./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 791161d1 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-?-791161d [2022-07-22 21:28:09,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:28:09,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:28:09,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:28:09,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:28:09,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:28:09,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:28:09,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:28:09,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:28:09,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:28:09,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:28:09,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:28:09,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:28:09,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:28:09,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:28:09,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:28:09,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:28:09,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:28:09,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:28:09,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:28:09,108 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:28:09,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:28:09,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:28:09,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:28:09,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:28:09,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:28:09,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:28:09,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:28:09,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:28:09,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:28:09,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:28:09,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:28:09,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:28:09,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:28:09,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:28:09,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:28:09,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:28:09,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:28:09,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:28:09,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:28:09,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:28:09,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:28:09,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:28:09,154 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:28:09,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:28:09,155 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:28:09,155 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:28:09,155 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:28:09,156 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:28:09,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:28:09,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:28:09,156 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:28:09,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:28:09,157 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:28:09,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:28:09,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:28:09,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:28:09,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:28:09,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:28:09,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:28:09,158 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:28:09,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:28:09,158 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:28:09,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:28:09,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:28:09,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:28:09,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:28:09,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:28:09,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:28:09,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:28:09,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:28:09,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:28:09,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:28:09,161 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:28:09,161 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:28:09,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:28:09,161 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f799b8cb369af433cd7b4f4a2ae1c7efd2306d185f06da0302d2727c00c6bf0 [2022-07-22 21:28:09,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:28:09,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:28:09,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:28:09,355 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:28:09,355 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:28:09,356 INFO L432 ainManager$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 [2022-07-22 21:28:09,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/087f484ab/6fecfff44e374d96bc13fc3ea9d6d5d5/FLAG5d1d92668 [2022-07-22 21:28:09,877 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:28:09,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-4_2-thread_local_vars.i [2022-07-22 21:28:09,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/087f484ab/6fecfff44e374d96bc13fc3ea9d6d5d5/FLAG5d1d92668 [2022-07-22 21:28:09,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/087f484ab/6fecfff44e374d96bc13fc3ea9d6d5d5 [2022-07-22 21:28:09,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:28:09,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:28:09,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:28:09,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:28:09,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:28:09,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:28:09" (1/1) ... [2022-07-22 21:28:09,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2facf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:09, skipping insertion in model container [2022-07-22 21:28:09,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:28:09" (1/1) ... [2022-07-22 21:28:09,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:28:09,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:28:10,433 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] [2022-07-22 21:28:10,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:28:10,479 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:28:10,520 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] [2022-07-22 21:28:10,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:28:10,632 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:28:10,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:10 WrapperNode [2022-07-22 21:28:10,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:28:10,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:28:10,634 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:28:10,634 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:28:10,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:10" (1/1) ... [2022-07-22 21:28:10,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:10" (1/1) ... [2022-07-22 21:28:10,682 INFO L137 Inliner]: procedures = 486, calls = 44, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 