO L231 Difference]: Finished difference. Result has 298 places, 329 transitions, 1000 flow [2022-11-16 12:07:43,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1000, PETRI_PLACES=298, PETRI_TRANSITIONS=329} [2022-11-16 12:07:43,647 INFO L288 CegarLoopForPetriNet]: 310 programPoint places, -12 predicate places. [2022-11-16 12:07:43,647 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 329 transitions, 1000 flow [2022-11-16 12:07:43,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 441.2) internal successors, (2206), 5 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:43,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:43,648 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:43,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:07:43,649 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-16 12:07:43,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:43,651 INFO L85 PathProgramCache]: Analyzing trace with hash 812304545, now seen corresponding path program 1 times [2022-11-16 12:07:43,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:43,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794616349] [2022-11-16 12:07:43,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:43,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:43,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:43,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794616349] [2022-11-16 12:07:43,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794616349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:43,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:43,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:07:43,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319234546] [2022-11-16 12:07:43,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:43,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:07:43,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:43,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:07:43,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:07:43,865 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 440 out of 484 [2022-11-16 12:07:43,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 329 transitions, 1000 flow. Second operand has 5 states, 5 states have (on average 442.0) internal successors, (2210), 5 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:43,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:43,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 440 of 484 [2022-11-16 12:07:43,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:45,272 INFO L130 PetriNetUnfolder]: 832/6452 cut-off events. [2022-11-16 12:07:45,272 INFO L131 PetriNetUnfolder]: For 2590/2708 co-relation queries the response was YES. [2022-11-16 12:07:45,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9939 conditions, 6452 events. 832/6452 cut-off events. For 2590/2708 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 58805 event pairs, 77 based on Foata normal form. 11/5737 useless extension candidates. Maximal degree in co-relation 9846. Up to 486 conditions per place. [2022-11-16 12:07:45,363 INFO L137 encePairwiseOnDemand]: 477/484 looper letters, 26 selfloop transitions, 9 changer transitions 0/349 dead transitions. [2022-11-16 12:07:45,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 349 transitions, 1121 flow [2022-11-16 12:07:45,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:07:45,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:07:45,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3116 transitions. [2022-11-16 12:07:45,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9197166469893743 [2022-11-16 12:07:45,371 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3116 transitions. [2022-11-16 12:07:45,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3116 transitions. [2022-11-16 12:07:45,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:45,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3116 transitions. [2022-11-16 12:07:45,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 445.14285714285717) internal successors, (3116), 7 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:45,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 484.0) internal successors, (3872), 8 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:45,390 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 484.0) internal successors, (3872), 8 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:45,390 INFO L175 Difference]: Start difference. First operand has 298 places, 329 transitions, 1000 flow. Second operand 7 states and 3116 transitions. [2022-11-16 12:07:45,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 349 transitions, 1121 flow [2022-11-16 12:07:45,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 349 transitions, 1121 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:07:45,403 INFO L231 Difference]: Finished difference. Result has 310 places, 337 transitions, 1068 flow [2022-11-16 12:07:45,404 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=484, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1068, PETRI_PLACES=310, PETRI_TRANSITIONS=337} [2022-11-16 12:07:45,405 INFO L288 CegarLoopForPetriNet]: 310 programPoint places, 0 predicate places. [2022-11-16 12:07:45,405 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 337 transitions, 1068 flow [2022-11-16 12:07:45,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 442.0) internal successors, (2210), 5 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:45,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:45,407 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:45,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:07:45,407 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-16 12:07:45,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:45,408 INFO L85 PathProgramCache]: Analyzing trace with hash 2036318954, now seen corresponding path program 1 times [2022-11-16 12:07:45,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:45,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117539178] [2022-11-16 12:07:45,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:45,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:07:45,455 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:07:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:07:45,542 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:07:45,542 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 12:07:45,543 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE (39 of 40 remaining) [2022-11-16 12:07:45,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE (38 of 40 remaining) [2022-11-16 12:07:45,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE (37 of 40 remaining) [2022-11-16 12:07:45,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (36 of 40 remaining) [2022-11-16 12:07:45,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (35 of 40 remaining) [2022-11-16 12:07:45,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (34 of 40 remaining) [2022-11-16 12:07:45,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (33 of 40 remaining) [2022-11-16 12:07:45,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (32 of 40 remaining) [2022-11-16 12:07:45,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (31 of 40 remaining) [2022-11-16 12:07:45,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (30 of 40 remaining) [2022-11-16 12:07:45,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 40 remaining) [2022-11-16 12:07:45,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr0ASSERT_VIOLATIONDATA_RACE (28 of 40 remaining) [2022-11-16 12:07:45,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr11ASSERT_VIOLATIONDATA_RACE (27 of 40 remaining) [2022-11-16 12:07:45,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr1ASSERT_VIOLATIONDATA_RACE (26 of 40 remaining) [2022-11-16 12:07:45,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr12ASSERT_VIOLATIONDATA_RACE (25 of 40 remaining) [2022-11-16 12:07:45,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr5ASSERT_VIOLATIONDATA_RACE (24 of 40 remaining) [2022-11-16 12:07:45,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr10ASSERT_VIOLATIONDATA_RACE (23 of 40 remaining) [2022-11-16 12:07:45,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr6ASSERT_VIOLATIONDATA_RACE (22 of 40 remaining) [2022-11-16 12:07:45,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr7ASSERT_VIOLATIONDATA_RACE (21 of 40 remaining) [2022-11-16 12:07:45,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr2ASSERT_VIOLATIONDATA_RACE (20 of 40 remaining) [2022-11-16 12:07:45,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr8ASSERT_VIOLATIONDATA_RACE (19 of 40 remaining) [2022-11-16 12:07:45,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr9ASSERT_VIOLATIONDATA_RACE (18 of 40 remaining) [2022-11-16 12:07:45,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr3ASSERT_VIOLATIONDATA_RACE (17 of 40 remaining) [2022-11-16 12:07:45,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr4ASSERT_VIOLATIONDATA_RACE (16 of 40 remaining) [2022-11-16 12:07:45,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 40 remaining) [2022-11-16 12:07:45,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE (14 of 40 remaining) [2022-11-16 12:07:45,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr0ASSERT_VIOLATIONDATA_RACE (13 of 40 remaining) [2022-11-16 12:07:45,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr11ASSERT_VIOLATIONDATA_RACE (12 of 40 remaining) [2022-11-16 12:07:45,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr1ASSERT_VIOLATIONDATA_RACE (11 of 40 remaining) [2022-11-16 12:07:45,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr12ASSERT_VIOLATIONDATA_RACE (10 of 40 remaining) [2022-11-16 12:07:45,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr5ASSERT_VIOLATIONDATA_RACE (9 of 40 remaining) [2022-11-16 12:07:45,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr10ASSERT_VIOLATIONDATA_RACE (8 of 40 remaining) [2022-11-16 12:07:45,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr6ASSERT_VIOLATIONDATA_RACE (7 of 40 remaining) [2022-11-16 12:07:45,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr7ASSERT_VIOLATIONDATA_RACE (6 of 40 remaining) [2022-11-16 12:07:45,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr2ASSERT_VIOLATIONDATA_RACE (5 of 40 remaining) [2022-11-16 12:07:45,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr8ASSERT_VIOLATIONDATA_RACE (4 of 40 remaining) [2022-11-16 12:07:45,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr9ASSERT_VIOLATIONDATA_RACE (3 of 40 remaining) [2022-11-16 12:07:45,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr3ASSERT_VIOLATIONDATA_RACE (2 of 40 remaining) [2022-11-16 12:07:45,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr4ASSERT_VIOLATIONDATA_RACE (1 of 40 remaining) [2022-11-16 12:07:45,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbThread1of1ForFork1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 40 remaining) [2022-11-16 12:07:45,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:07:45,557 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:45,573 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:07:45,574 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:07:45,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:07:45 BasicIcfg [2022-11-16 12:07:45,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:07:45,715 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:07:45,715 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:07:45,716 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:07:45,716 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:07:31" (3/4) ... [2022-11-16 12:07:45,719 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 12:07:45,720 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:07:45,721 INFO L158 Benchmark]: Toolchain (without parser) took 17838.30ms. Allocated memory was 123.7MB in the beginning and 687.9MB in the end (delta: 564.1MB). Free memory was 87.9MB in the beginning and 382.7MB in the end (delta: -294.8MB). Peak memory consumption was 267.9MB. Max. memory is 16.1GB. [2022-11-16 12:07:45,721 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 92.3MB. Free memory was 46.4MB in the beginning and 46.3MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:07:45,721 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1688.57ms. Allocated memory is still 123.7MB. Free memory was 87.7MB in the beginning and 55.2MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-16 12:07:45,722 INFO L158 Benchmark]: Boogie Procedure Inliner took 129.39ms. Allocated memory is still 123.7MB. Free memory was 55.2MB in the beginning and 51.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:07:45,722 INFO L158 Benchmark]: Boogie Preprocessor took 121.57ms. Allocated memory is still 123.7MB. Free memory was 51.6MB in the beginning and 48.0MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:07:45,723 INFO L158 Benchmark]: RCFGBuilder took 1264.59ms. Allocated memory is still 123.7MB. Free memory was 48.0MB in the beginning and 71.9MB in the end (delta: -23.9MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2022-11-16 12:07:45,723 INFO L158 Benchmark]: TraceAbstraction took 14616.52ms. Allocated memory was 123.7MB in the beginning and 687.9MB in the end (delta: 564.1MB). Free memory was 71.2MB in the beginning and 383.8MB in the end (delta: -312.6MB). Peak memory consumption was 254.1MB. Max. memory is 16.1GB. [2022-11-16 12:07:45,724 INFO L158 Benchmark]: Witness Printer took 4.71ms. Allocated memory is still 687.9MB. Free memory was 383.8MB in the beginning and 382.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:07:45,726 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 92.3MB. Free memory was 46.4MB in the beginning and 46.3MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1688.57ms. Allocated memory is still 123.7MB. Free memory was 87.7MB in the beginning and 55.2MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 129.39ms. Allocated memory is still 123.7MB. Free memory was 55.2MB in the beginning and 51.6MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 121.57ms. Allocated memory is still 123.7MB. Free memory was 51.6MB in the beginning and 48.0MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1264.59ms. Allocated memory is still 123.7MB. Free memory was 48.0MB in the beginning and 71.9MB in the end (delta: -23.9MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * TraceAbstraction took 14616.52ms. Allocated memory was 123.7MB in the beginning and 687.9MB in the end (delta: 564.1MB). Free memory was 71.2MB in the beginning and 383.8MB in the end (delta: -312.6MB). Peak memory consumption was 254.1MB. Max. memory is 16.1GB. * Witness Printer took 4.71ms. Allocated memory is still 687.9MB. Free memory was 383.8MB in the beginning and 382.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - DataRaceFoundResult [Line: 1699]: Data race detected Data race detected The following path leads to a data race: [L1695] 0 pthread_mutex_t mutex; VAL [mutex={3:0}] [L1696] 0 int pdev; VAL [mutex={3:0}, pdev=0] [L1741] 0 int ldv_usb_state; VAL [ldv_usb_state=0, mutex={3:0}, pdev=0] [L1694] 0 pthread_t t1, t2; VAL [ldv_usb_state=0, mutex={3:0}, pdev=0, t1={4:0}, t2={5:0}] [L1798] CALL 0 module_init() [L1779] 0 pdev = 1 VAL [ldv_usb_state=0, mutex={3:0}, pdev=1, t1={4:0}, t2={5:0}] [L1780] EXPR 0 pdev==1 VAL [ldv_usb_state=0, mutex={3:0}, pdev=1, t1={4:0}, t2={5:0}] [L1780] CALL 0 ldv_assert(pdev==1) [L1693] COND FALSE 0 !(!expression) VAL [\old(expression)=1, expression=1, ldv_usb_state=0, mutex={3:0}, pdev=1, t1={4:0}, t2={5:0}] [L1780] RET 0 ldv_assert(pdev==1) [L1781] COND TRUE 0 __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, ldv_usb_state=0, mutex={3:0}, pdev=1, t1={4:0}, t2={5:0}] [L1782] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread_usb, ((void *)0)) VAL [ldv_usb_state=0, mutex={3:0}, pdev=1, pthread_create(&t1, ((void *)0), thread_usb, ((void *)0))=-1, t1={4:0}, t2={5:0}] [L1743] 1 ldv_usb_state = 0 VAL [arg={0:0}, arg={0:0}, ldv_usb_state=0, mutex={3:0}, pdev=1, t1={4:0}, t2={5:0}] [L1744] 1 int probe_ret; VAL [arg={0:0}, arg={0:0}, ldv_usb_state=0, mutex={3:0}, pdev=1, t1={4:0}, t2={5:0}] [L1745] COND TRUE 1 1 VAL [arg={0:0}, arg={0:0}, ldv_usb_state=0, mutex={3:0}, pdev=1, t1={4:0}, t2={5:0}] [L1747] 1 case 0: VAL [__VERIFIER_nondet_int()=0, arg={0:0}, arg={0:0}, ldv_usb_state=0, mutex={3:0}, pdev=1, t1={4:0}, t2={5:0}] [L1748] 1 ldv_usb_state==0 VAL [__VERIFIER_nondet_int()=0, arg={0:0}, arg={0:0}, ldv_usb_state=0, mutex={3:0}, pdev=1, t1={4:0}, t2={5:0}] [L1748] COND TRUE 1 ldv_usb_state==0 VAL [__VERIFIER_nondet_int()=0, arg={0:0}, arg={0:0}, ldv_usb_state=0, mutex={3:0}, pdev=1, t1={4:0}, t2={5:0}] [L1749] CALL, EXPR 1 ath_ahb_probe() [L1730] 1 int error; VAL [ldv_usb_state=0, mutex={3:0}, pdev=1, t1={4:0}, t2={5:0}] [L1731] CALL, EXPR 1 ieee80211_register_hw() [L1717] COND TRUE 1 __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, ldv_usb_state=0, mutex={3:0}, pdev=1, t1={4:0}, t2={5:0}] [L1718] FCALL, FORK 1 pthread_create(&t2, ((void *)0), thread_ath9k, ((void *)0)) VAL [ldv_usb_state=0, mutex={3:0}, pdev=1, pthread_create(&t2, ((void *)0), thread_ath9k, ((void *)0))=0, t1={4:0}, t2={5:0}] [L1704] COND TRUE 2 1 VAL [arg={0:0}, arg={0:0}, ldv_usb_state=0, mutex={3:0}, pdev=1, t1={4:0}, t2={5:0}] [L1706] 2 case 1: VAL [__VERIFIER_nondet_int()=1, arg={0:0}, arg={0:0}, ldv_usb_state=0, mutex={3:0}, pdev=1, t1={4:0}, t2={5:0}] [L1707] CALL 2 ath9k_flush() [L1699] 2 pdev = 6 VAL [ldv_usb_state=0, mutex={3:0}, pdev=6, pdev = 6=1152, t1={4:0}, t2={5:0}] [L1719] 1 return 0; VAL [\result=0, ldv_usb_state=0, mutex={3:0}, pdev=6, t1={4:0}, t2={5:0}] [L1731] RET, EXPR 1 ieee80211_register_hw() [L1731] 1 error = ieee80211_register_hw() VAL [error=0, ieee80211_register_hw()=0, ldv_usb_state=0, mutex={3:0}, pdev=6, t1={4:0}, t2={5:0}] [L1732] COND FALSE 1 !(\read(error)) VAL [error=0, ldv_usb_state=0, mutex={3:0}, pdev=6, t1={4:0}, t2={5:0}] [L1734] 1 return 0; VAL [\result=0, error=0, ldv_usb_state=0, mutex={3:0}, pdev=6, t1={4:0}, t2={5:0}] [L1749] RET, EXPR 1 ath_ahb_probe() [L1749] 1 probe_ret = ath_ahb_probe() VAL [__VERIFIER_nondet_int()=0, arg={0:0}, arg={0:0}, ath_ahb_probe()=0, ldv_usb_state=0, mutex={3:0}, pdev=6, probe_ret=0, t1={4:0}, t2={5:0}] [L1750] COND FALSE 1 !(probe_ret!=0) VAL [__VERIFIER_nondet_int()=0, arg={0:0}, arg={0:0}, ldv_usb_state=0, mutex={3:0}, pdev=6, probe_ret=0, t1={4:0}, t2={5:0}] [L1752] 1 ldv_usb_state = 1 VAL [__VERIFIER_nondet_int()=0, arg={0:0}, arg={0:0}, ldv_usb_state=1, mutex={3:0}, pdev=6, probe_ret=0, t1={4:0}, t2={5:0}] [L1753] 1 pdev = 7 VAL [__VERIFIER_nondet_int()=0, arg={0:0}, arg={0:0}, ldv_usb_state=1, mutex={3:0}, pdev=7, pdev = 7=1150, probe_ret=0, t1={4:0}, t2={5:0}] [L1699] 2 pdev = 6 VAL [ldv_usb_state=1, mutex={3:0}, pdev=7, pdev = 6=1152, t1={4:0}, t2={5:0}] Now there is a data race on ~pdev~0 between C: pdev = 7 [1753] and C: pdev = 6 [1699] - UnprovableResult [Line: 1700]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1779]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1780]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1785]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1786]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1792]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1794]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1795]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1782]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1743]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1773]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1748]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1774]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1758]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1766]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1725]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1760]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1752]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1761]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1762]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1753]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1754]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1718]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1718]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 491 locations, 40 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.2s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 126 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 126 mSDsluCounter, 407 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 52 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 663 IncrementalHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 52 mSolverCounterUnsat, 360 mSDtfsCounter, 663 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=14, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1192 NumberOfCodeBlocks, 1192 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1062 ConstructedInterpolants, 0 QuantifiedInterpolants, 1215 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-16 12:07:45,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cb9d6c6-2455-4882-a671-44295de069b0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE