./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 173e3943 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-dev-173e394 [2021-11-06 16:15:27,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 16:15:27,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 16:15:27,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 16:15:27,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 16:15:27,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 16:15:27,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 16:15:27,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 16:15:27,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 16:15:27,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 16:15:27,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 16:15:27,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 16:15:27,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 16:15:27,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 16:15:27,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 16:15:27,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 16:15:27,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 16:15:27,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 16:15:27,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 16:15:27,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 16:15:27,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 16:15:28,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 16:15:28,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 16:15:28,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 16:15:28,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 16:15:28,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 16:15:28,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 16:15:28,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 16:15:28,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 16:15:28,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 16:15:28,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 16:15:28,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 16:15:28,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 16:15:28,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 16:15:28,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 16:15:28,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 16:15:28,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 16:15:28,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 16:15:28,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 16:15:28,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 16:15:28,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 16:15:28,029 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 16:15:28,062 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 16:15:28,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 16:15:28,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 16:15:28,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 16:15:28,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 16:15:28,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 16:15:28,065 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 16:15:28,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 16:15:28,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 16:15:28,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 16:15:28,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 16:15:28,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 16:15:28,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 16:15:28,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 16:15:28,067 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 16:15:28,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 16:15:28,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 16:15:28,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 16:15:28,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 16:15:28,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:15:28,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 16:15:28,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 16:15:28,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 16:15:28,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 16:15:28,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 16:15:28,069 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 16:15:28,069 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 16:15:28,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 16:15:28,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 16:15:28,070 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cf309f0a6c825c7fb12404de1f7afda24a75842d16f1076eb678f0f1f17dedf [2021-11-06 16:15:28,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 16:15:28,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 16:15:28,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 16:15:28,305 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 16:15:28,306 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 16:15:28,306 INFO L432 ainManager$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 [2021-11-06 16:15:28,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/327913c5c/78a3d990f654403293baae1f46392e3c/FLAG45ab5904e [2021-11-06 16:15:29,068 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 16:15:29,069 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 [2021-11-06 16:15:29,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/327913c5c/78a3d990f654403293baae1f46392e3c/FLAG45ab5904e [2021-11-06 16:15:29,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/327913c5c/78a3d990f654403293baae1f46392e3c [2021-11-06 16:15:29,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 16:15:29,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 16:15:29,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 16:15:29,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 16:15:29,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 16:15:29,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:15:29" (1/1) ... [2021-11-06 16:15:29,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47126331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:15:29, skipping insertion in model container [2021-11-06 16:15:29,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:15:29" (1/1) ... [2021-11-06 16:15:29,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 16:15:29,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 16:15:31,690 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] [2021-11-06 16:15:31,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:15:31,788 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 16:15:32,227 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] [2021-11-06 16:15:32,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:15:32,395 INFO L208 MainTranslator]: Completed translation [2021-11-06 16:15:32,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:15:32 WrapperNode [2021-11-06 16:15:32,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 16:15:32,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 16:15:32,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 16:15:32,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 16:15:32,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:15:32" (1/1) ... [2021-11-06 16:15:32,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:15:32" (1/1) ... [2021-11-06 16:15:33,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 16:15:33,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 16:15:33,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 16:15:33,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 16:15:33,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:15:32" (1/1) ... [2021-11-06 16:15:33,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:15:32" (1/1) ... [2021-11-06 16:15:34,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:15:32" (1/1) ... [2021-11-06 16:15:34,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:15:32" (1/1) ... [2021-11-06 16:15:34,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:15:32" (1/1) ... [2021-11-06 16:15:34,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:15:32" (1/1) ... [2021-11-06 16:15:34,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:15:32" (1/1) ... [2021-11-06 16:15:35,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 16:15:35,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 16:15:35,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 16:15:35,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 16:15:35,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:15:32" (1/1) ... [2021-11-06 16:15:35,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:15:35,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:15:35,333 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) [2021-11-06 16:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_function [2021-11-06 16:15:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_function [2021-11-06 16:15:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2021-11-06 16:15:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2021-11-06 16:15:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure configfs_composite_bind [2021-11-06 16:15:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure configfs_composite_bind [2021-11-06 16:15:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure composite_dev_prepare [2021-11-06 16:15:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_dev_prepare [2021-11-06 16:15:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure composite_unbind [2021-11-06 16:15:35,369 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_unbind [2021-11-06 16:15:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure composite_bind [2021-11-06 16:15:35,369 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_bind [2021-11-06 16:15:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 16:15:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure bos_desc [2021-11-06 16:15:35,370 INFO L138 BoogieDeclarations]: Found implementation of procedure bos_desc [2021-11-06 16:15:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure composite_disconnect [2021-11-06 16:15:35,370 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_disconnect [2021-11-06 16:15:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure usb_remove_function [2021-11-06 16:15:35,370 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_remove_function [2021-11-06 16:15:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 16:15:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 16:15:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 16:15:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure composite_resume [2021-11-06 16:15:35,371 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_resume [2021-11-06 16:15:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure configfs_composite_unbind [2021-11-06 16:15:35,371 INFO L138 BoogieDeclarations]: Found implementation of procedure configfs_composite_unbind [2021-11-06 16:15:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 16:15:35,372 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_dequeue [2021-11-06 16:15:35,372 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_dequeue [2021-11-06 16:15:35,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 16:15:35,372 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 16:15:35,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 16:15:35,372 INFO L130 BoogieDeclarations]: Found specification of procedure composite_dev_cleanup [2021-11-06 16:15:35,373 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_dev_cleanup [2021-11-06 16:15:35,373 INFO L130 BoogieDeclarations]: Found specification of procedure composite_suspend [2021-11-06 16:15:35,373 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_suspend [2021-11-06 16:15:35,373 INFO L130 BoogieDeclarations]: Found specification of procedure purge_configs_funcs [2021-11-06 16:15:35,373 INFO L138 BoogieDeclarations]: Found implementation of procedure purge_configs_funcs [2021-11-06 16:15:35,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 16:15:35,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 16:15:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_function_instance [2021-11-06 16:15:35,374 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_function_instance [2021-11-06 16:15:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 16:15:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 16:15:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure reset_config [2021-11-06 16:15:35,374 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_config [2021-11-06 16:15:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure usb_add_function [2021-11-06 16:15:35,375 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_add_function [2021-11-06 16:15:35,353 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 [2021-11-06 16:15:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure __composite_unbind [2021-11-06 16:15:35,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __composite_unbind [2021-11-06 16:15:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 16:15:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 16:15:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure config_usb_cfg_unlink [2021-11-06 16:15:35,388 INFO L138 BoogieDeclarations]: Found implementation of procedure config_usb_cfg_unlink [2021-11-06 16:15:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 16:15:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure composite_setup [2021-11-06 16:15:35,389 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_setup [2021-11-06 16:15:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure set_config [2021-11-06 16:15:35,389 INFO L138 BoogieDeclarations]: Found implementation of procedure set_config [2021-11-06 16:15:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_function [2021-11-06 16:15:35,390 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_function [2021-11-06 16:15:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 16:15:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-11-06 16:15:35,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-11-06 16:15:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 16:15:35,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 16:15:35,391 INFO L130 BoogieDeclarations]: Found specification of procedure remove_config [2021-11-06 16:15:35,391 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_config [2021-11-06 16:15:35,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 16:15:35,391 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-06 16:15:35,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-06 16:16:24,566 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 16:16:24,566 INFO L299 CfgBuilder]: Removed 6704 assume(true) statements. [2021-11-06 16:16:24,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:16:24 BoogieIcfgContainer [2021-11-06 16:16:24,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 16:16:24,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 16:16:24,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 16:16:24,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 16:16:24,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 04:15:29" (1/3) ... [2021-11-06 16:16:24,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53010c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:16:24, skipping insertion in model container [2021-11-06 16:16:24,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:15:32" (2/3) ... [2021-11-06 16:16:24,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53010c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:16:24, skipping insertion in model container [2021-11-06 16:16:24,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:16:24" (3/3) ... [2021-11-06 16:16:24,583 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--usb--gadget--libcomposite.ko-entry_point.cil.out.i [2021-11-06 16:16:24,588 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 16:16:24,588 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-06 16:16:24,667 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 16:16:24,675 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 [2021-11-06 16:16:24,675 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-06 16:16:24,811 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) [2021-11-06 16:16:24,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2021-11-06 16:16:24,852 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:16:24,853 INFO L513 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] [2021-11-06 16:16:24,854 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)] === [2021-11-06 16:16:24,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:16:24,859 INFO L85 PathProgramCache]: Analyzing trace with hash 825958261, now seen corresponding path program 1 times [2021-11-06 16:16:24,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:16:24,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842144504] [2021-11-06 16:16:24,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:16:24,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:16:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:16:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:16:25,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:16:25,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842144504] [2021-11-06 16:16:25,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842144504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:16:25,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:16:25,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:16:25,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275413794] [2021-11-06 16:16:25,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 16:16:25,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:16:25,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 16:16:25,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 16:16:25,975 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) [2021-11-06 16:16:26,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:16:26,296 INFO L93 Difference]: Finished difference Result 23302 states and 33866 transitions. [2021-11-06 16:16:26,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 16:16:26,298 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 [2021-11-06 16:16:26,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:16:26,358 INFO L225 Difference]: With dead ends: 23302 [2021-11-06 16:16:26,359 INFO L226 Difference]: Without dead ends: 11607 [2021-11-06 16:16:26,396 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 16:16:26,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11607 states. [2021-11-06 16:16:26,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11607 to 11607. [2021-11-06 16:16:26,730 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) [2021-11-06 16:16:26,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11607 states to 11607 states and 16466 transitions. [2021-11-06 16:16:26,781 INFO L78 Accepts]: Start accepts. Automaton has 11607 states and 16466 transitions. Word has length 408 [2021-11-06 16:16:26,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:16:26,784 INFO L470 AbstractCegarLoop]: Abstraction has 11607 states and 16466 transitions. [2021-11-06 16:16:26,784 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) [2021-11-06 16:16:26,785 INFO L276 IsEmpty]: Start isEmpty. Operand 11607 states and 16466 transitions. [2021-11-06 16:16:26,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2021-11-06 16:16:26,806 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:16:26,806 INFO L513 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] [2021-11-06 16:16:26,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 16:16:26,808 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)] === [2021-11-06 16:16:26,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:16:26,811 INFO L85 PathProgramCache]: Analyzing trace with hash 410093809, now seen corresponding path program 1 times [2021-11-06 16:16:26,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:16:26,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836760995] [2021-11-06 16:16:26,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:16:26,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:16:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:16:28,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:16:28,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:16:28,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836760995] [2021-11-06 16:16:28,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836760995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:16:28,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:16:28,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:16:28,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583356078] [2021-11-06 16:16:28,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:16:28,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:16:28,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:16:28,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:16:28,682 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) [2021-11-06 16:16:31,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:16:31,578 INFO L93 Difference]: Finished difference Result 33836 states and 48354 transitions. [2021-11-06 16:16:31,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:16:31,579 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 [2021-11-06 16:16:31,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:16:31,709 INFO L225 Difference]: With dead ends: 33836 [2021-11-06 16:16:31,709 INFO L226 Difference]: Without dead ends: 22607 [2021-11-06 16:16:31,761 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:16:31,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22607 states. [2021-11-06 16:16:32,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22607 to 22597. [2021-11-06 16:16:32,427 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) [2021-11-06 16:16:32,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22597 states to 22597 states and 32287 transitions. [2021-11-06 16:16:32,488 INFO L78 Accepts]: Start accepts. Automaton has 22597 states and 32287 transitions. Word has length 408 [2021-11-06 16:16:32,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:16:32,491 INFO L470 AbstractCegarLoop]: Abstraction has 22597 states and 32287 transitions. [2021-11-06 16:16:32,492 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) [2021-11-06 16:16:32,492 INFO L276 IsEmpty]: Start isEmpty. Operand 22597 states and 32287 transitions. [2021-11-06 16:16:32,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2021-11-06 16:16:32,509 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:16:32,509 INFO L513 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] [2021-11-06 16:16:32,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 16:16:32,510 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)] === [2021-11-06 16:16:32,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:16:32,510 INFO L85 PathProgramCache]: Analyzing trace with hash 996174208, now seen corresponding path program 1 times [2021-11-06 16:16:32,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:16:32,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984210962] [2021-11-06 16:16:32,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:16:32,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:16:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:16:34,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:16:34,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:16:34,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984210962] [2021-11-06 16:16:34,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984210962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:16:34,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:16:34,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:16:34,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070360879] [2021-11-06 16:16:34,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:16:34,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:16:34,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:16:34,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:16:34,069 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) [2021-11-06 16:16:34,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:16:34,954 INFO L93 Difference]: Finished difference Result 67023 states and 96440 transitions. [2021-11-06 16:16:34,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:16:34,955 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 [2021-11-06 16:16:34,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:16:35,120 INFO L225 Difference]: With dead ends: 67023 [2021-11-06 16:16:35,122 INFO L226 Difference]: Without dead ends: 44802 [2021-11-06 16:16:35,197 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:16:35,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44802 states. [2021-11-06 16:16:36,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44802 to 44787. [2021-11-06 16:16:36,334 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) [2021-11-06 16:16:36,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44787 states to 44787 states and 64334 transitions. [2021-11-06 16:16:36,461 INFO L78 Accepts]: Start accepts. Automaton has 44787 states and 64334 transitions. Word has length 412 [2021-11-06 16:16:36,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:16:36,462 INFO L470 AbstractCegarLoop]: Abstraction has 44787 states and 64334 transitions. [2021-11-06 16:16:36,462 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) [2021-11-06 16:16:36,463 INFO L276 IsEmpty]: Start isEmpty. Operand 44787 states and 64334 transitions. [2021-11-06 16:16:36,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2021-11-06 16:16:36,487 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:16:36,488 INFO L513 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] [2021-11-06 16:16:36,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 16:16:36,488 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)] === [2021-11-06 16:16:36,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:16:36,490 INFO L85 PathProgramCache]: Analyzing trace with hash -961428972, now seen corresponding path program 1 times [2021-11-06 16:16:36,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:16:36,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124256554] [2021-11-06 16:16:36,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:16:36,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:16:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:16:37,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2021-11-06 16:16:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:16:37,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-06 16:16:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:16:37,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-06 16:16:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:16:37,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-06 16:16:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:16:37,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:16:37,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:16:37,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124256554] [2021-11-06 16:16:37,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124256554] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:16:37,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787093220] [2021-11-06 16:16:37,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:16:37,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:16:37,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:16:37,483 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) [2021-11-06 16:16:37,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 16:16:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:16:40,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 11048 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 16:16:41,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:16:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:16:41,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787093220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:16:41,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 16:16:41,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 16:16:41,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529973013] [2021-11-06 16:16:41,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:16:41,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:16:41,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:16:41,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:16:41,964 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) [2021-11-06 16:16:43,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:16:43,545 INFO L93 Difference]: Finished difference Result 133409 states and 191918 transitions. [2021-11-06 16:16:43,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:16:43,546 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 [2021-11-06 16:16:43,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:16:43,840 INFO L225 Difference]: With dead ends: 133409 [2021-11-06 16:16:43,841 INFO L226 Difference]: Without dead ends: 89000 [2021-11-06 16:16:43,938 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:16:44,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89000 states. [2021-11-06 16:16:45,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89000 to 88641. [2021-11-06 16:16:45,574 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) [2021-11-06 16:16:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88641 states to 88641 states and 127594 transitions. [2021-11-06 16:16:45,838 INFO L78 Accepts]: Start accepts. Automaton has 88641 states and 127594 transitions. Word has length 448 [2021-11-06 16:16:45,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:16:45,839 INFO L470 AbstractCegarLoop]: Abstraction has 88641 