./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 b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39021fe-a013-40d9-ae86-7d3371c7860f/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39021fe-a013-40d9-ae86-7d3371c7860f/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39021fe-a013-40d9-ae86-7d3371c7860f/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39021fe-a013-40d9-ae86-7d3371c7860f/bin/utaipan-g80aRyZoba/config/TaipanReach.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_b39021fe-a013-40d9-ae86-7d3371c7860f/bin/utaipan-g80aRyZoba/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39021fe-a013-40d9-ae86-7d3371c7860f/bin/utaipan-g80aRyZoba --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 Taipan --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-b5237d8 [2022-11-22 01:20:46,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:20:46,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:20:46,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:20:46,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:20:46,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:20:46,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:20:46,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:20:46,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:20:46,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:20:46,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:20:46,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:20:46,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:20:46,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:20:46,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:20:46,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:20:46,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:20:46,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:20:46,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:20:46,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:20:46,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:20:46,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:20:46,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:20:46,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:20:46,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:20:46,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:20:46,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:20:46,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:20:46,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:20:46,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:20:46,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:20:46,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:20:46,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:20:46,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:20:46,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:20:46,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:20:46,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:20:46,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:20:46,533 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:20:46,534 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:20:46,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:20:46,535 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39021fe-a013-40d9-ae86-7d3371c7860f/bin/utaipan-g80aRyZoba/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-22 01:20:46,577 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:20:46,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:20:46,585 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:20:46,585 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:20:46,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:20:46,586 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:20:46,586 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:20:46,587 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:20:46,587 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:20:46,587 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:20:46,588 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:20:46,588 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:20:46,589 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:20:46,589 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:20:46,589 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:20:46,589 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:20:46,590 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:20:46,590 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:20:46,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:20:46,591 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:20:46,592 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:20:46,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:20:46,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:20:46,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:20:46,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:20:46,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:20:46,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:20:46,594 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-22 01:20:46,594 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:20:46,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:20:46,594 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:20:46,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:20:46,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:20:46,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:20:46,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:20:46,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:20:46,596 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:20:46,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:20:46,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:20:46,597 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:20:46,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:20:46,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:20:46,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:20:46,598 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_b39021fe-a013-40d9-ae86-7d3371c7860f/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39021fe-a013-40d9-ae86-7d3371c7860f/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f799b8cb369af433cd7b4f4a2ae1c7efd2306d185f06da0302d2727c00c6bf0 [2022-11-22 01:20:46,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:20:46,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:20:46,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:20:46,892 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:20:46,893 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:20:46,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39021fe-a013-40d9-ae86-7d3371c7860f/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-races/race-4_2-thread_local_vars.i [2022-11-22 01:20:50,084 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:20:50,417 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:20:50,417 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39021fe-a013-40d9-ae86-7d3371c7860f/sv-benchmarks/c/ldv-races/race-4_2-thread_local_vars.i [2022-11-22 01:20:50,440 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39021fe-a013-40d9-ae86-7d3371c7860f/bin/utaipan-g80aRyZoba/data/b681889bd/57fc83e5ac234fb7a4e3ba4099544d7b/FLAG94ee6c384 [2022-11-22 01:20:50,460 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39021fe-a013-40d9-ae86-7d3371c7860f/bin/utaipan-g80aRyZoba/data/b681889bd/57fc83e5ac234fb7a4e3ba4099544d7b [2022-11-22 01:20:50,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:20:50,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:20:50,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:20:50,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:20:50,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:20:50,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:20:50" (1/1) ... [2022-11-22 01:20:50,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10951b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:50, skipping insertion in model container [2022-11-22 01:20:50,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:20:50" (1/1) ... [2022-11-22 01:20:50,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:20:50,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:20:51,354 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39021fe-a013-40d9-ae86-7d3371c7860f/sv-benchmarks/c/ldv-races/race-4_2-thread_local_vars.i[76081,76094] [2022-11-22 01:20:51,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:20:51,456 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:20:51,527 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39021fe-a013-40d9-ae86-7d3371c7860f/sv-benchmarks/c/ldv-races/race-4_2-thread_local_vars.i[76081,76094] [2022-11-22 01:20:51,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:20:51,675 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:20:51,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:51 WrapperNode [2022-11-22 01:20:51,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:20:51,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:20:51,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:20:51,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:20:51,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:51" (1/1) ... [2022-11-22 01:20:51,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:51" (1/1) ... [2022-11-22 01:20:51,778 INFO L138 Inliner]: procedures = 486, calls = 44, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 279 [2022-11-22 01:20:51,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:20:51,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:20:51,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:20:51,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:20:51,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:51" (1/1) ... [2022-11-22 01:20:51,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:51" (1/1) ... [2022-11-22 01:20:51,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:51" (1/1) ... [2022-11-22 01:20:51,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:51" (1/1) ... [2022-11-22 01:20:51,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:51" (1/1) ... [2022-11-22 01:20:51,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:51" (1/1) ... [2022-11-22 01:20:51,824 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:51" (1/1) ... [2022-11-22 01:20:51,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:51" (1/1) ... [2022-11-22 01:20:51,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:20:51,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:20:51,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:20:51,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:20:51,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:51" (1/1) ... [2022-11-22 01:20:51,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:20:51,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39021fe-a013-40d9-ae86-7d3371c7860f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:20:51,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39021fe-a013-40d9-ae86-7d3371c7860f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:20:51,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39021fe-a013-40d9-ae86-7d3371c7860f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:20:51,937 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2022-11-22 01:20:51,938 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2022-11-22 01:20:51,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:20:51,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:20:51,938 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2022-11-22 01:20:51,938 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2022-11-22 01:20:51,938 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-22 01:20:51,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:20:51,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:20:51,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:20:51,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:20:51,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:20:51,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:20:51,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:20:51,941 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 01:20:52,307 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:20:52,309 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:20:52,678 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:20:52,694 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:20:52,695 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 01:20:52,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:20:52 BoogieIcfgContainer [2022-11-22 01:20:52,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:20:52,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:20:52,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:20:52,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:20:52,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:20:50" (1/3) ... [2022-11-22 01:20:52,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98e8c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:20:52, skipping insertion in model container [2022-11-22 01:20:52,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:20:51" (2/3) ... [2022-11-22 01:20:52,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98e8c12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:20:52, skipping insertion in model container [2022-11-22 01:20:52,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:20:52" (3/3) ... [2022-11-22 01:20:52,717 INFO L112 eAbstractionObserver]: Analyzing ICFG race-4_2-thread_local_vars.i [2022-11-22 01:20:52,730 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 01:20:52,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:20:52,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-22 01:20:52,742 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 01:20:52,923 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-22 01:20:52,969 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:20:52,985 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 452 places, 484 transitions, 998 flow [2022-11-22 01:20:52,988 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 452 places, 484 transitions, 998 flow [2022-11-22 01:20:52,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 452 places, 484 transitions, 998 flow [2022-11-22 01:20:53,178 INFO L130 PetriNetUnfolder]: 35/495 cut-off events. [2022-11-22 01:20:53,178 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-22 01:20:53,188 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. [2022-11-22 01:20:53,238 INFO L119 LiptonReduction]: Number of co-enabled transitions 21084 [2022-11-22 01:21:08,482 INFO L134 LiptonReduction]: Checked pairs total: 53863 [2022-11-22 01:21:08,482 INFO L136 LiptonReduction]: Total number of compositions: 595 [2022-11-22 01:21:08,498 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 95 places, 107 transitions, 244 flow [2022-11-22 01:21:08,685 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3229 states, 3066 states have (on average 3.2064579256360077) internal successors, (9831), 3228 states have internal predecessors, (9831), 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) [2022-11-22 01:21:08,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:21:08,720 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=FINITE_AUTOMATA, 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;@797111b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:21:08,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2022-11-22 01:21:08,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 3229 states, 3066 states have (on average 3.2064579256360077) internal successors, (9831), 3228 states have internal predecessors, (9831), 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) [2022-11-22 01:21:08,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-22 01:21:08,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:08,737 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-22 01:21:08,738 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)] === [2022-11-22 01:21:08,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:08,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1571, now seen corresponding path program 1 times [2022-11-22 01:21:08,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:08,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436050512] [2022-11-22 01:21:08,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:08,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:08,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:21:08,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:08,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436050512] [2022-11-22 01:21:08,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436050512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:08,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:08,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-22 01:21:08,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162720714] [2022-11-22 01:21:08,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:08,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 01:21:08,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:09,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 01:21:09,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:21:09,015 INFO L87 Difference]: Start difference. First operand has 3229 states, 3066 states have (on average 3.2064579256360077) internal successors, (9831), 3228 states have internal predecessors, (9831), 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) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-22 01:21:09,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:09,179 INFO L93 Difference]: Finished difference Result 2741 states and 8124 transitions. [2022-11-22 01:21:09,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 01:21:09,182 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) Word has length 1 [2022-11-22 01:21:09,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:09,225 INFO L225 Difference]: With dead ends: 2741 [2022-11-22 01:21:09,225 INFO L226 Difference]: Without dead ends: 2730 [2022-11-22 01:21:09,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:21:09,230 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:09,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:21:09,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2022-11-22 01:21:09,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2730. [2022-11-22 01:21:09,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2730 states, 2637 states have (on average 3.072810011376564) internal successors, (8103), 2729 states have internal predecessors, (8103), 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) [2022-11-22 01:21:09,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2730 states to 2730 states and 8103 transitions. [2022-11-22 01:21:09,412 INFO L78 Accepts]: Start accepts. Automaton has 2730 states and 8103 transitions. Word has length 1 [2022-11-22 01:21:09,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:09,412 INFO L495 AbstractCegarLoop]: Abstraction has 2730 states and 8103 transitions. [2022-11-22 01:21:09,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-11-22 01:21:09,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2730 states and 8103 transitions. [2022-11-22 01:21:09,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:21:09,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:09,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 01:21:09,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:21:09,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread_usbErr11ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-22 01:21:09,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:09,415 INFO L85 PathProgramCache]: Analyzing trace with hash -984840980, now seen corresponding path program 1 times [2022-11-22 01:21:09,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:09,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097474808] [2022-11-22 01:21:09,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:09,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:21:09,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:09,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097474808] [2022-11-22 01:21:09,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097474808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:09,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:09,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:21:09,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270177430] [2022-11-22 01:21:09,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:09,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:09,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:09,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:09,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:09,618 INFO L87 Difference]: Start difference. First operand 2730 states and 8103 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-22 01:21:09,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:09,803 INFO L93 Difference]: Finished difference Result 2884 states and 8584 transitions. [2022-11-22 01:21:09,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:09,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2022-11-22 01:21:09,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:09,824 INFO L225 Difference]: With dead ends: 2884 [2022-11-22 01:21:09,825 INFO L226 Difference]: Without dead ends: 2884 [2022-11-22 01:21:09,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:09,827 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 18 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:09,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 46 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:21:09,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2022-11-22 01:21:09,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2796. [2022-11-22 01:21:09,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2796 states, 2706 states have (on average 3.073540280857354) internal successors, (8317), 2795 states have internal predecessors, (8317), 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) [2022-11-22 01:21:10,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2796 states to 2796 states and 8317 transitions. [2022-11-22 01:21:10,010 INFO L78 Accepts]: Start accepts. Automaton has 2796 states and 8317 transitions. Word has length 6 [2022-11-22 01:21:10,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:10,011 INFO L495 AbstractCegarLoop]: Abstraction has 2796 states and 8317 transitions. [2022-11-22 01:21:10,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-22 01:21:10,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2796 states and 8317 transitions. [2022-11-22 01:21:10,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:21:10,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:10,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:10,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:21:10,017 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread_usbErr3ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-22 01:21:10,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:10,019 INFO L85 PathProgramCache]: Analyzing trace with hash -463280514, now seen corresponding path program 1 times [2022-11-22 01:21:10,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:10,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629388263] [2022-11-22 01:21:10,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:10,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:21:10,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:10,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629388263] [2022-11-22 01:21:10,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629388263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:10,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:10,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:21:10,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615543573] [2022-11-22 01:21:10,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:10,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:10,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:10,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:10,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:10,166 INFO L87 Difference]: Start difference. First operand 2796 states and 8317 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-22 01:21:10,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:10,316 INFO L93 Difference]: Finished difference Result 2950 states and 8798 transitions. [2022-11-22 01:21:10,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:10,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) Word has length 7 [2022-11-22 01:21:10,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:10,333 INFO L225 Difference]: With dead ends: 2950 [2022-11-22 01:21:10,333 INFO L226 Difference]: Without dead ends: 2950 [2022-11-22 01:21:10,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:10,337 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 18 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:10,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 46 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:21:10,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2022-11-22 01:21:10,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2862. [2022-11-22 01:21:10,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2775 states have (on average 3.0742342342342344) internal successors, (8531), 2861 states have internal predecessors, (8531), 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) [2022-11-22 01:21:10,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 8531 transitions. [2022-11-22 01:21:10,441 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 8531 transitions. Word has length 7 [2022-11-22 01:21:10,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:10,443 INFO L495 AbstractCegarLoop]: Abstraction has 2862 states and 8531 transitions. [2022-11-22 01:21:10,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-22 01:21:10,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 8531 transitions. [2022-11-22 01:21:10,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:21:10,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:10,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:10,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:21:10,449 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_usbErr6ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-22 01:21:10,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:10,450 INFO L85 PathProgramCache]: Analyzing trace with hash -464695723, now seen corresponding path program 1 times [2022-11-22 01:21:10,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:10,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722118728] [2022-11-22 01:21:10,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:10,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:10,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:21:10,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:10,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722118728] [2022-11-22 01:21:10,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722118728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:10,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:10,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:21:10,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561678628] [2022-11-22 01:21:10,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:10,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:10,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:10,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:10,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:10,568 INFO L87 Difference]: Start difference. First operand 2862 states and 8531 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-22 01:21:10,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:10,688 INFO L93 Difference]: Finished difference Result 2873 states and 8585 transitions. [2022-11-22 01:21:10,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:10,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) Word has length 7 [2022-11-22 01:21:10,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:10,705 INFO L225 Difference]: With dead ends: 2873 [2022-11-22 01:21:10,705 INFO L226 Difference]: Without dead ends: 2873 [2022-11-22 01:21:10,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:10,708 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 43 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:10,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 45 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:21:10,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2022-11-22 01:21:10,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2873. [2022-11-22 01:21:10,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2873 states, 2786 states have (on average 3.081478822684853) internal successors, (8585), 2872 states have internal predecessors, (8585), 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) [2022-11-22 01:21:10,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 8585 transitions. [2022-11-22 01:21:10,853 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 8585 transitions. Word has length 7 [2022-11-22 01:21:10,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:10,853 INFO L495 AbstractCegarLoop]: Abstraction has 2873 states and 8585 transitions. [2022-11-22 01:21:10,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-22 01:21:10,854 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 8585 transitions. [2022-11-22 01:21:10,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:21:10,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:10,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:10,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:21:10,855 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-22 01:21:10,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:10,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1319455726, now seen corresponding path program 1 times [2022-11-22 01:21:10,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:10,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174309826] [2022-11-22 01:21:10,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:10,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:21:10,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:10,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174309826] [2022-11-22 01:21:10,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174309826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:10,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:10,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:21:10,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15155313] [2022-11-22 01:21:10,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:10,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:10,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:10,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:10,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:10,966 INFO L87 Difference]: Start difference. First operand 2873 states and 8585 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-22 01:21:11,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:11,059 INFO L93 Difference]: Finished difference Result 2867 states and 8579 transitions. [2022-11-22 01:21:11,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:11,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) Word has length 7 [2022-11-22 01:21:11,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:11,086 INFO L225 Difference]: With dead ends: 2867 [2022-11-22 01:21:11,086 INFO L226 Difference]: Without dead ends: 2866 [2022-11-22 01:21:11,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:11,087 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:11,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:21:11,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2022-11-22 01:21:11,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2866. [2022-11-22 01:21:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2780 states have (on average 3.085611510791367) internal successors, (8578), 2865 states have internal predecessors, (8578), 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) [2022-11-22 01:21:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 8578 transitions. [2022-11-22 01:21:11,172 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 8578 transitions. Word has length 7 [2022-11-22 01:21:11,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:11,173 INFO L495 AbstractCegarLoop]: Abstraction has 2866 states and 8578 transitions. [2022-11-22 01:21:11,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-22 01:21:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 8578 transitions. [2022-11-22 01:21:11,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 01:21:11,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:11,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:11,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:21:11,180 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_usbErr12ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-22 01:21:11,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:11,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1539342715, now seen corresponding path program 1 times [2022-11-22 01:21:11,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:11,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874674509] [2022-11-22 01:21:11,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:11,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:11,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:21:11,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:11,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874674509] [2022-11-22 01:21:11,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874674509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:11,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:11,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:21:11,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555857150] [2022-11-22 01:21:11,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:11,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:11,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:11,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:11,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:11,267 INFO L87 Difference]: Start difference. First operand 2866 states and 8578 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-22 01:21:11,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:11,435 INFO L93 Difference]: Finished difference Result 3415 states and 10031 transitions. [2022-11-22 01:21:11,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:11,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2022-11-22 01:21:11,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:11,461 INFO L225 Difference]: With dead ends: 3415 [2022-11-22 01:21:11,461 INFO L226 Difference]: Without dead ends: 3400 [2022-11-22 01:21:11,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:11,462 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 47 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:11,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 39 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:21:11,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3400 states. [2022-11-22 01:21:11,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3400 to 2824. [2022-11-22 01:21:11,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2824 states, 2758 states have (on average 2.9804205946337925) internal successors, (8220), 2823 states have internal predecessors, (8220), 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) [2022-11-22 01:21:11,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2824 states to 2824 states and 8220 transitions. [2022-11-22 01:21:11,552 INFO L78 Accepts]: Start accepts. Automaton has 2824 states and 8220 transitions. Word has length 8 [2022-11-22 01:21:11,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:11,553 INFO L495 AbstractCegarLoop]: Abstraction has 2824 states and 8220 transitions. [2022-11-22 01:21:11,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-22 01:21:11,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2824 states and 8220 transitions. [2022-11-22 01:21:11,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 01:21:11,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:11,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:11,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:21:11,556 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-22 01:21:11,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:11,556 INFO L85 PathProgramCache]: Analyzing trace with hash 586656271, now seen corresponding path program 1 times [2022-11-22 01:21:11,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:11,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165973530] [2022-11-22 01:21:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:11,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:21:11,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:11,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165973530] [2022-11-22 01:21:11,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165973530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:11,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:11,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:21:11,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820000224] [2022-11-22 01:21:11,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:11,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:11,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:11,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:11,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:11,626 INFO L87 Difference]: Start difference. First operand 2824 states and 8220 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-22 01:21:11,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:11,774 INFO L93 Difference]: Finished difference Result 2894 states and 8442 transitions. [2022-11-22 01:21:11,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:11,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 9 [2022-11-22 01:21:11,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:11,786 INFO L225 Difference]: With dead ends: 2894 [2022-11-22 01:21:11,786 INFO L226 Difference]: Without dead ends: 2882 [2022-11-22 01:21:11,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:11,787 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 38 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:11,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 46 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:21:11,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2022-11-22 01:21:11,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2882. [2022-11-22 01:21:11,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2829 states have (on average 2.971367974549311) internal successors, (8406), 2881 states have internal predecessors, (8406), 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) [2022-11-22 01:21:11,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 8406 transitions. [2022-11-22 01:21:11,868 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 8406 transitions. Word has length 9 [2022-11-22 01:21:11,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:11,869 INFO L495 AbstractCegarLoop]: Abstraction has 2882 states and 8406 transitions. [2022-11-22 01:21:11,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-22 01:21:11,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 8406 transitions. [2022-11-22 01:21:11,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 01:21:11,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:11,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:11,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:21:11,871 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-22 01:21:11,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:11,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1281849700, now seen corresponding path program 1 times [2022-11-22 01:21:11,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:11,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602980532] [2022-11-22 01:21:11,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:11,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:21:12,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:12,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602980532] [2022-11-22 01:21:12,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602980532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:12,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:12,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:21:12,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865595337] [2022-11-22 01:21:12,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:12,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:21:12,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:12,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:21:12,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:21:12,138 INFO L87 Difference]: Start difference. First operand 2882 states and 8406 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-22 01:21:12,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:12,432 INFO L93 Difference]: Finished difference Result 2625 states and 7626 transitions. [2022-11-22 01:21:12,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:21:12,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) Word has length 9 [2022-11-22 01:21:12,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:12,442 INFO L225 Difference]: With dead ends: 2625 [2022-11-22 01:21:12,442 INFO L226 Difference]: Without dead ends: 2611 [2022-11-22 01:21:12,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:21:12,443 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 129 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:12,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 113 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:21:12,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2022-11-22 01:21:12,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2611. [2022-11-22 01:21:12,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2576 states have (on average 2.950310559006211) internal successors, (7600), 2610 states have internal predecessors, (7600), 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) [2022-11-22 01:21:12,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 7600 transitions. [2022-11-22 01:21:12,517 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 7600 transitions. Word has length 9 [2022-11-22 01:21:12,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:12,517 INFO L495 AbstractCegarLoop]: Abstraction has 2611 states and 7600 transitions. [2022-11-22 01:21:12,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 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) [2022-11-22 01:21:12,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 7600 transitions. [2022-11-22 01:21:12,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 01:21:12,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:12,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:12,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:21:12,521 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread_usbErr11ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-22 01:21:12,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:12,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1078258522, now seen corresponding path program 1 times [2022-11-22 01:21:12,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:12,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078162509] [2022-11-22 01:21:12,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:12,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:21:12,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:21:12,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:21:12,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078162509] [2022-11-22 01:21:12,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078162509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:21:12,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:21:12,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:21:12,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054043539] [2022-11-22 01:21:12,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:21:12,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:21:12,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:21:12,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:21:12,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:12,660 INFO L87 Difference]: Start difference. First operand 2611 states and 7600 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-22 01:21:12,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:21:12,759 INFO L93 Difference]: Finished difference Result 2681 states and 7813 transitions. [2022-11-22 01:21:12,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:21:12,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) Word has length 12 [2022-11-22 01:21:12,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:21:12,771 INFO L225 Difference]: With dead ends: 2681 [2022-11-22 01:21:12,771 INFO L226 Difference]: Without dead ends: 2681 [2022-11-22 01:21:12,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:21:12,772 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 17 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:21:12,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 60 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:21:12,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2022-11-22 01:21:12,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2680. [2022-11-22 01:21:12,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2645 states have (on average 2.9534971644612478) internal successors, (7812), 2679 states have internal predecessors, (7812), 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) [2022-11-22 01:21:12,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 7812 transitions. [2022-11-22 01:21:12,859 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 7812 transitions. Word has length 12 [2022-11-22 01:21:12,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:21:12,859 INFO L495 AbstractCegarLoop]: Abstraction has 2680 states and 7812 transitions. [2022-11-22 01:21:12,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-22 01:21:12,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 7812 transitions. [2022-11-22 01:21:12,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 01:21:12,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:21:12,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:12,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:21:12,861 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread_usbErr3ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2022-11-22 01:21:12,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:21:12,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1247857392, now seen corresponding path program 1 times [2022-11-22 01:21:12,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:21:12,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87176274] [2022-11-22 01:21:12,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:21:12,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:21:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:21:12,885 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 01:21:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:21:12,930 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 01:21:12,931 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 01:21:12,932 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread_usbErr3ASSERT_VIOLATIONDATA_RACE (39 of 40 remaining) [2022-11-22 01:21:12,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE (38 of 40 remaining) [2022-11-22 01:21:12,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE (37 of 40 remaining) [2022-11-22 01:21:12,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (36 of 40 remaining) [2022-11-22 01:21:12,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (35 of 40 remaining) [2022-11-22 01:21:12,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (34 of 40 remaining) [2022-11-22 01:21:12,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (33 of 40 remaining) [2022-11-22 01:21:12,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (32 of 40 remaining) [2022-11-22 01:21:12,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (31 of 40 remaining) [2022-11-22 01:21:12,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (30 of 40 remaining) [2022-11-22 01:21:12,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 40 remaining) [2022-11-22 01:21:12,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr0ASSERT_VIOLATIONDATA_RACE (28 of 40 remaining) [2022-11-22 01:21:12,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr11ASSERT_VIOLATIONDATA_RACE (27 of 40 remaining) [2022-11-22 01:21:12,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr1ASSERT_VIOLATIONDATA_RACE (26 of 40 remaining) [2022-11-22 01:21:12,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr12ASSERT_VIOLATIONDATA_RACE (25 of 40 remaining) [2022-11-22 01:21:12,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr5ASSERT_VIOLATIONDATA_RACE (24 of 40 remaining) [2022-11-22 01:21:12,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr10ASSERT_VIOLATIONDATA_RACE (23 of 40 remaining) [2022-11-22 01:21:12,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr6ASSERT_VIOLATIONDATA_RACE (22 of 40 remaining) [2022-11-22 01:21:12,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr7ASSERT_VIOLATIONDATA_RACE (21 of 40 remaining) [2022-11-22 01:21:12,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr2ASSERT_VIOLATIONDATA_RACE (20 of 40 remaining) [2022-11-22 01:21:12,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr8ASSERT_VIOLATIONDATA_RACE (19 of 40 remaining) [2022-11-22 01:21:12,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr9ASSERT_VIOLATIONDATA_RACE (18 of 40 remaining) [2022-11-22 01:21:12,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr3ASSERT_VIOLATIONDATA_RACE (17 of 40 remaining) [2022-11-22 01:21:12,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr4ASSERT_VIOLATIONDATA_RACE (16 of 40 remaining) [2022-11-22 01:21:12,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 40 remaining) [2022-11-22 01:21:12,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE (14 of 40 remaining) [2022-11-22 01:21:12,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE (13 of 40 remaining) [2022-11-22 01:21:12,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr0ASSERT_VIOLATIONDATA_RACE (12 of 40 remaining) [2022-11-22 01:21:12,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr11ASSERT_VIOLATIONDATA_RACE (11 of 40 remaining) [2022-11-22 01:21:12,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr1ASSERT_VIOLATIONDATA_RACE (10 of 40 remaining) [2022-11-22 01:21:12,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr12ASSERT_VIOLATIONDATA_RACE (9 of 40 remaining) [2022-11-22 01:21:12,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr5ASSERT_VIOLATIONDATA_RACE (8 of 40 remaining) [2022-11-22 01:21:12,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr10ASSERT_VIOLATIONDATA_RACE (7 of 40 remaining) [2022-11-22 01:21:12,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr6ASSERT_VIOLATIONDATA_RACE (6 of 40 remaining) [2022-11-22 01:21:12,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr7ASSERT_VIOLATIONDATA_RACE (5 of 40 remaining) [2022-11-22 01:21:12,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr2ASSERT_VIOLATIONDATA_RACE (4 of 40 remaining) [2022-11-22 01:21:12,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr8ASSERT_VIOLATIONDATA_RACE (3 of 40 remaining) [2022-11-22 01:21:12,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr9ASSERT_VIOLATIONDATA_RACE (2 of 40 remaining) [2022-11-22 01:21:12,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr4ASSERT_VIOLATIONDATA_RACE (1 of 40 remaining) [2022-11-22 01:21:12,948 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbThread1of1ForFork1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 40 remaining) [2022-11-22 01:21:12,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 01:21:12,951 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:21:12,958 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-22 01:21:12,958 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:21:13,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:21:13 BasicIcfg [2022-11-22 01:21:13,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:21:13,027 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:21:13,027 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:21:13,027 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:21:13,028 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:20:52" (3/4) ... [2022-11-22 01:21:13,031 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-22 01:21:13,031 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:21:13,031 INFO L158 Benchmark]: Toolchain (without parser) took 22566.37ms. Allocated memory was 188.7MB in the beginning and 308.3MB in the end (delta: 119.5MB). Free memory was 142.1MB in the beginning and 157.6MB in the end (delta: -15.5MB). Peak memory consumption was 105.1MB. Max. memory is 16.1GB. [2022-11-22 01:21:13,032 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 138.4MB. Free memory was 78.6MB in the beginning and 78.4MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:21:13,032 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1206.21ms. Allocated memory is still 188.7MB. Free memory was 142.1MB in the beginning and 142.7MB in the end (delta: -679.4kB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. [2022-11-22 01:21:13,032 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.36ms. Allocated memory is still 188.7MB. Free memory was 142.7MB in the beginning and 138.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 01:21:13,033 INFO L158 Benchmark]: Boogie Preprocessor took 67.25ms. Allocated memory is still 188.7MB. Free memory was 138.5MB in the beginning and 135.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:21:13,033 INFO L158 Benchmark]: RCFGBuilder took 860.07ms. Allocated memory is still 188.7MB. Free memory was 135.4MB in the beginning and 106.0MB in the end (delta: 29.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-22 01:21:13,034 INFO L158 Benchmark]: TraceAbstraction took 20317.10ms. Allocated memory was 188.7MB in the beginning and 308.3MB in the end (delta: 119.5MB). Free memory was 105.0MB in the beginning and 158.6MB in the end (delta: -53.7MB). Peak memory consumption was 65.9MB. Max. memory is 16.1GB. [2022-11-22 01:21:13,034 INFO L158 Benchmark]: Witness Printer took 3.75ms. Allocated memory is still 308.3MB. Free memory was 158.6MB in the beginning and 157.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:21:13,036 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 138.4MB. Free memory was 78.6MB in the beginning and 78.4MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1206.21ms. Allocated memory is still 188.7MB. Free memory was 142.1MB in the beginning and 142.7MB in the end (delta: -679.4kB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.36ms. Allocated memory is still 188.7MB. Free memory was 142.7MB in the beginning and 138.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.25ms. Allocated memory is still 188.7MB. Free memory was 138.5MB in the beginning and 135.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 860.07ms. Allocated memory is still 188.7MB. Free memory was 135.4MB in the beginning and 106.0MB in the end (delta: 29.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 20317.10ms. Allocated memory was 188.7MB in the beginning and 308.3MB in the end (delta: 119.5MB). Free memory was 105.0MB in the beginning and 158.6MB in the end (delta: -53.7MB). Peak memory consumption was 65.9MB. Max. memory is 16.1GB. * Witness Printer took 3.75ms. Allocated memory is still 308.3MB. Free memory was 158.6MB in the beginning and 157.6MB 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: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.5s, 452 PlacesBefore, 95 PlacesAfterwards, 484 TransitionsBefore, 107 TransitionsAfterwards, 21084 CoEnabledTransitionPairs, 10 FixpointIterations, 269 TrivialSequentialCompositions, 231 ConcurrentSequentialCompositions, 26 TrivialYvCompositions, 49 ConcurrentYvCompositions, 20 ChoiceCompositions, 595 TotalNumberOfCompositions, 53863 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 29150, independent: 28373, independent conditional: 0, independent unconditional: 28373, dependent: 777, dependent conditional: 0, dependent unconditional: 777, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 15628, independent: 15490, independent conditional: 0, independent unconditional: 15490, dependent: 138, dependent conditional: 0, dependent unconditional: 138, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 15628, independent: 15253, independent conditional: 0, independent unconditional: 15253, dependent: 375, dependent conditional: 0, dependent unconditional: 375, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 375, independent: 237, independent conditional: 0, independent unconditional: 237, dependent: 138, dependent conditional: 0, dependent unconditional: 138, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 574, independent: 297, independent conditional: 0, independent unconditional: 297, dependent: 277, dependent conditional: 0, dependent unconditional: 277, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 29150, independent: 12883, independent conditional: 0, independent unconditional: 12883, dependent: 639, dependent conditional: 0, dependent unconditional: 639, unknown: 15628, unknown conditional: 0, unknown unconditional: 15628] , Statistics on independence cache: Total cache size (in pairs): 861, Positive cache size: 803, Positive conditional cache size: 0, Positive unconditional cache size: 803, Negative cache size: 58, Negative conditional cache size: 0, Negative unconditional cache size: 58, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - DataRaceFoundResult [Line: 1753]: Data race detected Data race detected The following path leads to a data race: [L1694] 0 pthread_t t1, t2; [L1695] 0 pthread_mutex_t mutex; [L1696] 0 int pdev; [L1741] 0 int ldv_usb_state; [L1798] CALL 0 module_init() [L1779] 0 pdev = 1 [L1780] EXPR 0 pdev==1 [L1780] CALL 0 ldv_assert(pdev==1) [L1693] COND FALSE 0 !(!expression) [L1780] RET 0 ldv_assert(pdev==1) [L1781] COND TRUE 0 __VERIFIER_nondet_int() [L1782] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread_usb, ((void *)0)) VAL [ldv_usb_state=0, mutex={5:0}, pdev=1, pthread_create(&t1, ((void *)0), thread_usb, ((void *)0))=-1, t1={3:0}, t2={4:0}] [L1743] 1 ldv_usb_state = 0 [L1744] 1 int probe_ret; VAL [arg={0:0}, arg={0:0}, ldv_usb_state=0, mutex={5:0}, pdev=1, t1={3:0}, t2={4:0}] [L1745] COND TRUE 1 1 [L1747] 1 case 0: [L1748] 1 ldv_usb_state==0 [L1748] COND TRUE 1 ldv_usb_state==0 [L1749] CALL, EXPR 1 ath_ahb_probe() [L1730] 1 int error; [L1731] CALL, EXPR 1 ieee80211_register_hw() [L1717] COND TRUE 1 __VERIFIER_nondet_int() [L1718] FCALL, FORK 1 pthread_create(&t2, ((void *)0), thread_ath9k, ((void *)0)) VAL [ldv_usb_state=0, mutex={5:0}, pdev=1, pthread_create(&t2, ((void *)0), thread_ath9k, ((void *)0))=0, t1={3:0}, t2={4:0}] [L1719] 1 return 0; [L1731] RET, EXPR 1 ieee80211_register_hw() [L1731] 1 error = ieee80211_register_hw() [L1732] COND FALSE 1 !(\read(error)) [L1734] 1 return 0; [L1749] RET, EXPR 1 ath_ahb_probe() [L1749] 1 probe_ret = ath_ahb_probe() [L1750] COND FALSE 1 !(probe_ret!=0) [L1752] 1 ldv_usb_state = 1 [L1753] 1 pdev = 7 VAL [__VERIFIER_nondet_int()=0, arg={0:0}, arg={0:0}, ldv_usb_state=1, mutex={5:0}, pdev=7, pdev = 7=1153, probe_ret=0, t1={3:0}, t2={4:0}] [L1704] COND TRUE 2 1 [L1706] 2 case 1: [L1707] CALL 2 ath9k_flush() [L1699] 2 pdev = 6 VAL [ldv_usb_state=1, mutex={5:0}, pdev=6, pdev = 6=1154, t1={3:0}, t2={4:0}] [L1753] 1 pdev = 7 VAL [__VERIFIER_nondet_int()=0, arg={0:0}, arg={0:0}, ldv_usb_state=1, mutex={5:0}, pdev=6, pdev = 7=1153, probe_ret=0, t1={3:0}, t2={4:0}] Now there is a data race on ~pdev~0 between C: pdev = 6 [1699] and C: pdev = 7 [1753] - UnprovableResult [Line: 1699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - 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: 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. OverallTime: 20.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 15.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 310 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 310 mSDsluCounter, 473 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 174 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 904 IncrementalHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 299 mSDtfsCounter, 904 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3229occurred in iteration=0, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 753 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 119 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2022-11-22 01:21:13,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b39021fe-a013-40d9-ae86-7d3371c7860f/bin/utaipan-g80aRyZoba/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