./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-08_1a-drivers--usb--gadget--libcomposite.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-08_1a-drivers--usb--gadget--libcomposite.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 9cf309f0a6c825c7fb12404de1f7afda24a75842d16f1076eb678f0f1f17dedf --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 14:42:06,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 14:42:06,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 14:42:06,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 14:42:06,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 14:42:06,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 14:42:06,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 14:42:06,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 14:42:06,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 14:42:06,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 14:42:06,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 14:42:06,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 14:42:06,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 14:42:06,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 14:42:06,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 14:42:06,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 14:42:06,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 14:42:06,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 14:42:06,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 14:42:06,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 14:42:06,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 14:42:06,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 14:42:06,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 14:42:06,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 14:42:06,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 14:42:06,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 14:42:06,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 14:42:06,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 14:42:06,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 14:42:06,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 14:42:06,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 14:42:06,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 14:42:06,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 14:42:06,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 14:42:06,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 14:42:06,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 14:42:06,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 14:42:06,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 14:42:06,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 14:42:06,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 14:42:06,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 14:42:06,747 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 14:42:06,776 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 14:42:06,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 14:42:06,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 14:42:06,777 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 14:42:06,778 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 14:42:06,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 14:42:06,778 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 14:42:06,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 14:42:06,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 14:42:06,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 14:42:06,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 14:42:06,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 14:42:06,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 14:42:06,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 14:42:06,780 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 14:42:06,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 14:42:06,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 14:42:06,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 14:42:06,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 14:42:06,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:42:06,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 14:42:06,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 14:42:06,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 14:42:06,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 14:42:06,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 14:42:06,782 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 14:42:06,783 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 14:42:06,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 14:42:06,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 14:42:06,783 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cf309f0a6c825c7fb12404de1f7afda24a75842d16f1076eb678f0f1f17dedf [2021-11-07 14:42:07,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 14:42:07,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 14:42:07,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 14:42:07,050 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 14:42:07,050 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 14:42:07,051 INFO L432 ainManager$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-08_1a-drivers--usb--gadget--libcomposite.ko-entry_point.cil.out.i [2021-11-07 14:42:07,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d1758c78/d4396f5491db41849d3c0f9b40e8e227/FLAG2493582aa [2021-11-07 14:42:07,889 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 14:42:07,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--usb--gadget--libcomposite.ko-entry_point.cil.out.i [2021-11-07 14:42:07,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d1758c78/d4396f5491db41849d3c0f9b40e8e227/FLAG2493582aa [2021-11-07 14:42:08,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d1758c78/d4396f5491db41849d3c0f9b40e8e227 [2021-11-07 14:42:08,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 14:42:08,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 14:42:08,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 14:42:08,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 14:42:08,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 14:42:08,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:42:08" (1/1) ... [2021-11-07 14:42:08,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d630c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:42:08, skipping insertion in model container [2021-11-07 14:42:08,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:42:08" (1/1) ... [2021-11-07 14:42:08,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 14:42:08,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 14:42:10,564 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-08_1a-drivers--usb--gadget--libcomposite.ko-entry_point.cil.out.i[398836,398849] [2021-11-07 14:42:10,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:42:10,675 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 14:42:11,091 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-08_1a-drivers--usb--gadget--libcomposite.ko-entry_point.cil.out.i[398836,398849] [2021-11-07 14:42:11,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:42:11,230 INFO L208 MainTranslator]: Completed translation [2021-11-07 14:42:11,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:42:11 WrapperNode [2021-11-07 14:42:11,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 14:42:11,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 14:42:11,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 14:42:11,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 14:42:11,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:42:11" (1/1) ... [2021-11-07 14:42:11,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:42:11" (1/1) ... [2021-11-07 14:42:12,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 14:42:12,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 14:42:12,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 14:42:12,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 14:42:12,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:42:11" (1/1) ... [2021-11-07 14:42:12,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:42:11" (1/1) ... [2021-11-07 14:42:12,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:42:11" (1/1) ... [2021-11-07 14:42:12,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:42:11" (1/1) ... [2021-11-07 14:42:13,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:42:11" (1/1) ... [2021-11-07 14:42:13,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:42:11" (1/1) ... [2021-11-07 14:42:13,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:42:11" (1/1) ... [2021-11-07 14:42:14,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 14:42:14,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 14:42:14,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 14:42:14,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 14:42:14,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:42:11" (1/1) ... [2021-11-07 14:42:14,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:42:14,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:42:14,377 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 14:42:14,400 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 14:42:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_function [2021-11-07 14:42:14,415 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_function [2021-11-07 14:42:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2021-11-07 14:42:14,416 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2021-11-07 14:42:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure configfs_composite_bind [2021-11-07 14:42:14,416 INFO L138 BoogieDeclarations]: Found implementation of procedure configfs_composite_bind [2021-11-07 14:42:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure composite_dev_prepare [2021-11-07 14:42:14,417 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_dev_prepare [2021-11-07 14:42:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure composite_unbind [2021-11-07 14:42:14,417 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_unbind [2021-11-07 14:42:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure composite_bind [2021-11-07 14:42:14,417 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_bind [2021-11-07 14:42:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 14:42:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure bos_desc [2021-11-07 14:42:14,418 INFO L138 BoogieDeclarations]: Found implementation of procedure bos_desc [2021-11-07 14:42:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure composite_disconnect [2021-11-07 14:42:14,418 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_disconnect [2021-11-07 14:42:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure usb_remove_function [2021-11-07 14:42:14,418 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_remove_function [2021-11-07 14:42:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 14:42:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 14:42:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 14:42:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure composite_resume [2021-11-07 14:42:14,419 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_resume [2021-11-07 14:42:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure configfs_composite_unbind [2021-11-07 14:42:14,419 INFO L138 BoogieDeclarations]: Found implementation of procedure configfs_composite_unbind [2021-11-07 14:42:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 14:42:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_dequeue [2021-11-07 14:42:14,420 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_dequeue [2021-11-07 14:42:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 14:42:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 14:42:14,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 14:42:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure composite_dev_cleanup [2021-11-07 14:42:14,420 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_dev_cleanup [2021-11-07 14:42:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure composite_suspend [2021-11-07 14:42:14,421 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_suspend [2021-11-07 14:42:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure purge_configs_funcs [2021-11-07 14:42:14,421 INFO L138 BoogieDeclarations]: Found implementation of procedure purge_configs_funcs [2021-11-07 14:42:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 14:42:14,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 14:42:14,421 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_function_instance [2021-11-07 14:42:14,422 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_function_instance [2021-11-07 14:42:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 14:42:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 14:42:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure reset_config [2021-11-07 14:42:14,422 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_config [2021-11-07 14:42:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure usb_add_function [2021-11-07 14:42:14,423 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_add_function [2021-11-07 14:42:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure __composite_unbind [2021-11-07 14:42:14,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __composite_unbind [2021-11-07 14:42:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 14:42:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 14:42:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure config_usb_cfg_unlink [2021-11-07 14:42:14,423 INFO L138 BoogieDeclarations]: Found implementation of procedure config_usb_cfg_unlink [2021-11-07 14:42:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 14:42:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure composite_setup [2021-11-07 14:42:14,424 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_setup [2021-11-07 14:42:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure set_config [2021-11-07 14:42:14,424 INFO L138 BoogieDeclarations]: Found implementation of procedure set_config [2021-11-07 14:42:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_function [2021-11-07 14:42:14,425 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_function [2021-11-07 14:42:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 14:42:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-11-07 14:42:14,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-11-07 14:42:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-07 14:42:14,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-07 14:42:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure remove_config [2021-11-07 14:42:14,427 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_config [2021-11-07 14:42:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 14:42:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-07 14:42:14,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-07 14:43:03,795 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 14:43:03,796 INFO L299 CfgBuilder]: Removed 6704 assume(true) statements. [2021-11-07 14:43:03,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:43:03 BoogieIcfgContainer [2021-11-07 14:43:03,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 14:43:03,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 14:43:03,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 14:43:03,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 14:43:03,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:42:08" (1/3) ... [2021-11-07 14:43:03,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fc8bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:43:03, skipping insertion in model container [2021-11-07 14:43:03,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:42:11" (2/3) ... [2021-11-07 14:43:03,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fc8bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:43:03, skipping insertion in model container [2021-11-07 14:43:03,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:43:03" (3/3) ... [2021-11-07 14:43:03,823 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--usb--gadget--libcomposite.ko-entry_point.cil.out.i [2021-11-07 14:43:03,827 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 14:43:03,828 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 14:43:03,923 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 14:43:03,929 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 14:43:03,929 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 14:43:04,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 11653 states, 11517 states have (on average 1.4485543110184944) internal successors, (16683), 11537 states have internal predecessors, (16683), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 95 states have call predecessors, (101), 101 states have call successors, (101) [2021-11-07 14:43:04,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2021-11-07 14:43:04,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:43:04,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:04,134 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [usb_put_function_instanceErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~$Pointer$Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 14:43:04,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:43:04,139 INFO L85 PathProgramCache]: Analyzing trace with hash 825958261, now seen corresponding path program 1 times [2021-11-07 14:43:04,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:43:04,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340968527] [2021-11-07 14:43:04,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:43:04,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:43:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:43:05,235 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 14:43:05,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:43:05,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340968527] [2021-11-07 14:43:05,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340968527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:43:05,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:43:05,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:43:05,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856755648] [2021-11-07 14:43:05,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:43:05,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 14:43:05,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:43:05,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 14:43:05,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 14:43:05,301 INFO L87 Difference]: Start difference. First operand has 11653 states, 11517 states have (on average 1.4485543110184944) internal successors, (16683), 11537 states have internal predecessors, (16683), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 95 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 2 states, 2 states have (on average 204.0) internal successors, (408), 2 states have internal predecessors, (408), 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 14:43:05,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:43:05,652 INFO L93 Difference]: Finished difference Result 23302 states and 33866 transitions. [2021-11-07 14:43:05,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 14:43:05,654 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 204.0) internal successors, (408), 2 states have internal predecessors, (408), 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 408 [2021-11-07 14:43:05,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:43:05,731 INFO L225 Difference]: With dead ends: 23302 [2021-11-07 14:43:05,732 INFO L226 Difference]: Without dead ends: 11607 [2021-11-07 14:43:05,778 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 14:43:05,788 INFO L933 BasicCegarLoop]: 16554 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, 16554 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.44ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 14:43:05,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16554 Invalid, 0 Unknown, 0 Unchecked, 27.44ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 14:43:05,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11607 states. [2021-11-07 14:43:06,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11607 to 11607. [2021-11-07 14:43:06,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11607 states, 11472 states have (on average 1.4177126917712692) internal successors, (16264), 11491 states have internal predecessors, (16264), 101 states have call successors, (101), 28 states have call predecessors, (101), 28 states have return successors, (101), 95 states have call predecessors, (101), 101 states have call successors, (101) [2021-11-07 14:43:06,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11607 states to 11607 states and 16466 transitions. [2021-11-07 14:43:06,154 INFO L78 Accepts]: Start accepts. Automaton has 11607 states and 16466 transitions. Word has length 408 [2021-11-07 14:43:06,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:43:06,154 INFO L470 AbstractCegarLoop]: Abstraction has 11607 states and 16466 transitions. [2021-11-07 14:43:06,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 204.0) internal successors, (408), 2 states have internal predecessors, (408), 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 14:43:06,155 INFO L276 IsEmpty]: Start isEmpty. Operand 11607 states and 16466 transitions. [2021-11-07 14:43:06,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2021-11-07 14:43:06,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:43:06,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:06,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 14:43:06,169 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [usb_put_function_instanceErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~$Pointer$Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 14:43:06,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:43:06,170 INFO L85 PathProgramCache]: Analyzing trace with hash 410093809, now seen corresponding path program 1 times [2021-11-07 14:43:06,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:43:06,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470955682] [2021-11-07 14:43:06,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:43:06,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:43:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:43:07,401 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 14:43:07,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:43:07,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470955682] [2021-11-07 14:43:07,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470955682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:43:07,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:43:07,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:43:07,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895606497] [2021-11-07 14:43:07,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:43:07,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:43:07,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:43:07,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:43:07,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:43:07,407 INFO L87 Difference]: Start difference. First operand 11607 states and 16466 transitions. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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 14:43:09,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:43:10,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:43:10,230 INFO L93 Difference]: Finished difference Result 33836 states and 48354 transitions. [2021-11-07 14:43:10,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:43:10,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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 408 [2021-11-07 14:43:10,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:43:10,345 INFO L225 Difference]: With dead ends: 33836 [2021-11-07 14:43:10,345 INFO L226 Difference]: Without dead ends: 22607 [2021-11-07 14:43:10,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.15ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:43:10,392 INFO L933 BasicCegarLoop]: 16564 mSDtfsCounter, 15805 mSDsluCounter, 16450 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2170.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15805 SdHoareTripleChecker+Valid, 33014 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 59.62ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2311.22ms IncrementalHoareTripleChecker+Time [2021-11-07 14:43:10,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15805 Valid, 33014 Invalid, 15 Unknown, 0 Unchecked, 59.62ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2311.22ms Time] [2021-11-07 14:43:10,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22607 states. [2021-11-07 14:43:10,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22607 to 22597. [2021-11-07 14:43:10,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22597 states, 22333 states have (on average 1.4276183226615322) internal successors, (31883), 22366 states have internal predecessors, (31883), 202 states have call successors, (202), 56 states have call predecessors, (202), 56 states have return successors, (202), 190 states have call predecessors, (202), 202 states have call successors, (202) [2021-11-07 14:43:10,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22597 states to 22597 states and 32287 transitions. [2021-11-07 14:43:10,987 INFO L78 Accepts]: Start accepts. Automaton has 22597 states and 32287 transitions. Word has length 408 [2021-11-07 14:43:10,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:43:10,990 INFO L470 AbstractCegarLoop]: Abstraction has 22597 states and 32287 transitions. [2021-11-07 14:43:10,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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 14:43:10,991 INFO L276 IsEmpty]: Start isEmpty. Operand 22597 states and 32287 transitions. [2021-11-07 14:43:11,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2021-11-07 14:43:11,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:43:11,009 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:11,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 14:43:11,010 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [usb_put_function_instanceErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~$Pointer$Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 14:43:11,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:43:11,010 INFO L85 PathProgramCache]: Analyzing trace with hash 996174208, now seen corresponding path program 1 times [2021-11-07 14:43:11,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:43:11,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423071492] [2021-11-07 14:43:11,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:43:11,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:43:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:43:12,292 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 14:43:12,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:43:12,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423071492] [2021-11-07 14:43:12,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423071492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:43:12,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:43:12,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:43:12,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666664342] [2021-11-07 14:43:12,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:43:12,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:43:12,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:43:12,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:43:12,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:43:12,296 INFO L87 Difference]: Start difference. First operand 22597 states and 32287 transitions. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 2 states have internal predecessors, (412), 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 14:43:13,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:43:13,190 INFO L93 Difference]: Finished difference Result 67023 states and 96440 transitions. [2021-11-07 14:43:13,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:43:13,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 2 states have internal predecessors, (412), 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 412 [2021-11-07 14:43:13,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:43:13,333 INFO L225 Difference]: With dead ends: 67023 [2021-11-07 14:43:13,333 INFO L226 Difference]: Without dead ends: 44802 [2021-11-07 14:43:13,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:43:13,406 INFO L933 BasicCegarLoop]: 16585 mSDtfsCounter, 16040 mSDsluCounter, 16140 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16040 SdHoareTripleChecker+Valid, 32725 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.62ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.88ms IncrementalHoareTripleChecker+Time [2021-11-07 14:43:13,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16040 Valid, 32725 Invalid, 34 Unknown, 0 Unchecked, 46.62ms Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 45.88ms Time] [2021-11-07 14:43:13,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44802 states. [2021-11-07 14:43:14,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44802 to 44787. [2021-11-07 14:43:14,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44787 states, 44265 states have (on average 1.4305659098610641) internal successors, (63324), 44326 states have internal predecessors, (63324), 404 states have call successors, (404), 112 states have call predecessors, (404), 112 states have return successors, (606), 380 states have call predecessors, (606), 404 states have call successors, (606) [2021-11-07 14:43:14,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44787 states to 44787 states and 64334 transitions. [2021-11-07 14:43:14,538 INFO L78 Accepts]: Start accepts. Automaton has 44787 states and 64334 transitions. Word has length 412 [2021-11-07 14:43:14,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:43:14,539 INFO L470 AbstractCegarLoop]: Abstraction has 44787 states and 64334 transitions. [2021-11-07 14:43:14,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 2 states have internal predecessors, (412), 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 14:43:14,541 INFO L276 IsEmpty]: Start isEmpty. Operand 44787 states and 64334 transitions. [2021-11-07 14:43:14,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2021-11-07 14:43:14,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:43:14,565 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:14,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 14:43:14,566 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting usb_put_function_instanceErr0ASSERT_VIOLATIONERROR_FUNCTION === [usb_put_function_instanceErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~$Pointer$Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 14:43:14,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:43:14,567 INFO L85 PathProgramCache]: Analyzing trace with hash -961428972, now seen corresponding path program 1 times [2021-11-07 14:43:14,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:43:14,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977332358] [2021-11-07 14:43:14,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:43:14,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:43:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:43:15,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2021-11-07 14:43:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:43:15,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-07 14:43:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:43:15,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-07 14:43:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:43:15,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-07 14:43:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:43:15,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:43:15,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:43:15,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977332358] [2021-11-07 14:43:15,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977332358] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:43:15,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970410379] [2021-11-07 14:43:15,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:43:15,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:43:15,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:43:15,684 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 14:43:15,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 14:43:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:43:18,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 11048 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 14:43:18,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:43:19,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 14:43:19,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 14:43:19,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970410379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:43:19,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 14:43:19,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-07 14:43:19,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293220995] [2021-11-07 14:43:19,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:43:19,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:43:19,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:43:19,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:43:19,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:43:19,763 INFO L87 Difference]: Start difference. First operand 44787 states and 64334 transitions. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-07 14:43:21,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:43:21,118 INFO L93 Difference]: Finished difference Result 133409 states and 191918 transitions. [2021-11-07 14:43:21,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:43:21,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 448 [2021-11-07 14:43:21,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:43:21,652 INFO L225 Difference]: With dead ends: 133409 [2021-11-07 14:43:21,652 INFO L226 Difference]: Without dead ends: 89000 [2021-11-07 14:43:21,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.06ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:43:21,749 INFO L933 BasicCegarLoop]: 16550 mSDtfsCounter, 16355 mSDsluCounter, 16023 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 157.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16355 SdHoareTripleChecker+Valid, 32573 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.90ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 190.72ms IncrementalHoareTripleChecker+Time [2021-11-07 14:43:21,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16355 Valid, 32573 Invalid, 60 Unknown, 0 Unchecked, 38.90ms Time], IncrementalHoareTripleChecker [12 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 190.72ms Time] [2021-11-07 14:43:22,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89000 states. [2021-11-07 14:43:23,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89000 to 88641. [2021-11-07 14:43:23,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88641 states, 87647 states have (on average 1.4339794858922723) internal successors, (125684), 87764 states have internal predecessors, (125684), 764 states have call successors, (764), 224 states have call predecessors, (764), 224 states have return successors, (1146), 716 states have call predecessors, (1146), 764 states have call successors, (1146) [2021-11-07 14:43:24,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88641 states to 88641 states and 127594 transitions. [2021-11-07 14:43:24,179 INFO L78 Accepts]: Start accepts. Automaton has 88641 states and 127594 transitions. Word has length 448 [2021-11-07 14:43:24,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:43:24,180 INFO L470 AbstractCegarLoop]: Abstraction has 88641 states and 127594 transitions. [2021-11-07 14:43:24,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-07 14:43:24,180 INFO L276 IsEmpty]: Start isEmpty. Operand 88641 states and 127594 transitions. [2021-11-07 14:43:24,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-11-07 14:43:24,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:43:24,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:24,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 14:43:24,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:43:24,432 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ##fun~$Pointer$~TO~$Pointer$Err0ASSERT_VIOLATIONERROR_FUNCTION === [usb_put_function_instanceErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~$Pointer$Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 14:43:24,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:43:24,432 INFO L85 PathProgramCache]: Analyzing trace with hash -73138202, now seen corresponding path program 1 times [2021-11-07 14:43:24,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:43:24,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790132356] [2021-11-07 14:43:24,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:43:24,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:43:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:43:25,518 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 14:43:25,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:43:25,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790132356] [2021-11-07 14:43:25,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790132356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:43:25,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:43:25,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:43:25,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293025047] [2021-11-07 14:43:25,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:43:25,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:43:25,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:43:25,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:43:25,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:43:25,522 INFO L87 Difference]: Start difference. First operand 88641 states and 127594 transitions. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:43:27,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:43:27,850 INFO L93 Difference]: Finished difference Result 259399 states and 373856 transitions. [2021-11-07 14:43:27,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:43:27,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 426 [2021-11-07 14:43:27,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:43:28,459 INFO L225 Difference]: With dead ends: 259399 [2021-11-07 14:43:28,459 INFO L226 Difference]: Without dead ends: 171136 [2021-11-07 14:43:28,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.08ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:43:28,687 INFO L933 BasicCegarLoop]: 16605 mSDtfsCounter, 15415 mSDsluCounter, 16026 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 172.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15415 SdHoareTripleChecker+Valid, 32631 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 212.50ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 298.17ms IncrementalHoareTripleChecker+Time [2021-11-07 14:43:28,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15415 Valid, 32631 Invalid, 35 Unknown, 0 Unchecked, 212.50ms Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 298.17ms Time] [2021-11-07 14:43:28,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171136 states. [2021-11-07 14:43:31,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171136 to 170757. [2021-11-07 14:43:31,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170757 states, 168823 states have (on average 1.4369369102551193) internal successors, (242588), 169052 states have internal predecessors, (242588), 1480 states have call successors, (1480), 448 states have call predecessors, (1480), 448 states have return successors, (2220), 1384 states have call predecessors, (2220), 1480 states have call successors, (2220) [2021-11-07 14:43:32,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170757 states to 170757 states and 246288 transitions. [2021-11-07 14:43:32,606 INFO L78 Accepts]: Start accepts. Automaton has 170757 states and 246288 transitions. Word has length 426 [2021-11-07 14:43:32,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:43:32,607 INFO L470 AbstractCegarLoop]: Abstraction has 170757 states and 246288 transitions. [2021-11-07 14:43:32,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:43:32,608 INFO L276 IsEmpty]: Start isEmpty. Operand 170757 states and 246288 transitions. [2021-11-07 14:43:32,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-11-07 14:43:32,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:43:32,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:32,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 14:43:32,620 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [usb_put_function_instanceErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~$Pointer$Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 14:43:32,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:43:32,621 INFO L85 PathProgramCache]: Analyzing trace with hash -159784395, now seen corresponding path program 1 times [2021-11-07 14:43:32,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:43:32,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989818539] [2021-11-07 14:43:32,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:43:32,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:43:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:43:33,712 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 14:43:33,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:43:33,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989818539] [2021-11-07 14:43:33,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989818539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:43:33,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:43:33,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:43:33,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884349282] [2021-11-07 14:43:33,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:43:33,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:43:33,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:43:33,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:43:33,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:43:33,715 INFO L87 Difference]: Start difference. First operand 170757 states and 246288 transitions. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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 14:43:37,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:43:37,774 INFO L93 Difference]: Finished difference Result 509519 states and 735472 transitions. [2021-11-07 14:43:37,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:43:37,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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 428 [2021-11-07 14:43:37,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:43:38,705 INFO L225 Difference]: With dead ends: 509519 [2021-11-07 14:43:38,706 INFO L226 Difference]: Without dead ends: 339140 [2021-11-07 14:43:39,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.19ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:43:39,324 INFO L933 BasicCegarLoop]: 17626 mSDtfsCounter, 16143 mSDsluCounter, 16050 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 153.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16143 SdHoareTripleChecker+Valid, 33676 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.33ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 175.34ms IncrementalHoareTripleChecker+Time [2021-11-07 14:43:39,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16143 Valid, 33676 Invalid, 11 Unknown, 0 Unchecked, 29.33ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 175.34ms Time] [2021-11-07 14:43:39,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339140 states. [2021-11-07 14:43:44,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339140 to 338981. [2021-11-07 14:43:45,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338981 states, 335167 states have (on average 1.4385067742349336) internal successors, (482140), 335620 states have internal predecessors, (482140), 2912 states have call successors, (2912), 896 states have call predecessors, (2912), 896 states have return successors, (4368), 2720 states have call predecessors, (4368), 2912 states have call successors, (4368) [2021-11-07 14:43:47,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338981 states to 338981 states and 489420 transitions. [2021-11-07 14:43:47,122 INFO L78 Accepts]: Start accepts. Automaton has 338981 states and 489420 transitions. Word has length 428 [2021-11-07 14:43:47,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:43:47,123 INFO L470 AbstractCegarLoop]: Abstraction has 338981 states and 489420 transitions. [2021-11-07 14:43:47,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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 14:43:47,123 INFO L276 IsEmpty]: Start isEmpty. Operand 338981 states and 489420 transitions. [2021-11-07 14:43:47,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2021-11-07 14:43:47,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:43:47,140 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:47,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 14:43:47,140 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting usb_put_function_instanceErr0ASSERT_VIOLATIONERROR_FUNCTION === [usb_put_function_instanceErr0ASSERT_VIOLATIONERROR_FUNCTION, ##fun~$Pointer$~TO~$Pointer$Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 14:43:47,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:43:47,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1818994805, now seen corresponding path program 1 times [2021-11-07 14:43:47,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:43:47,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059859407] [2021-11-07 14:43:47,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:43:47,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:43:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:43:47,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2021-11-07 14:43:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:43:47,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:43:47,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:43:47,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059859407] [2021-11-07 14:43:47,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059859407] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:43:47,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621638] [2021-11-07 14:43:47,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:43:47,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:43:47,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:43:47,864 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 14:43:47,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 14:43:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:43:51,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 11216 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 14:43:51,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:43:51,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 14:43:51,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 14:43:51,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:43:51,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 14:43:51,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-07 14:43:51,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910831151] [2021-11-07 14:43:51,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:43:51,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:43:51,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:43:51,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:43:51,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:43:51,850 INFO L87 Difference]: Start difference. First operand 338981 states and 489420 transitions. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)