./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 ae007674 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-dev-ae00767 [2021-12-28 03:58:17,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:58:17,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:58:17,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:58:17,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:58:17,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:58:17,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:58:17,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:58:17,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:58:17,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:58:17,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:58:17,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:58:17,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:58:17,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:58:17,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:58:17,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:58:17,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:58:17,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:58:17,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:58:17,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:58:17,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:58:17,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:58:17,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:58:17,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:58:17,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:58:17,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:58:17,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:58:17,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:58:17,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:58:17,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:58:17,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:58:17,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:58:17,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:58:17,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:58:17,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:58:17,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:58:17,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:58:17,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:58:17,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:58:17,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:58:17,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:58:17,565 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:58:17,579 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:58:17,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:58:17,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:58:17,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:58:17,580 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:58:17,580 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:58:17,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:58:17,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:58:17,581 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:58:17,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:58:17,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:58:17,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:58:17,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:58:17,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:58:17,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:58:17,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:58:17,582 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:58:17,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:58:17,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:58:17,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:58:17,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:58:17,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:58:17,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:58:17,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:58:17,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:58:17,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:58:17,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:58:17,591 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:58:17,591 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:58:17,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:58:17,591 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d88455bf5089be24833f69dfcbd91003e7e136bcd5efcd63ae18e59d7f59e87d [2021-12-28 03:58:17,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:58:17,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:58:17,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:58:17,860 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:58:17,860 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:58:17,861 INFO L432 ainManager$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 [2021-12-28 03:58:17,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/221d141e3/36df20d716ad45dbab4b726ac64d7862/FLAG758c06a5d [2021-12-28 03:58:18,530 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:58:18,531 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 [2021-12-28 03:58:18,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/221d141e3/36df20d716ad45dbab4b726ac64d7862/FLAG758c06a5d [2021-12-28 03:58:18,919 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/221d141e3/36df20d716ad45dbab4b726ac64d7862 [2021-12-28 03:58:18,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:58:18,922 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:58:18,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:58:18,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:58:18,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:58:18,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:58:18" (1/1) ... [2021-12-28 03:58:18,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bd1531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:58:18, skipping insertion in model container [2021-12-28 03:58:18,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:58:18" (1/1) ... [2021-12-28 03:58:18,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:58:19,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:58:19,668 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] [2021-12-28 03:58:20,439 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:58:20,487 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:58:20,623 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] [2021-12-28 03:58:20,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:58:20,849 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:58:20,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:58:20 WrapperNode [2021-12-28 03:58:20,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:58:20,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:58:20,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:58:20,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:58:20,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:58:20" (1/1) ... [2021-12-28 03:58:20,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:58:20" (1/1) ... [2021-12-28 03:58:21,095 INFO L137 Inliner]: procedures = 239, calls = 2983, calls flagged for inlining = 111, calls inlined = 96, statements flattened = 5266 [2021-12-28 03:58:21,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:58:21,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:58:21,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:58:21,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:58:21,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:58:20" (1/1) ... [2021-12-28 03:58:21,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:58:20" (1/1) ... [2021-12-28 03:58:21,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:58:20" (1/1) ... [2021-12-28 03:58:21,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:58:20" (1/1) ... [2021-12-28 03:58:21,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:58:20" (1/1) ... [2021-12-28 03:58:21,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:58:20" (1/1) ... [2021-12-28 03:58:21,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:58:20" (1/1) ... [2021-12-28 03:58:21,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:58:21,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:58:21,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:58:21,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:58:21,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:58:20" (1/1) ... [2021-12-28 03:58:21,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:58:21,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:58:21,452 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) [2021-12-28 03:58:21,467 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 [2021-12-28 03:58:21,481 INFO L130 BoogieDeclarations]: Found specification of procedure at76_hw_scan [2021-12-28 03:58:21,485 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_hw_scan [2021-12-28 03:58:21,485 INFO L130 BoogieDeclarations]: Found specification of procedure at76_dfu_get_status [2021-12-28 03:58:21,485 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_dfu_get_status [2021-12-28 03:58:21,485 INFO L130 BoogieDeclarations]: Found specification of procedure at76_join [2021-12-28 03:58:21,485 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_join [2021-12-28 03:58:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-28 03:58:21,486 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-28 03:58:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:58:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:58:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 03:58:21,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 03:58:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2021-12-28 03:58:21,486 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2021-12-28 03:58:21,487 INFO L130 BoogieDeclarations]: Found specification of procedure at76_submit_rx_urb [2021-12-28 03:58:21,487 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_submit_rx_urb [2021-12-28 03:58:21,487 INFO L130 BoogieDeclarations]: Found specification of procedure at76_add_interface [2021-12-28 03:58:21,487 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_add_interface [2021-12-28 03:58:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_timeout [2021-12-28 03:58:21,502 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_timeout [2021-12-28 03:58:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:58:21,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:58:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-28 03:58:21,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-28 03:58:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure at76_bss_info_changed [2021-12-28 03:58:21,502 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_bss_info_changed [2021-12-28 03:58:21,502 INFO L130 BoogieDeclarations]: Found specification of procedure at76_wait_completion [2021-12-28 03:58:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_wait_completion [2021-12-28 03:58:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 03:58:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 03:58:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-28 03:58:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-28 03:58:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:58:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:58:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 03:58:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 03:58:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:58:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:58:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:58:21,503 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-28 03:58:21,503 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-28 03:58:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:58:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-28 03:58:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-28 03:58:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure at76_delete_device [2021-12-28 03:58:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_delete_device [2021-12-28 03:58:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-12-28 03:58:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_mib [2021-12-28 03:58:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_mib [2021-12-28 03:58:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_radio [2021-12-28 03:58:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_radio [2021-12-28 03:58:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:58:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:58:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure led_trigger_event [2021-12-28 03:58:21,504 INFO L138 BoogieDeclarations]: Found implementation of procedure led_trigger_event [2021-12-28 03:58:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_card_command [2021-12-28 03:58:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_card_command [2021-12-28 03:58:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_cmd_status [2021-12-28 03:58:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_cmd_status [2021-12-28 03:58:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-12-28 03:58:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-12-28 03:58:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-28 03:58:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-28 03:58:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 03:58:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 03:58:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_delayed_work [2021-12-28 03:58:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_delayed_work [2021-12-28 03:58:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-28 03:58:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-28 03:58:21,505 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-28 03:58:21,506 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-28 03:58:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-28 03:58:21,506 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-28 03:58:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_mib [2021-12-28 03:58:21,506 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_mib [2021-12-28 03:58:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-28 03:58:21,506 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-28 03:58:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 03:58:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-28 03:58:21,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-28 03:58:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 03:58:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_pm_mode [2021-12-28 03:58:21,506 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_pm_mode [2021-12-28 03:58:21,506 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_key [2021-12-28 03:58:21,506 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_key [2021-12-28 03:58:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure at76_is_505a [2021-12-28 03:58:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_is_505a [2021-12-28 03:58:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:58:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_hw_cfg [2021-12-28 03:58:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_hw_cfg [2021-12-28 03:58:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure at76_config [2021-12-28 03:58:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_config [2021-12-28 03:58:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-12-28 03:58:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-12-28 03:58:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 03:58:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 03:58:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-28 03:58:21,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-28 03:58:21,507 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-28 03:58:21,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-28 03:58:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-12-28 03:58:21,508 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-12-28 03:58:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-28 03:58:21,508 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-28 03:58:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_op_mode [2021-12-28 03:58:21,508 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_op_mode [2021-12-28 03:58:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure at76_remove_interface [2021-12-28 03:58:21,508 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_remove_interface [2021-12-28 03:58:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2021-12-28 03:58:21,508 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2021-12-28 03:58:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 03:58:21,508 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 03:58:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:58:21,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:58:21,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:58:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_name [2021-12-28 03:58:21,509 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_name [2021-12-28 03:58:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2021-12-28 03:58:21,511 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2021-12-28 03:58:21,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:58:21,514 INFO L130 BoogieDeclarations]: Found specification of procedure at76_start_monitor [2021-12-28 03:58:21,514 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_start_monitor [2021-12-28 03:58:21,514 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_stop_queues [2021-12-28 03:58:21,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_stop_queues [2021-12-28 03:58:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-12-28 03:58:21,527 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-12-28 03:58:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:58:21,527 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-12-28 03:58:21,527 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-12-28 03:58:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:58:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-28 03:58:21,528 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-28 03:58:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-28 03:58:21,528 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-28 03:58:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-28 03:58:21,528 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-28 03:58:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-28 03:58:21,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-28 03:58:21,528 INFO L130 BoogieDeclarations]: Found specification of procedure at76_configure_filter [2021-12-28 03:58:21,528 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_configure_filter [2021-12-28 03:58:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-28 03:58:21,529 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-28 03:58:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_work [2021-12-28 03:58:21,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_work [2021-12-28 03:58:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-12-28 03:58:21,529 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-12-28 03:58:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:58:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure at76_mac80211_tx [2021-12-28 03:58:21,529 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_mac80211_tx [2021-12-28 03:58:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:58:21,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:58:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2021-12-28 03:58:21,529 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2021-12-28 03:58:22,104 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:58:22,119 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:58:22,357 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 03:58:29,947 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:58:29,964 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:58:29,964 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-28 03:58:29,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:58:29 BoogieIcfgContainer [2021-12-28 03:58:29,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:58:29,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:58:29,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:58:29,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:58:29,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:58:18" (1/3) ... [2021-12-28 03:58:29,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dfed982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:58:29, skipping insertion in model container [2021-12-28 03:58:29,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:58:20" (2/3) ... [2021-12-28 03:58:29,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dfed982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:58:29, skipping insertion in model container [2021-12-28 03:58:29,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:58:29" (3/3) ... [2021-12-28 03:58:29,973 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 [2021-12-28 03:58:29,977 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:58:29,977 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:58:30,021 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:58:30,025 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 [2021-12-28 03:58:30,025 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:58:30,050 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) [2021-12-28 03:58:30,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-28 03:58:30,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:58:30,059 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] [2021-12-28 03:58:30,059 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:58:30,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:58:30,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1941045880, now seen corresponding path program 1 times [2021-12-28 03:58:30,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:58:30,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806851210] [2021-12-28 03:58:30,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:58:30,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:58:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:30,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:58:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:30,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:58:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:30,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:58:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:30,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:58:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:30,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:58:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:30,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:58:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:30,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:58:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:30,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:58:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:30,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 03:58:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:30,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:58:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:30,857 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-12-28 03:58:30,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:58:30,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806851210] [2021-12-28 03:58:30,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806851210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:58:30,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:58:30,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:58:30,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086330757] [2021-12-28 03:58:30,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:58:30,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:58:30,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:58:30,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:58:30,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:58:30,893 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) [2021-12-28 03:58:37,557 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 [] [2021-12-28 03:58:39,575 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:58:41,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:58:43,634 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 [] [2021-12-28 03:58:44,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:58:44,766 INFO L93 Difference]: Finished difference Result 4269 states and 6520 transitions. [2021-12-28 03:58:44,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:58:44,768 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 [2021-12-28 03:58:44,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:58:44,801 INFO L225 Difference]: With dead ends: 4269 [2021-12-28 03:58:44,802 INFO L226 Difference]: Without dead ends: 2916 [2021-12-28 03:58:44,812 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 [2021-12-28 03:58:44,815 INFO L933 BasicCegarLoop]: 2143 mSDtfsCounter, 2859 mSDsluCounter, 3246 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 1553 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3117 SdHoareTripleChecker+Valid, 5389 SdHoareTripleChecker+Invalid, 3987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1553 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:58:44,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3117 Valid, 5389 Invalid, 3987 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1553 Valid, 2430 Invalid, 4 Unknown, 0 Unchecked, 13.5s Time] [2021-12-28 03:58:44,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2021-12-28 03:58:44,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2602. [2021-12-28 03:58:44,995 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) [2021-12-28 03:58:45,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3757 transitions. [2021-12-28 03:58:45,013 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3757 transitions. Word has length 80 [2021-12-28 03:58:45,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:58:45,014 INFO L470 AbstractCegarLoop]: Abstraction has 2602 states and 3757 transitions. [2021-12-28 03:58:45,014 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) [2021-12-28 03:58:45,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3757 transitions. [2021-12-28 03:58:45,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-28 03:58:45,025 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:58:45,025 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] [2021-12-28 03:58:45,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:58:45,031 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:58:45,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:58:45,032 INFO L85 PathProgramCache]: Analyzing trace with hash -227298957, now seen corresponding path program 1 times [2021-12-28 03:58:45,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:58:45,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759363178] [2021-12-28 03:58:45,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:58:45,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:58:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:45,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:58:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:45,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:58:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:45,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:58:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:45,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:58:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:45,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:58:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:45,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:58:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:45,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:58:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:45,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:58:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:45,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 03:58:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:45,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:58:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:45,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 03:58:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:45,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:58:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:58:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-28 03:58:45,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:58:45,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759363178] [2021-12-28 03:58:45,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759363178] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:58:45,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:58:45,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:58:45,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749730447] [2021-12-28 03:58:45,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:58:45,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:58:45,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:58:45,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:58:45,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:58:45,486 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) [2021-12-28 03:58:52,875 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 [] [2021-12-28 03:58:54,896 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:58:56,933 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:58:58,962 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 [] [2021-12-28 03:59:00,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:59:00,047 INFO L93 Difference]: Finished difference Result 8375 states and 12441 transitions. [2021-12-28 03:59:00,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:59:00,048 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 [2021-12-28 03:59:00,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:59:00,078 INFO L225 Difference]: With dead ends: 8375 [2021-12-28 03:59:00,078 INFO L226 Difference]: Without dead ends: 5787 [2021-12-28 03:59:00,089 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 [2021-12-28 03:59:00,089 INFO L933 BasicCegarLoop]: 2154 mSDtfsCounter, 2916 mSDsluCounter, 6172 mSDsCounter, 0 mSdLazyCounter, 4224 mSolverCounterSat, 1554 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3173 SdHoareTripleChecker+Valid, 8326 SdHoareTripleChecker+Invalid, 5782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1554 IncrementalHoareTripleChecker+Valid, 4224 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:59:00,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3173 Valid, 8326 Invalid, 5782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1554 Valid, 4224 Invalid, 4 Unknown, 0 Unchecked, 14.2s Time] [2021-12-28 03:59:00,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5787 states. [2021-12-28 03:59:00,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5787 to 5197. [2021-12-28 03:59:00,253 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) [2021-12-28 03:59:00,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 7517 transitions. [2021-12-28 03:59:00,275 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 7517 transitions. Word has length 96 [2021-12-28 03:59:00,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:59:00,277 INFO L470 AbstractCegarLoop]: Abstraction has 5197 states and 7517 transitions. [2021-12-28 03:59:00,277 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) [2021-12-28 03:59:00,277 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 7517 transitions. [2021-12-28 03:59:00,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-28 03:59:00,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:59:00,289 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] [2021-12-28 03:59:00,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:59:00,290 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:59:00,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:59:00,290 INFO L85 PathProgramCache]: Analyzing trace with hash 415887363, now seen corresponding path program 1 times [2021-12-28 03:59:00,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:59:00,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008492438] [2021-12-28 03:59:00,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:59:00,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:59:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:00,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:59:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:00,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:59:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:00,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:59:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:00,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:59:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:00,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:59:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:00,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:59:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:00,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:59:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:00,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:59:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:00,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 03:59:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:00,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:59:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:00,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 03:59:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:00,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 03:59:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:00,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:59:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:00,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:59:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:00,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 03:59:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:00,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:59:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:00,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 03:59:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:00,701 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-12-28 03:59:00,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:59:00,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008492438] [2021-12-28 03:59:00,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008492438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:59:00,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:59:00,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:59:00,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148411300] [2021-12-28 03:59:00,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:59:00,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:59:00,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:59:00,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:59:00,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:59:00,705 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) [2021-12-28 03:59:06,226 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 [] [2021-12-28 03:59:08,270 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 [] [2021-12-28 03:59:10,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:59:10,132 INFO L93 Difference]: Finished difference Result 13329 states and 19600 transitions. [2021-12-28 03:59:10,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:59:10,133 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 [2021-12-28 03:59:10,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:59:10,171 INFO L225 Difference]: With dead ends: 13329 [2021-12-28 03:59:10,172 INFO L226 Difference]: Without dead ends: 8156 [2021-12-28 03:59:10,189 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 [2021-12-28 03:59:10,194 INFO L933 BasicCegarLoop]: 1995 mSDtfsCounter, 1270 mSDsluCounter, 3830 mSDsCounter, 0 mSdLazyCounter, 3063 mSolverCounterSat, 531 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 5825 SdHoareTripleChecker+Invalid, 3596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 3063 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-12-28 03:59:10,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1419 Valid, 5825 Invalid, 3596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 3063 Invalid, 2 Unknown, 0 Unchecked, 9.2s Time] [2021-12-28 03:59:10,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8156 states. [2021-12-28 03:59:10,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8156 to 7456. [2021-12-28 03:59:10,462 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) [2021-12-28 03:59:10,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 10707 transitions. [2021-12-28 03:59:10,482 INFO L78 Accepts]: Start accepts. Automaton has 7456 states and 10707 transitions. Word has length 144 [2021-12-28 03:59:10,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:59:10,484 INFO L470 AbstractCegarLoop]: Abstraction has 7456 states and 10707 transitions. [2021-12-28 03:59:10,494 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) [2021-12-28 03:59:10,494 INFO L276 IsEmpty]: Start isEmpty. Operand 7456 states and 10707 transitions. [2021-12-28 03:59:10,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-28 03:59:10,499 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:59:10,499 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] [2021-12-28 03:59:10,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:59:10,500 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:59:10,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:59:10,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2082112872, now seen corresponding path program 1 times [2021-12-28 03:59:10,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:59:10,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408122584] [2021-12-28 03:59:10,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:59:10,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:59:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:10,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:59:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:10,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:59:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:10,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:59:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:10,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:59:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:10,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:59:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:10,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:59:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:10,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:59:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:10,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:59:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 03:59:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:10,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 03:59:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:10,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 03:59:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:10,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 03:59:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:10,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-28 03:59:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:10,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 03:59:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:10,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:59:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:10,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:59:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:10,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-28 03:59:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:10,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-28 03:59:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:59:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-28 03:59:10,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:59:10,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408122584] [2021-12-28 03:59:10,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408122584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:59:10,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:59:10,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:59:10,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841728340] [2021-12-28 03:59:10,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:59:10,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:59:10,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:59:10,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:59:10,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:59:10,883 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) [2021-12-28 03:59:17,273 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 [] [2021-12-28 03:59:19,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:59:21,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:59:23,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:59:25,409 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []