./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.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 0a0b87150f68c4dfa6a57a3698556eda427efd851a248be648b2e5c8b3a3f4dd --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:40:45,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:40:45,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:40:45,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:40:45,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:40:45,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:40:45,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:40:45,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:40:45,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:40:45,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:40:45,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:40:45,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:40:45,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:40:45,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:40:45,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:40:45,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:40:45,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:40:45,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:40:45,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:40:45,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:40:45,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:40:45,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:40:45,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:40:45,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:40:45,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:40:45,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:40:45,423 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:40:45,424 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:40:45,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:40:45,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:40:45,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:40:45,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:40:45,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:40:45,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:40:45,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:40:45,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:40:45,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:40:45,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:40:45,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:40:45,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:40:45,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:40:45,432 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:40:45,454 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:40:45,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:40:45,455 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:40:45,455 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:40:45,456 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:40:45,456 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:40:45,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:40:45,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:40:45,456 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:40:45,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:40:45,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:40:45,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:40:45,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:40:45,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:40:45,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:40:45,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:40:45,458 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:40:45,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:40:45,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:40:45,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:40:45,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:40:45,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:40:45,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:40:45,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:40:45,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:40:45,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:40:45,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:40:45,460 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:40:45,460 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:40:45,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:40:45,460 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:40:45,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a0b87150f68c4dfa6a57a3698556eda427efd851a248be648b2e5c8b3a3f4dd [2021-12-14 17:40:45,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:40:45,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:40:45,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:40:45,674 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:40:45,674 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:40:45,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i [2021-12-14 17:40:45,748 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49d9fe64a/d2bdc7273aa74f8baa69c765696e294f/FLAGce3576ae6 [2021-12-14 17:40:46,385 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:40:46,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i [2021-12-14 17:40:46,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49d9fe64a/d2bdc7273aa74f8baa69c765696e294f/FLAGce3576ae6 [2021-12-14 17:40:46,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49d9fe64a/d2bdc7273aa74f8baa69c765696e294f [2021-12-14 17:40:46,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:40:46,779 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:40:46,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:40:46,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:40:46,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:40:46,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:40:46" (1/1) ... [2021-12-14 17:40:46,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@130732a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:46, skipping insertion in model container [2021-12-14 17:40:46,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:40:46" (1/1) ... [2021-12-14 17:40:46,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:40:46,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:40:47,383 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i[156940,156953] [2021-12-14 17:40:48,185 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:40:48,213 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:40:48,336 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i[156940,156953] [2021-12-14 17:40:48,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:40:48,544 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:40:48,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:48 WrapperNode [2021-12-14 17:40:48,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:40:48,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:40:48,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:40:48,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:40:48,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:48" (1/1) ... [2021-12-14 17:40:48,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:48" (1/1) ... [2021-12-14 17:40:48,727 INFO L137 Inliner]: procedures = 220, calls = 1907, calls flagged for inlining = 76, calls inlined = 76, statements flattened = 3491 [2021-12-14 17:40:48,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:40:48,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:40:48,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:40:48,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:40:48,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:48" (1/1) ... [2021-12-14 17:40:48,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:48" (1/1) ... [2021-12-14 17:40:48,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:48" (1/1) ... [2021-12-14 17:40:48,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:48" (1/1) ... [2021-12-14 17:40:48,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:48" (1/1) ... [2021-12-14 17:40:48,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:48" (1/1) ... [2021-12-14 17:40:48,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:48" (1/1) ... [2021-12-14 17:40:48,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:40:48,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:40:48,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:40:48,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:40:48,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:48" (1/1) ... [2021-12-14 17:40:48,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:40:48,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:40:48,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:40:48,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:40:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ctrl_complete [2021-12-14 17:40:49,014 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ctrl_complete [2021-12-14 17:40:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure dout_reset [2021-12-14 17:40:49,014 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_reset [2021-12-14 17:40:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_isocpipes [2021-12-14 17:40:49,014 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_isocpipes [2021-12-14 17:40:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:40:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:40:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure __cpu_to_le16p [2021-12-14 17:40:49,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __cpu_to_le16p [2021-12-14 17:40:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 17:40:49,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 17:40:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-12-14 17:40:49,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-12-14 17:40:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure usb_altnum_to_altsetting [2021-12-14 17:40:49,016 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_altnum_to_altsetting [2021-12-14 17:40:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:40:49,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:40:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_st5481 [2021-12-14 17:40:49,016 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_st5481 [2021-12-14 17:40:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-12-14 17:40:49,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-12-14 17:40:49,016 INFO L130 BoogieDeclarations]: Found specification of procedure usb_next_ctrl_msg [2021-12-14 17:40:49,017 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_next_ctrl_msg [2021-12-14 17:40:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_usb [2021-12-14 17:40:49,017 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_usb [2021-12-14 17:40:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure usb_b_out [2021-12-14 17:40:49,017 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_b_out [2021-12-14 17:40:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_usb_device_ctrl_msg [2021-12-14 17:40:49,017 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_usb_device_ctrl_msg [2021-12-14 17:40:49,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:40:49,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:40:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure FsmEvent [2021-12-14 17:40:49,018 INFO L138 BoogieDeclarations]: Found implementation of procedure FsmEvent [2021-12-14 17:40:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:40:49,018 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:40:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure led_blink [2021-12-14 17:40:49,019 INFO L138 BoogieDeclarations]: Found implementation of procedure led_blink [2021-12-14 17:40:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_in_mode [2021-12-14 17:40:49,019 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_in_mode [2021-12-14 17:40:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2021-12-14 17:40:49,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2021-12-14 17:40:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_start_rcv [2021-12-14 17:40:49,019 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_start_rcv [2021-12-14 17:40:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 17:40:49,020 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 17:40:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_23 [2021-12-14 17:40:49,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_23 [2021-12-14 17:40:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_24 [2021-12-14 17:40:49,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_24 [2021-12-14 17:40:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_2 [2021-12-14 17:40:49,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_2 [2021-12-14 17:40:49,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2021-12-14 17:40:49,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2021-12-14 17:40:49,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_25 [2021-12-14 17:40:49,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_25 [2021-12-14 17:40:49,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:40:49,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_27 [2021-12-14 17:40:49,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_27 [2021-12-14 17:40:49,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_28 [2021-12-14 17:40:49,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_28 [2021-12-14 17:40:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2021-12-14 17:40:49,024 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2021-12-14 17:40:49,024 INFO L130 BoogieDeclarations]: Found specification of procedure ph_connect [2021-12-14 17:40:49,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ph_connect [2021-12-14 17:40:49,025 INFO L130 BoogieDeclarations]: Found specification of procedure st5481B_mode [2021-12-14 17:40:49,025 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481B_mode [2021-12-14 17:40:49,025 INFO L130 BoogieDeclarations]: Found specification of procedure B_L1L2 [2021-12-14 17:40:49,025 INFO L138 BoogieDeclarations]: Found implementation of procedure B_L1L2 [2021-12-14 17:40:49,025 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~VOID [2021-12-14 17:40:49,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~VOID [2021-12-14 17:40:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_10 [2021-12-14 17:40:49,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_10 [2021-12-14 17:40:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:40:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_11 [2021-12-14 17:40:49,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_11 [2021-12-14 17:40:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2021-12-14 17:40:49,027 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2021-12-14 17:40:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_setup_isocpipes [2021-12-14 17:40:49,027 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_setup_isocpipes [2021-12-14 17:40:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure isdnhdlc_out_init [2021-12-14 17:40:49,027 INFO L138 BoogieDeclarations]: Found implementation of procedure isdnhdlc_out_init [2021-12-14 17:40:49,027 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 17:40:49,027 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 17:40:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure ph_disconnect [2021-12-14 17:40:49,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ph_disconnect [2021-12-14 17:40:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:40:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f6 [2021-12-14 17:40:49,028 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f6 [2021-12-14 17:40:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:40:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f7 [2021-12-14 17:40:49,029 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f7 [2021-12-14 17:40:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f8 [2021-12-14 17:40:49,029 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f8 [2021-12-14 17:40:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_b_l2l1 [2021-12-14 17:40:49,030 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_b_l2l1 [2021-12-14 17:40:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f3 [2021-12-14 17:40:49,030 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f3 [2021-12-14 17:40:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure dout_short_fifo [2021-12-14 17:40:49,031 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_short_fifo [2021-12-14 17:40:49,031 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_setup_b [2021-12-14 17:40:49,031 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_setup_b [2021-12-14 17:40:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:40:49,032 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:40:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-14 17:40:49,032 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-14 17:40:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure usb_in_complete [2021-12-14 17:40:49,032 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_in_complete [2021-12-14 17:40:49,032 INFO L130 BoogieDeclarations]: Found specification of procedure usb_d_out_complete [2021-12-14 17:40:49,032 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_d_out_complete [2021-12-14 17:40:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure st5481B_start_xfer [2021-12-14 17:40:49,033 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481B_start_xfer [2021-12-14 17:40:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_usb_pipe_reset [2021-12-14 17:40:49,033 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_usb_pipe_reset [2021-12-14 17:40:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:40:49,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-14 17:40:49,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-14 17:40:49,034 INFO L130 BoogieDeclarations]: Found specification of procedure dout_check_busy [2021-12-14 17:40:49,034 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_check_busy [2021-12-14 17:40:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_b_out [2021-12-14 17:40:49,036 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_b_out [2021-12-14 17:40:49,036 INFO L130 BoogieDeclarations]: Found specification of procedure FsmFree [2021-12-14 17:40:49,037 INFO L138 BoogieDeclarations]: Found implementation of procedure FsmFree [2021-12-14 17:40:49,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:40:49,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:40:49,038 INFO L130 BoogieDeclarations]: Found specification of procedure isdnhdlc_encode [2021-12-14 17:40:49,038 INFO L138 BoogieDeclarations]: Found implementation of procedure isdnhdlc_encode [2021-12-14 17:40:49,038 INFO L130 BoogieDeclarations]: Found specification of procedure usb_d_out [2021-12-14 17:40:49,042 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_d_out [2021-12-14 17:40:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:40:49,042 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:40:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-14 17:40:49,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-14 17:40:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-14 17:40:49,042 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-14 17:40:49,042 INFO L130 BoogieDeclarations]: Found specification of procedure dout_long_den [2021-12-14 17:40:49,042 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_long_den [2021-12-14 17:40:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-14 17:40:49,043 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-14 17:40:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:40:49,043 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:40:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure dout_stop [2021-12-14 17:40:49,043 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_stop [2021-12-14 17:40:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure dout_underrun [2021-12-14 17:40:49,043 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_underrun [2021-12-14 17:40:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:40:49,043 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-12-14 17:40:49,044 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-12-14 17:40:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_in [2021-12-14 17:40:49,044 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_in [2021-12-14 17:40:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:40:49,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:40:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_31 [2021-12-14 17:40:49,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_31 [2021-12-14 17:40:49,044 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_d_exit [2021-12-14 17:40:49,045 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_d_exit [2021-12-14 17:40:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:40:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure dump_iso_packet___0 [2021-12-14 17:40:49,045 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_iso_packet___0 [2021-12-14 17:40:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ctrl_msg [2021-12-14 17:40:49,045 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ctrl_msg [2021-12-14 17:40:49,045 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-14 17:40:49,046 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-14 17:40:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-12-14 17:40:49,046 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-12-14 17:40:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:40:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-14 17:40:49,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-14 17:40:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-14 17:40:49,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-14 17:40:49,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:40:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_b [2021-12-14 17:40:49,047 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_b [2021-12-14 17:40:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure dump_packet [2021-12-14 17:40:49,047 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_packet [2021-12-14 17:40:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_d [2021-12-14 17:40:49,047 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_d [2021-12-14 17:40:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:40:49,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:40:49,047 INFO L130 BoogieDeclarations]: Found specification of procedure l1_activate [2021-12-14 17:40:49,047 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_activate [2021-12-14 17:40:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure FsmNew [2021-12-14 17:40:49,048 INFO L138 BoogieDeclarations]: Found implementation of procedure FsmNew [2021-12-14 17:40:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure l1_timer3 [2021-12-14 17:40:49,048 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_timer3 [2021-12-14 17:40:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_stop [2021-12-14 17:40:49,048 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_stop [2021-12-14 17:40:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure dout_long_enable_fifo [2021-12-14 17:40:49,048 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_long_enable_fifo [2021-12-14 17:40:49,048 INFO L130 BoogieDeclarations]: Found specification of procedure usb_b_out_complete [2021-12-14 17:40:49,049 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_b_out_complete [2021-12-14 17:40:49,049 INFO L130 BoogieDeclarations]: Found specification of procedure usb_int_complete [2021-12-14 17:40:49,050 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_int_complete [2021-12-14 17:40:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_setup_in [2021-12-14 17:40:49,050 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_setup_in [2021-12-14 17:40:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure D_L1L2 [2021-12-14 17:40:49,050 INFO L138 BoogieDeclarations]: Found implementation of procedure D_L1L2 [2021-12-14 17:40:49,050 INFO L130 BoogieDeclarations]: Found specification of procedure dout_complete [2021-12-14 17:40:49,050 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_complete [2021-12-14 17:40:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure FsmChangeState [2021-12-14 17:40:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure FsmChangeState [2021-12-14 17:40:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_ph_command [2021-12-14 17:40:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_ph_command [2021-12-14 17:40:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure dout_start_xmit [2021-12-14 17:40:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_start_xmit [2021-12-14 17:40:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_d_out [2021-12-14 17:40:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_d_out [2021-12-14 17:40:49,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-12-14 17:40:49,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-12-14 17:40:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:40:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2021-12-14 17:40:49,052 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2021-12-14 17:40:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure get_buf_nr [2021-12-14 17:40:49,052 INFO L138 BoogieDeclarations]: Found implementation of procedure get_buf_nr [2021-12-14 17:40:49,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:40:49,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:40:49,589 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:40:49,593 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:40:49,735 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 17:40:54,432 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2021-12-14 17:40:58,764 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:40:58,806 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:40:58,807 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 17:40:58,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:40:58 BoogieIcfgContainer [2021-12-14 17:40:58,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:40:58,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:40:58,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:40:58,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:40:58,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:40:46" (1/3) ... [2021-12-14 17:40:58,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a3cd27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:40:58, skipping insertion in model container [2021-12-14 17:40:58,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:40:48" (2/3) ... [2021-12-14 17:40:58,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a3cd27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:40:58, skipping insertion in model container [2021-12-14 17:40:58,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:40:58" (3/3) ... [2021-12-14 17:40:58,818 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i [2021-12-14 17:40:58,827 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:40:58,827 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:40:58,866 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:40:58,873 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:40:58,873 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:40:58,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 1266 states, 884 states have (on average 1.3608597285067874) internal successors, (1203), 950 states have internal predecessors, (1203), 283 states have call successors, (283), 100 states have call predecessors, (283), 98 states have return successors, (278), 254 states have call predecessors, (278), 278 states have call successors, (278) [2021-12-14 17:40:58,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-14 17:40:58,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:40:58,933 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:40:58,933 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:40:58,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:40:58,947 INFO L85 PathProgramCache]: Analyzing trace with hash 517411944, now seen corresponding path program 1 times [2021-12-14 17:40:58,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:40:58,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753125714] [2021-12-14 17:40:58,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:40:58,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:40:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:59,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:40:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:59,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 17:40:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:59,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:40:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:59,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:40:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:40:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 17:40:59,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:40:59,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753125714] [2021-12-14 17:40:59,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753125714] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:40:59,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:40:59,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:40:59,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052510784] [2021-12-14 17:40:59,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:40:59,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:40:59,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:40:59,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:40:59,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:40:59,549 INFO L87 Difference]: Start difference. First operand has 1266 states, 884 states have (on average 1.3608597285067874) internal successors, (1203), 950 states have internal predecessors, (1203), 283 states have call successors, (283), 100 states have call predecessors, (283), 98 states have return successors, (278), 254 states have call predecessors, (278), 278 states have call successors, (278) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:41:05,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:41:05,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:41:05,897 INFO L93 Difference]: Finished difference Result 4074 states and 6055 transitions. [2021-12-14 17:41:05,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:41:05,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2021-12-14 17:41:05,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:41:05,931 INFO L225 Difference]: With dead ends: 4074 [2021-12-14 17:41:05,932 INFO L226 Difference]: Without dead ends: 2789 [2021-12-14 17:41:05,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:41:05,943 INFO L933 BasicCegarLoop]: 1838 mSDtfsCounter, 2665 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 987 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2824 SdHoareTripleChecker+Valid, 3956 SdHoareTripleChecker+Invalid, 2248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 987 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:41:05,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2824 Valid, 3956 Invalid, 2248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [987 Valid, 1260 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-12-14 17:41:05,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2021-12-14 17:41:06,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2451. [2021-12-14 17:41:06,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2451 states, 1715 states have (on average 1.3521865889212827) internal successors, (2319), 1825 states have internal predecessors, (2319), 542 states have call successors, (542), 194 states have call predecessors, (542), 193 states have return successors, (537), 489 states have call predecessors, (537), 537 states have call successors, (537) [2021-12-14 17:41:06,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 3398 transitions. [2021-12-14 17:41:06,077 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 3398 transitions. Word has length 33 [2021-12-14 17:41:06,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:41:06,078 INFO L470 AbstractCegarLoop]: Abstraction has 2451 states and 3398 transitions. [2021-12-14 17:41:06,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-14 17:41:06,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 3398 transitions. [2021-12-14 17:41:06,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-14 17:41:06,080 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:41:06,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:41:06,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:41:06,080 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:41:06,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:41:06,081 INFO L85 PathProgramCache]: Analyzing trace with hash -637694461, now seen corresponding path program 1 times [2021-12-14 17:41:06,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:41:06,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284424234] [2021-12-14 17:41:06,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:41:06,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:41:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:06,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:41:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:06,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:41:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:06,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:41:06,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:41:06,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284424234] [2021-12-14 17:41:06,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284424234] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:41:06,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:41:06,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:41:06,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82945753] [2021-12-14 17:41:06,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:41:06,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:41:06,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:41:06,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:41:06,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:41:06,340 INFO L87 Difference]: Start difference. First operand 2451 states and 3398 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 17:41:12,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:41:14,259 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:41:14,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:41:14,650 INFO L93 Difference]: Finished difference Result 5444 states and 7661 transitions. [2021-12-14 17:41:14,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 17:41:14,651 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2021-12-14 17:41:14,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:41:14,665 INFO L225 Difference]: With dead ends: 5444 [2021-12-14 17:41:14,665 INFO L226 Difference]: Without dead ends: 3005 [2021-12-14 17:41:14,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-12-14 17:41:14,673 INFO L933 BasicCegarLoop]: 1838 mSDtfsCounter, 1044 mSDsluCounter, 8792 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 492 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 10630 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:41:14,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 10630 Invalid, 2694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 2200 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2021-12-14 17:41:14,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2021-12-14 17:41:14,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 2453. [2021-12-14 17:41:14,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2453 states, 1717 states have (on average 1.351193942923704) internal successors, (2320), 1827 states have internal predecessors, (2320), 542 states have call successors, (542), 194 states have call predecessors, (542), 193 states have return successors, (537), 489 states have call predecessors, (537), 537 states have call successors, (537) [2021-12-14 17:41:14,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 3399 transitions. [2021-12-14 17:41:14,750 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 3399 transitions. Word has length 33 [2021-12-14 17:41:14,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:41:14,750 INFO L470 AbstractCegarLoop]: Abstraction has 2453 states and 3399 transitions. [2021-12-14 17:41:14,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 17:41:14,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 3399 transitions. [2021-12-14 17:41:14,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-14 17:41:14,752 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:41:14,752 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:41:14,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:41:14,752 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:41:14,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:41:14,753 INFO L85 PathProgramCache]: Analyzing trace with hash -580436159, now seen corresponding path program 1 times [2021-12-14 17:41:14,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:41:14,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588975556] [2021-12-14 17:41:14,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:41:14,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:41:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:14,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:41:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:14,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:41:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:14,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:41:14,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:41:14,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588975556] [2021-12-14 17:41:14,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588975556] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:41:14,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:41:14,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:41:14,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174513430] [2021-12-14 17:41:14,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:41:14,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:41:14,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:41:14,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:41:14,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:41:14,957 INFO L87 Difference]: Start difference. First operand 2453 states and 3399 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 17:41:20,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:41:21,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:41:21,854 INFO L93 Difference]: Finished difference Result 8008 states and 12164 transitions. [2021-12-14 17:41:21,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:41:21,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2021-12-14 17:41:21,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:41:21,894 INFO L225 Difference]: With dead ends: 8008 [2021-12-14 17:41:21,895 INFO L226 Difference]: Without dead ends: 5567 [2021-12-14 17:41:21,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:41:21,914 INFO L933 BasicCegarLoop]: 2021 mSDtfsCounter, 2797 mSDsluCounter, 2175 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 1018 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2920 SdHoareTripleChecker+Valid, 4196 SdHoareTripleChecker+Invalid, 2325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1018 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:41:21,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2920 Valid, 4196 Invalid, 2325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1018 Valid, 1306 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2021-12-14 17:41:21,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5567 states. [2021-12-14 17:41:22,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5567 to 5205. [2021-12-14 17:41:22,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5205 states, 3616 states have (on average 1.3393252212389382) internal successors, (4843), 3856 states have internal predecessors, (4843), 1115 states have call successors, (1115), 386 states have call predecessors, (1115), 473 states have return successors, (1644), 1070 states have call predecessors, (1644), 1110 states have call successors, (1644) [2021-12-14 17:41:22,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5205 states to 5205 states and 7602 transitions. [2021-12-14 17:41:22,208 INFO L78 Accepts]: Start accepts. Automaton has 5205 states and 7602 transitions. Word has length 33 [2021-12-14 17:41:22,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:41:22,209 INFO L470 AbstractCegarLoop]: Abstraction has 5205 states and 7602 transitions. [2021-12-14 17:41:22,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 17:41:22,209 INFO L276 IsEmpty]: Start isEmpty. Operand 5205 states and 7602 transitions. [2021-12-14 17:41:22,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-14 17:41:22,214 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:41:22,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:41:22,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:41:22,214 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:41:22,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:41:22,215 INFO L85 PathProgramCache]: Analyzing trace with hash -814198283, now seen corresponding path program 1 times [2021-12-14 17:41:22,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:41:22,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664955754] [2021-12-14 17:41:22,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:41:22,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:41:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:22,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:41:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:22,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:41:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:22,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:41:22,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:41:22,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664955754] [2021-12-14 17:41:22,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664955754] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:41:22,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:41:22,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:41:22,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196955352] [2021-12-14 17:41:22,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:41:22,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:41:22,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:41:22,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:41:22,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:41:22,388 INFO L87 Difference]: Start difference. First operand 5205 states and 7602 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 17:41:26,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:41:26,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:41:26,885 INFO L93 Difference]: Finished difference Result 5559 states and 8181 transitions. [2021-12-14 17:41:26,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:41:26,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2021-12-14 17:41:26,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:41:26,923 INFO L225 Difference]: With dead ends: 5559 [2021-12-14 17:41:26,923 INFO L226 Difference]: Without dead ends: 5556 [2021-12-14 17:41:26,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:41:26,975 INFO L933 BasicCegarLoop]: 1593 mSDtfsCounter, 2114 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 643 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 2160 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:41:26,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2225 Valid, 2160 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 636 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2021-12-14 17:41:26,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5556 states. [2021-12-14 17:41:27,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5556 to 5204. [2021-12-14 17:41:27,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5204 states, 3616 states have (on average 1.3390486725663717) internal successors, (4842), 3855 states have internal predecessors, (4842), 1114 states have call successors, (1114), 386 states have call predecessors, (1114), 473 states have return successors, (1644), 1070 states have call predecessors, (1644), 1110 states have call successors, (1644) [2021-12-14 17:41:27,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5204 states to 5204 states and 7600 transitions. [2021-12-14 17:41:27,223 INFO L78 Accepts]: Start accepts. Automaton has 5204 states and 7600 transitions. Word has length 34 [2021-12-14 17:41:27,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:41:27,224 INFO L470 AbstractCegarLoop]: Abstraction has 5204 states and 7600 transitions. [2021-12-14 17:41:27,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 17:41:27,225 INFO L276 IsEmpty]: Start isEmpty. Operand 5204 states and 7600 transitions. [2021-12-14 17:41:27,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-14 17:41:27,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:41:27,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:41:27,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:41:27,229 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:41:27,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:41:27,230 INFO L85 PathProgramCache]: Analyzing trace with hash 529115332, now seen corresponding path program 1 times [2021-12-14 17:41:27,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:41:27,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063025744] [2021-12-14 17:41:27,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:41:27,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:41:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:27,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:41:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:27,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:41:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:41:27,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:41:27,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063025744] [2021-12-14 17:41:27,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063025744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:41:27,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:41:27,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:41:27,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292620604] [2021-12-14 17:41:27,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:41:27,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:41:27,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:41:27,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:41:27,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:41:27,392 INFO L87 Difference]: Start difference. First operand 5204 states and 7600 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 17:41:31,550 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:41:31,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:41:31,883 INFO L93 Difference]: Finished difference Result 5558 states and 8179 transitions. [2021-12-14 17:41:31,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:41:31,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2021-12-14 17:41:31,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:41:31,908 INFO L225 Difference]: With dead ends: 5558 [2021-12-14 17:41:31,908 INFO L226 Difference]: Without dead ends: 5555 [2021-12-14 17:41:31,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:41:31,912 INFO L933 BasicCegarLoop]: 1594 mSDtfsCounter, 2109 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2219 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:41:31,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2219 Valid, 2161 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-14 17:41:31,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5555 states. [2021-12-14 17:41:32,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5555 to 5203. [2021-12-14 17:41:32,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 3616 states have (on average 1.3387721238938053) internal successors, (4841), 3854 states have internal predecessors, (4841), 1113 states have call successors, (1113), 386 states have call predecessors, (1113), 473 states have return successors, (1644), 1070 states have call predecessors, (1644), 1110 states have call successors, (1644) [2021-12-14 17:41:32,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 7598 transitions. [2021-12-14 17:41:32,074 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 7598 transitions. Word has length 35 [2021-12-14 17:41:32,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:41:32,075 INFO L470 AbstractCegarLoop]: Abstraction has 5203 states and 7598 transitions. [2021-12-14 17:41:32,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 17:41:32,075 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 7598 transitions. [2021-12-14 17:41:32,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-14 17:41:32,076 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:41:32,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:41:32,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:41:32,077 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:41:32,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:41:32,078 INFO L85 PathProgramCache]: Analyzing trace with hash -777830696, now seen corresponding path program 1 times [2021-12-14 17:41:32,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:41:32,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655093081] [2021-12-14 17:41:32,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:41:32,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:41:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:32,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:41:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:32,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:41:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:41:32,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:41:32,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655093081] [2021-12-14 17:41:32,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655093081] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:41:32,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:41:32,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:41:32,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922499839] [2021-12-14 17:41:32,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:41:32,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:41:32,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:41:32,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:41:32,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:41:32,202 INFO L87 Difference]: Start difference. First operand 5203 states and 7598 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 17:41:36,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:41:36,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:41:36,780 INFO L93 Difference]: Finished difference Result 5557 states and 8177 transitions. [2021-12-14 17:41:36,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:41:36,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2021-12-14 17:41:36,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:41:36,802 INFO L225 Difference]: With dead ends: 5557 [2021-12-14 17:41:36,802 INFO L226 Difference]: Without dead ends: 5554 [2021-12-14 17:41:36,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:41:36,805 INFO L933 BasicCegarLoop]: 1594 mSDtfsCounter, 2105 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 641 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2213 SdHoareTripleChecker+Valid, 2162 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:41:36,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2213 Valid, 2162 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [641 Valid, 636 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-12-14 17:41:36,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5554 states. [2021-12-14 17:41:36,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5554 to 5202. [2021-12-14 17:41:36,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5202 states, 3616 states have (on average 1.3384955752212389) internal successors, (4840), 3853 states have internal predecessors, (4840), 1112 states have call successors, (1112), 386 states have call predecessors, (1112), 473 states have return successors, (1644), 1070 states have call predecessors, (1644), 1110 states have call successors, (1644) [2021-12-14 17:41:36,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5202 states to 5202 states and 7596 transitions. [2021-12-14 17:41:36,954 INFO L78 Accepts]: Start accepts. Automaton has 5202 states and 7596 transitions. Word has length 36 [2021-12-14 17:41:36,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:41:36,955 INFO L470 AbstractCegarLoop]: Abstraction has 5202 states and 7596 transitions. [2021-12-14 17:41:36,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 17:41:36,955 INFO L276 IsEmpty]: Start isEmpty. Operand 5202 states and 7596 transitions. [2021-12-14 17:41:36,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-14 17:41:36,956 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:41:36,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:41:36,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 17:41:36,956 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:41:36,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:41:36,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1656520263, now seen corresponding path program 1 times [2021-12-14 17:41:36,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:41:36,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983857562] [2021-12-14 17:41:36,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:41:36,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:41:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:37,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:41:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:37,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:41:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:37,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:41:37,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:41:37,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983857562] [2021-12-14 17:41:37,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983857562] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:41:37,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:41:37,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:41:37,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115003332] [2021-12-14 17:41:37,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:41:37,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:41:37,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:41:37,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:41:37,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:41:37,077 INFO L87 Difference]: Start difference. First operand 5202 states and 7596 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 17:41:41,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:41:42,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:41:42,022 INFO L93 Difference]: Finished difference Result 5556 states and 8175 transitions. [2021-12-14 17:41:42,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:41:42,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2021-12-14 17:41:42,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:41:42,051 INFO L225 Difference]: With dead ends: 5556 [2021-12-14 17:41:42,051 INFO L226 Difference]: Without dead ends: 5527 [2021-12-14 17:41:42,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:41:42,058 INFO L933 BasicCegarLoop]: 1590 mSDtfsCounter, 2104 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 634 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2215 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:41:42,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2215 Valid, 2155 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 638 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-12-14 17:41:42,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5527 states. [2021-12-14 17:41:42,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5527 to 5175. [2021-12-14 17:41:42,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 3599 states have (on average 1.3384273409280356) internal successors, (4817), 3834 states have internal predecessors, (4817), 1105 states have call successors, (1105), 383 states have call predecessors, (1105), 470 states have return successors, (1638), 1064 states have call predecessors, (1638), 1104 states have call successors, (1638) [2021-12-14 17:41:42,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 7560 transitions. [2021-12-14 17:41:42,236 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 7560 transitions. Word has length 37 [2021-12-14 17:41:42,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:41:42,236 INFO L470 AbstractCegarLoop]: Abstraction has 5175 states and 7560 transitions. [2021-12-14 17:41:42,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 17:41:42,237 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 7560 transitions. [2021-12-14 17:41:42,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-14 17:41:42,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:41:42,245 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-14 17:41:42,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 17:41:42,245 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:41:42,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:41:42,246 INFO L85 PathProgramCache]: Analyzing trace with hash 158448476, now seen corresponding path program 1 times [2021-12-14 17:41:42,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:41:42,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941248105] [2021-12-14 17:41:42,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:41:42,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:41:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:42,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:41:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:42,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:41:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:42,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 17:41:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:42,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:41:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:42,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:41:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:42,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:41:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:42,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 17:41:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:42,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:41:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:42,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:41:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:42,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:41:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:42,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 17:41:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 17:41:42,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:41:42,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941248105] [2021-12-14 17:41:42,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941248105] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:41:42,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:41:42,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:41:42,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530178373] [2021-12-14 17:41:42,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:41:42,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:41:42,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:41:42,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:41:42,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:41:42,489 INFO L87 Difference]: Start difference. First operand 5175 states and 7560 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 17:41:47,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:41:49,452 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:41:49,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:41:49,883 INFO L93 Difference]: Finished difference Result 8374 states and 12311 transitions. [2021-12-14 17:41:49,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:41:49,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2021-12-14 17:41:49,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:41:49,921 INFO L225 Difference]: With dead ends: 8374 [2021-12-14 17:41:49,922 INFO L226 Difference]: Without dead ends: 3211 [2021-12-14 17:41:49,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:41:49,941 INFO L933 BasicCegarLoop]: 1673 mSDtfsCounter, 2036 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 1377 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2051 SdHoareTripleChecker+Valid, 4736 SdHoareTripleChecker+Invalid, 2589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1377 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:41:49,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2051 Valid, 4736 Invalid, 2589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1377 Valid, 1210 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2021-12-14 17:41:49,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2021-12-14 17:41:50,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 2805. [2021-12-14 17:41:50,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 1971 states have (on average 1.3363774733637748) internal successors, (2634), 2091 states have internal predecessors, (2634), 577 states have call successors, (577), 202 states have call predecessors, (577), 256 states have return successors, (884), 565 states have call predecessors, (884), 576 states have call successors, (884) [2021-12-14 17:41:50,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 4095 transitions. [2021-12-14 17:41:50,130 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 4095 transitions. Word has length 113 [2021-12-14 17:41:50,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:41:50,141 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 4095 transitions. [2021-12-14 17:41:50,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 17:41:50,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 4095 transitions. [2021-12-14 17:41:50,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-14 17:41:50,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:41:50,146 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 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] [2021-12-14 17:41:50,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 17:41:50,146 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:41:50,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:41:50,147 INFO L85 PathProgramCache]: Analyzing trace with hash 382893013, now seen corresponding path program 1 times [2021-12-14 17:41:50,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:41:50,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810646705] [2021-12-14 17:41:50,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:41:50,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:41:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:50,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:41:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:50,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 17:41:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:50,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:41:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:50,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:41:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:50,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:41:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:50,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:41:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:50,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 17:41:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:50,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:41:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:50,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:41:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:50,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:41:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:50,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 17:41:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:50,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-14 17:41:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:50,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:41:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:50,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:41:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:50,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 17:41:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:50,410 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-14 17:41:50,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:41:50,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810646705] [2021-12-14 17:41:50,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810646705] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:41:50,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:41:50,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:41:50,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533515971] [2021-12-14 17:41:50,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:41:50,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:41:50,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:41:50,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:41:50,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:41:50,413 INFO L87 Difference]: Start difference. First operand 2805 states and 4095 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15)