states and 127594 transitions. [2021-11-06 16:16:45,840 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) [2021-11-06 16:16:45,840 INFO L276 IsEmpty]: Start isEmpty. Operand 88641 states and 127594 transitions. [2021-11-06 16:16:45,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-11-06 16:16:45,862 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:16:45,862 INFO L513 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] [2021-11-06 16:16:45,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 16:16:46,075 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 [2021-11-06 16:16:46,076 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)] === [2021-11-06 16:16:46,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:16:46,076 INFO L85 PathProgramCache]: Analyzing trace with hash -73138202, now seen corresponding path program 1 times [2021-11-06 16:16:46,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:16:46,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318858020] [2021-11-06 16:16:46,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:16:46,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:16:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:16:47,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:16:47,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:16:47,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318858020] [2021-11-06 16:16:47,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318858020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:16:47,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:16:47,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:16:47,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228469440] [2021-11-06 16:16:47,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:16:47,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:16:47,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:16:47,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:16:47,129 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) [2021-11-06 16:16:49,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:16:49,639 INFO L93 Difference]: Finished difference Result 259399 states and 373856 transitions. [2021-11-06 16:16:49,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:16:49,640 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 [2021-11-06 16:16:49,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:16:50,292 INFO L225 Difference]: With dead ends: 259399 [2021-11-06 16:16:50,293 INFO L226 Difference]: Without dead ends: 171136 [2021-11-06 16:16:50,800 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:16:50,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171136 states. [2021-11-06 16:16:53,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171136 to 170757. [2021-11-06 16:16:53,607 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) [2021-11-06 16:16:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170757 states to 170757 states and 246288 transitions. [2021-11-06 16:16:54,575 INFO L78 Accepts]: Start accepts. Automaton has 170757 states and 246288 transitions. Word has length 426 [2021-11-06 16:16:54,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:16:54,576 INFO L470 AbstractCegarLoop]: Abstraction has 170757 states and 246288 transitions. [2021-11-06 16:16:54,576 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) [2021-11-06 16:16:54,577 INFO L276 IsEmpty]: Start isEmpty. Operand 170757 states and 246288 transitions. [2021-11-06 16:16:54,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-11-06 16:16:54,591 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:16:54,592 INFO L513 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] [2021-11-06 16:16:54,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 16:16:54,592 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)] === [2021-11-06 16:16:54,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:16:54,593 INFO L85 PathProgramCache]: Analyzing trace with hash -159784395, now seen corresponding path program 1 times [2021-11-06 16:16:54,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:16:54,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37583786] [2021-11-06 16:16:54,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:16:54,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:16:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:16:55,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:16:55,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:16:55,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37583786] [2021-11-06 16:16:55,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37583786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:16:55,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:16:55,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:16:55,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828584093] [2021-11-06 16:16:55,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:16:55,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:16:55,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:16:55,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:16:55,351 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) [2021-11-06 16:16:59,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:16:59,912 INFO L93 Difference]: Finished difference Result 509519 states and 735472 transitions. [2021-11-06 16:16:59,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:16:59,913 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 [2021-11-06 16:16:59,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:17:01,040 INFO L225 Difference]: With dead ends: 509519 [2021-11-06 16:17:01,040 INFO L226 Difference]: Without dead ends: 339140 [2021-11-06 16:17:01,396 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:17:01,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339140 states. [2021-11-06 16:17:07,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339140 to 338981. [2021-11-06 16:17:08,111 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) [2021-11-06 16:17:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338981 states to 338981 states and 489420 transitions. [2021-11-06 16:17:09,226 INFO L78 Accepts]: Start accepts. Automaton has 338981 states and 489420 transitions. Word has length 428 [2021-11-06 16:17:09,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:17:09,227 INFO L470 AbstractCegarLoop]: Abstraction has 338981 states and 489420 transitions. [2021-11-06 16:17:09,228 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) [2021-11-06 16:17:09,228 INFO L276 IsEmpty]: Start isEmpty. Operand 338981 states and 489420 transitions. [2021-11-06 16:17:09,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2021-11-06 16:17:09,246 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:17:09,246 INFO L513 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] [2021-11-06 16:17:09,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 16:17:09,247 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)] === [2021-11-06 16:17:09,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:17:09,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1818994805, now seen corresponding path program 1 times [2021-11-06 16:17:09,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:17:09,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143688344] [2021-11-06 16:17:09,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:17:09,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:17:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat