./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--pegasus.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--pegasus.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 89396e897835206b8692491f294fd28f0d5472aa035bc065aff7ded0cb82953b --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 13:09:05,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 13:09:05,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 13:09:05,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 13:09:05,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 13:09:05,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 13:09:05,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 13:09:05,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 13:09:05,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 13:09:05,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 13:09:05,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 13:09:05,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 13:09:05,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 13:09:05,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 13:09:05,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 13:09:05,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 13:09:05,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 13:09:05,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 13:09:05,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 13:09:05,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 13:09:05,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 13:09:05,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 13:09:05,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 13:09:05,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 13:09:05,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 13:09:05,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 13:09:05,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 13:09:05,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 13:09:05,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 13:09:05,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 13:09:05,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 13:09:05,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 13:09:05,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 13:09:05,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 13:09:05,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 13:09:05,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 13:09:05,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 13:09:05,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 13:09:05,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 13:09:05,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 13:09:05,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 13:09:05,305 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-15 13:09:05,319 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 13:09:05,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 13:09:05,320 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 13:09:05,320 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 13:09:05,321 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 13:09:05,321 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 13:09:05,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 13:09:05,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 13:09:05,322 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 13:09:05,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 13:09:05,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 13:09:05,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 13:09:05,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 13:09:05,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 13:09:05,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 13:09:05,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 13:09:05,324 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 13:09:05,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 13:09:05,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 13:09:05,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 13:09:05,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 13:09:05,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:09:05,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 13:09:05,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 13:09:05,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 13:09:05,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 13:09:05,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 13:09:05,326 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 13:09:05,326 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 13:09:05,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 13:09:05,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 13:09:05,326 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89396e897835206b8692491f294fd28f0d5472aa035bc065aff7ded0cb82953b [2021-12-15 13:09:05,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 13:09:05,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 13:09:05,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 13:09:05,538 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 13:09:05,538 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 13:09:05,539 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--pegasus.ko-entry_point.cil.out.i [2021-12-15 13:09:05,580 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da0741c64/993d96dac1ad4e8892f4e0c9fec6011e/FLAG5716b684a [2021-12-15 13:09:06,190 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 13:09:06,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--pegasus.ko-entry_point.cil.out.i [2021-12-15 13:09:06,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da0741c64/993d96dac1ad4e8892f4e0c9fec6011e/FLAG5716b684a [2021-12-15 13:09:06,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da0741c64/993d96dac1ad4e8892f4e0c9fec6011e [2021-12-15 13:09:06,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 13:09:06,668 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 13:09:06,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 13:09:06,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 13:09:06,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 13:09:06,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:09:06" (1/1) ... [2021-12-15 13:09:06,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eeac769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:06, skipping insertion in model container [2021-12-15 13:09:06,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:09:06" (1/1) ... [2021-12-15 13:09:06,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 13:09:06,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:09:07,154 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5411] [2021-12-15 13:09:07,154 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5412-5413] [2021-12-15 13:09:07,373 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-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--pegasus.ko-entry_point.cil.out.i[162723,162736] [2021-12-15 13:09:08,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:09:08,088 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 13:09:08,215 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5411] [2021-12-15 13:09:08,217 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5412-5413] [2021-12-15 13:09:08,224 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-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--pegasus.ko-entry_point.cil.out.i[162723,162736] [2021-12-15 13:09:08,407 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:09:08,555 INFO L208 MainTranslator]: Completed translation [2021-12-15 13:09:08,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:08 WrapperNode [2021-12-15 13:09:08,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 13:09:08,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 13:09:08,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 13:09:08,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 13:09:08,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:08" (1/1) ... [2021-12-15 13:09:08,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:08" (1/1) ... [2021-12-15 13:09:08,768 INFO L137 Inliner]: procedures = 235, calls = 2844, calls flagged for inlining = 112, calls inlined = 104, statements flattened = 4797 [2021-12-15 13:09:08,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 13:09:08,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 13:09:08,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 13:09:08,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 13:09:08,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:08" (1/1) ... [2021-12-15 13:09:08,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:08" (1/1) ... [2021-12-15 13:09:08,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:08" (1/1) ... [2021-12-15 13:09:08,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:08" (1/1) ... [2021-12-15 13:09:08,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:08" (1/1) ... [2021-12-15 13:09:08,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:08" (1/1) ... [2021-12-15 13:09:08,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:08" (1/1) ... [2021-12-15 13:09:09,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 13:09:09,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 13:09:09,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 13:09:09,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 13:09:09,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:08" (1/1) ... [2021-12-15 13:09:09,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:09:09,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:09:09,066 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) [2021-12-15 13:09:09,070 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 [2021-12-15 13:09:09,091 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-12-15 13:09:09,092 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-12-15 13:09:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-15 13:09:09,092 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-15 13:09:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-15 13:09:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-15 13:09:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-15 13:09:09,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-15 13:09:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure write_mii_word [2021-12-15 13:09:09,093 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mii_word [2021-12-15 13:09:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2021-12-15 13:09:09,093 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2021-12-15 13:09:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-15 13:09:09,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-15 13:09:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2021-12-15 13:09:09,093 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2021-12-15 13:09:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure set_carrier [2021-12-15 13:09:09,094 INFO L138 BoogieDeclarations]: Found implementation of procedure set_carrier [2021-12-15 13:09:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-15 13:09:09,094 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-15 13:09:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-15 13:09:09,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-15 13:09:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-12-15 13:09:09,094 INFO L138 BoogieDeclarations]: Found implementation of procedure strsep [2021-12-15 13:09:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure read_mii_word [2021-12-15 13:09:09,095 INFO L138 BoogieDeclarations]: Found implementation of procedure read_mii_word [2021-12-15 13:09:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-15 13:09:09,095 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-15 13:09:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-15 13:09:09,095 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-15 13:09:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-15 13:09:09,095 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-15 13:09:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-15 13:09:09,095 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-15 13:09:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-12-15 13:09:09,096 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-12-15 13:09:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 13:09:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure read_eprom_word [2021-12-15 13:09:09,096 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eprom_word [2021-12-15 13:09:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-15 13:09:09,096 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-15 13:09:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-15 13:09:09,096 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-15 13:09:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 13:09:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-15 13:09:09,097 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-15 13:09:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-15 13:09:09,097 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-15 13:09:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-12-15 13:09:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 13:09:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-15 13:09:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-12-15 13:09:09,098 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-12-15 13:09:09,098 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_tx_timeout [2021-12-15 13:09:09,098 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_tx_timeout [2021-12-15 13:09:09,098 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-12-15 13:09:09,098 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-12-15 13:09:09,098 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-15 13:09:09,098 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-15 13:09:09,098 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_dec_workqueue [2021-12-15 13:09:09,099 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_dec_workqueue [2021-12-15 13:09:09,099 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-15 13:09:09,099 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-15 13:09:09,099 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-15 13:09:09,099 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-15 13:09:09,099 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urbs [2021-12-15 13:09:09,099 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urbs [2021-12-15 13:09:09,099 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_disconnect [2021-12-15 13:09:09,099 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_disconnect [2021-12-15 13:09:09,100 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-15 13:09:09,100 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-15 13:09:09,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-15 13:09:09,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-15 13:09:09,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-15 13:09:09,100 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2021-12-15 13:09:09,100 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2021-12-15 13:09:09,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-15 13:09:09,100 INFO L130 BoogieDeclarations]: Found specification of procedure __mii_op [2021-12-15 13:09:09,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __mii_op [2021-12-15 13:09:09,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 13:09:09,101 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-15 13:09:09,101 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-15 13:09:09,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-15 13:09:09,101 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-15 13:09:09,101 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_wol [2021-12-15 13:09:09,101 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_wol [2021-12-15 13:09:09,101 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb_ip_align [2021-12-15 13:09:09,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb_ip_align [2021-12-15 13:09:09,102 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-15 13:09:09,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-15 13:09:09,102 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-15 13:09:09,102 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-15 13:09:09,102 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-15 13:09:09,102 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-15 13:09:09,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-15 13:09:09,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-15 13:09:09,103 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-15 13:09:09,103 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-15 13:09:09,103 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-12-15 13:09:09,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-12-15 13:09:09,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 13:09:09,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-15 13:09:09,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-15 13:09:09,103 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_multicast [2021-12-15 13:09:09,104 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_multicast [2021-12-15 13:09:09,104 INFO L130 BoogieDeclarations]: Found specification of procedure set_register [2021-12-15 13:09:09,104 INFO L138 BoogieDeclarations]: Found implementation of procedure set_register [2021-12-15 13:09:09,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 13:09:09,104 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_ioctl [2021-12-15 13:09:09,104 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_ioctl [2021-12-15 13:09:09,104 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2021-12-15 13:09:09,104 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2021-12-15 13:09:09,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 13:09:09,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 13:09:09,105 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-12-15 13:09:09,105 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-12-15 13:09:09,105 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-15 13:09:09,105 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-15 13:09:09,105 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-15 13:09:09,105 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-15 13:09:09,105 INFO L130 BoogieDeclarations]: Found specification of procedure get_registers [2021-12-15 13:09:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure get_registers [2021-12-15 13:09:09,106 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_netdev_stats [2021-12-15 13:09:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_netdev_stats [2021-12-15 13:09:09,106 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-12-15 13:09:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-12-15 13:09:09,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 13:09:09,106 INFO L130 BoogieDeclarations]: Found specification of procedure set_registers [2021-12-15 13:09:09,106 INFO L138 BoogieDeclarations]: Found implementation of procedure set_registers [2021-12-15 13:09:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 13:09:09,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 13:09:09,518 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 13:09:09,520 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 13:09:09,638 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$ProcedureCfgBuilder.removeAuxiliaryGoto(CfgBuilder.java:962) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$ProcedureCfgBuilder.buildProcedureCfgFromImplementation(CfgBuilder.java:727) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:266) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 13:09:09,642 INFO L158 Benchmark]: Toolchain (without parser) took 2973.04ms. Allocated memory was 136.3MB in the beginning and 272.6MB in the end (delta: 136.3MB). Free memory was 111.9MB in the beginning and 151.7MB in the end (delta: -39.8MB). Peak memory consumption was 95.9MB. Max. memory is 16.1GB. [2021-12-15 13:09:09,642 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 96.5MB. Free memory is still 75.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 13:09:09,643 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1883.44ms. Allocated memory was 136.3MB in the beginning and 272.6MB in the end (delta: 136.3MB). Free memory was 111.2MB in the beginning and 189.3MB in the end (delta: -78.0MB). Peak memory consumption was 95.0MB. Max. memory is 16.1GB. [2021-12-15 13:09:09,643 INFO L158 Benchmark]: Boogie Procedure Inliner took 212.00ms. Allocated memory is still 272.6MB. Free memory was 189.3MB in the beginning and 158.9MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2021-12-15 13:09:09,644 INFO L158 Benchmark]: Boogie Preprocessor took 234.05ms. Allocated memory is still 272.6MB. Free memory was 158.9MB in the beginning and 188.4MB in the end (delta: -29.5MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. [2021-12-15 13:09:09,644 INFO L158 Benchmark]: RCFGBuilder took 636.18ms. Allocated memory is still 272.6MB. Free memory was 188.4MB in the beginning and 151.7MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2021-12-15 13:09:09,646 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 96.5MB. Free memory is still 75.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1883.44ms. Allocated memory was 136.3MB in the beginning and 272.6MB in the end (delta: 136.3MB). Free memory was 111.2MB in the beginning and 189.3MB in the end (delta: -78.0MB). Peak memory consumption was 95.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 212.00ms. Allocated memory is still 272.6MB. Free memory was 189.3MB in the beginning and 158.9MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 234.05ms. Allocated memory is still 272.6MB. Free memory was 158.9MB in the beginning and 188.4MB in the end (delta: -29.5MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. * RCFGBuilder took 636.18ms. Allocated memory is still 272.6MB. Free memory was 188.4MB in the beginning and 151.7MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 13:09:09,673 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--pegasus.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 64bit --witnessprinter.graph.data.programhash 89396e897835206b8692491f294fd28f0d5472aa035bc065aff7ded0cb82953b --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 13:09:11,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 13:09:11,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 13:09:11,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 13:09:11,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 13:09:11,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 13:09:11,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 13:09:11,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 13:09:11,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 13:09:11,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 13:09:11,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 13:09:11,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 13:09:11,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 13:09:11,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 13:09:11,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 13:09:11,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 13:09:11,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 13:09:11,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 13:09:11,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 13:09:11,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 13:09:11,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 13:09:11,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 13:09:11,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 13:09:11,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 13:09:11,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 13:09:11,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 13:09:11,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 13:09:11,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 13:09:11,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 13:09:11,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 13:09:11,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 13:09:11,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 13:09:11,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 13:09:11,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 13:09:11,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 13:09:11,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 13:09:11,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 13:09:11,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 13:09:11,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 13:09:11,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 13:09:11,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 13:09:11,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-15 13:09:11,634 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 13:09:11,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 13:09:11,635 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 13:09:11,636 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 13:09:11,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 13:09:11,637 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 13:09:11,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 13:09:11,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 13:09:11,638 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 13:09:11,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 13:09:11,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 13:09:11,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 13:09:11,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 13:09:11,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 13:09:11,639 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 13:09:11,639 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 13:09:11,639 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 13:09:11,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 13:09:11,640 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 13:09:11,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 13:09:11,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 13:09:11,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 13:09:11,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 13:09:11,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:09:11,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 13:09:11,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 13:09:11,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 13:09:11,641 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 13:09:11,641 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 13:09:11,641 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 13:09:11,642 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 13:09:11,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 13:09:11,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 13:09:11,642 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 13:09:11,642 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89396e897835206b8692491f294fd28f0d5472aa035bc065aff7ded0cb82953b [2021-12-15 13:09:11,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 13:09:11,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 13:09:11,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 13:09:11,893 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 13:09:11,894 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 13:09:11,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--pegasus.ko-entry_point.cil.out.i [2021-12-15 13:09:11,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c27dd375/6927b41f16964ddba24d982ffd8d179e/FLAGa95b18de4 [2021-12-15 13:09:12,553 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 13:09:12,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--pegasus.ko-entry_point.cil.out.i [2021-12-15 13:09:12,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c27dd375/6927b41f16964ddba24d982ffd8d179e/FLAGa95b18de4 [2021-12-15 13:09:12,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c27dd375/6927b41f16964ddba24d982ffd8d179e [2021-12-15 13:09:12,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 13:09:12,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 13:09:12,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 13:09:12,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 13:09:12,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 13:09:12,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:09:12" (1/1) ... [2021-12-15 13:09:12,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fae19da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:12, skipping insertion in model container [2021-12-15 13:09:12,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:09:12" (1/1) ... [2021-12-15 13:09:12,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 13:09:12,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:09:13,250 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5411] [2021-12-15 13:09:13,251 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5412-5413] [2021-12-15 13:09:13,442 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-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--pegasus.ko-entry_point.cil.out.i[162723,162736] [2021-12-15 13:09:14,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:09:14,226 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 13:09:14,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:09:14,336 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5411] [2021-12-15 13:09:14,336 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5412-5413] [2021-12-15 13:09:14,344 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-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--pegasus.ko-entry_point.cil.out.i[162723,162736] [2021-12-15 13:09:14,494 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:09:14,539 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 13:09:14,655 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5411] [2021-12-15 13:09:14,656 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5412-5413] [2021-12-15 13:09:14,660 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-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--pegasus.ko-entry_point.cil.out.i[162723,162736] [2021-12-15 13:09:14,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:09:14,946 INFO L208 MainTranslator]: Completed translation [2021-12-15 13:09:14,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:14 WrapperNode [2021-12-15 13:09:14,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 13:09:14,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 13:09:14,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 13:09:14,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 13:09:14,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:14" (1/1) ... [2021-12-15 13:09:15,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:14" (1/1) ... [2021-12-15 13:09:15,139 INFO L137 Inliner]: procedures = 250, calls = 2844, calls flagged for inlining = 112, calls inlined = 104, statements flattened = 4672 [2021-12-15 13:09:15,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 13:09:15,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 13:09:15,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 13:09:15,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 13:09:15,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:14" (1/1) ... [2021-12-15 13:09:15,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:14" (1/1) ... [2021-12-15 13:09:15,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:14" (1/1) ... [2021-12-15 13:09:15,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:14" (1/1) ... [2021-12-15 13:09:15,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:14" (1/1) ... [2021-12-15 13:09:15,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:14" (1/1) ... [2021-12-15 13:09:15,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:14" (1/1) ... [2021-12-15 13:09:15,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 13:09:15,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 13:09:15,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 13:09:15,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 13:09:15,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:09:14" (1/1) ... [2021-12-15 13:09:15,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:09:15,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:09:15,426 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) [2021-12-15 13:09:15,446 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 [2021-12-15 13:09:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-15 13:09:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-12-15 13:09:15,457 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-12-15 13:09:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-15 13:09:15,457 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-15 13:09:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-15 13:09:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 13:09:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-15 13:09:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-12-15 13:09:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-15 13:09:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-15 13:09:15,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-15 13:09:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure write_mii_word [2021-12-15 13:09:15,458 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mii_word [2021-12-15 13:09:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2021-12-15 13:09:15,459 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2021-12-15 13:09:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-15 13:09:15,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-15 13:09:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2021-12-15 13:09:15,459 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2021-12-15 13:09:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure set_carrier [2021-12-15 13:09:15,459 INFO L138 BoogieDeclarations]: Found implementation of procedure set_carrier [2021-12-15 13:09:15,459 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-15 13:09:15,459 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-15 13:09:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-15 13:09:15,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-15 13:09:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-12-15 13:09:15,460 INFO L138 BoogieDeclarations]: Found implementation of procedure strsep [2021-12-15 13:09:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure read_mii_word [2021-12-15 13:09:15,460 INFO L138 BoogieDeclarations]: Found implementation of procedure read_mii_word [2021-12-15 13:09:15,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-15 13:09:15,460 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-15 13:09:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-15 13:09:15,461 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-15 13:09:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-15 13:09:15,461 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-15 13:09:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-15 13:09:15,461 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-15 13:09:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-12-15 13:09:15,461 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-12-15 13:09:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 13:09:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure read_eprom_word [2021-12-15 13:09:15,462 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eprom_word [2021-12-15 13:09:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-15 13:09:15,463 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-15 13:09:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-15 13:09:15,463 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-15 13:09:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 13:09:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-15 13:09:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-15 13:09:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-15 13:09:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-15 13:09:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-12-15 13:09:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-15 13:09:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-15 13:09:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-12-15 13:09:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 13:09:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 13:09:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-15 13:09:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-12-15 13:09:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 13:09:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-15 13:09:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-12-15 13:09:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-12-15 13:09:15,466 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-12-15 13:09:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_tx_timeout [2021-12-15 13:09:15,466 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_tx_timeout [2021-12-15 13:09:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-12-15 13:09:15,467 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-12-15 13:09:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-15 13:09:15,467 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-15 13:09:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_dec_workqueue [2021-12-15 13:09:15,467 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_dec_workqueue [2021-12-15 13:09:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-15 13:09:15,467 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-15 13:09:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-15 13:09:15,468 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-15 13:09:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urbs [2021-12-15 13:09:15,468 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urbs [2021-12-15 13:09:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_disconnect [2021-12-15 13:09:15,468 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_disconnect [2021-12-15 13:09:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-15 13:09:15,469 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-15 13:09:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-15 13:09:15,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-15 13:09:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2021-12-15 13:09:15,470 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2021-12-15 13:09:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure __mii_op [2021-12-15 13:09:15,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __mii_op [2021-12-15 13:09:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-15 13:09:15,470 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-15 13:09:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-15 13:09:15,471 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-15 13:09:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_wol [2021-12-15 13:09:15,471 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_wol [2021-12-15 13:09:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb_ip_align [2021-12-15 13:09:15,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb_ip_align [2021-12-15 13:09:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-15 13:09:15,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-15 13:09:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-15 13:09:15,472 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-15 13:09:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-15 13:09:15,472 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-15 13:09:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-15 13:09:15,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-15 13:09:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-15 13:09:15,474 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-15 13:09:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-12-15 13:09:15,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-12-15 13:09:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-12-15 13:09:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-12-15 13:09:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-12-15 13:09:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-12-15 13:09:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-15 13:09:15,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-15 13:09:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_multicast [2021-12-15 13:09:15,480 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_multicast [2021-12-15 13:09:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure set_register [2021-12-15 13:09:15,480 INFO L138 BoogieDeclarations]: Found implementation of procedure set_register [2021-12-15 13:09:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 13:09:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_ioctl [2021-12-15 13:09:15,480 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_ioctl [2021-12-15 13:09:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2021-12-15 13:09:15,481 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2021-12-15 13:09:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 13:09:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 13:09:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-12-15 13:09:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-12-15 13:09:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-12-15 13:09:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-12-15 13:09:15,481 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-12-15 13:09:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-15 13:09:15,481 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-15 13:09:15,482 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-15 13:09:15,482 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-15 13:09:15,482 INFO L130 BoogieDeclarations]: Found specification of procedure get_registers [2021-12-15 13:09:15,482 INFO L138 BoogieDeclarations]: Found implementation of procedure get_registers [2021-12-15 13:09:15,482 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_netdev_stats [2021-12-15 13:09:15,482 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_netdev_stats [2021-12-15 13:09:15,482 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-12-15 13:09:15,482 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-12-15 13:09:15,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-12-15 13:09:15,482 INFO L130 BoogieDeclarations]: Found specification of procedure set_registers [2021-12-15 13:09:15,483 INFO L138 BoogieDeclarations]: Found implementation of procedure set_registers [2021-12-15 13:09:15,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 13:09:15,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 13:09:15,984 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 13:09:15,986 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 13:09:16,724 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$ProcedureCfgBuilder.removeAuxiliaryGoto(CfgBuilder.java:962) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$ProcedureCfgBuilder.buildProcedureCfgFromImplementation(CfgBuilder.java:727) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:266) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 13:09:16,728 INFO L158 Benchmark]: Toolchain (without parser) took 4040.48ms. Allocated memory was 77.6MB in the beginning and 415.2MB in the end (delta: 337.6MB). Free memory was 47.7MB in the beginning and 306.5MB in the end (delta: -258.8MB). Peak memory consumption was 129.8MB. Max. memory is 16.1GB. [2021-12-15 13:09:16,728 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 77.6MB. Free memory is still 58.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 13:09:16,728 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2259.30ms. Allocated memory was 77.6MB in the beginning and 207.6MB in the end (delta: 130.0MB). Free memory was 47.4MB in the beginning and 106.8MB in the end (delta: -59.3MB). Peak memory consumption was 106.2MB. Max. memory is 16.1GB. [2021-12-15 13:09:16,729 INFO L158 Benchmark]: Boogie Procedure Inliner took 191.64ms. Allocated memory is still 207.6MB. Free memory was 106.8MB in the beginning and 77.4MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2021-12-15 13:09:16,729 INFO L158 Benchmark]: Boogie Preprocessor took 265.52ms. Allocated memory is still 207.6MB. Free memory was 77.4MB in the beginning and 96.8MB in the end (delta: -19.4MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2021-12-15 13:09:16,729 INFO L158 Benchmark]: RCFGBuilder took 1319.90ms. Allocated memory was 207.6MB in the beginning and 415.2MB in the end (delta: 207.6MB). Free memory was 96.8MB in the beginning and 306.5MB in the end (delta: -209.7MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2021-12-15 13:09:16,731 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 77.6MB. Free memory is still 58.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2259.30ms. Allocated memory was 77.6MB in the beginning and 207.6MB in the end (delta: 130.0MB). Free memory was 47.4MB in the beginning and 106.8MB in the end (delta: -59.3MB). Peak memory consumption was 106.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 191.64ms. Allocated memory is still 207.6MB. Free memory was 106.8MB in the beginning and 77.4MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 265.52ms. Allocated memory is still 207.6MB. Free memory was 77.4MB in the beginning and 96.8MB in the end (delta: -19.4MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1319.90ms. Allocated memory was 207.6MB in the beginning and 415.2MB in the end (delta: 207.6MB). Free memory was 96.8MB in the beginning and 306.5MB in the end (delta: -209.7MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 13:09:16,764 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 Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable