./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 5f08f0f0 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-5f08f0f [2021-11-05 18:07:42,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 18:07:42,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 18:07:42,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 18:07:42,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 18:07:42,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 18:07:42,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 18:07:42,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 18:07:42,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 18:07:42,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 18:07:42,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 18:07:42,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 18:07:42,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 18:07:42,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 18:07:42,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 18:07:42,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 18:07:42,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 18:07:42,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 18:07:42,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 18:07:42,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 18:07:42,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 18:07:42,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 18:07:42,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 18:07:42,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 18:07:42,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 18:07:42,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 18:07:42,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 18:07:42,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 18:07:42,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 18:07:42,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 18:07:42,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 18:07:42,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 18:07:42,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 18:07:42,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 18:07:42,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 18:07:42,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 18:07:42,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 18:07:42,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 18:07:42,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 18:07:42,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 18:07:42,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 18:07:42,608 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 18:07:42,645 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 18:07:42,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 18:07:42,646 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 18:07:42,646 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 18:07:42,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 18:07:42,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 18:07:42,649 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 18:07:42,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 18:07:42,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 18:07:42,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 18:07:42,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 18:07:42,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 18:07:42,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 18:07:42,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 18:07:42,652 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 18:07:42,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 18:07:42,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 18:07:42,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 18:07:42,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 18:07:42,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 18:07:42,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 18:07:42,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 18:07:42,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 18:07:42,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 18:07:42,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 18:07:42,654 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 18:07:42,654 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 18:07:42,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 18:07:42,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 18:07:42,655 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cf309f0a6c825c7fb12404de1f7afda24a75842d16f1076eb678f0f1f17dedf [2021-11-05 18:07:43,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 18:07:43,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 18:07:43,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 18:07:43,040 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 18:07:43,041 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 18:07:43,043 INFO L432 ainManager$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 [2021-11-05 18:07:43,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/add5d52bd/e9447ad34e3841c8b8f1be6083a052f9/FLAG6fc328f80 [2021-11-05 18:07:43,933 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 18:07:43,933 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 [2021-11-05 18:07:43,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/add5d52bd/e9447ad34e3841c8b8f1be6083a052f9/FLAG6fc328f80 [2021-11-05 18:07:44,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/add5d52bd/e9447ad34e3841c8b8f1be6083a052f9 [2021-11-05 18:07:44,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 18:07:44,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 18:07:44,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 18:07:44,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 18:07:44,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 18:07:44,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 06:07:44" (1/1) ... [2021-11-05 18:07:44,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d667c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:07:44, skipping insertion in model container [2021-11-05 18:07:44,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 06:07:44" (1/1) ... [2021-11-05 18:07:44,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 18:07:44,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 18:07:47,784 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] [2021-11-05 18:07:47,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 18:07:47,936 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 18:07:48,548 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] [2021-11-05 18:07:48,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 18:07:48,741 INFO L208 MainTranslator]: Completed translation [2021-11-05 18:07:48,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:07:48 WrapperNode [2021-11-05 18:07:48,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 18:07:48,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 18:07:48,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 18:07:48,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 18:07:48,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:07:48" (1/1) ... [2021-11-05 18:07:48,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:07:48" (1/1) ... [2021-11-05 18:07:50,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 18:07:50,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 18:07:50,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 18:07:50,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 18:07:50,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:07:48" (1/1) ... [2021-11-05 18:07:50,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:07:48" (1/1) ... [2021-11-05 18:07:50,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:07:48" (1/1) ... [2021-11-05 18:07:50,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:07:48" (1/1) ... [2021-11-05 18:07:51,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:07:48" (1/1) ... [2021-11-05 18:07:51,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:07:48" (1/1) ... [2021-11-05 18:07:51,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:07:48" (1/1) ... [2021-11-05 18:07:51,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 18:07:51,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 18:07:51,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 18:07:51,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 18:07:51,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:07:48" (1/1) ... [2021-11-05 18:07:51,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 18:07:51,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:07:51,862 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) [2021-11-05 18:07:51,880 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 [2021-11-05 18:07:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_function [2021-11-05 18:07:51,900 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_function [2021-11-05 18:07:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2021-11-05 18:07:51,901 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2021-11-05 18:07:51,901 INFO L130 BoogieDeclarations]: Found specification of procedure configfs_composite_bind [2021-11-05 18:07:51,901 INFO L138 BoogieDeclarations]: Found implementation of procedure configfs_composite_bind [2021-11-05 18:07:51,901 INFO L130 BoogieDeclarations]: Found specification of procedure composite_dev_prepare [2021-11-05 18:07:51,902 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_dev_prepare [2021-11-05 18:07:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure composite_unbind [2021-11-05 18:07:51,902 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_unbind [2021-11-05 18:07:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure composite_bind [2021-11-05 18:07:51,902 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_bind [2021-11-05 18:07:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 18:07:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure bos_desc [2021-11-05 18:07:51,903 INFO L138 BoogieDeclarations]: Found implementation of procedure bos_desc [2021-11-05 18:07:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure composite_disconnect [2021-11-05 18:07:51,903 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_disconnect [2021-11-05 18:07:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure usb_remove_function [2021-11-05 18:07:51,903 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_remove_function [2021-11-05 18:07:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 18:07:51,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 18:07:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 18:07:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure composite_resume [2021-11-05 18:07:51,904 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_resume [2021-11-05 18:07:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure configfs_composite_unbind [2021-11-05 18:07:51,904 INFO L138 BoogieDeclarations]: Found implementation of procedure configfs_composite_unbind [2021-11-05 18:07:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 18:07:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_dequeue [2021-11-05 18:07:51,905 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_dequeue [2021-11-05 18:07:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 18:07:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 18:07:51,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 18:07:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure composite_dev_cleanup [2021-11-05 18:07:51,905 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_dev_cleanup [2021-11-05 18:07:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure composite_suspend [2021-11-05 18:07:51,906 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_suspend [2021-11-05 18:07:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure purge_configs_funcs [2021-11-05 18:07:51,906 INFO L138 BoogieDeclarations]: Found implementation of procedure purge_configs_funcs [2021-11-05 18:07:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 18:07:51,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 18:07:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_function_instance [2021-11-05 18:07:51,907 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_function_instance [2021-11-05 18:07:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 18:07:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 18:07:51,907 INFO L130 BoogieDeclarations]: Found specification of procedure reset_config [2021-11-05 18:07:51,908 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_config [2021-11-05 18:07:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure usb_add_function [2021-11-05 18:07:51,908 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_add_function [2021-11-05 18:07:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure __composite_unbind [2021-11-05 18:07:51,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __composite_unbind [2021-11-05 18:07:51,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 18:07:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 18:07:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure config_usb_cfg_unlink [2021-11-05 18:07:51,909 INFO L138 BoogieDeclarations]: Found implementation of procedure config_usb_cfg_unlink [2021-11-05 18:07:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 18:07:51,909 INFO L130 BoogieDeclarations]: Found specification of procedure composite_setup [2021-11-05 18:07:51,910 INFO L138 BoogieDeclarations]: Found implementation of procedure composite_setup [2021-11-05 18:07:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure set_config [2021-11-05 18:07:51,910 INFO L138 BoogieDeclarations]: Found implementation of procedure set_config [2021-11-05 18:07:51,910 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_function [2021-11-05 18:07:51,911 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_function [2021-11-05 18:07:51,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 18:07:51,912 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-11-05 18:07:51,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2021-11-05 18:07:51,912 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-05 18:07:51,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-05 18:07:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure remove_config [2021-11-05 18:07:51,913 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_config [2021-11-05 18:07:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 18:07:51,913 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-05 18:07:51,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-05 18:08:45,925 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 18:08:45,925 INFO L299 CfgBuilder]: Removed 6704 assume(true) statements. [2021-11-05 18:08:45,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 06:08:45 BoogieIcfgContainer [2021-11-05 18:08:45,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 18:08:45,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 18:08:45,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 18:08:45,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 18:08:45,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 06:07:44" (1/3) ... [2021-11-05 18:08:45,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bd88de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 06:08:45, skipping insertion in model container [2021-11-05 18:08:45,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 06:07:48" (2/3) ... [2021-11-05 18:08:45,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15bd88de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 06:08:45, skipping insertion in model container [2021-11-05 18:08:45,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 06:08:45" (3/3) ... [2021-11-05 18:08:45,946 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--usb--gadget--libcomposite.ko-entry_point.cil.out.i [2021-11-05 18:08:45,951 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 18:08:45,952 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-05 18:08:46,044 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 18:08:46,050 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 [2021-11-05 18:08:46,051 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-05 18:08:46,207 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) [2021-11-05 18:08:46,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2021-11-05 18:08:46,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:08:46,256 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] [2021-11-05 18:08:46,257 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)] === [2021-11-05 18:08:46,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:08:46,263 INFO L85 PathProgramCache]: Analyzing trace with hash 825958261, now seen corresponding path program 1 times [2021-11-05 18:08:46,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:08:46,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143342437] [2021-11-05 18:08:46,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:08:46,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:08:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:08:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:08:47,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:08:47,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143342437] [2021-11-05 18:08:47,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143342437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:08:47,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:08:47,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:08:47,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102563334] [2021-11-05 18:08:47,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:08:47,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 18:08:47,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:08:47,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 18:08:47,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 18:08:47,607 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) [2021-11-05 18:08:48,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:08:48,004 INFO L93 Difference]: Finished difference Result 23302 states and 33866 transitions. [2021-11-05 18:08:48,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 18:08:48,006 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 [2021-11-05 18:08:48,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:08:48,083 INFO L225 Difference]: With dead ends: 23302 [2021-11-05 18:08:48,084 INFO L226 Difference]: Without dead ends: 11607 [2021-11-05 18:08:48,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 18:08:48,152 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, 33.57ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 18:08:48,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16554 Invalid, 0 Unknown, 0 Unchecked, 33.57ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 18:08:48,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11607 states. [2021-11-05 18:08:48,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11607 to 11607. [2021-11-05 18:08:48,543 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) [2021-11-05 18:08:48,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11607 states to 11607 states and 16466 transitions. [2021-11-05 18:08:48,597 INFO L78 Accepts]: Start accepts. Automaton has 11607 states and 16466 transitions. Word has length 408 [2021-11-05 18:08:48,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:08:48,599 INFO L470 AbstractCegarLoop]: Abstraction has 11607 states and 16466 transitions. [2021-11-05 18:08:48,605 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) [2021-11-05 18:08:48,605 INFO L276 IsEmpty]: Start isEmpty. Operand 11607 states and 16466 transitions. [2021-11-05 18:08:48,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2021-11-05 18:08:48,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:08:48,620 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] [2021-11-05 18:08:48,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 18:08:48,621 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)] === [2021-11-05 18:08:48,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:08:48,623 INFO L85 PathProgramCache]: Analyzing trace with hash 410093809, now seen corresponding path program 1 times [2021-11-05 18:08:48,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:08:48,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257992499] [2021-11-05 18:08:48,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:08:48,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:08:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:08:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:08:49,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:08:49,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257992499] [2021-11-05 18:08:49,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257992499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:08:49,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:08:49,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:08:49,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90263128] [2021-11-05 18:08:49,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:08:49,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:08:49,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:08:49,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:08:49,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:08:49,824 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) [2021-11-05 18:08:52,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 18:08:52,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:08:52,778 INFO L93 Difference]: Finished difference Result 33836 states and 48354 transitions. [2021-11-05 18:08:52,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:08:52,779 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 [2021-11-05 18:08:52,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:08:53,103 INFO L225 Difference]: With dead ends: 33836 [2021-11-05 18:08:53,103 INFO L226 Difference]: Without dead ends: 22607 [2021-11-05 18:08:53,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.08ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:08:53,139 INFO L933 BasicCegarLoop]: 16564 mSDtfsCounter, 15805 mSDsluCounter, 16450 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2196.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15805 SdHoareTripleChecker+Valid, 33014 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 68.49ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2370.83ms IncrementalHoareTripleChecker+Time [2021-11-05 18:08:53,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15805 Valid, 33014 Invalid, 15 Unknown, 0 Unchecked, 68.49ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2370.83ms Time] [2021-11-05 18:08:53,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22607 states. [2021-11-05 18:08:53,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22607 to 22597. [2021-11-05 18:08:53,749 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) [2021-11-05 18:08:53,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22597 states to 22597 states and 32287 transitions. [2021-11-05 18:08:53,833 INFO L78 Accepts]: Start accepts. Automaton has 22597 states and 32287 transitions. Word has length 408 [2021-11-05 18:08:53,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:08:53,836 INFO L470 AbstractCegarLoop]: Abstraction has 22597 states and 32287 transitions. [2021-11-05 18:08:53,837 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) [2021-11-05 18:08:53,837 INFO L276 IsEmpty]: Start isEmpty. Operand 22597 states and 32287 transitions. [2021-11-05 18:08:53,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2021-11-05 18:08:53,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:08:53,858 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] [2021-11-05 18:08:53,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 18:08:53,858 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)] === [2021-11-05 18:08:53,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:08:53,859 INFO L85 PathProgramCache]: Analyzing trace with hash 996174208, now seen corresponding path program 1 times [2021-11-05 18:08:53,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:08:53,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304081280] [2021-11-05 18:08:53,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:08:53,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:08:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:08:55,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:08:55,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:08:55,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304081280] [2021-11-05 18:08:55,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304081280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:08:55,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:08:55,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 18:08:55,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47512357] [2021-11-05 18:08:55,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:08:55,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:08:55,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:08:55,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:08:55,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:08:55,534 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) [2021-11-05 18:08:56,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:08:56,448 INFO L93 Difference]: Finished difference Result 67023 states and 96440 transitions. [2021-11-05 18:08:56,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:08:56,449 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 [2021-11-05 18:08:56,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:08:56,635 INFO L225 Difference]: With dead ends: 67023 [2021-11-05 18:08:56,635 INFO L226 Difference]: Without dead ends: 44802 [2021-11-05 18:08:56,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.34ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:08:56,714 INFO L933 BasicCegarLoop]: 16585 mSDtfsCounter, 16040 mSDsluCounter, 16140 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16040 SdHoareTripleChecker+Valid, 32725 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.67ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.33ms IncrementalHoareTripleChecker+Time [2021-11-05 18:08:56,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16040 Valid, 32725 Invalid, 34 Unknown, 0 Unchecked, 57.67ms Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 62.33ms Time] [2021-11-05 18:08:56,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44802 states. [2021-11-05 18:08:57,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44802 to 44787. [2021-11-05 18:08:57,800 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) [2021-11-05 18:08:58,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44787 states to 44787 states and 64334 transitions. [2021-11-05 18:08:58,015 INFO L78 Accepts]: Start accepts. Automaton has 44787 states and 64334 transitions. Word has length 412 [2021-11-05 18:08:58,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:08:58,016 INFO L470 AbstractCegarLoop]: Abstraction has 44787 states and 64334 transitions. [2021-11-05 18:08:58,019 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) [2021-11-05 18:08:58,020 INFO L276 IsEmpty]: Start isEmpty. Operand 44787 states and 64334 transitions. [2021-11-05 18:08:58,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2021-11-05 18:08:58,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:08:58,047 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] [2021-11-05 18:08:58,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 18:08:58,047 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)] === [2021-11-05 18:08:58,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:08:58,049 INFO L85 PathProgramCache]: Analyzing trace with hash -961428972, now seen corresponding path program 1 times [2021-11-05 18:08:58,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:08:58,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882468873] [2021-11-05 18:08:58,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:08:58,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:08:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:08:59,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2021-11-05 18:08:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:08:59,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-05 18:08:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:08:59,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-05 18:08:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:08:59,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-05 18:08:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:08:59,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:08:59,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:08:59,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882468873] [2021-11-05 18:08:59,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882468873] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:08:59,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062771963] [2021-11-05 18:08:59,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:08:59,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:08:59,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:08:59,328 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) [2021-11-05 18:08:59,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 18:09:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:09:02,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 11048 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 18:09:02,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:09:03,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 18:09:03,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 18:09:03,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062771963] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:09:03,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 18:09:03,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 18:09:03,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928859014] [2021-11-05 18:09:03,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:09:03,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:09:03,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:09:03,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:09:03,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:09:03,742 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) [2021-11-05 18:09:05,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:09:05,526 INFO L93 Difference]: Finished difference Result 133409 states and 191918 transitions. [2021-11-05 18:09:05,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:09:05,527 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 [2021-11-05 18:09:05,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:09:05,898 INFO L225 Difference]: With dead ends: 133409 [2021-11-05 18:09:05,898 INFO L226 Difference]: Without dead ends: 89000 [2021-11-05 18:09:06,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.20ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:09:06,018 INFO L933 BasicCegarLoop]: 16550 mSDtfsCounter, 16355 mSDsluCounter, 16023 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 233.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16355 SdHoareTripleChecker+Valid, 32573 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.38ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 266.77ms IncrementalHoareTripleChecker+Time [2021-11-05 18:09:06,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16355 Valid, 32573 Invalid, 60 Unknown, 0 Unchecked, 45.38ms Time], IncrementalHoareTripleChecker [12 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 266.77ms Time] [2021-11-05 18:09:06,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89000 states. [2021-11-05 18:09:07,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89000 to 88641. [2021-11-05 18:09:08,001 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) [2021-11-05 18:09:08,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88641 states to 88641 states and 127594 transitions. [2021-11-05 18:09:08,585 INFO L78 Accepts]: Start accepts. Automaton has 88641 states and 127594 transitions. Word has length 448 [2021-11-05 18:09:08,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:09:08,586 INFO L470 AbstractCegarLoop]: Abstraction has 88641 states and 127594 transitions. [2021-11-05 18:09:08,587 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) [2021-11-05 18:09:08,587 INFO L276 IsEmpty]: Start isEmpty. Operand 88641 states and 127594 transitions. [2021-11-05 18:09:08,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-11-05 18:09:08,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:09:08,607 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] [2021-11-05 18:09:08,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 18:09:08,835 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 [2021-11-05 18:09:08,836 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)] === [2021-11-05 18:09:08,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:09:08,836 INFO L85 PathProgramCache]: Analyzing trace with hash -73138202, now seen corresponding path program 1 times [2021-11-05 18:09:08,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:09:08,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028394987] [2021-11-05 18:09:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:09:08,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:09:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:09:09,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:09:09,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:09:09,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028394987] [2021-11-05 18:09:09,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028394987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:09:09,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:09:09,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:09:09,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863783076] [2021-11-05 18:09:09,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:09:09,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:09:09,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:09:09,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:09:09,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:09:09,721 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) [2021-11-05 18:09:12,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:09:12,727 INFO L93 Difference]: Finished difference Result 259399 states and 373856 transitions. [2021-11-05 18:09:12,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:09:12,728 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 [2021-11-05 18:09:12,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:09:13,450 INFO L225 Difference]: With dead ends: 259399 [2021-11-05 18:09:13,450 INFO L226 Difference]: Without dead ends: 171136 [2021-11-05 18:09:13,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:09:13,660 INFO L933 BasicCegarLoop]: 16605 mSDtfsCounter, 15415 mSDsluCounter, 16026 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 207.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15415 SdHoareTripleChecker+Valid, 32631 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.01ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 240.57ms IncrementalHoareTripleChecker+Time [2021-11-05 18:09:13,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15415 Valid, 32631 Invalid, 35 Unknown, 0 Unchecked, 43.01ms Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 240.57ms Time] [2021-11-05 18:09:13,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171136 states. [2021-11-05 18:09:16,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171136 to 170757. [2021-11-05 18:09:16,990 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) [2021-11-05 18:09:17,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170757 states to 170757 states and 246288 transitions. [2021-11-05 18:09:17,573 INFO L78 Accepts]: Start accepts. Automaton has 170757 states and 246288 transitions. Word has length 426 [2021-11-05 18:09:17,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:09:17,578 INFO L470 AbstractCegarLoop]: Abstraction has 170757 states and 246288 transitions. [2021-11-05 18:09:17,578 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) [2021-11-05 18:09:17,579 INFO L276 IsEmpty]: Start isEmpty. Operand 170757 states and 246288 transitions. [2021-11-05 18:09:17,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-11-05 18:09:17,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:09:17,601 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] [2021-11-05 18:09:17,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 18:09:17,602 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)] === [2021-11-05 18:09:17,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:09:17,602 INFO L85 PathProgramCache]: Analyzing trace with hash -159784395, now seen corresponding path program 1 times [2021-11-05 18:09:17,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:09:17,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24850936] [2021-11-05 18:09:17,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:09:17,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:09:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:09:18,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:09:18,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:09:18,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24850936] [2021-11-05 18:09:18,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24850936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:09:18,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 18:09:18,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 18:09:18,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283415828] [2021-11-05 18:09:18,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:09:18,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:09:18,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:09:18,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:09:18,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:09:18,919 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) [2021-11-05 18:09:23,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 18:09:23,960 INFO L93 Difference]: Finished difference Result 509519 states and 735472 transitions. [2021-11-05 18:09:23,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 18:09:23,961 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 [2021-11-05 18:09:23,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 18:09:25,281 INFO L225 Difference]: With dead ends: 509519 [2021-11-05 18:09:25,281 INFO L226 Difference]: Without dead ends: 339140 [2021-11-05 18:09:25,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 18:09:25,983 INFO L933 BasicCegarLoop]: 17626 mSDtfsCounter, 16143 mSDsluCounter, 16050 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 167.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16143 SdHoareTripleChecker+Valid, 33676 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 39.85ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 197.36ms IncrementalHoareTripleChecker+Time [2021-11-05 18:09:25,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16143 Valid, 33676 Invalid, 11 Unknown, 0 Unchecked, 39.85ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 197.36ms Time] [2021-11-05 18:09:26,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339140 states. [2021-11-05 18:09:31,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339140 to 338981. [2021-11-05 18:09:31,749 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) [2021-11-05 18:09:33,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338981 states to 338981 states and 489420 transitions. [2021-11-05 18:09:33,278 INFO L78 Accepts]: Start accepts. Automaton has 338981 states and 489420 transitions. Word has length 428 [2021-11-05 18:09:33,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 18:09:33,279 INFO L470 AbstractCegarLoop]: Abstraction has 338981 states and 489420 transitions. [2021-11-05 18:09:33,279 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) [2021-11-05 18:09:33,280 INFO L276 IsEmpty]: Start isEmpty. Operand 338981 states and 489420 transitions. [2021-11-05 18:09:33,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2021-11-05 18:09:33,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 18:09:33,299 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] [2021-11-05 18:09:33,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 18:09:33,300 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)] === [2021-11-05 18:09:33,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 18:09:33,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1818994805, now seen corresponding path program 1 times [2021-11-05 18:09:33,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 18:09:33,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117140764] [2021-11-05 18:09:33,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:09:33,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 18:09:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:09:34,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2021-11-05 18:09:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:09:34,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 18:09:34,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 18:09:34,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117140764] [2021-11-05 18:09:34,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117140764] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 18:09:34,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533794569] [2021-11-05 18:09:34,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 18:09:34,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 18:09:34,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 18:09:34,182 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) [2021-11-05 18:09:34,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 18:09:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 18:09:37,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 11216 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 18:09:37,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 18:09:38,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 18:09:38,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 18:09:38,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533794569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 18:09:38,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 18:09:38,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 18:09:38,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721025057] [2021-11-05 18:09:38,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 18:09:38,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 18:09:38,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 18:09:38,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 18:09:38,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 18:09:38,373 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)