./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--oxu210hp-hcd.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 bbef461d577533a33a47975bed502a034d4de7bb4c9545318a29cb7eaac175ad --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 15:28:31,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 15:28:31,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 15:28:31,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 15:28:31,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 15:28:31,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 15:28:31,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 15:28:31,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 15:28:31,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 15:28:31,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 15:28:31,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 15:28:31,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 15:28:31,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 15:28:31,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 15:28:31,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 15:28:31,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 15:28:31,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 15:28:31,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 15:28:31,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 15:28:31,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 15:28:31,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 15:28:31,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 15:28:31,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 15:28:31,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 15:28:31,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 15:28:31,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 15:28:31,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 15:28:31,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 15:28:31,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 15:28:31,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 15:28:31,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 15:28:31,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 15:28:31,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 15:28:31,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 15:28:31,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 15:28:31,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 15:28:31,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 15:28:31,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 15:28:31,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 15:28:31,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 15:28:31,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 15:28:31,759 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 15:28:31,772 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 15:28:31,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 15:28:31,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 15:28:31,776 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 15:28:31,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 15:28:31,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 15:28:31,777 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 15:28:31,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 15:28:31,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 15:28:31,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 15:28:31,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 15:28:31,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 15:28:31,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 15:28:31,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 15:28:31,779 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 15:28:31,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 15:28:31,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 15:28:31,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 15:28:31,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 15:28:31,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:28:31,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 15:28:31,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 15:28:31,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 15:28:31,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 15:28:31,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 15:28:31,781 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 15:28:31,781 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 15:28:31,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 15:28:31,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 15:28:31,781 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbef461d577533a33a47975bed502a034d4de7bb4c9545318a29cb7eaac175ad [2021-11-07 15:28:31,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 15:28:32,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 15:28:32,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 15:28:32,014 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 15:28:32,015 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 15:28:32,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i [2021-11-07 15:28:32,081 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/664d9a02f/0fcc23923d5c42dc84c515650193dcfc/FLAG38a4b19fd [2021-11-07 15:28:32,729 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 15:28:32,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i [2021-11-07 15:28:32,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/664d9a02f/0fcc23923d5c42dc84c515650193dcfc/FLAG38a4b19fd [2021-11-07 15:28:33,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/664d9a02f/0fcc23923d5c42dc84c515650193dcfc [2021-11-07 15:28:33,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 15:28:33,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 15:28:33,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 15:28:33,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 15:28:33,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 15:28:33,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:28:33" (1/1) ... [2021-11-07 15:28:33,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3728dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:33, skipping insertion in model container [2021-11-07 15:28:33,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:28:33" (1/1) ... [2021-11-07 15:28:33,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 15:28:33,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 15:28:34,806 WARN L228 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i[283009,283022] [2021-11-07 15:28:34,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:28:34,986 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 15:28:35,295 WARN L228 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i[283009,283022] [2021-11-07 15:28:35,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:28:35,371 INFO L208 MainTranslator]: Completed translation [2021-11-07 15:28:35,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:35 WrapperNode [2021-11-07 15:28:35,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 15:28:35,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 15:28:35,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 15:28:35,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 15:28:35,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:35" (1/1) ... [2021-11-07 15:28:35,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:35" (1/1) ... [2021-11-07 15:28:40,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 15:28:40,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 15:28:40,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 15:28:40,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 15:28:40,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:35" (1/1) ... [2021-11-07 15:28:40,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:35" (1/1) ... [2021-11-07 15:28:41,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:35" (1/1) ... [2021-11-07 15:28:41,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:35" (1/1) ... [2021-11-07 15:28:43,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:35" (1/1) ... [2021-11-07 15:28:44,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:35" (1/1) ... [2021-11-07 15:28:44,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:35" (1/1) ... [2021-11-07 15:28:45,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 15:28:45,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 15:28:45,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 15:28:45,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 15:28:45,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:35" (1/1) ... [2021-11-07 15:28:45,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:28:45,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:28:45,228 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) [2021-11-07 15:28:45,229 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 [2021-11-07 15:28:45,254 INFO L130 BoogieDeclarations]: Found specification of procedure end_unlink_async [2021-11-07 15:28:45,255 INFO L138 BoogieDeclarations]: Found implementation of procedure end_unlink_async [2021-11-07 15:28:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-07 15:28:45,255 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-07 15:28:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 15:28:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 15:28:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure scan_periodic [2021-11-07 15:28:45,255 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_periodic [2021-11-07 15:28:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure qh_put [2021-11-07 15:28:45,256 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_put [2021-11-07 15:28:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure scan_async [2021-11-07 15:28:45,256 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_async [2021-11-07 15:28:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 15:28:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 15:28:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-07 15:28:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 15:28:45,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 15:28:45,257 INFO L130 BoogieDeclarations]: Found specification of procedure intr_deschedule [2021-11-07 15:28:45,257 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_deschedule [2021-11-07 15:28:45,257 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_unaligned_access_size [2021-11-07 15:28:45,257 INFO L130 BoogieDeclarations]: Found specification of procedure qh_completions [2021-11-07 15:28:45,257 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_completions [2021-11-07 15:28:45,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 15:28:45,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 15:28:45,257 INFO L130 BoogieDeclarations]: Found specification of procedure oxu_stop [2021-11-07 15:28:45,257 INFO L138 BoogieDeclarations]: Found implementation of procedure oxu_stop [2021-11-07 15:28:45,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 15:28:45,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 15:28:45,258 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-07 15:28:45,258 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-07 15:28:45,258 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_work [2021-11-07 15:28:45,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_work [2021-11-07 15:28:45,258 INFO L130 BoogieDeclarations]: Found specification of procedure qh_unlink_periodic [2021-11-07 15:28:45,258 INFO L138 BoogieDeclarations]: Found implementation of procedure qh_unlink_periodic [2021-11-07 15:28:45,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 15:28:45,259 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_async [2021-11-07 15:28:45,259 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_async [2021-11-07 15:28:45,259 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_mem_cleanup [2021-11-07 15:28:45,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_mem_cleanup [2021-11-07 15:28:45,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 15:28:45,259 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 15:28:45,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 15:28:45,259 INFO L130 BoogieDeclarations]: Found specification of procedure ehci_urb_done [2021-11-07 15:28:45,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ehci_urb_done [2021-11-07 15:28:45,260 INFO L130 BoogieDeclarations]: Found specification of procedure start_unlink_async [2021-11-07 15:28:45,260 INFO L138 BoogieDeclarations]: Found implementation of procedure start_unlink_async [2021-11-07 15:28:45,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 15:28:45,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 15:28:45,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 15:33:29,509 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 15:33:29,509 INFO L299 CfgBuilder]: Removed 33124 assume(true) statements. [2021-11-07 15:33:29,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:33:29 BoogieIcfgContainer [2021-11-07 15:33:29,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 15:33:29,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 15:33:29,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 15:33:29,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 15:33:29,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:28:33" (1/3) ... [2021-11-07 15:33:29,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfe359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:33:29, skipping insertion in model container [2021-11-07 15:33:29,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:28:35" (2/3) ... [2021-11-07 15:33:29,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfe359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:33:29, skipping insertion in model container [2021-11-07 15:33:29,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:33:29" (3/3) ... [2021-11-07 15:33:29,542 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--host--oxu210hp-hcd.ko-entry_point.cil.out.i [2021-11-07 15:33:29,545 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 15:33:29,546 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-07 15:33:29,653 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 15:33:29,662 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 15:33:29,663 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 15:33:30,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 36756 states, 36570 states have (on average 1.4093792726278371) internal successors, (51541), 36614 states have internal predecessors, (51541), 166 states have call successors, (166), 16 states have call predecessors, (166), 16 states have return successors, (166), 166 states have call predecessors, (166), 166 states have call successors, (166) [2021-11-07 15:33:30,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 15:33:30,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:33:30,290 INFO L514 BasicCegarLoop]: 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] [2021-11-07 15:33:30,291 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 15:33:30,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:33:30,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1937582604, now seen corresponding path program 1 times [2021-11-07 15:33:30,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:33:30,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422985744] [2021-11-07 15:33:30,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:33:30,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:33:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:33:30,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:33:30,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:33:30,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422985744] [2021-11-07 15:33:30,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422985744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:33:30,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:33:30,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:33:30,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921342056] [2021-11-07 15:33:30,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:33:30,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 15:33:30,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:33:30,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 15:33:30,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:33:31,030 INFO L87 Difference]: Start difference. First operand has 36756 states, 36570 states have (on average 1.4093792726278371) internal successors, (51541), 36614 states have internal predecessors, (51541), 166 states have call successors, (166), 16 states have call predecessors, (166), 16 states have return successors, (166), 166 states have call predecessors, (166), 166 states have call successors, (166) Second operand has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 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) [2021-11-07 15:33:32,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:33:32,160 INFO L93 Difference]: Finished difference Result 73508 states and 103741 transitions. [2021-11-07 15:33:32,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 15:33:32,162 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-07 15:33:32,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:33:32,333 INFO L225 Difference]: With dead ends: 73508 [2021-11-07 15:33:32,334 INFO L226 Difference]: Without dead ends: 36573 [2021-11-07 15:33:32,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:33:32,410 INFO L933 BasicCegarLoop]: 51823 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51823 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 85.98ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 15:33:32,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 51823 Invalid, 0 Unknown, 0 Unchecked, 85.98ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 15:33:32,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36573 states. [2021-11-07 15:33:33,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36573 to 36573. [2021-11-07 15:33:33,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36573 states, 36388 states have (on average 1.4051610421017917) internal successors, (51131), 36431 states have internal predecessors, (51131), 166 states have call successors, (166), 16 states have call predecessors, (166), 16 states have return successors, (166), 166 states have call predecessors, (166), 166 states have call successors, (166) [2021-11-07 15:33:33,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36573 states to 36573 states and 51463 transitions. [2021-11-07 15:33:33,562 INFO L78 Accepts]: Start accepts. Automaton has 36573 states and 51463 transitions. Word has length 75 [2021-11-07 15:33:33,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:33:33,563 INFO L470 AbstractCegarLoop]: Abstraction has 36573 states and 51463 transitions. [2021-11-07 15:33:33,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 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) [2021-11-07 15:33:33,564 INFO L276 IsEmpty]: Start isEmpty. Operand 36573 states and 51463 transitions. [2021-11-07 15:33:33,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 15:33:33,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:33:33,570 INFO L514 BasicCegarLoop]: 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] [2021-11-07 15:33:33,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 15:33:33,571 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 15:33:33,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:33:33,573 INFO L85 PathProgramCache]: Analyzing trace with hash -664242964, now seen corresponding path program 1 times [2021-11-07 15:33:33,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:33:33,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041190145] [2021-11-07 15:33:33,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:33:33,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:33:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:33:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 15:33:33,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:33:33,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041190145] [2021-11-07 15:33:33,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041190145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:33:33,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:33:33,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:33:33,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670338217] [2021-11-07 15:33:33,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:33:33,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 15:33:33,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:33:33,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 15:33:33,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 15:33:33,911 INFO L87 Difference]: Start difference. First operand 36573 states and 51463 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-11-07 15:33:35,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []