./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.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 d88455bf5089be24833f69dfcbd91003e7e136bcd5efcd63ae18e59d7f59e87d --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:45:56,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:45:56,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:45:56,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:45:56,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:45:56,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:45:56,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:45:56,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:45:56,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:45:56,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:45:56,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:45:56,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:45:56,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:45:56,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:45:56,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:45:56,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:45:56,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:45:56,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:45:56,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:45:56,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:45:56,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:45:56,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:45:56,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:45:56,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:45:56,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:45:56,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:45:56,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:45:56,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:45:56,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:45:56,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:45:56,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:45:56,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:45:56,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:45:56,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:45:56,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:45:56,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:45:56,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:45:56,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:45:56,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:45:56,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:45:56,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:45:56,802 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:45:56,831 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:45:56,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:45:56,832 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:45:56,832 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:45:56,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:45:56,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:45:56,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:45:56,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:45:56,833 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:45:56,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:45:56,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:45:56,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:45:56,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:45:56,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:45:56,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:45:56,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:45:56,835 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:45:56,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:45:56,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:45:56,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:45:56,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:45:56,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:45:56,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:45:56,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:45:56,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:45:56,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:45:56,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:45:56,837 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:45:56,837 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:45:56,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:45:56,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:45:56,837 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d88455bf5089be24833f69dfcbd91003e7e136bcd5efcd63ae18e59d7f59e87d [2021-12-14 17:45:57,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:45:57,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:45:57,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:45:57,056 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:45:57,057 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:45:57,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2021-12-14 17:45:57,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/951457e9b/2ed7833db51f4be6b37ccf9f374f550e/FLAG8cee8dc16 [2021-12-14 17:45:57,709 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:45:57,710 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2021-12-14 17:45:57,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/951457e9b/2ed7833db51f4be6b37ccf9f374f550e/FLAG8cee8dc16 [2021-12-14 17:45:57,833 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/951457e9b/2ed7833db51f4be6b37ccf9f374f550e [2021-12-14 17:45:57,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:45:57,837 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:45:57,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:45:57,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:45:57,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:45:57,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:45:57" (1/1) ... [2021-12-14 17:45:57,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d1192be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:57, skipping insertion in model container [2021-12-14 17:45:57,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:45:57" (1/1) ... [2021-12-14 17:45:57,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:45:57,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:45:58,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i[205251,205264] [2021-12-14 17:45:59,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:45:59,459 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:45:59,548 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i[205251,205264] [2021-12-14 17:45:59,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:45:59,737 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:45:59,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:59 WrapperNode [2021-12-14 17:45:59,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:45:59,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:45:59,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:45:59,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:45:59,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:59" (1/1) ... [2021-12-14 17:45:59,815 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:59" (1/1) ... [2021-12-14 17:45:59,968 INFO L137 Inliner]: procedures = 239, calls = 2983, calls flagged for inlining = 111, calls inlined = 96, statements flattened = 5266 [2021-12-14 17:45:59,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:45:59,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:45:59,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:45:59,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:45:59,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:59" (1/1) ... [2021-12-14 17:45:59,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:59" (1/1) ... [2021-12-14 17:46:00,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:59" (1/1) ... [2021-12-14 17:46:00,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:59" (1/1) ... [2021-12-14 17:46:00,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:59" (1/1) ... [2021-12-14 17:46:00,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:59" (1/1) ... [2021-12-14 17:46:00,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:59" (1/1) ... [2021-12-14 17:46:00,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:46:00,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:46:00,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:46:00,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:46:00,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:59" (1/1) ... [2021-12-14 17:46:00,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:46:00,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:46:00,251 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:46:00,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:46:00,285 INFO L130 BoogieDeclarations]: Found specification of procedure at76_hw_scan [2021-12-14 17:46:00,285 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_hw_scan [2021-12-14 17:46:00,285 INFO L130 BoogieDeclarations]: Found specification of procedure at76_dfu_get_status [2021-12-14 17:46:00,286 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_dfu_get_status [2021-12-14 17:46:00,286 INFO L130 BoogieDeclarations]: Found specification of procedure at76_join [2021-12-14 17:46:00,286 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_join [2021-12-14 17:46:00,286 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-14 17:46:00,286 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-14 17:46:00,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:46:00,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:46:00,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 17:46:00,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 17:46:00,287 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2021-12-14 17:46:00,287 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2021-12-14 17:46:00,287 INFO L130 BoogieDeclarations]: Found specification of procedure at76_submit_rx_urb [2021-12-14 17:46:00,287 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_submit_rx_urb [2021-12-14 17:46:00,287 INFO L130 BoogieDeclarations]: Found specification of procedure at76_add_interface [2021-12-14 17:46:00,287 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_add_interface [2021-12-14 17:46:00,287 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_timeout [2021-12-14 17:46:00,288 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_timeout [2021-12-14 17:46:00,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:46:00,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:46:00,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-14 17:46:00,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-14 17:46:00,288 INFO L130 BoogieDeclarations]: Found specification of procedure at76_bss_info_changed [2021-12-14 17:46:00,288 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_bss_info_changed [2021-12-14 17:46:00,288 INFO L130 BoogieDeclarations]: Found specification of procedure at76_wait_completion [2021-12-14 17:46:00,289 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_wait_completion [2021-12-14 17:46:00,289 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:46:00,289 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:46:00,289 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-14 17:46:00,289 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-14 17:46:00,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:46:00,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:46:00,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 17:46:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 17:46:00,290 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:46:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:46:00,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:46:00,290 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-14 17:46:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-14 17:46:00,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:46:00,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-14 17:46:00,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-14 17:46:00,291 INFO L130 BoogieDeclarations]: Found specification of procedure at76_delete_device [2021-12-14 17:46:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_delete_device [2021-12-14 17:46:00,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-12-14 17:46:00,291 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_mib [2021-12-14 17:46:00,291 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_mib [2021-12-14 17:46:00,291 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_radio [2021-12-14 17:46:00,292 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_radio [2021-12-14 17:46:00,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:46:00,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:46:00,292 INFO L130 BoogieDeclarations]: Found specification of procedure led_trigger_event [2021-12-14 17:46:00,292 INFO L138 BoogieDeclarations]: Found implementation of procedure led_trigger_event [2021-12-14 17:46:00,293 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_card_command [2021-12-14 17:46:00,293 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_card_command [2021-12-14 17:46:00,293 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_cmd_status [2021-12-14 17:46:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_cmd_status [2021-12-14 17:46:00,294 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-12-14 17:46:00,294 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-12-14 17:46:00,294 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-14 17:46:00,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-14 17:46:00,295 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:46:00,295 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:46:00,295 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_delayed_work [2021-12-14 17:46:00,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_delayed_work [2021-12-14 17:46:00,295 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-14 17:46:00,295 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-14 17:46:00,295 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-14 17:46:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-14 17:46:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-14 17:46:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-14 17:46:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_mib [2021-12-14 17:46:00,296 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_mib [2021-12-14 17:46:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-14 17:46:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-14 17:46:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:46:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-14 17:46:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-14 17:46:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:46:00,297 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_pm_mode [2021-12-14 17:46:00,297 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_pm_mode [2021-12-14 17:46:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_key [2021-12-14 17:46:00,298 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_key [2021-12-14 17:46:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure at76_is_505a [2021-12-14 17:46:00,298 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_is_505a [2021-12-14 17:46:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:46:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_hw_cfg [2021-12-14 17:46:00,298 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_hw_cfg [2021-12-14 17:46:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure at76_config [2021-12-14 17:46:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_config [2021-12-14 17:46:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-12-14 17:46:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-12-14 17:46:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:46:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:46:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-14 17:46:00,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-14 17:46:00,300 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-14 17:46:00,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-14 17:46:00,301 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-12-14 17:46:00,301 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-12-14 17:46:00,301 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-14 17:46:00,301 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-14 17:46:00,301 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_op_mode [2021-12-14 17:46:00,301 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_op_mode [2021-12-14 17:46:00,301 INFO L130 BoogieDeclarations]: Found specification of procedure at76_remove_interface [2021-12-14 17:46:00,302 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_remove_interface [2021-12-14 17:46:00,302 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2021-12-14 17:46:00,302 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2021-12-14 17:46:00,302 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:46:00,302 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:46:00,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:46:00,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:46:00,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:46:00,303 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_name [2021-12-14 17:46:00,303 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_name [2021-12-14 17:46:00,303 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2021-12-14 17:46:00,304 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2021-12-14 17:46:00,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:46:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure at76_start_monitor [2021-12-14 17:46:00,306 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_start_monitor [2021-12-14 17:46:00,306 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_stop_queues [2021-12-14 17:46:00,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_stop_queues [2021-12-14 17:46:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-12-14 17:46:00,308 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-12-14 17:46:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:46:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-12-14 17:46:00,312 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-12-14 17:46:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:46:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-14 17:46:00,312 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-14 17:46:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-14 17:46:00,313 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-14 17:46:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-14 17:46:00,313 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-14 17:46:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-14 17:46:00,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-14 17:46:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure at76_configure_filter [2021-12-14 17:46:00,313 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_configure_filter [2021-12-14 17:46:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-14 17:46:00,314 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-14 17:46:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_work [2021-12-14 17:46:00,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_work [2021-12-14 17:46:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-12-14 17:46:00,314 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-12-14 17:46:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:46:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure at76_mac80211_tx [2021-12-14 17:46:00,314 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_mac80211_tx [2021-12-14 17:46:00,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:46:00,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:46:00,315 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2021-12-14 17:46:00,315 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2021-12-14 17:46:00,826 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:46:00,828 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:46:00,999 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 17:46:08,331 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:46:08,346 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:46:08,346 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-14 17:46:08,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:46:08 BoogieIcfgContainer [2021-12-14 17:46:08,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:46:08,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:46:08,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:46:08,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:46:08,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:45:57" (1/3) ... [2021-12-14 17:46:08,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a23146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:46:08, skipping insertion in model container [2021-12-14 17:46:08,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:45:59" (2/3) ... [2021-12-14 17:46:08,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a23146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:46:08, skipping insertion in model container [2021-12-14 17:46:08,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:46:08" (3/3) ... [2021-12-14 17:46:08,355 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--at76c50x-usb.ko-entry_point.cil.out.i [2021-12-14 17:46:08,358 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:46:08,359 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:46:08,401 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:46:08,409 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 [2021-12-14 17:46:08,410 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:46:08,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 1340 states, 975 states have (on average 1.3876923076923078) internal successors, (1353), 999 states have internal predecessors, (1353), 296 states have call successors, (296), 68 states have call predecessors, (296), 67 states have return successors, (291), 290 states have call predecessors, (291), 291 states have call successors, (291) [2021-12-14 17:46:08,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-14 17:46:08,458 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:46:08,459 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-12-14 17:46:08,460 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:46:08,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:46:08,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1941045880, now seen corresponding path program 1 times [2021-12-14 17:46:08,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:46:08,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6358114] [2021-12-14 17:46:08,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:46:08,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:46:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:08,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:46:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:09,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:46:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:09,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:46:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:09,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:46:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:09,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:46:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:09,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:46:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:09,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:46:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:09,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:46:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:09,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-14 17:46:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:09,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 17:46:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:09,118 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-12-14 17:46:09,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:46:09,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6358114] [2021-12-14 17:46:09,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6358114] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:46:09,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:46:09,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:46:09,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294520953] [2021-12-14 17:46:09,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:46:09,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:46:09,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:46:09,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:46:09,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:46:09,150 INFO L87 Difference]: Start difference. First operand has 1340 states, 975 states have (on average 1.3876923076923078) internal successors, (1353), 999 states have internal predecessors, (1353), 296 states have call successors, (296), 68 states have call predecessors, (296), 67 states have return successors, (291), 290 states have call predecessors, (291), 291 states have call successors, (291) Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-14 17:46:15,557 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:46:17,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:46:19,599 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:46:21,627 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:46:22,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:46:22,765 INFO L93 Difference]: Finished difference Result 4269 states and 6520 transitions. [2021-12-14 17:46:22,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:46:22,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 80 [2021-12-14 17:46:22,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:46:22,795 INFO L225 Difference]: With dead ends: 4269 [2021-12-14 17:46:22,795 INFO L226 Difference]: Without dead ends: 2916 [2021-12-14 17:46:22,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:46:22,808 INFO L933 BasicCegarLoop]: 2127 mSDtfsCounter, 2952 mSDsluCounter, 3496 mSDsCounter, 0 mSdLazyCounter, 2155 mSolverCounterSat, 1561 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3203 SdHoareTripleChecker+Valid, 5623 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1561 IncrementalHoareTripleChecker+Valid, 2155 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:46:22,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3203 Valid, 5623 Invalid, 3720 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1561 Valid, 2155 Invalid, 4 Unknown, 0 Unchecked, 13.2s Time] [2021-12-14 17:46:22,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2021-12-14 17:46:22,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2602. [2021-12-14 17:46:22,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 1902 states have (on average 1.3796004206098844) internal successors, (2624), 1936 states have internal predecessors, (2624), 567 states have call successors, (567), 133 states have call predecessors, (567), 132 states have return successors, (566), 564 states have call predecessors, (566), 566 states have call successors, (566) [2021-12-14 17:46:23,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3757 transitions. [2021-12-14 17:46:23,007 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3757 transitions. Word has length 80 [2021-12-14 17:46:23,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:46:23,008 INFO L470 AbstractCegarLoop]: Abstraction has 2602 states and 3757 transitions. [2021-12-14 17:46:23,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-14 17:46:23,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3757 transitions. [2021-12-14 17:46:23,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-14 17:46:23,016 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:46:23,017 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-12-14 17:46:23,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:46:23,020 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:46:23,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:46:23,020 INFO L85 PathProgramCache]: Analyzing trace with hash -227298957, now seen corresponding path program 1 times [2021-12-14 17:46:23,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:46:23,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784330167] [2021-12-14 17:46:23,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:46:23,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:46:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:23,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:46:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:23,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:46:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:23,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:46:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:23,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:46:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:23,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:46:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:23,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:46:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:23,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:46:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:23,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:46:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:23,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-14 17:46:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:23,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 17:46:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:23,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:46:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:23,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:46:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:23,523 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-14 17:46:23,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:46:23,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784330167] [2021-12-14 17:46:23,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784330167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:46:23,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:46:23,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:46:23,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792080616] [2021-12-14 17:46:23,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:46:23,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:46:23,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:46:23,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:46:23,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:46:23,526 INFO L87 Difference]: Start difference. First operand 2602 states and 3757 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 17:46:31,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:46:33,110 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:46:35,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:46:37,163 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:46:38,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:46:38,081 INFO L93 Difference]: Finished difference Result 8375 states and 12441 transitions. [2021-12-14 17:46:38,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:46:38,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 96 [2021-12-14 17:46:38,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:46:38,108 INFO L225 Difference]: With dead ends: 8375 [2021-12-14 17:46:38,109 INFO L226 Difference]: Without dead ends: 5787 [2021-12-14 17:46:38,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-14 17:46:38,118 INFO L933 BasicCegarLoop]: 2102 mSDtfsCounter, 2961 mSDsluCounter, 7322 mSDsCounter, 0 mSdLazyCounter, 3032 mSolverCounterSat, 1563 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3223 SdHoareTripleChecker+Valid, 9424 SdHoareTripleChecker+Invalid, 4599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1563 IncrementalHoareTripleChecker+Valid, 3032 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:46:38,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3223 Valid, 9424 Invalid, 4599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1563 Valid, 3032 Invalid, 4 Unknown, 0 Unchecked, 14.2s Time] [2021-12-14 17:46:38,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5787 states. [2021-12-14 17:46:38,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5787 to 5197. [2021-12-14 17:46:38,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 3803 states have (on average 1.3807520378648435) internal successors, (5251), 3873 states have internal predecessors, (5251), 1123 states have call successors, (1123), 265 states have call predecessors, (1123), 270 states have return successors, (1143), 1122 states have call predecessors, (1143), 1122 states have call successors, (1143) [2021-12-14 17:46:38,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 7517 transitions. [2021-12-14 17:46:38,285 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 7517 transitions. Word has length 96 [2021-12-14 17:46:38,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:46:38,287 INFO L470 AbstractCegarLoop]: Abstraction has 5197 states and 7517 transitions. [2021-12-14 17:46:38,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-14 17:46:38,287 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 7517 transitions. [2021-12-14 17:46:38,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-14 17:46:38,297 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:46:38,297 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 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] [2021-12-14 17:46:38,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:46:38,298 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:46:38,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:46:38,298 INFO L85 PathProgramCache]: Analyzing trace with hash 415887363, now seen corresponding path program 1 times [2021-12-14 17:46:38,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:46:38,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15743311] [2021-12-14 17:46:38,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:46:38,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:46:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:46:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:46:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:46:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:46:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:46:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:46:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:46:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:46:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-14 17:46:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 17:46:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:46:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 17:46:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:46:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:46:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 17:46:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 17:46:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-14 17:46:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:38,727 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-12-14 17:46:38,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:46:38,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15743311] [2021-12-14 17:46:38,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15743311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:46:38,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:46:38,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:46:38,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898137129] [2021-12-14 17:46:38,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:46:38,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:46:38,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:46:38,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:46:38,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:46:38,731 INFO L87 Difference]: Start difference. First operand 5197 states and 7517 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-14 17:46:45,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:46:47,244 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:46:49,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:46:49,327 INFO L93 Difference]: Finished difference Result 13329 states and 19600 transitions. [2021-12-14 17:46:49,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:46:49,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2021-12-14 17:46:49,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:46:49,369 INFO L225 Difference]: With dead ends: 13329 [2021-12-14 17:46:49,370 INFO L226 Difference]: Without dead ends: 8156 [2021-12-14 17:46:49,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:46:49,391 INFO L933 BasicCegarLoop]: 1991 mSDtfsCounter, 1270 mSDsluCounter, 4081 mSDsCounter, 0 mSdLazyCounter, 2798 mSolverCounterSat, 531 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 6072 SdHoareTripleChecker+Invalid, 3331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2798 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:46:49,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1421 Valid, 6072 Invalid, 3331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2798 Invalid, 2 Unknown, 0 Unchecked, 10.3s Time] [2021-12-14 17:46:49,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8156 states. [2021-12-14 17:46:49,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8156 to 7456. [2021-12-14 17:46:49,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7456 states, 5495 states have (on average 1.3777979981801638) internal successors, (7571), 5581 states have internal predecessors, (7571), 1550 states have call successors, (1550), 397 states have call predecessors, (1550), 410 states have return successors, (1586), 1549 states have call predecessors, (1586), 1549 states have call successors, (1586) [2021-12-14 17:46:49,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 10707 transitions. [2021-12-14 17:46:49,686 INFO L78 Accepts]: Start accepts. Automaton has 7456 states and 10707 transitions. Word has length 144 [2021-12-14 17:46:49,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:46:49,689 INFO L470 AbstractCegarLoop]: Abstraction has 7456 states and 10707 transitions. [2021-12-14 17:46:49,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-14 17:46:49,699 INFO L276 IsEmpty]: Start isEmpty. Operand 7456 states and 10707 transitions. [2021-12-14 17:46:49,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-14 17:46:49,705 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:46:49,705 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 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] [2021-12-14 17:46:49,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:46:49,705 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:46:49,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:46:49,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2082112872, now seen corresponding path program 1 times [2021-12-14 17:46:49,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:46:49,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062140285] [2021-12-14 17:46:49,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:46:49,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:46:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:49,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:46:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:49,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:46:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:49,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:46:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:49,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:46:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:49,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:46:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:49,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:46:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:49,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:46:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:49,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:46:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:49,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-14 17:46:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:49,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 17:46:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:49,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 17:46:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:50,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:46:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:50,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 17:46:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:50,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:46:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:50,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:46:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:50,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:46:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:50,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 17:46:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:50,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-14 17:46:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:46:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-14 17:46:50,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:46:50,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062140285] [2021-12-14 17:46:50,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062140285] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:46:50,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:46:50,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:46:50,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721694962] [2021-12-14 17:46:50,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:46:50,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:46:50,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:46:50,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:46:50,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:46:50,101 INFO L87 Difference]: Start difference. First operand 7456 states and 10707 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 17:46:57,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:47:00,012 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:47:02,025 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []