./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-races/race-4_2-thread_local_vars.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-races/race-4_2-thread_local_vars.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f799b8cb369af433cd7b4f4a2ae1c7efd2306d185f06da0302d2727c00c6bf0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:51:26,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:51:26,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:51:26,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:51:26,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:51:26,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:51:26,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:51:26,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:51:26,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:51:26,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:51:26,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:51:26,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:51:26,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:51:26,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:51:26,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:51:26,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:51:26,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:51:26,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:51:26,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:51:26,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:51:26,259 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:51:26,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:51:26,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:51:26,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:51:26,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:51:26,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:51:26,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:51:26,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:51:26,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:51:26,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:51:26,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:51:26,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:51:26,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:51:26,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:51:26,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:51:26,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:51:26,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:51:26,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:51:26,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:51:26,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:51:26,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:51:26,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:51:26,271 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:51:26,286 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:51:26,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:51:26,287 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:51:26,287 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:51:26,287 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:51:26,287 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:51:26,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:51:26,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:51:26,288 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:51:26,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:51:26,288 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:51:26,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:51:26,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:51:26,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:51:26,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:51:26,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:51:26,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:51:26,289 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:51:26,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:51:26,290 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:51:26,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:51:26,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:51:26,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:51:26,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:51:26,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:51:26,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:51:26,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:51:26,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:51:26,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:51:26,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:51:26,291 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:51:26,291 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:51:26,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:51:26,292 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f799b8cb369af433cd7b4f4a2ae1c7efd2306d185f06da0302d2727c00c6bf0 [2022-07-13 21:51:26,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:51:26,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:51:26,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:51:26,509 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:51:26,510 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:51:26,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-4_2-thread_local_vars.i [2022-07-13 21:51:26,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ee1a2aa7/7d62a0ced0e24654bdb77d8078eab762/FLAG9a05193ff [2022-07-13 21:51:26,978 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:51:26,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-4_2-thread_local_vars.i [2022-07-13 21:51:26,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ee1a2aa7/7d62a0ced0e24654bdb77d8078eab762/FLAG9a05193ff [2022-07-13 21:51:27,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ee1a2aa7/7d62a0ced0e24654bdb77d8078eab762 [2022-07-13 21:51:27,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:51:27,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:51:27,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:51:27,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:51:27,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:51:27,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:51:27" (1/1) ... [2022-07-13 21:51:27,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19b5ff5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:27, skipping insertion in model container [2022-07-13 21:51:27,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:51:27" (1/1) ... [2022-07-13 21:51:27,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:51:27,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:51:27,661 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-4_2-thread_local_vars.i[76081,76094] [2022-07-13 21:51:27,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:51:27,695 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:51:27,730 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-4_2-thread_local_vars.i[76081,76094] [2022-07-13 21:51:27,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:51:27,830 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:51:27,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:27 WrapperNode [2022-07-13 21:51:27,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:51:27,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:51:27,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:51:27,832 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:51:27,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:27" (1/1) ... [2022-07-13 21:51:27,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:27" (1/1) ... [2022-07-13 21:51:27,893 INFO L137 Inliner]: procedures = 486, calls = 44, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 209 [2022-07-13 21:51:27,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:51:27,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:51:27,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:51:27,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:51:27,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:27" (1/1) ... [2022-07-13 21:51:27,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:27" (1/1) ... [2022-07-13 21:51:27,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:27" (1/1) ... [2022-07-13 21:51:27,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:27" (1/1) ... [2022-07-13 21:51:27,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:27" (1/1) ... [2022-07-13 21:51:27,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:27" (1/1) ... [2022-07-13 21:51:27,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:27" (1/1) ... [2022-07-13 21:51:27,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:51:27,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:51:27,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:51:27,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:51:27,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:27" (1/1) ... [2022-07-13 21:51:27,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:51:27,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:51:27,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 21:51:27,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 21:51:27,975 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2022-07-13 21:51:27,975 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2022-07-13 21:51:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:51:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 21:51:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2022-07-13 21:51:27,976 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2022-07-13 21:51:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-13 21:51:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:51:27,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 21:51:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:51:27,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:51:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:51:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:51:27,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:51:27,978 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 21:51:28,194 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:51:28,195 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:51:28,426 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:51:28,431 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:51:28,431 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 21:51:28,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:51:28 BoogieIcfgContainer [2022-07-13 21:51:28,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:51:28,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:51:28,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:51:28,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:51:28,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:51:27" (1/3) ... [2022-07-13 21:51:28,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1871a772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:51:28, skipping insertion in model container [2022-07-13 21:51:28,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:51:27" (2/3) ... [2022-07-13 21:51:28,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1871a772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:51:28, skipping insertion in model container [2022-07-13 21:51:28,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:51:28" (3/3) ... [2022-07-13 21:51:28,438 INFO L111 eAbstractionObserver]: Analyzing ICFG race-4_2-thread_local_vars.i [2022-07-13 21:51:28,442 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:51:28,465 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:51:28,466 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-07-13 21:51:28,466 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:51:28,520 INFO L135 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-07-13 21:51:28,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 321 places, 353 transitions, 736 flow [2022-07-13 21:51:28,663 INFO L129 PetriNetUnfolder]: 35/363 cut-off events. [2022-07-13 21:51:28,664 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-13 21:51:28,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 363 events. 35/363 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 933 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 250. Up to 11 conditions per place. [2022-07-13 21:51:28,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 321 places, 353 transitions, 736 flow [2022-07-13 21:51:28,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 238 transitions, 493 flow [2022-07-13 21:51:28,684 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:51:28,689 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1c10b3f7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@765db4cb [2022-07-13 21:51:28,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-07-13 21:51:28,695 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2022-07-13 21:51:28,695 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:51:28,696 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:51:28,696 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:51:28,697 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-07-13 21:51:28,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:51:28,702 INFO L85 PathProgramCache]: Analyzing trace with hash -380157774, now seen corresponding path program 1 times [2022-07-13 21:51:28,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:51:28,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502912196] [2022-07-13 21:51:28,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:51:28,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:51:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:51:29,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:51:29,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:51:29,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502912196] [2022-07-13 21:51:29,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502912196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:51:29,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:51:29,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:51:29,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78015230] [2022-07-13 21:51:29,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:51:29,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:51:29,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:51:29,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:51:29,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:51:29,037 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 353 [2022-07-13 21:51:29,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 238 transitions, 493 flow. Second operand has 5 states, 5 states have (on average 287.2) internal successors, (1436), 5 states have internal predecessors, (1436), 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) [2022-07-13 21:51:29,041 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:51:29,041 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 353 [2022-07-13 21:51:29,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:51:29,203 INFO L129 PetriNetUnfolder]: 81/713 cut-off events. [2022-07-13 21:51:29,203 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-07-13 21:51:29,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 713 events. 81/713 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3345 event pairs, 8 based on Foata normal form. 49/680 useless extension candidates. Maximal degree in co-relation 573. Up to 61 conditions per place. [2022-07-13 21:51:29,209 INFO L132 encePairwiseOnDemand]: 331/353 looper letters, 26 selfloop transitions, 12 changer transitions 0/228 dead transitions. [2022-07-13 21:51:29,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 228 transitions, 552 flow [2022-07-13 21:51:29,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:51:29,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 21:51:29,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2060 transitions. [2022-07-13 21:51:29,224 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8336705787130716 [2022-07-13 21:51:29,224 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2060 transitions. [2022-07-13 21:51:29,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2060 transitions. [2022-07-13 21:51:29,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:51:29,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2060 transitions. [2022-07-13 21:51:29,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 294.2857142857143) internal successors, (2060), 7 states have internal predecessors, (2060), 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) [2022-07-13 21:51:29,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 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) [2022-07-13 21:51:29,243 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 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) [2022-07-13 21:51:29,245 INFO L186 Difference]: Start difference. First operand has 222 places, 238 transitions, 493 flow. Second operand 7 states and 2060 transitions. [2022-07-13 21:51:29,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 228 transitions, 552 flow [2022-07-13 21:51:29,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 228 transitions, 548 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 21:51:29,253 INFO L242 Difference]: Finished difference. Result has 219 places, 223 transitions, 494 flow [2022-07-13 21:51:29,255 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=494, PETRI_PLACES=219, PETRI_TRANSITIONS=223} [2022-07-13 21:51:29,258 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, -3 predicate places. [2022-07-13 21:51:29,258 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 223 transitions, 494 flow [2022-07-13 21:51:29,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 287.2) internal successors, (1436), 5 states have internal predecessors, (1436), 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) [2022-07-13 21:51:29,259 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:51:29,259 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:51:29,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:51:29,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-07-13 21:51:29,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:51:29,260 INFO L85 PathProgramCache]: Analyzing trace with hash -511146899, now seen corresponding path program 1 times [2022-07-13 21:51:29,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:51:29,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288510400] [2022-07-13 21:51:29,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:51:29,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:51:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:51:29,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:51:29,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:51:29,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288510400] [2022-07-13 21:51:29,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288510400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:51:29,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:51:29,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:51:29,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268832222] [2022-07-13 21:51:29,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:51:29,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:51:29,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:51:29,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:51:29,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:51:29,337 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 353 [2022-07-13 21:51:29,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 223 transitions, 494 flow. Second operand has 5 states, 5 states have (on average 288.2) internal successors, (1441), 5 states have internal predecessors, (1441), 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) [2022-07-13 21:51:29,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:51:29,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 353 [2022-07-13 21:51:29,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:51:29,440 INFO L129 PetriNetUnfolder]: 82/736 cut-off events. [2022-07-13 21:51:29,440 INFO L130 PetriNetUnfolder]: For 61/67 co-relation queries the response was YES. [2022-07-13 21:51:29,443 INFO L84 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 736 events. 82/736 cut-off events. For 61/67 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3472 event pairs, 13 based on Foata normal form. 1/656 useless extension candidates. Maximal degree in co-relation 619. Up to 77 conditions per place. [2022-07-13 21:51:29,446 INFO L132 encePairwiseOnDemand]: 345/353 looper letters, 27 selfloop transitions, 3 changer transitions 7/223 dead transitions. [2022-07-13 21:51:29,446 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 223 transitions, 564 flow [2022-07-13 21:51:29,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:51:29,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-13 21:51:29,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1748 transitions. [2022-07-13 21:51:29,449 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8253068932955618 [2022-07-13 21:51:29,449 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1748 transitions. [2022-07-13 21:51:29,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1748 transitions. [2022-07-13 21:51:29,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:51:29,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1748 transitions. [2022-07-13 21:51:29,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 291.3333333333333) internal successors, (1748), 6 states have internal predecessors, (1748), 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) [2022-07-13 21:51:29,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 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) [2022-07-13 21:51:29,456 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 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) [2022-07-13 21:51:29,456 INFO L186 Difference]: Start difference. First operand has 219 places, 223 transitions, 494 flow. Second operand 6 states and 1748 transitions. [2022-07-13 21:51:29,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 223 transitions, 564 flow [2022-07-13 21:51:29,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 223 transitions, 545 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-13 21:51:29,461 INFO L242 Difference]: Finished difference. Result has 217 places, 214 transitions, 461 flow [2022-07-13 21:51:29,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=461, PETRI_PLACES=217, PETRI_TRANSITIONS=214} [2022-07-13 21:51:29,462 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, -5 predicate places. [2022-07-13 21:51:29,462 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 214 transitions, 461 flow [2022-07-13 21:51:29,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 288.2) internal successors, (1441), 5 states have internal predecessors, (1441), 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) [2022-07-13 21:51:29,463 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:51:29,464 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:51:29,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:51:29,464 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread_usbErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-07-13 21:51:29,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:51:29,464 INFO L85 PathProgramCache]: Analyzing trace with hash 53045618, now seen corresponding path program 1 times [2022-07-13 21:51:29,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:51:29,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713328286] [2022-07-13 21:51:29,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:51:29,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:51:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:51:29,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:51:29,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:51:29,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713328286] [2022-07-13 21:51:29,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713328286] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:51:29,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:51:29,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:51:29,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422465422] [2022-07-13 21:51:29,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:51:29,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:51:29,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:51:29,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:51:29,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:51:29,615 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 353 [2022-07-13 21:51:29,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 214 transitions, 461 flow. Second operand has 5 states, 5 states have (on average 287.8) internal successors, (1439), 5 states have internal predecessors, (1439), 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) [2022-07-13 21:51:29,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:51:29,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 353 [2022-07-13 21:51:29,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:51:29,787 INFO L129 PetriNetUnfolder]: 147/1088 cut-off events. [2022-07-13 21:51:29,788 INFO L130 PetriNetUnfolder]: For 82/94 co-relation queries the response was YES. [2022-07-13 21:51:29,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 1088 events. 147/1088 cut-off events. For 82/94 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 6686 event pairs, 12 based on Foata normal form. 0/977 useless extension candidates. Maximal degree in co-relation 1301. Up to 73 conditions per place. [2022-07-13 21:51:29,796 INFO L132 encePairwiseOnDemand]: 341/353 looper letters, 49 selfloop transitions, 20 changer transitions 0/250 dead transitions. [2022-07-13 21:51:29,796 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 250 transitions, 694 flow [2022-07-13 21:51:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:51:29,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 21:51:29,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2642 transitions. [2022-07-13 21:51:29,800 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.83160214038401 [2022-07-13 21:51:29,800 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2642 transitions. [2022-07-13 21:51:29,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2642 transitions. [2022-07-13 21:51:29,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:51:29,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2642 transitions. [2022-07-13 21:51:29,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 293.55555555555554) internal successors, (2642), 9 states have internal predecessors, (2642), 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) [2022-07-13 21:51:29,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 353.0) internal successors, (3530), 10 states have internal predecessors, (3530), 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) [2022-07-13 21:51:29,810 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 353.0) internal successors, (3530), 10 states have internal predecessors, (3530), 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) [2022-07-13 21:51:29,810 INFO L186 Difference]: Start difference. First operand has 217 places, 214 transitions, 461 flow. Second operand 9 states and 2642 transitions. [2022-07-13 21:51:29,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 250 transitions, 694 flow [2022-07-13 21:51:29,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 250 transitions, 688 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-13 21:51:29,815 INFO L242 Difference]: Finished difference. Result has 220 places, 229 transitions, 602 flow [2022-07-13 21:51:29,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=602, PETRI_PLACES=220, PETRI_TRANSITIONS=229} [2022-07-13 21:51:29,816 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, -2 predicate places. [2022-07-13 21:51:29,816 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 229 transitions, 602 flow [2022-07-13 21:51:29,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 287.8) internal successors, (1439), 5 states have internal predecessors, (1439), 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) [2022-07-13 21:51:29,817 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:51:29,817 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:51:29,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:51:29,817 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-07-13 21:51:29,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:51:29,818 INFO L85 PathProgramCache]: Analyzing trace with hash -308266431, now seen corresponding path program 1 times [2022-07-13 21:51:29,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:51:29,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056366512] [2022-07-13 21:51:29,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:51:29,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:51:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:51:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:51:29,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:51:29,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056366512] [2022-07-13 21:51:29,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056366512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:51:29,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:51:29,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:51:29,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218505446] [2022-07-13 21:51:29,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:51:29,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:51:29,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:51:29,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:51:29,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:51:29,884 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 353 [2022-07-13 21:51:29,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 229 transitions, 602 flow. Second operand has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 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) [2022-07-13 21:51:29,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:51:29,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 353 [2022-07-13 21:51:29,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:51:30,275 INFO L129 PetriNetUnfolder]: 432/2985 cut-off events. [2022-07-13 21:51:30,276 INFO L130 PetriNetUnfolder]: For 1302/1356 co-relation queries the response was YES. [2022-07-13 21:51:30,285 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4467 conditions, 2985 events. 432/2985 cut-off events. For 1302/1356 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 24751 event pairs, 44 based on Foata normal form. 14/2723 useless extension candidates. Maximal degree in co-relation 3758. Up to 156 conditions per place. [2022-07-13 21:51:30,294 INFO L132 encePairwiseOnDemand]: 342/353 looper letters, 80 selfloop transitions, 43 changer transitions 0/319 dead transitions. [2022-07-13 21:51:30,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 319 transitions, 1257 flow [2022-07-13 21:51:30,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:51:30,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 21:51:30,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2749 transitions. [2022-07-13 21:51:30,299 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8652817123072081 [2022-07-13 21:51:30,299 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2749 transitions. [2022-07-13 21:51:30,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2749 transitions. [2022-07-13 21:51:30,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:51:30,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2749 transitions. [2022-07-13 21:51:30,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 305.44444444444446) internal successors, (2749), 9 states have internal predecessors, (2749), 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) [2022-07-13 21:51:30,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 353.0) internal successors, (3530), 10 states have internal predecessors, (3530), 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) [2022-07-13 21:51:30,308 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 353.0) internal successors, (3530), 10 states have internal predecessors, (3530), 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) [2022-07-13 21:51:30,309 INFO L186 Difference]: Start difference. First operand has 220 places, 229 transitions, 602 flow. Second operand 9 states and 2749 transitions. [2022-07-13 21:51:30,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 319 transitions, 1257 flow [2022-07-13 21:51:30,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 319 transitions, 1233 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-07-13 21:51:30,317 INFO L242 Difference]: Finished difference. Result has 235 places, 265 transitions, 990 flow [2022-07-13 21:51:30,318 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=990, PETRI_PLACES=235, PETRI_TRANSITIONS=265} [2022-07-13 21:51:30,318 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 13 predicate places. [2022-07-13 21:51:30,319 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 265 transitions, 990 flow [2022-07-13 21:51:30,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 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) [2022-07-13 21:51:30,319 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:51:30,319 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:51:30,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:51:30,320 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_usbErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-07-13 21:51:30,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:51:30,320 INFO L85 PathProgramCache]: Analyzing trace with hash 472858484, now seen corresponding path program 1 times [2022-07-13 21:51:30,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:51:30,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220470131] [2022-07-13 21:51:30,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:51:30,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:51:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:51:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:51:30,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:51:30,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220470131] [2022-07-13 21:51:30,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220470131] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:51:30,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:51:30,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:51:30,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099398774] [2022-07-13 21:51:30,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:51:30,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:51:30,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:51:30,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:51:30,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:51:30,380 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 353 [2022-07-13 21:51:30,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 265 transitions, 990 flow. Second operand has 5 states, 5 states have (on average 287.8) internal successors, (1439), 5 states have internal predecessors, (1439), 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) [2022-07-13 21:51:30,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:51:30,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 353 [2022-07-13 21:51:30,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:51:30,944 INFO L129 PetriNetUnfolder]: 517/3583 cut-off events. [2022-07-13 21:51:30,945 INFO L130 PetriNetUnfolder]: For 4465/4662 co-relation queries the response was YES. [2022-07-13 21:51:30,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6589 conditions, 3583 events. 517/3583 cut-off events. For 4465/4662 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 29883 event pairs, 50 based on Foata normal form. 38/3305 useless extension candidates. Maximal degree in co-relation 5408. Up to 280 conditions per place. [2022-07-13 21:51:30,975 INFO L132 encePairwiseOnDemand]: 338/353 looper letters, 111 selfloop transitions, 46 changer transitions 0/344 dead transitions. [2022-07-13 21:51:30,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 344 transitions, 1979 flow [2022-07-13 21:51:30,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:51:30,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 21:51:30,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2652 transitions. [2022-07-13 21:51:30,980 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8347497639282342 [2022-07-13 21:51:30,980 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2652 transitions. [2022-07-13 21:51:30,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2652 transitions. [2022-07-13 21:51:30,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:51:30,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2652 transitions. [2022-07-13 21:51:30,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 294.6666666666667) internal successors, (2652), 9 states have internal predecessors, (2652), 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) [2022-07-13 21:51:30,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 353.0) internal successors, (3530), 10 states have internal predecessors, (3530), 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) [2022-07-13 21:51:30,989 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 353.0) internal successors, (3530), 10 states have internal predecessors, (3530), 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) [2022-07-13 21:51:30,989 INFO L186 Difference]: Start difference. First operand has 235 places, 265 transitions, 990 flow. Second operand 9 states and 2652 transitions. [2022-07-13 21:51:30,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 344 transitions, 1979 flow [2022-07-13 21:51:31,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 344 transitions, 1919 flow, removed 30 selfloop flow, removed 0 redundant places. [2022-07-13 21:51:31,004 INFO L242 Difference]: Finished difference. Result has 249 places, 297 transitions, 1469 flow [2022-07-13 21:51:31,004 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1469, PETRI_PLACES=249, PETRI_TRANSITIONS=297} [2022-07-13 21:51:31,005 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 27 predicate places. [2022-07-13 21:51:31,005 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 297 transitions, 1469 flow [2022-07-13 21:51:31,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 287.8) internal successors, (1439), 5 states have internal predecessors, (1439), 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) [2022-07-13 21:51:31,006 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:51:31,006 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:51:31,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:51:31,006 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-07-13 21:51:31,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:51:31,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1054535645, now seen corresponding path program 1 times [2022-07-13 21:51:31,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:51:31,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876430012] [2022-07-13 21:51:31,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:51:31,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:51:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:51:31,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:51:31,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:51:31,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876430012] [2022-07-13 21:51:31,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876430012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:51:31,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:51:31,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:51:31,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210467071] [2022-07-13 21:51:31,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:51:31,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:51:31,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:51:31,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:51:31,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:51:31,068 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 353 [2022-07-13 21:51:31,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 297 transitions, 1469 flow. Second operand has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 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) [2022-07-13 21:51:31,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:51:31,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 353 [2022-07-13 21:51:31,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:51:31,511 INFO L129 PetriNetUnfolder]: 504/3564 cut-off events. [2022-07-13 21:51:31,511 INFO L130 PetriNetUnfolder]: For 5716/5935 co-relation queries the response was YES. [2022-07-13 21:51:31,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6946 conditions, 3564 events. 504/3564 cut-off events. For 5716/5935 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 29758 event pairs, 49 based on Foata normal form. 14/3269 useless extension candidates. Maximal degree in co-relation 5559. Up to 429 conditions per place. [2022-07-13 21:51:31,538 INFO L132 encePairwiseOnDemand]: 345/353 looper letters, 94 selfloop transitions, 14 changer transitions 17/329 dead transitions. [2022-07-13 21:51:31,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 329 transitions, 1991 flow [2022-07-13 21:51:31,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 21:51:31,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-13 21:51:31,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2334 transitions. [2022-07-13 21:51:31,542 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8264872521246459 [2022-07-13 21:51:31,542 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2334 transitions. [2022-07-13 21:51:31,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2334 transitions. [2022-07-13 21:51:31,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:51:31,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2334 transitions. [2022-07-13 21:51:31,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 291.75) internal successors, (2334), 8 states have internal predecessors, (2334), 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) [2022-07-13 21:51:31,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 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) [2022-07-13 21:51:31,550 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 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) [2022-07-13 21:51:31,550 INFO L186 Difference]: Start difference. First operand has 249 places, 297 transitions, 1469 flow. Second operand 8 states and 2334 transitions. [2022-07-13 21:51:31,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 329 transitions, 1991 flow [2022-07-13 21:51:31,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 329 transitions, 1851 flow, removed 67 selfloop flow, removed 1 redundant places. [2022-07-13 21:51:31,569 INFO L242 Difference]: Finished difference. Result has 261 places, 302 transitions, 1430 flow [2022-07-13 21:51:31,569 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1343, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1430, PETRI_PLACES=261, PETRI_TRANSITIONS=302} [2022-07-13 21:51:31,570 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 39 predicate places. [2022-07-13 21:51:31,570 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 302 transitions, 1430 flow [2022-07-13 21:51:31,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 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) [2022-07-13 21:51:31,571 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:51:31,571 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:51:31,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:51:31,571 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_usbErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-07-13 21:51:31,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:51:31,572 INFO L85 PathProgramCache]: Analyzing trace with hash -372303228, now seen corresponding path program 1 times [2022-07-13 21:51:31,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:51:31,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824723140] [2022-07-13 21:51:31,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:51:31,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:51:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:51:31,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:51:31,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:51:31,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824723140] [2022-07-13 21:51:31,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824723140] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:51:31,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:51:31,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:51:31,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416241670] [2022-07-13 21:51:31,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:51:31,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:51:31,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:51:31,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:51:31,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:51:31,630 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 353 [2022-07-13 21:51:31,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 302 transitions, 1430 flow. Second operand has 5 states, 5 states have (on average 311.0) internal successors, (1555), 5 states have internal predecessors, (1555), 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) [2022-07-13 21:51:31,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:51:31,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 353 [2022-07-13 21:51:31,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:51:32,432 INFO L129 PetriNetUnfolder]: 598/5512 cut-off events. [2022-07-13 21:51:32,432 INFO L130 PetriNetUnfolder]: For 6565/6833 co-relation queries the response was YES. [2022-07-13 21:51:32,459 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10525 conditions, 5512 events. 598/5512 cut-off events. For 6565/6833 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 54726 event pairs, 24 based on Foata normal form. 37/5116 useless extension candidates. Maximal degree in co-relation 10440. Up to 278 conditions per place. [2022-07-13 21:51:32,473 INFO L132 encePairwiseOnDemand]: 346/353 looper letters, 28 selfloop transitions, 9 changer transitions 0/322 dead transitions. [2022-07-13 21:51:32,474 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 322 transitions, 1557 flow [2022-07-13 21:51:32,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:51:32,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 21:51:32,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2199 transitions. [2022-07-13 21:51:32,477 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8899231080534197 [2022-07-13 21:51:32,477 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2199 transitions. [2022-07-13 21:51:32,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2199 transitions. [2022-07-13 21:51:32,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:51:32,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2199 transitions. [2022-07-13 21:51:32,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 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) [2022-07-13 21:51:32,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 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) [2022-07-13 21:51:32,484 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 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) [2022-07-13 21:51:32,484 INFO L186 Difference]: Start difference. First operand has 261 places, 302 transitions, 1430 flow. Second operand 7 states and 2199 transitions. [2022-07-13 21:51:32,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 322 transitions, 1557 flow [2022-07-13 21:51:32,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 322 transitions, 1523 flow, removed 17 selfloop flow, removed 2 redundant places. [2022-07-13 21:51:32,514 INFO L242 Difference]: Finished difference. Result has 269 places, 310 transitions, 1464 flow [2022-07-13 21:51:32,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1464, PETRI_PLACES=269, PETRI_TRANSITIONS=310} [2022-07-13 21:51:32,515 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 47 predicate places. [2022-07-13 21:51:32,516 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 310 transitions, 1464 flow [2022-07-13 21:51:32,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 311.0) internal successors, (1555), 5 states have internal predecessors, (1555), 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) [2022-07-13 21:51:32,516 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:51:32,516 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:51:32,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:51:32,517 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread_usbErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-07-13 21:51:32,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:51:32,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1771912868, now seen corresponding path program 1 times [2022-07-13 21:51:32,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:51:32,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845936120] [2022-07-13 21:51:32,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:51:32,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:51:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:51:32,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:51:32,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:51:32,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845936120] [2022-07-13 21:51:32,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845936120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:51:32,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:51:32,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:51:32,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692068280] [2022-07-13 21:51:32,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:51:32,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:51:32,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:51:32,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:51:32,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:51:32,571 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 353 [2022-07-13 21:51:32,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 310 transitions, 1464 flow. Second operand has 5 states, 5 states have (on average 310.2) internal successors, (1551), 5 states have internal predecessors, (1551), 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) [2022-07-13 21:51:32,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:51:32,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 353 [2022-07-13 21:51:32,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:51:33,580 INFO L129 PetriNetUnfolder]: 706/6838 cut-off events. [2022-07-13 21:51:33,580 INFO L130 PetriNetUnfolder]: For 7440/7719 co-relation queries the response was YES. [2022-07-13 21:51:33,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13018 conditions, 6838 events. 706/6838 cut-off events. For 7440/7719 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 70595 event pairs, 26 based on Foata normal form. 47/6364 useless extension candidates. Maximal degree in co-relation 11945. Up to 318 conditions per place. [2022-07-13 21:51:33,649 INFO L132 encePairwiseOnDemand]: 345/353 looper letters, 25 selfloop transitions, 8 changer transitions 4/319 dead transitions. [2022-07-13 21:51:33,649 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 319 transitions, 1515 flow [2022-07-13 21:51:33,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:51:33,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-13 21:51:33,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2188 transitions. [2022-07-13 21:51:33,653 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8854714690408741 [2022-07-13 21:51:33,653 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2188 transitions. [2022-07-13 21:51:33,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2188 transitions. [2022-07-13 21:51:33,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:51:33,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2188 transitions. [2022-07-13 21:51:33,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 312.57142857142856) internal successors, (2188), 7 states have internal predecessors, (2188), 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) [2022-07-13 21:51:33,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 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) [2022-07-13 21:51:33,737 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 353.0) internal successors, (2824), 8 states have internal predecessors, (2824), 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) [2022-07-13 21:51:33,737 INFO L186 Difference]: Start difference. First operand has 269 places, 310 transitions, 1464 flow. Second operand 7 states and 2188 transitions. [2022-07-13 21:51:33,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 319 transitions, 1515 flow [2022-07-13 21:51:33,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 319 transitions, 1515 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-13 21:51:33,772 INFO L242 Difference]: Finished difference. Result has 280 places, 307 transitions, 1424 flow [2022-07-13 21:51:33,773 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1405, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1424, PETRI_PLACES=280, PETRI_TRANSITIONS=307} [2022-07-13 21:51:33,773 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 58 predicate places. [2022-07-13 21:51:33,773 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 307 transitions, 1424 flow [2022-07-13 21:51:33,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 310.2) internal successors, (1551), 5 states have internal predecessors, (1551), 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) [2022-07-13 21:51:33,774 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:51:33,774 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:51:33,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:51:33,774 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2022-07-13 21:51:33,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:51:33,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1047579697, now seen corresponding path program 1 times [2022-07-13 21:51:33,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:51:33,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447155695] [2022-07-13 21:51:33,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:51:33,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:51:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:51:33,796 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:51:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:51:33,829 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:51:33,829 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:51:33,830 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION (13 of 14 remaining) [2022-07-13 21:51:33,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION (12 of 14 remaining) [2022-07-13 21:51:33,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (11 of 14 remaining) [2022-07-13 21:51:33,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (10 of 14 remaining) [2022-07-13 21:51:33,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (9 of 14 remaining) [2022-07-13 21:51:33,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 14 remaining) [2022-07-13 21:51:33,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr2ASSERT_VIOLATIONERROR_FUNCTION (7 of 14 remaining) [2022-07-13 21:51:33,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 14 remaining) [2022-07-13 21:51:33,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 14 remaining) [2022-07-13 21:51:33,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2022-07-13 21:51:33,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 14 remaining) [2022-07-13 21:51:33,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 14 remaining) [2022-07-13 21:51:33,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 14 remaining) [2022-07-13 21:51:33,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 14 remaining) [2022-07-13 21:51:33,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:51:33,834 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:51:33,837 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 21:51:33,837 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 21:51:33,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 09:51:33 BasicIcfg [2022-07-13 21:51:33,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 21:51:33,883 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 21:51:33,883 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 21:51:33,883 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 21:51:33,883 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:51:28" (3/4) ... [2022-07-13 21:51:33,885 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-13 21:51:33,927 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 21:51:33,927 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 21:51:33,927 INFO L158 Benchmark]: Toolchain (without parser) took 6915.48ms. Allocated memory was 146.8MB in the beginning and 1.0GB in the end (delta: 864.0MB). Free memory was 108.7MB in the beginning and 719.6MB in the end (delta: -610.9MB). Peak memory consumption was 253.4MB. Max. memory is 16.1GB. [2022-07-13 21:51:33,928 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 81.8MB. Free memory was 37.1MB in the beginning and 37.1MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:51:33,928 INFO L158 Benchmark]: CACSL2BoogieTranslator took 818.82ms. Allocated memory is still 146.8MB. Free memory was 108.4MB in the beginning and 74.7MB in the end (delta: 33.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-07-13 21:51:33,928 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.77ms. Allocated memory is still 146.8MB. Free memory was 74.7MB in the beginning and 71.3MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 21:51:33,928 INFO L158 Benchmark]: Boogie Preprocessor took 24.39ms. Allocated memory is still 146.8MB. Free memory was 71.3MB in the beginning and 68.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:51:33,929 INFO L158 Benchmark]: RCFGBuilder took 513.84ms. Allocated memory is still 146.8MB. Free memory was 68.4MB in the beginning and 46.2MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-07-13 21:51:33,929 INFO L158 Benchmark]: TraceAbstraction took 5448.15ms. Allocated memory was 146.8MB in the beginning and 1.0GB in the end (delta: 864.0MB). Free memory was 46.2MB in the beginning and 735.4MB in the end (delta: -689.2MB). Peak memory consumption was 175.6MB. Max. memory is 16.1GB. [2022-07-13 21:51:33,929 INFO L158 Benchmark]: Witness Printer took 44.18ms. Allocated memory is still 1.0GB. Free memory was 735.4MB in the beginning and 719.6MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-13 21:51:33,930 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 81.8MB. Free memory was 37.1MB in the beginning and 37.1MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 818.82ms. Allocated memory is still 146.8MB. Free memory was 108.4MB in the beginning and 74.7MB in the end (delta: 33.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.77ms. Allocated memory is still 146.8MB. Free memory was 74.7MB in the beginning and 71.3MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.39ms. Allocated memory is still 146.8MB. Free memory was 71.3MB in the beginning and 68.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 513.84ms. Allocated memory is still 146.8MB. Free memory was 68.4MB in the beginning and 46.2MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 5448.15ms. Allocated memory was 146.8MB in the beginning and 1.0GB in the end (delta: 864.0MB). Free memory was 46.2MB in the beginning and 735.4MB in the end (delta: -689.2MB). Peak memory consumption was 175.6MB. Max. memory is 16.1GB. * Witness Printer took 44.18ms. Allocated memory is still 1.0GB. Free memory was 735.4MB in the beginning and 719.6MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. 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. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1693]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1694] 0 pthread_t t1, t2; VAL [t1={3:0}, t2={4:0}] [L1695] 0 pthread_mutex_t mutex; VAL [mutex={5:0}, t1={3:0}, t2={4:0}] [L1696] 0 int pdev; VAL [mutex={5:0}, pdev=0, t1={3:0}, t2={4:0}] [L1741] 0 int ldv_usb_state; VAL [ldv_usb_state=0, mutex={5:0}, pdev=0, t1={3:0}, t2={4:0}] [L1798] CALL 0 module_init() [L1779] 0 pdev = 1 VAL [ldv_usb_state=0, mutex={5:0}, pdev=1, t1={3:0}, t2={4:0}] [L1780] CALL 0 ldv_assert(pdev==1) [L1693] COND FALSE 0 !(!expression) VAL [\old(expression)=1, expression=1, ldv_usb_state=0, mutex={5:0}, pdev=1, t1={3:0}, t2={4:0}] [L1780] RET 0 ldv_assert(pdev==1) [L1781] COND TRUE 0 __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, ldv_usb_state=0, mutex={5:0}, pdev=1, t1={3:0}, t2={4:0}] [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 VAL [arg={0:0}, arg={0:0}, ldv_usb_state=0, mutex={5:0}, pdev=1, t1={3:0}, t2={4:0}] [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 VAL [arg={0:0}, arg={0:0}, ldv_usb_state=0, mutex={5:0}, pdev=1, t1={3:0}, t2={4:0}] [L1747] 1 case 0: VAL [__VERIFIER_nondet_int()=0, arg={0:0}, arg={0:0}, ldv_usb_state=0, mutex={5:0}, pdev=1, t1={3:0}, t2={4:0}] [L1748] COND TRUE 1 ldv_usb_state==0 VAL [__VERIFIER_nondet_int()=0, arg={0:0}, arg={0:0}, ldv_usb_state=0, mutex={5:0}, pdev=1, t1={3:0}, t2={4:0}] [L1749] CALL, EXPR 1 ath_ahb_probe() [L1730] 1 int error; VAL [ldv_usb_state=0, mutex={5:0}, pdev=1, t1={3:0}, t2={4:0}] [L1731] CALL, EXPR 1 ieee80211_register_hw() [L1717] COND TRUE 1 __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, ldv_usb_state=0, mutex={5:0}, pdev=1, t1={3:0}, t2={4:0}] [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; VAL [\result=0, ldv_usb_state=0, mutex={5:0}, pdev=1, t1={3:0}, t2={4:0}] [L1731] RET, EXPR 1 ieee80211_register_hw() [L1731] 1 error = ieee80211_register_hw() VAL [error=0, ieee80211_register_hw()=0, ldv_usb_state=0, mutex={5:0}, pdev=1, t1={3:0}, t2={4:0}] [L1732] COND FALSE 1 !(\read(error)) VAL [error=0, ldv_usb_state=0, mutex={5:0}, pdev=1, t1={3:0}, t2={4:0}] [L1734] 1 return 0; VAL [\result=0, error=0, ldv_usb_state=0, mutex={5:0}, pdev=1, t1={3:0}, t2={4:0}] [L1749] RET, EXPR 1 ath_ahb_probe() [L1749] 1 probe_ret = ath_ahb_probe() VAL [__VERIFIER_nondet_int()=0, arg={0:0}, arg={0:0}, ath_ahb_probe()=0, ldv_usb_state=0, mutex={5:0}, pdev=1, probe_ret=0, t1={3:0}, t2={4:0}] [L1750] COND FALSE 1 !(probe_ret!=0) VAL [__VERIFIER_nondet_int()=0, arg={0:0}, arg={0:0}, ldv_usb_state=0, mutex={5:0}, pdev=1, probe_ret=0, t1={3:0}, t2={4:0}] [L1752] 1 ldv_usb_state = 1 VAL [__VERIFIER_nondet_int()=0, arg={0:0}, arg={0:0}, ldv_usb_state=1, mutex={5:0}, pdev=1, probe_ret=0, t1={3:0}, t2={4:0}] [L1704] COND TRUE 2 1 VAL [arg={0:0}, arg={0:0}, ldv_usb_state=1, mutex={5:0}, pdev=1, t1={3:0}, t2={4:0}] [L1706] 2 case 1: VAL [__VERIFIER_nondet_int()=1, arg={0:0}, arg={0:0}, ldv_usb_state=1, mutex={5:0}, pdev=1, t1={3:0}, t2={4:0}] [L1707] CALL 2 ath9k_flush() [L1699] 2 pdev = 6 VAL [ldv_usb_state=1, mutex={5:0}, pdev=6, 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=7, probe_ret=0, t1={3:0}, t2={4:0}] [L1700] CALL 2 ldv_assert(pdev==6) [L1693] COND TRUE 2 !expression VAL [\old(expression)=1, \old(expression)=0, expression=1, expression=0, ldv_usb_state=1, mutex={5:0}, pdev=7, t1={3:0}, t2={4:0}] [L1693] 2 reach_error() VAL [\old(expression)=1, \old(expression)=0, expression=1, expression=0, ldv_usb_state=1, mutex={5:0}, pdev=7, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1693]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1693]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1693]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable 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: 1693]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1693]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1693]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable 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, 348 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.3s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 320 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 320 mSDsluCounter, 440 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 373 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 484 IncrementalHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 174 mSDtfsCounter, 484 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1469occurred in iteration=5, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 708 NumberOfCodeBlocks, 708 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 599 ConstructedInterpolants, 0 QuantifiedInterpolants, 701 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2022-07-13 21:51:33,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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