209 [2022-07-22 21:28:10,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:28:10,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:28:10,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:28:10,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:28:10,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:10" (1/1) ... [2022-07-22 21:28:10,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:10" (1/1) ... [2022-07-22 21:28:10,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:10" (1/1) ... [2022-07-22 21:28:10,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:10" (1/1) ... [2022-07-22 21:28:10,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:10" (1/1) ... [2022-07-22 21:28:10,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:10" (1/1) ... [2022-07-22 21:28:10,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:10" (1/1) ... [2022-07-22 21:28:10,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:28:10,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:28:10,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:28:10,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:28:10,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:10" (1/1) ... [2022-07-22 21:28:10,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:28:10,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:28:10,759 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) [2022-07-22 21:28:10,765 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 [2022-07-22 21:28:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2022-07-22 21:28:10,791 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2022-07-22 21:28:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:28:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:28:10,791 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2022-07-22 21:28:10,792 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2022-07-22 21:28:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-22 21:28:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:28:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 21:28:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:28:10,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:28:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:28:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:28:10,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:28:10,794 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:28:11,049 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:28:11,050 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:28:11,305 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:28:11,311 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:28:11,311 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 21:28:11,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:28:11 BoogieIcfgContainer [2022-07-22 21:28:11,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:28:11,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:28:11,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:28:11,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:28:11,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:28:09" (1/3) ... [2022-07-22 21:28:11,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6449fe89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:28:11, skipping insertion in model container [2022-07-22 21:28:11,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:10" (2/3) ... [2022-07-22 21:28:11,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6449fe89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:28:11, skipping insertion in model container [2022-07-22 21:28:11,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:28:11" (3/3) ... [2022-07-22 21:28:11,322 INFO L111 eAbstractionObserver]: Analyzing ICFG race-4_2-thread_local_vars.i [2022-07-22 21:28:11,325 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:28:11,331 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:28:11,331 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-07-22 21:28:11,331 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:28:11,396 INFO L135 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-07-22 21:28:11,425 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 321 places, 353 transitions, 736 flow [2022-07-22 21:28:11,502 INFO L129 PetriNetUnfolder]: 35/363 cut-off events. [2022-07-22 21:28:11,502 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:28:11,506 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. [2022-07-22 21:28:11,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 321 places, 353 transitions, 736 flow [2022-07-22 21:28:11,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 238 transitions, 493 flow [2022-07-22 21:28:11,520 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:28:11,528 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@28404be9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@121b4d5a [2022-07-22 21:28:11,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-07-22 21:28:11,532 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2022-07-22 21:28:11,532 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:28:11,532 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:11,532 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] [2022-07-22 21:28:11,533 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)] === [2022-07-22 21:28:11,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:11,536 INFO L85 PathProgramCache]: Analyzing trace with hash -380157774, now seen corresponding path program 1 times [2022-07-22 21:28:11,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:11,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424235397] [2022-07-22 21:28:11,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:11,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:11,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:11,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:11,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424235397] [2022-07-22 21:28:11,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424235397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:11,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:11,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:28:11,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743884896] [2022-07-22 21:28:11,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:11,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:28:11,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:11,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:28:11,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:28:11,869 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 353 [2022-07-22 21:28:11,873 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) [2022-07-22 21:28:11,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:11,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 353 [2022-07-22 21:28:11,874 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:12,038 INFO L129 PetriNetUnfolder]: 81/713 cut-off events. [2022-07-22 21:28:12,038 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-07-22 21:28:12,043 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. [2022-07-22 21:28:12,047 INFO L132 encePairwiseOnDemand]: 331/353 looper letters, 26 selfloop transitions, 12 changer transitions 0/228 dead transitions. [2022-07-22 21:28:12,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 228 transitions, 552 flow [2022-07-22 21:28:12,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:28:12,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:28:12,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2060 transitions. [2022-07-22 21:28:12,067 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8336705787130716 [2022-07-22 21:28:12,067 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2060 transitions. [2022-07-22 21:28:12,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2060 transitions. [2022-07-22 21:28:12,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:12,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2060 transitions. [2022-07-22 21:28:12,080 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) [2022-07-22 21:28:12,088 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) [2022-07-22 21:28:12,090 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) [2022-07-22 21:28:12,091 INFO L186 Difference]: Start difference. First operand has 222 places, 238 transitions, 493 flow. Second operand 7 states and 2060 transitions. [2022-07-22 21:28:12,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 228 transitions, 552 flow [2022-07-22 21:28:12,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 228 transitions, 548 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:28:12,101 INFO L242 Difference]: Finished difference. Result has 219 places, 223 transitions, 494 flow [2022-07-22 21:28:12,102 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} [2022-07-22 21:28:12,105 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, -3 predicate places. [2022-07-22 21:28:12,106 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 223 transitions, 494 flow [2022-07-22 21:28:12,107 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) [2022-07-22 21:28:12,107 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:12,107 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] [2022-07-22 21:28:12,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:28:12,108 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)] === [2022-07-22 21:28:12,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:12,108 INFO L85 PathProgramCache]: Analyzing trace with hash -511146899, now seen corresponding path program 1 times [2022-07-22 21:28:12,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:12,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501739490] [2022-07-22 21:28:12,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:12,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:12,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:12,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:12,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501739490] [2022-07-22 21:28:12,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501739490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:12,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:12,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:28:12,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260153619] [2022-07-22 21:28:12,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:12,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:28:12,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:12,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:28:12,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:28:12,201 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 353 [2022-07-22 21:28:12,203 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) [2022-07-22 21:28:12,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:12,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 353 [2022-07-22 21:28:12,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:12,356 INFO L129 PetriNetUnfolder]: 82/736 cut-off events. [2022-07-22 21:28:12,356 INFO L130 PetriNetUnfolder]: For 61/67 co-relation queries the response was YES. [2022-07-22 21:28:12,360 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. [2022-07-22 21:28:12,363 INFO L132 encePairwiseOnDemand]: 345/353 looper letters, 27 selfloop transitions, 3 changer transitions 7/223 dead transitions. [2022-07-22 21:28:12,363 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 223 transitions, 564 flow [2022-07-22 21:28:12,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:28:12,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:28:12,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1748 transitions. [2022-07-22 21:28:12,367 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8253068932955618 [2022-07-22 21:28:12,367 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1748 transitions. [2022-07-22 21:28:12,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1748 transitions. [2022-07-22 21:28:12,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:12,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1748 transitions. [2022-07-22 21:28:12,383 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) [2022-07-22 21:28:12,386 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) [2022-07-22 21:28:12,386 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) [2022-07-22 21:28:12,387 INFO L186 Difference]: Start difference. First operand has 219 places, 223 transitions, 494 flow. Second operand 6 states and 1748 transitions. [2022-07-22 21:28:12,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 223 transitions, 564 flow [2022-07-22 21:28:12,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 223 transitions, 545 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-22 21:28:12,403 INFO L242 Difference]: Finished difference. Result has 217 places, 214 transitions, 461 flow [2022-07-22 21:28:12,403 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} [2022-07-22 21:28:12,403 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, -5 predicate places. [2022-07-22 21:28:12,404 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 214 transitions, 461 flow [2022-07-22 21:28:12,404 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) [2022-07-22 21:28:12,404 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:12,405 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] [2022-07-22 21:28:12,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:28:12,405 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)] === [2022-07-22 21:28:12,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:12,405 INFO L85 PathProgramCache]: Analyzing trace with hash 53045618, now seen corresponding path program 1 times [2022-07-22 21:28:12,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:12,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069960550] [2022-07-22 21:28:12,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:12,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:12,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:12,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:12,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069960550] [2022-07-22 21:28:12,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069960550] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:12,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:12,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:28:12,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184355104] [2022-07-22 21:28:12,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:12,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:28:12,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:12,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:28:12,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:28:12,487 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 353 [2022-07-22 21:28:12,488 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) [2022-07-22 21:28:12,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:12,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 353 [2022-07-22 21:28:12,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:12,665 INFO L129 PetriNetUnfolder]: 147/1088 cut-off events. [2022-07-22 21:28:12,665 INFO L130 PetriNetUnfolder]: For 82/94 co-relation queries the response was YES. [2022-07-22 21:28:12,670 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. [2022-07-22 21:28:12,674 INFO L132 encePairwiseOnDemand]: 341/353 looper letters, 49 selfloop transitions, 20 changer transitions 0/250 dead transitions. [2022-07-22 21:28:12,674 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 250 transitions, 694 flow [2022-07-22 21:28:12,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:28:12,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:28:12,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2642 transitions. [2022-07-22 21:28:12,678 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.83160214038401 [2022-07-22 21:28:12,678 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2642 transitions. [2022-07-22 21:28:12,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2642 transitions. [2022-07-22 21:28:12,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:12,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2642 transitions. [2022-07-22 21:28:12,683 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) [2022-07-22 21:28:12,687 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) [2022-07-22 21:28:12,688 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) [2022-07-22 21:28:12,688 INFO L186 Difference]: Start difference. First operand has 217 places, 214 transitions, 461 flow. Second operand 9 states and 2642 transitions. [2022-07-22 21:28:12,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 250 transitions, 694 flow [2022-07-22 21:28:12,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 250 transitions, 688 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:28:12,693 INFO L242 Difference]: Finished difference. Result has 220 places, 229 transitions, 602 flow [2022-07-22 21:28:12,693 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} [2022-07-22 21:28:12,694 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, -2 predicate places. [2022-07-22 21:28:12,694 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 229 transitions, 602 flow [2022-07-22 21:28:12,695 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) [2022-07-22 21:28:12,695 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:12,695 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] [2022-07-22 21:28:12,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:28:12,695 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)] === [2022-07-22 21:28:12,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:12,696 INFO L85 PathProgramCache]: Analyzing trace with hash -308266431, now seen corresponding path program 1 times [2022-07-22 21:28:12,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:12,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245748180] [2022-07-22 21:28:12,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:12,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:12,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:12,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:12,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245748180] [2022-07-22 21:28:12,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245748180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:12,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:12,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:28:12,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177464629] [2022-07-22 21:28:12,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:12,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:28:12,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:12,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:28:12,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:28:12,777 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 353 [2022-07-22 21:28:12,779 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) [2022-07-22 21:28:12,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:12,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 353 [2022-07-22 21:28:12,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:13,182 INFO L129 PetriNetUnfolder]: 432/2985 cut-off events. [2022-07-22 21:28:13,182 INFO L130 PetriNetUnfolder]: For 1302/1356 co-relation queries the response was YES. [2022-07-22 21:28:13,194 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. [2022-07-22 21:28:13,205 INFO L132 encePairwiseOnDemand]: 342/353 looper letters, 80 selfloop transitions, 43 changer transitions 0/319 dead transitions. [2022-07-22 21:28:13,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 319 transitions, 1257 flow [2022-07-22 21:28:13,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:28:13,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:28:13,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2749 transitions. [2022-07-22 21:28:13,209 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8652817123072081 [2022-07-22 21:28:13,209 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2749 transitions. [2022-07-22 21:28:13,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2749 transitions. [2022-07-22 21:28:13,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:13,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2749 transitions. [2022-07-22 21:28:13,235 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) [2022-07-22 21:28:13,238 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) [2022-07-22 21:28:13,239 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) [2022-07-22 21:28:13,239 INFO L186 Difference]: Start difference. First operand has 220 places, 229 transitions, 602 flow. Second operand 9 states and 2749 transitions. [2022-07-22 21:28:13,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 319 transitions, 1257 flow [2022-07-22 21:28:13,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 319 transitions, 1233 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-07-22 21:28:13,248 INFO L242 Difference]: Finished difference. Result has 235 places, 265 transitions, 990 flow [2022-07-22 21:28:13,249 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} [2022-07-22 21:28:13,249 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 13 predicate places. [2022-07-22 21:28:13,249 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 265 transitions, 990 flow [2022-07-22 21:28:13,250 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) [2022-07-22 21:28:13,250 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:13,250 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] [2022-07-22 21:28:13,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:28:13,251 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)] === [2022-07-22 21:28:13,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:13,251 INFO L85 PathProgramCache]: Analyzing trace with hash 472858484, now seen corresponding path program 1 times [2022-07-22 21:28:13,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:13,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246603909] [2022-07-22 21:28:13,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:13,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:13,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:13,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246603909] [2022-07-22 21:28:13,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246603909] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:13,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:13,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:28:13,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431861503] [2022-07-22 21:28:13,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:13,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:28:13,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:13,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:28:13,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:28:13,313 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 353 [2022-07-22 21:28:13,314 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) [2022-07-22 21:28:13,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:13,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 353 [2022-07-22 21:28:13,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:13,830 INFO L129 PetriNetUnfolder]: 517/3583 cut-off events. [2022-07-22 21:28:13,830 INFO L130 PetriNetUnfolder]: For 4465/4662 co-relation queries the response was YES. [2022-07-22 21:28:13,848 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. [2022-07-22 21:28:13,880 INFO L132 encePairwiseOnDemand]: 338/353 looper letters, 111 selfloop transitions, 46 changer transitions 0/344 dead transitions. [2022-07-22 21:28:13,880 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 344 transitions, 1979 flow [2022-07-22 21:28:13,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:28:13,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:28:13,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2652 transitions. [2022-07-22 21:28:13,885 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8347497639282342 [2022-07-22 21:28:13,885 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2652 transitions. [2022-07-22 21:28:13,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2652 transitions. [2022-07-22 21:28:13,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:13,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2652 transitions. [2022-07-22 21:28:13,889 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) [2022-07-22 21:28:13,893 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) [2022-07-22 21:28:13,894 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) [2022-07-22 21:28:13,894 INFO L186 Difference]: Start difference. First operand has 235 places, 265 transitions, 990 flow. Second operand 9 states and 2652 transitions. [2022-07-22 21:28:13,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 344 transitions, 1979 flow [2022-07-22 21:28:13,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 344 transitions, 1919 flow, removed 30 selfloop flow, removed 0 redundant places. [2022-07-22 21:28:13,908 INFO L242 Difference]: Finished difference. Result has 249 places, 297 transitions, 1469 flow [2022-07-22 21:28:13,909 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} [2022-07-22 21:28:13,910 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 27 predicate places. [2022-07-22 21:28:13,910 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 297 transitions, 1469 flow [2022-07-22 21:28:13,910 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) [2022-07-22 21:28:13,910 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:13,911 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] [2022-07-22 21:28:13,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:28:13,911 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)] === [2022-07-22 21:28:13,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:13,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1054535645, now seen corresponding path program 1 times [2022-07-22 21:28:13,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:13,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78627065] [2022-07-22 21:28:13,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:13,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:13,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:13,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78627065] [2022-07-22 21:28:13,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78627065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:13,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:13,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:28:13,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185211546] [2022-07-22 21:28:13,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:13,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:28:13,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:13,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:28:13,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:28:13,973 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 353 [2022-07-22 21:28:13,974 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) [2022-07-22 21:28:13,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:13,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 353 [2022-07-22 21:28:13,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:14,439 INFO L129 PetriNetUnfolder]: 504/3564 cut-off events. [2022-07-22 21:28:14,439 INFO L130 PetriNetUnfolder]: For 5716/5935 co-relation queries the response was YES. [2022-07-22 21:28:14,459 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. [2022-07-22 21:28:14,472 INFO L132 encePairwiseOnDemand]: 345/353 looper letters, 94 selfloop transitions, 14 changer transitions 17/329 dead transitions. [2022-07-22 21:28:14,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 329 transitions, 1991 flow [2022-07-22 21:28:14,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:28:14,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:28:14,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2334 transitions. [2022-07-22 21:28:14,476 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8264872521246459 [2022-07-22 21:28:14,476 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2334 transitions. [2022-07-22 21:28:14,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2334 transitions. [2022-07-22 21:28:14,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:14,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2334 transitions. [2022-07-22 21:28:14,481 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) [2022-07-22 21:28:14,484 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) [2022-07-22 21:28:14,485 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) [2022-07-22 21:28:14,485 INFO L186 Difference]: Start difference. First operand has 249 places, 297 transitions, 1469 flow. Second operand 8 states and 2334 transitions. [2022-07-22 21:28:14,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 329 transitions, 1991 flow [2022-07-22 21:28:14,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 329 transitions, 1851 flow, removed 67 selfloop flow, removed 1 redundant places. [2022-07-22 21:28:14,505 INFO L242 Difference]: Finished difference. Result has 261 places, 302 transitions, 1430 flow [2022-07-22 21:28:14,506 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} [2022-07-22 21:28:14,507 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 39 predicate places. [2022-07-22 21:28:14,507 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 302 transitions, 1430 flow [2022-07-22 21:28:14,508 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) [2022-07-22 21:28:14,508 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:14,508 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] [2022-07-22 21:28:14,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:28:14,509 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)] === [2022-07-22 21:28:14,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:14,509 INFO L85 PathProgramCache]: Analyzing trace with hash -372303228, now seen corresponding path program 1 times [2022-07-22 21:28:14,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:14,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170931653] [2022-07-22 21:28:14,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:14,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:14,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:14,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:14,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170931653] [2022-07-22 21:28:14,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170931653] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:14,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:14,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:28:14,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421111029] [2022-07-22 21:28:14,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:14,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:28:14,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:14,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:28:14,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:28:14,582 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 353 [2022-07-22 21:28:14,584 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) [2022-07-22 21:28:14,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:14,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 353 [2022-07-22 21:28:14,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:15,312 INFO L129 PetriNetUnfolder]: 598/5512 cut-off events. [2022-07-22 21:28:15,313 INFO L130 PetriNetUnfolder]: For 6565/6833 co-relation queries the response was YES. [2022-07-22 21:28:15,340 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. [2022-07-22 21:28:15,354 INFO L132 encePairwiseOnDemand]: 346/353 looper letters, 28 selfloop transitions, 9 changer transitions 0/322 dead transitions. [2022-07-22 21:28:15,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 322 transitions, 1557 flow [2022-07-22 21:28:15,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:28:15,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:28:15,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2199 transitions. [2022-07-22 21:28:15,358 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8899231080534197 [2022-07-22 21:28:15,358 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2199 transitions. [2022-07-22 21:28:15,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2199 transitions. [2022-07-22 21:28:15,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:15,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2199 transitions. [2022-07-22 21:28:15,362 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) [2022-07-22 21:28:15,364 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) [2022-07-22 21:28:15,366 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) [2022-07-22 21:28:15,366 INFO L186 Difference]: Start difference. First operand has 261 places, 302 transitions, 1430 flow. Second operand 7 states and 2199 transitions. [2022-07-22 21:28:15,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 322 transitions, 1557 flow [2022-07-22 21:28:15,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 322 transitions, 1523 flow, removed 17 selfloop flow, removed 2 redundant places. [2022-07-22 21:28:15,396 INFO L242 Difference]: Finished difference. Result has 269 places, 310 transitions, 1464 flow [2022-07-22 21:28:15,397 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} [2022-07-22 21:28:15,397 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 47 predicate places. [2022-07-22 21:28:15,397 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 310 transitions, 1464 flow [2022-07-22 21:28:15,398 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) [2022-07-22 21:28:15,398 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:15,398 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] [2022-07-22 21:28:15,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:28:15,398 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)] === [2022-07-22 21:28:15,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:15,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1771912868, now seen corresponding path program 1 times [2022-07-22 21:28:15,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:15,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133080711] [2022-07-22 21:28:15,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:15,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:15,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:15,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133080711] [2022-07-22 21:28:15,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133080711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:15,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:15,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:28:15,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696328097] [2022-07-22 21:28:15,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:15,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:28:15,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:15,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:28:15,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:28:15,474 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 353 [2022-07-22 21:28:15,475 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) [2022-07-22 21:28:15,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:15,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 353 [2022-07-22 21:28:15,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:16,434 INFO L129 PetriNetUnfolder]: 706/6838 cut-off events. [2022-07-22 21:28:16,434 INFO L130 PetriNetUnfolder]: For 7440/7719 co-relation queries the response was YES. [2022-07-22 21:28:16,476 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. [2022-07-22 21:28:16,494 INFO L132 encePairwiseOnDemand]: 345/353 looper letters, 25 selfloop transitions, 8 changer transitions 4/319 dead transitions. [2022-07-22 21:28:16,495 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 319 transitions, 1515 flow [2022-07-22 21:28:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:28:16,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:28:16,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2188 transitions. [2022-07-22 21:28:16,499 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8854714690408741 [2022-07-22 21:28:16,499 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2188 transitions. [2022-07-22 21:28:16,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2188 transitions. [2022-07-22 21:28:16,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:16,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2188 transitions. [2022-07-22 21:28:16,503 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) [2022-07-22 21:28:16,505 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) [2022-07-22 21:28:16,506 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) [2022-07-22 21:28:16,506 INFO L186 Difference]: Start difference. First operand has 269 places, 310 transitions, 1464 flow. Second operand 7 states and 2188 transitions. [2022-07-22 21:28:16,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 319 transitions, 1515 flow [2022-07-22 21:28:16,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 319 transitions, 1515 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:28:16,599 INFO L242 Difference]: Finished difference. Result has 280 places, 307 transitions, 1424 flow [2022-07-22 21:28:16,599 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} [2022-07-22 21:28:16,600 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 58 predicate places. [2022-07-22 21:28:16,600 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 307 transitions, 1424 flow [2022-07-22 21:28:16,600 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) [2022-07-22 21:28:16,601 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:16,601 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] [2022-07-22 21:28:16,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:28:16,601 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)] === [2022-07-22 21:28:16,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:16,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1047579697, now seen corresponding path program 1 times [2022-07-22 21:28:16,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:16,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288192661] [2022-07-22 21:28:16,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:16,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:28:16,623 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:28:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:28:16,658 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:28:16,658 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:28:16,659 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION (13 of 14 remaining) [2022-07-22 21:28:16,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION (12 of 14 remaining) [2022-07-22 21:28:16,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (11 of 14 remaining) [2022-07-22 21:28:16,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (10 of 14 remaining) [2022-07-22 21:28:16,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (9 of 14 remaining) [2022-07-22 21:28:16,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 14 remaining) [2022-07-22 21:28:16,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr2ASSERT_VIOLATIONERROR_FUNCTION (7 of 14 remaining) [2022-07-22 21:28:16,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 14 remaining) [2022-07-22 21:28:16,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 14 remaining) [2022-07-22 21:28:16,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2022-07-22 21:28:16,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 14 remaining) [2022-07-22 21:28:16,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 14 remaining) [2022-07-22 21:28:16,662 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 14 remaining) [2022-07-22 21:28:16,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 14 remaining) [2022-07-22 21:28:16,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:28:16,663 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:16,667 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-22 21:28:16,668 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 21:28:16,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 09:28:16 BasicIcfg [2022-07-22 21:28:16,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 21:28:16,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 21:28:16,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 21:28:16,714 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 21:28:16,715 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:28:11" (3/4) ... [2022-07-22 21:28:16,716 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-22 21:28:16,758 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 21:28:16,758 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 21:28:16,759 INFO L158 Benchmark]: Toolchain (without parser) took 6845.03ms. Allocated memory was 98.6MB in the beginning and 897.6MB in the end (delta: 799.0MB). Free memory was 66.6MB in the beginning and 586.5MB in the end (delta: -519.9MB). Peak memory consumption was 277.3MB. Max. memory is 16.1GB. [2022-07-22 21:28:16,760 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory was 55.6MB in the beginning and 55.5MB in the end (delta: 41.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:28:16,761 INFO L158 Benchmark]: CACSL2BoogieTranslator took 717.72ms. Allocated memory was 98.6MB in the beginning and 123.7MB in the end (delta: 25.2MB). Free memory was 66.4MB in the beginning and 76.8MB in the end (delta: -10.5MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2022-07-22 21:28:16,761 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.75ms. Allocated memory is still 123.7MB. Free memory was 76.8MB in the beginning and 73.2MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-22 21:28:16,761 INFO L158 Benchmark]: Boogie Preprocessor took 50.15ms. Allocated memory is still 123.7MB. Free memory was 73.2MB in the beginning and 70.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:28:16,761 INFO L158 Benchmark]: RCFGBuilder took 578.22ms. Allocated memory is still 123.7MB. Free memory was 70.5MB in the beginning and 87.9MB in the end (delta: -17.4MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2022-07-22 21:28:16,761 INFO L158 Benchmark]: TraceAbstraction took 5400.75ms. Allocated memory was 123.7MB in the beginning and 897.6MB in the end (delta: 773.8MB). Free memory was 87.2MB in the beginning and 601.2MB in the end (delta: -513.9MB). Peak memory consumption was 259.9MB. Max. memory is 16.1GB. [2022-07-22 21:28:16,761 INFO L158 Benchmark]: Witness Printer took 44.19ms. Allocated memory is still 897.6MB. Free memory was 601.2MB in the beginning and 586.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-22 21:28:16,763 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory was 55.6MB in the beginning and 55.5MB in the end (delta: 41.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 717.72ms. Allocated memory was 98.6MB in the beginning and 123.7MB in the end (delta: 25.2MB). Free memory was 66.4MB in the beginning and 76.8MB in the end (delta: -10.5MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.75ms. Allocated memory is still 123.7MB. Free memory was 76.8MB in the beginning and 73.2MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.15ms. Allocated memory is still 123.7MB. Free memory was 73.2MB in the beginning and 70.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 578.22ms. Allocated memory is still 123.7MB. Free memory was 70.5MB in the beginning and 87.9MB in the end (delta: -17.4MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * TraceAbstraction took 5400.75ms. Allocated memory was 123.7MB in the beginning and 897.6MB in the end (delta: 773.8MB). Free memory was 87.2MB in the beginning and 601.2MB in the end (delta: -513.9MB). Peak memory consumption was 259.9MB. Max. memory is 16.1GB. * Witness Printer took 44.19ms. Allocated memory is still 897.6MB. Free memory was 601.2MB in the beginning and 586.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. 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)=0, \old(expression)=1, expression=0, expression=1, ldv_usb_state=1, mutex={5:0}, pdev=7, t1={3:0}, t2={4:0}] [L1693] 2 reach_error() VAL [\old(expression)=0, \old(expression)=1, expression=0, expression=1, 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: 5.2s, 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, 0.3s 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! [2022-07-22 21:28:16,795 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