./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 ff03de63 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-ff03de6 [2021-12-21 16:13:40,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:13:40,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:13:40,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:13:40,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:13:40,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:13:40,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:13:40,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:13:40,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:13:40,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:13:40,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:13:40,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:13:40,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:13:40,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:13:40,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:13:40,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:13:40,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:13:40,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:13:40,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:13:40,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:13:40,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:13:40,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:13:40,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:13:40,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:13:40,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:13:40,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:13:40,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:13:40,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:13:40,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:13:40,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:13:40,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:13:40,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:13:40,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:13:40,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:13:40,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:13:40,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:13:40,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:13:40,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:13:40,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:13:40,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:13:40,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:13:40,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:13:40,449 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:13:40,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:13:40,449 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:13:40,450 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:13:40,450 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:13:40,450 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:13:40,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:13:40,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:13:40,451 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:13:40,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:13:40,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:13:40,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:13:40,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:13:40,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:13:40,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:13:40,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:13:40,452 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:13:40,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:13:40,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:13:40,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:13:40,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:13:40,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:13:40,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:13:40,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:13:40,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:13:40,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:13:40,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:13:40,454 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:13:40,454 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:13:40,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:13:40,454 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:13:40,454 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d88455bf5089be24833f69dfcbd91003e7e136bcd5efcd63ae18e59d7f59e87d [2021-12-21 16:13:40,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:13:40,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:13:40,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:13:40,600 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:13:40,600 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:13:40,601 INFO L432 ainManager$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 [2021-12-21 16:13:40,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42625a18d/cfec3d6545794e488eba385279b5217c/FLAG6e98c918a [2021-12-21 16:13:41,326 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:13:41,327 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 [2021-12-21 16:13:41,365 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42625a18d/cfec3d6545794e488eba385279b5217c/FLAG6e98c918a [2021-12-21 16:13:41,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42625a18d/cfec3d6545794e488eba385279b5217c [2021-12-21 16:13:41,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:13:41,625 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:13:41,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:13:41,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:13:41,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:13:41,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:13:41" (1/1) ... [2021-12-21 16:13:41,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fecf419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:41, skipping insertion in model container [2021-12-21 16:13:41,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:13:41" (1/1) ... [2021-12-21 16:13:41,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:13:41,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:13:42,355 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] [2021-12-21 16:13:42,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:13:43,074 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:13:43,160 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] [2021-12-21 16:13:43,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:13:43,355 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:13:43,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:43 WrapperNode [2021-12-21 16:13:43,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:13:43,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:13:43,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:13:43,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:13:43,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:43" (1/1) ... [2021-12-21 16:13:43,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:43" (1/1) ... [2021-12-21 16:13:43,592 INFO L137 Inliner]: procedures = 239, calls = 2983, calls flagged for inlining = 111, calls inlined = 96, statements flattened = 5266 [2021-12-21 16:13:43,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:13:43,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:13:43,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:13:43,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:13:43,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:43" (1/1) ... [2021-12-21 16:13:43,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:43" (1/1) ... [2021-12-21 16:13:43,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:43" (1/1) ... [2021-12-21 16:13:43,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:43" (1/1) ... [2021-12-21 16:13:43,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:43" (1/1) ... [2021-12-21 16:13:43,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:43" (1/1) ... [2021-12-21 16:13:43,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:43" (1/1) ... [2021-12-21 16:13:43,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:13:43,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:13:43,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:13:43,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:13:43,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:43" (1/1) ... [2021-12-21 16:13:43,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:13:43,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:13:43,820 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) [2021-12-21 16:13:43,837 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 [2021-12-21 16:13:43,853 INFO L130 BoogieDeclarations]: Found specification of procedure at76_hw_scan [2021-12-21 16:13:43,853 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_hw_scan [2021-12-21 16:13:43,854 INFO L130 BoogieDeclarations]: Found specification of procedure at76_dfu_get_status [2021-12-21 16:13:43,854 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_dfu_get_status [2021-12-21 16:13:43,854 INFO L130 BoogieDeclarations]: Found specification of procedure at76_join [2021-12-21 16:13:43,854 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_join [2021-12-21 16:13:43,854 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-21 16:13:43,854 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-21 16:13:43,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 16:13:43,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 16:13:43,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 16:13:43,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 16:13:43,855 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2021-12-21 16:13:43,855 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2021-12-21 16:13:43,855 INFO L130 BoogieDeclarations]: Found specification of procedure at76_submit_rx_urb [2021-12-21 16:13:43,855 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_submit_rx_urb [2021-12-21 16:13:43,855 INFO L130 BoogieDeclarations]: Found specification of procedure at76_add_interface [2021-12-21 16:13:43,855 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_add_interface [2021-12-21 16:13:43,855 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_timeout [2021-12-21 16:13:43,856 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_timeout [2021-12-21 16:13:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:13:43,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:13:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-21 16:13:43,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-21 16:13:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure at76_bss_info_changed [2021-12-21 16:13:43,856 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_bss_info_changed [2021-12-21 16:13:43,856 INFO L130 BoogieDeclarations]: Found specification of procedure at76_wait_completion [2021-12-21 16:13:43,856 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_wait_completion [2021-12-21 16:13:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-21 16:13:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-21 16:13:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-21 16:13:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-21 16:13:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:13:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:13:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-21 16:13:43,857 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-21 16:13:43,857 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 16:13:43,858 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 16:13:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:13:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-21 16:13:43,858 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-21 16:13:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:13:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-21 16:13:43,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-21 16:13:43,858 INFO L130 BoogieDeclarations]: Found specification of procedure at76_delete_device [2021-12-21 16:13:43,858 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_delete_device [2021-12-21 16:13:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-12-21 16:13:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_mib [2021-12-21 16:13:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_mib [2021-12-21 16:13:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_radio [2021-12-21 16:13:43,859 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_radio [2021-12-21 16:13:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:13:43,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:13:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure led_trigger_event [2021-12-21 16:13:43,860 INFO L138 BoogieDeclarations]: Found implementation of procedure led_trigger_event [2021-12-21 16:13:43,860 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_card_command [2021-12-21 16:13:43,860 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_card_command [2021-12-21 16:13:43,861 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_cmd_status [2021-12-21 16:13:43,861 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_cmd_status [2021-12-21 16:13:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-12-21 16:13:43,862 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-12-21 16:13:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-21 16:13:43,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-21 16:13:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-21 16:13:43,862 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-21 16:13:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_delayed_work [2021-12-21 16:13:43,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_delayed_work [2021-12-21 16:13:43,862 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-21 16:13:43,863 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-21 16:13:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-21 16:13:43,863 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-21 16:13:43,863 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-21 16:13:43,863 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-21 16:13:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_mib [2021-12-21 16:13:43,864 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_mib [2021-12-21 16:13:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-21 16:13:43,864 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-21 16:13:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 16:13:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-21 16:13:43,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-21 16:13:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 16:13:43,864 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_pm_mode [2021-12-21 16:13:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_pm_mode [2021-12-21 16:13:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure at76_set_key [2021-12-21 16:13:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_set_key [2021-12-21 16:13:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure at76_is_505a [2021-12-21 16:13:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_is_505a [2021-12-21 16:13:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:13:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_hw_cfg [2021-12-21 16:13:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_hw_cfg [2021-12-21 16:13:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure at76_config [2021-12-21 16:13:43,866 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_config [2021-12-21 16:13:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-12-21 16:13:43,866 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-12-21 16:13:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-21 16:13:43,866 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-21 16:13:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-21 16:13:43,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-21 16:13:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-21 16:13:43,867 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-21 16:13:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-12-21 16:13:43,868 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-12-21 16:13:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-21 16:13:43,868 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-21 16:13:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure at76_get_op_mode [2021-12-21 16:13:43,868 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_get_op_mode [2021-12-21 16:13:43,868 INFO L130 BoogieDeclarations]: Found specification of procedure at76_remove_interface [2021-12-21 16:13:43,869 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_remove_interface [2021-12-21 16:13:43,869 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2021-12-21 16:13:43,869 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2021-12-21 16:13:43,869 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 16:13:43,869 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 16:13:43,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:13:43,869 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 16:13:43,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 16:13:43,870 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_name [2021-12-21 16:13:43,870 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_name [2021-12-21 16:13:43,870 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2021-12-21 16:13:43,871 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2021-12-21 16:13:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:13:43,872 INFO L130 BoogieDeclarations]: Found specification of procedure at76_start_monitor [2021-12-21 16:13:43,873 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_start_monitor [2021-12-21 16:13:43,873 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_stop_queues [2021-12-21 16:13:43,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_stop_queues [2021-12-21 16:13:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-12-21 16:13:43,874 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-12-21 16:13:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:13:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-12-21 16:13:43,879 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-12-21 16:13:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:13:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-21 16:13:43,879 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-21 16:13:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-21 16:13:43,879 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-21 16:13:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-21 16:13:43,879 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-21 16:13:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-21 16:13:43,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-21 16:13:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure at76_configure_filter [2021-12-21 16:13:43,880 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_configure_filter [2021-12-21 16:13:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-21 16:13:43,880 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-21 16:13:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_work [2021-12-21 16:13:43,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_work [2021-12-21 16:13:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-12-21 16:13:43,880 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-12-21 16:13:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:13:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure at76_mac80211_tx [2021-12-21 16:13:43,881 INFO L138 BoogieDeclarations]: Found implementation of procedure at76_mac80211_tx [2021-12-21 16:13:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:13:43,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:13:43,881 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2021-12-21 16:13:43,881 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2021-12-21 16:13:44,526 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:13:44,527 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:13:44,687 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 16:13:51,904 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:13:51,920 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:13:51,920 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-21 16:13:51,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:13:51 BoogieIcfgContainer [2021-12-21 16:13:51,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:13:51,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:13:51,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:13:51,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:13:51,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:13:41" (1/3) ... [2021-12-21 16:13:51,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da51590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:13:51, skipping insertion in model container [2021-12-21 16:13:51,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:43" (2/3) ... [2021-12-21 16:13:51,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da51590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:13:51, skipping insertion in model container [2021-12-21 16:13:51,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:13:51" (3/3) ... [2021-12-21 16:13:51,929 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 [2021-12-21 16:13:51,932 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:13:51,933 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:13:51,971 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:13:51,980 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 [2021-12-21 16:13:51,980 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:13:52,014 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) [2021-12-21 16:13:52,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-21 16:13:52,024 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:13:52,025 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] [2021-12-21 16:13:52,025 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:13:52,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:13:52,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1941045880, now seen corresponding path program 1 times [2021-12-21 16:13:52,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:13:52,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167033016] [2021-12-21 16:13:52,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:13:52,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:13:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:52,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:13:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:52,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:13:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:52,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:13:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:52,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:13:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:52,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:13:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:52,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 16:13:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:52,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 16:13:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:52,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 16:13:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:52,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 16:13:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:52,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 16:13:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:52,732 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-12-21 16:13:52,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:13:52,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167033016] [2021-12-21 16:13:52,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167033016] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:13:52,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:13:52,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:13:52,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260263950] [2021-12-21 16:13:52,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:13:52,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:13:52,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:13:52,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:13:52,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:13:52,764 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) [2021-12-21 16:13:58,831 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 [] [2021-12-21 16:14:00,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:14:02,884 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:14:04,910 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 [] [2021-12-21 16:14:06,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:14:06,088 INFO L93 Difference]: Finished difference Result 4269 states and 6520 transitions. [2021-12-21 16:14:06,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:14:06,091 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 [2021-12-21 16:14:06,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:14:06,116 INFO L225 Difference]: With dead ends: 4269 [2021-12-21 16:14:06,116 INFO L226 Difference]: Without dead ends: 2916 [2021-12-21 16:14:06,126 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 [2021-12-21 16:14:06,128 INFO L933 BasicCegarLoop]: 2143 mSDtfsCounter, 2898 mSDsluCounter, 3484 mSDsCounter, 0 mSdLazyCounter, 2138 mSolverCounterSat, 1565 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3154 SdHoareTripleChecker+Valid, 5627 SdHoareTripleChecker+Invalid, 3707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1565 IncrementalHoareTripleChecker+Valid, 2138 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:14:06,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3154 Valid, 5627 Invalid, 3707 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1565 Valid, 2138 Invalid, 4 Unknown, 0 Unchecked, 13.0s Time] [2021-12-21 16:14:06,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2021-12-21 16:14:06,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2602. [2021-12-21 16:14:06,290 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) [2021-12-21 16:14:06,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3757 transitions. [2021-12-21 16:14:06,306 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3757 transitions. Word has length 80 [2021-12-21 16:14:06,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:14:06,307 INFO L470 AbstractCegarLoop]: Abstraction has 2602 states and 3757 transitions. [2021-12-21 16:14:06,307 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) [2021-12-21 16:14:06,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3757 transitions. [2021-12-21 16:14:06,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-21 16:14:06,315 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:14:06,316 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] [2021-12-21 16:14:06,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:14:06,318 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:14:06,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:14:06,319 INFO L85 PathProgramCache]: Analyzing trace with hash -227298957, now seen corresponding path program 1 times [2021-12-21 16:14:06,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:14:06,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708951283] [2021-12-21 16:14:06,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:06,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:14:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:06,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:06,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:06,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:14:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:06,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:14:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:06,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:14:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:06,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 16:14:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:06,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 16:14:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:06,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 16:14:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:06,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 16:14:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:06,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 16:14:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:06,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 16:14:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:06,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 16:14:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:06,798 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-21 16:14:06,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:14:06,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708951283] [2021-12-21 16:14:06,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708951283] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:14:06,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:14:06,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:14:06,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582288783] [2021-12-21 16:14:06,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:14:06,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:14:06,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:14:06,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:14:06,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:14:06,802 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) [2021-12-21 16:14:13,968 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 [] [2021-12-21 16:14:15,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:14:18,014 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:14:20,037 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 [] [2021-12-21 16:14:20,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:14:20,943 INFO L93 Difference]: Finished difference Result 8375 states and 12441 transitions. [2021-12-21 16:14:20,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 16:14:20,944 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 [2021-12-21 16:14:20,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:14:20,973 INFO L225 Difference]: With dead ends: 8375 [2021-12-21 16:14:20,973 INFO L226 Difference]: Without dead ends: 5787 [2021-12-21 16:14:20,983 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 [2021-12-21 16:14:20,986 INFO L933 BasicCegarLoop]: 2155 mSDtfsCounter, 2872 mSDsluCounter, 7339 mSDsCounter, 0 mSdLazyCounter, 3143 mSolverCounterSat, 1537 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3130 SdHoareTripleChecker+Valid, 9494 SdHoareTripleChecker+Invalid, 4684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1537 IncrementalHoareTripleChecker+Valid, 3143 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2021-12-21 16:14:20,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3130 Valid, 9494 Invalid, 4684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1537 Valid, 3143 Invalid, 4 Unknown, 0 Unchecked, 13.8s Time] [2021-12-21 16:14:20,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5787 states. [2021-12-21 16:14:21,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5787 to 5197. [2021-12-21 16:14:21,120 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) [2021-12-21 16:14:21,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 7517 transitions. [2021-12-21 16:14:21,146 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 7517 transitions. Word has length 96 [2021-12-21 16:14:21,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:14:21,148 INFO L470 AbstractCegarLoop]: Abstraction has 5197 states and 7517 transitions. [2021-12-21 16:14:21,148 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) [2021-12-21 16:14:21,148 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 7517 transitions. [2021-12-21 16:14:21,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-21 16:14:21,156 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:14:21,156 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] [2021-12-21 16:14:21,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:14:21,157 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:14:21,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:14:21,157 INFO L85 PathProgramCache]: Analyzing trace with hash 415887363, now seen corresponding path program 1 times [2021-12-21 16:14:21,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:14:21,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146701967] [2021-12-21 16:14:21,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:21,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:14:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:14:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:14:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:14:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 16:14:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 16:14:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 16:14:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 16:14:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 16:14:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 16:14:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 16:14:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 16:14:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 16:14:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 16:14:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-12-21 16:14:21,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:14:21,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146701967] [2021-12-21 16:14:21,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146701967] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:14:21,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:14:21,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:14:21,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975596260] [2021-12-21 16:14:21,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:14:21,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:14:21,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:14:21,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:14:21,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:14:21,554 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) [2021-12-21 16:14:27,232 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 [] [2021-12-21 16:14:29,269 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 [] [2021-12-21 16:14:31,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:14:31,064 INFO L93 Difference]: Finished difference Result 13329 states and 19600 transitions. [2021-12-21 16:14:31,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 16:14:31,064 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 [2021-12-21 16:14:31,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:14:31,100 INFO L225 Difference]: With dead ends: 13329 [2021-12-21 16:14:31,100 INFO L226 Difference]: Without dead ends: 8156 [2021-12-21 16:14:31,116 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 [2021-12-21 16:14:31,117 INFO L933 BasicCegarLoop]: 1952 mSDtfsCounter, 1270 mSDsluCounter, 4073 mSDsCounter, 0 mSdLazyCounter, 2744 mSolverCounterSat, 537 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 6025 SdHoareTripleChecker+Invalid, 3283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 2744 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:14:31,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1421 Valid, 6025 Invalid, 3283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 2744 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2021-12-21 16:14:31,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8156 states. [2021-12-21 16:14:31,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8156 to 7456. [2021-12-21 16:14:31,312 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) [2021-12-21 16:14:31,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 10707 transitions. [2021-12-21 16:14:31,333 INFO L78 Accepts]: Start accepts. Automaton has 7456 states and 10707 transitions. Word has length 144 [2021-12-21 16:14:31,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:14:31,334 INFO L470 AbstractCegarLoop]: Abstraction has 7456 states and 10707 transitions. [2021-12-21 16:14:31,344 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) [2021-12-21 16:14:31,345 INFO L276 IsEmpty]: Start isEmpty. Operand 7456 states and 10707 transitions. [2021-12-21 16:14:31,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-21 16:14:31,351 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:14:31,351 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] [2021-12-21 16:14:31,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 16:14:31,352 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:14:31,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:14:31,352 INFO L85 PathProgramCache]: Analyzing trace with hash -2082112872, now seen corresponding path program 1 times [2021-12-21 16:14:31,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:14:31,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686443943] [2021-12-21 16:14:31,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:31,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:14:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:14:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:14:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:14:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 16:14:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 16:14:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 16:14:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 16:14:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 16:14:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 16:14:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 16:14:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 16:14:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 16:14:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 16:14:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 16:14:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-21 16:14:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,776 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-12-21 16:14:31,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:14:31,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686443943] [2021-12-21 16:14:31,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686443943] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:14:31,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:14:31,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 16:14:31,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810659737] [2021-12-21 16:14:31,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:14:31,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 16:14:31,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:14:31,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 16:14:31,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:14:31,778 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) [2021-12-21 16:14:38,906 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 [] [2021-12-21 16:14:40,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:14:42,957 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:14:44,833 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:14:46,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:14:48,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:14:48,530 INFO L93 Difference]: Finished difference Result 19699 states and 28876 transitions. [2021-12-21 16:14:48,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 16:14:48,531 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 156 [2021-12-21 16:14:48,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:14:48,589 INFO L225 Difference]: With dead ends: 19699 [2021-12-21 16:14:48,589 INFO L226 Difference]: Without dead ends: 12278 [2021-12-21 16:14:48,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-12-21 16:14:48,613 INFO L933 BasicCegarLoop]: 2750 mSDtfsCounter, 2567 mSDsluCounter, 5131 mSDsCounter, 0 mSdLazyCounter, 3334 mSolverCounterSat, 1763 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2779 SdHoareTripleChecker+Valid, 7881 SdHoareTripleChecker+Invalid, 5101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1763 IncrementalHoareTripleChecker+Valid, 3334 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2021-12-21 16:14:48,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2779 Valid, 7881 Invalid, 5101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1763 Valid, 3334 Invalid, 4 Unknown, 0 Unchecked, 16.4s Time] [2021-12-21 16:14:48,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12278 states. [2021-12-21 16:14:48,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12278 to 10906. [2021-12-21 16:14:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10906 states, 8002 states have (on average 1.3759060234941265) internal successors, (11010), 8150 states have internal predecessors, (11010), 2278 states have call successors, (2278), 606 states have call predecessors, (2278), 625 states have return successors, (2324), 2277 states have call predecessors, (2324), 2277 states have call successors, (2324) [2021-12-21 16:14:48,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10906 states to 10906 states and 15612 transitions. [2021-12-21 16:14:48,947 INFO L78 Accepts]: Start accepts. Automaton has 10906 states and 15612 transitions. Word has length 156 [2021-12-21 16:14:48,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:14:48,947 INFO L470 AbstractCegarLoop]: Abstraction has 10906 states and 15612 transitions. [2021-12-21 16:14:48,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-12-21 16:14:48,948 INFO L276 IsEmpty]: Start isEmpty. Operand 10906 states and 15612 transitions. [2021-12-21 16:14:48,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-21 16:14:48,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:14:48,959 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:14:48,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 16:14:48,960 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:14:48,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:14:48,961 INFO L85 PathProgramCache]: Analyzing trace with hash 347899775, now seen corresponding path program 1 times [2021-12-21 16:14:48,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:14:48,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947379252] [2021-12-21 16:14:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:48,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:14:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat