./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.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 66b2f104726c03e3846e38f6b09c6a45d6c8d058156e96895db9342600740310 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 18:19:56,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 18:19:56,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 18:19:56,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 18:19:56,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 18:19:56,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 18:19:56,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 18:19:56,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 18:19:56,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 18:19:56,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 18:19:56,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 18:19:56,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 18:19:56,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 18:19:56,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 18:19:56,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 18:19:56,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 18:19:56,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 18:19:56,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 18:19:56,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 18:19:56,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 18:19:56,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 18:19:56,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 18:19:56,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 18:19:56,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 18:19:56,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 18:19:56,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 18:19:56,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 18:19:56,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 18:19:56,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 18:19:56,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 18:19:56,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 18:19:56,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 18:19:56,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 18:19:56,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 18:19:56,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 18:19:56,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 18:19:56,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 18:19:56,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 18:19:56,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 18:19:56,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 18:19:56,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 18:19:56,730 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 18:19:56,758 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 18:19:56,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 18:19:56,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 18:19:56,759 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 18:19:56,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 18:19:56,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 18:19:56,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 18:19:56,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 18:19:56,760 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 18:19:56,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 18:19:56,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 18:19:56,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 18:19:56,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 18:19:56,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 18:19:56,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 18:19:56,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 18:19:56,761 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 18:19:56,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 18:19:56,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 18:19:56,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 18:19:56,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 18:19:56,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:19:56,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 18:19:56,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 18:19:56,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 18:19:56,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 18:19:56,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 18:19:56,762 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 18:19:56,763 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 18:19:56,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 18:19:56,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 18:19:56,763 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66b2f104726c03e3846e38f6b09c6a45d6c8d058156e96895db9342600740310 [2021-12-14 18:19:56,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 18:19:56,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 18:19:56,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 18:19:56,987 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 18:19:56,987 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 18:19:56,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2021-12-14 18:19:57,027 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/112c41655/1e9f19b139af44b6b6c58a96065d897b/FLAG1bcfa1786 [2021-12-14 18:19:57,604 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 18:19:57,604 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2021-12-14 18:19:57,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/112c41655/1e9f19b139af44b6b6c58a96065d897b/FLAG1bcfa1786 [2021-12-14 18:19:57,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/112c41655/1e9f19b139af44b6b6c58a96065d897b [2021-12-14 18:19:57,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 18:19:57,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 18:19:57,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 18:19:57,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 18:19:57,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 18:19:57,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:19:57" (1/1) ... [2021-12-14 18:19:57,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37fbd22c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:57, skipping insertion in model container [2021-12-14 18:19:57,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:19:57" (1/1) ... [2021-12-14 18:19:57,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 18:19:57,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 18:19:58,961 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i[287455,287468] [2021-12-14 18:19:59,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:19:59,033 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 18:19:59,442 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i[287455,287468] [2021-12-14 18:19:59,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:19:59,537 INFO L208 MainTranslator]: Completed translation [2021-12-14 18:19:59,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:59 WrapperNode [2021-12-14 18:19:59,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 18:19:59,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 18:19:59,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 18:19:59,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 18:19:59,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:59" (1/1) ... [2021-12-14 18:19:59,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:59" (1/1) ... [2021-12-14 18:19:59,736 INFO L137 Inliner]: procedures = 274, calls = 2121, calls flagged for inlining = 123, calls inlined = 120, statements flattened = 4342 [2021-12-14 18:19:59,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 18:19:59,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 18:19:59,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 18:19:59,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 18:19:59,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:59" (1/1) ... [2021-12-14 18:19:59,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:59" (1/1) ... [2021-12-14 18:19:59,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:59" (1/1) ... [2021-12-14 18:19:59,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:59" (1/1) ... [2021-12-14 18:19:59,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:59" (1/1) ... [2021-12-14 18:19:59,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:59" (1/1) ... [2021-12-14 18:19:59,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:59" (1/1) ... [2021-12-14 18:19:59,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 18:19:59,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 18:19:59,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 18:19:59,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 18:19:59,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:59" (1/1) ... [2021-12-14 18:19:59,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:19:59,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:19:59,965 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 18:19:59,970 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 18:20:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_running_reset [2021-12-14 18:20:00,007 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_running_reset [2021-12-14 18:20:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_open [2021-12-14 18:20:00,007 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_open [2021-12-14 18:20:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 18:20:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 18:20:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-14 18:20:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-14 18:20:00,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 18:20:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 18:20:00,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 18:20:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 18:20:00,008 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_dec_reset [2021-12-14 18:20:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_dec_reset [2021-12-14 18:20:00,008 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ssi_get_link_status [2021-12-14 18:20:00,008 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ssi_get_link_status [2021-12-14 18:20:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-14 18:20:00,009 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-14 18:20:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-14 18:20:00,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-14 18:20:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 18:20:00,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 18:20:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_t1_set_circuit_type [2021-12-14 18:20:00,009 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_t1_set_circuit_type [2021-12-14 18:20:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_gpio_mkinput [2021-12-14 18:20:00,010 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_gpio_mkinput [2021-12-14 18:20:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 18:20:00,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 18:20:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 18:20:00,010 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 18:20:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 18:20:00,010 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 18:20:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ds3_set_100ft [2021-12-14 18:20:00,011 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ds3_set_100ft [2021-12-14 18:20:00,011 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-14 18:20:00,011 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-14 18:20:00,011 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-14 18:20:00,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-12-14 18:20:00,011 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ds3_set_scram [2021-12-14 18:20:00,011 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ds3_set_scram [2021-12-14 18:20:00,011 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2021-12-14 18:20:00,012 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_change_mtu [2021-12-14 18:20:00,012 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_close [2021-12-14 18:20:00,012 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_close [2021-12-14 18:20:00,012 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_gpio_mkoutput [2021-12-14 18:20:00,012 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_gpio_mkoutput [2021-12-14 18:20:00,012 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_reset [2021-12-14 18:20:00,012 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_reset [2021-12-14 18:20:00,012 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-14 18:20:00,012 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-14 18:20:00,013 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_get_stats [2021-12-14 18:20:00,013 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_get_stats [2021-12-14 18:20:00,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 18:20:00,013 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_sc [2021-12-14 18:20:00,013 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_sc [2021-12-14 18:20:00,013 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_driver_timeout [2021-12-14 18:20:00,013 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_driver_timeout [2021-12-14 18:20:00,013 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_netif [2021-12-14 18:20:00,013 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_netif [2021-12-14 18:20:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 18:20:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-12-14 18:20:00,014 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-12-14 18:20:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-14 18:20:00,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-14 18:20:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 18:20:00,014 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 18:20:00,014 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_trace [2021-12-14 18:20:00,014 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_trace [2021-12-14 18:20:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 18:20:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure write_av9110 [2021-12-14 18:20:00,015 INFO L138 BoogieDeclarations]: Found implementation of procedure write_av9110 [2021-12-14 18:20:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 18:20:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-12-14 18:20:00,015 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-12-14 18:20:00,015 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-12-14 18:20:00,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-12-14 18:20:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 18:20:00,016 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 18:20:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_type [2021-12-14 18:20:00,016 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_type [2021-12-14 18:20:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-14 18:20:00,016 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-14 18:20:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_remove_one [2021-12-14 18:20:00,016 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_remove_one [2021-12-14 18:20:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-12-14 18:20:00,017 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-12-14 18:20:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_t1_write [2021-12-14 18:20:00,017 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_t1_write [2021-12-14 18:20:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_close [2021-12-14 18:20:00,017 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_close [2021-12-14 18:20:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 18:20:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 18:20:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_led_off [2021-12-14 18:20:00,017 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_led_off [2021-12-14 18:20:00,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 18:20:00,018 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-14 18:20:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-14 18:20:00,018 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2021-12-14 18:20:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2021-12-14 18:20:00,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-14 18:20:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-14 18:20:00,018 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 18:20:00,018 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 18:20:00,019 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_softreset [2021-12-14 18:20:00,019 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_softreset [2021-12-14 18:20:00,019 INFO L130 BoogieDeclarations]: Found specification of procedure write_av9110_bit [2021-12-14 18:20:00,019 INFO L138 BoogieDeclarations]: Found implementation of procedure write_av9110_bit [2021-12-14 18:20:00,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 18:20:00,019 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-14 18:20:00,019 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-14 18:20:00,019 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-14 18:20:00,019 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-14 18:20:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-12-14 18:20:00,020 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-12-14 18:20:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 18:20:00,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 18:20:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_mii_writereg [2021-12-14 18:20:00,020 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_mii_writereg [2021-12-14 18:20:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ioctl [2021-12-14 18:20:00,020 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ioctl [2021-12-14 18:20:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 18:20:00,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 18:20:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_attach [2021-12-14 18:20:00,021 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_attach [2021-12-14 18:20:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_phys [2021-12-14 18:20:00,021 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_phys [2021-12-14 18:20:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ssi_set_status [2021-12-14 18:20:00,021 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ssi_set_status [2021-12-14 18:20:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 18:20:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-14 18:20:00,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-14 18:20:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-14 18:20:00,022 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-14 18:20:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 18:20:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-14 18:20:00,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-14 18:20:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 18:20:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_mii_readreg [2021-12-14 18:20:00,023 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_mii_readreg [2021-12-14 18:20:00,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-14 18:20:00,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-14 18:20:00,023 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2021-12-14 18:20:00,023 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2021-12-14 18:20:00,023 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 18:20:00,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 18:20:00,023 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-14 18:20:00,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-14 18:20:00,023 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_open [2021-12-14 18:20:00,024 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_open [2021-12-14 18:20:00,024 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-14 18:20:00,024 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-14 18:20:00,024 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_led_on [2021-12-14 18:20:00,024 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_led_on [2021-12-14 18:20:00,024 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2021-12-14 18:20:00,024 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2021-12-14 18:20:00,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 18:20:00,024 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_set_protocol [2021-12-14 18:20:00,025 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_set_protocol [2021-12-14 18:20:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-14 18:20:00,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-14 18:20:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2021-12-14 18:20:00,025 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2021-12-14 18:20:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-12-14 18:20:00,025 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-12-14 18:20:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 18:20:00,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 18:20:00,025 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2021-12-14 18:20:00,026 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2021-12-14 18:20:00,501 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 18:20:00,503 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 18:20:01,256 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 18:20:04,607 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 18:20:04,619 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 18:20:04,619 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 18:20:04,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:20:04 BoogieIcfgContainer [2021-12-14 18:20:04,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 18:20:04,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 18:20:04,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 18:20:04,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 18:20:04,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:19:57" (1/3) ... [2021-12-14 18:20:04,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32989ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:20:04, skipping insertion in model container [2021-12-14 18:20:04,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:19:59" (2/3) ... [2021-12-14 18:20:04,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32989ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:20:04, skipping insertion in model container [2021-12-14 18:20:04,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:20:04" (3/3) ... [2021-12-14 18:20:04,629 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2021-12-14 18:20:04,632 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 18:20:04,632 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 18:20:04,667 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 18:20:04,671 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 18:20:04,672 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 18:20:04,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 1794 states, 1154 states have (on average 1.3223570190641247) internal successors, (1526), 1202 states have internal predecessors, (1526), 563 states have call successors, (563), 76 states have call predecessors, (563), 75 states have return successors, (557), 542 states have call predecessors, (557), 557 states have call successors, (557) [2021-12-14 18:20:04,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-14 18:20:04,713 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:20:04,714 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-14 18:20:04,714 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:20:04,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:20:04,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2114030879, now seen corresponding path program 1 times [2021-12-14 18:20:04,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:20:04,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768857434] [2021-12-14 18:20:04,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:20:04,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:20:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:05,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:20:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:05,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:05,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:20:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:05,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:20:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:05,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:05,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:20:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:05,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:20:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:05,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:05,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:20:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:05,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 18:20:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:05,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:05,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 18:20:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:05,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:05,337 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-14 18:20:05,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:20:05,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768857434] [2021-12-14 18:20:05,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768857434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:20:05,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:20:05,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 18:20:05,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740925489] [2021-12-14 18:20:05,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:20:05,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 18:20:05,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:20:05,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 18:20:05,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 18:20:05,367 INFO L87 Difference]: Start difference. First operand has 1794 states, 1154 states have (on average 1.3223570190641247) internal successors, (1526), 1202 states have internal predecessors, (1526), 563 states have call successors, (563), 76 states have call predecessors, (563), 75 states have return successors, (557), 542 states have call predecessors, (557), 557 states have call successors, (557) Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 18:20:07,967 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:20:09,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:20:15,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:20:15,240 INFO L93 Difference]: Finished difference Result 3793 states and 5763 transitions. [2021-12-14 18:20:15,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 18:20:15,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 92 [2021-12-14 18:20:15,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:20:15,276 INFO L225 Difference]: With dead ends: 3793 [2021-12-14 18:20:15,276 INFO L226 Difference]: Without dead ends: 1987 [2021-12-14 18:20:15,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:20:15,297 INFO L933 BasicCegarLoop]: 2366 mSDtfsCounter, 1193 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 2873 mSolverCounterSat, 1518 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 4641 SdHoareTripleChecker+Invalid, 4392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1518 IncrementalHoareTripleChecker+Valid, 2873 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-12-14 18:20:15,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1234 Valid, 4641 Invalid, 4392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1518 Valid, 2873 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2021-12-14 18:20:15,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2021-12-14 18:20:15,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1777. [2021-12-14 18:20:15,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1145 states have (on average 1.3161572052401747) internal successors, (1507), 1185 states have internal predecessors, (1507), 557 states have call successors, (557), 75 states have call predecessors, (557), 74 states have return successors, (556), 541 states have call predecessors, (556), 556 states have call successors, (556) [2021-12-14 18:20:15,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2620 transitions. [2021-12-14 18:20:15,480 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2620 transitions. Word has length 92 [2021-12-14 18:20:15,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:20:15,481 INFO L470 AbstractCegarLoop]: Abstraction has 1777 states and 2620 transitions. [2021-12-14 18:20:15,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-14 18:20:15,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2620 transitions. [2021-12-14 18:20:15,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-14 18:20:15,488 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:20:15,489 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-14 18:20:15,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 18:20:15,489 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:20:15,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:20:15,490 INFO L85 PathProgramCache]: Analyzing trace with hash -645505755, now seen corresponding path program 1 times [2021-12-14 18:20:15,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:20:15,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872221592] [2021-12-14 18:20:15,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:20:15,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:20:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:15,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:20:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:15,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:15,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:20:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:15,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:20:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:15,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:15,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:20:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:15,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:20:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:15,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:15,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:20:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:15,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 18:20:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:15,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:15,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 18:20:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:15,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:15,730 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-14 18:20:15,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:20:15,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872221592] [2021-12-14 18:20:15,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872221592] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:20:15,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:20:15,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:20:15,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824005443] [2021-12-14 18:20:15,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:20:15,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:20:15,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:20:15,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:20:15,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:20:15,736 INFO L87 Difference]: Start difference. First operand 1777 states and 2620 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-14 18:20:19,248 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 18:20:23,738 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 18:20:27,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:20:27,124 INFO L93 Difference]: Finished difference Result 5629 states and 8535 transitions. [2021-12-14 18:20:27,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:20:27,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 92 [2021-12-14 18:20:27,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:20:27,153 INFO L225 Difference]: With dead ends: 5629 [2021-12-14 18:20:27,153 INFO L226 Difference]: Without dead ends: 3870 [2021-12-14 18:20:27,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:20:27,167 INFO L933 BasicCegarLoop]: 3062 mSDtfsCounter, 4266 mSDsluCounter, 4024 mSDsCounter, 0 mSdLazyCounter, 3855 mSolverCounterSat, 3209 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4591 SdHoareTripleChecker+Valid, 7086 SdHoareTripleChecker+Invalid, 7066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3209 IncrementalHoareTripleChecker+Valid, 3855 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-12-14 18:20:27,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4591 Valid, 7086 Invalid, 7066 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3209 Valid, 3855 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2021-12-14 18:20:27,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3870 states. [2021-12-14 18:20:27,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3870 to 3449. [2021-12-14 18:20:27,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3449 states, 2214 states have (on average 1.3175248419150858) internal successors, (2917), 2292 states have internal predecessors, (2917), 1087 states have call successors, (1087), 148 states have call predecessors, (1087), 147 states have return successors, (1086), 1056 states have call predecessors, (1086), 1086 states have call successors, (1086) [2021-12-14 18:20:27,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 5090 transitions. [2021-12-14 18:20:27,314 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 5090 transitions. Word has length 92 [2021-12-14 18:20:27,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:20:27,316 INFO L470 AbstractCegarLoop]: Abstraction has 3449 states and 5090 transitions. [2021-12-14 18:20:27,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-14 18:20:27,317 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 5090 transitions. [2021-12-14 18:20:27,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-14 18:20:27,323 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:20:27,323 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 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] [2021-12-14 18:20:27,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 18:20:27,324 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:20:27,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:20:27,324 INFO L85 PathProgramCache]: Analyzing trace with hash -600008244, now seen corresponding path program 1 times [2021-12-14 18:20:27,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:20:27,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810482017] [2021-12-14 18:20:27,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:20:27,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:20:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:27,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:20:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:27,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:27,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:20:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:27,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:20:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:27,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:27,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:20:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:27,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:20:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:27,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:27,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:20:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:27,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 18:20:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:27,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:27,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 18:20:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:27,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:27,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 18:20:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:27,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:27,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:20:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-14 18:20:27,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:20:27,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810482017] [2021-12-14 18:20:27,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810482017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:20:27,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:20:27,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:20:27,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907200698] [2021-12-14 18:20:27,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:20:27,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:20:27,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:20:27,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:20:27,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:20:27,666 INFO L87 Difference]: Start difference. First operand 3449 states and 5090 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-14 18:20:30,811 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 18:20:35,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:20:35,406 INFO L93 Difference]: Finished difference Result 6414 states and 9853 transitions. [2021-12-14 18:20:35,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:20:35,407 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 122 [2021-12-14 18:20:35,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:20:35,459 INFO L225 Difference]: With dead ends: 6414 [2021-12-14 18:20:35,459 INFO L226 Difference]: Without dead ends: 6411 [2021-12-14 18:20:35,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:20:35,469 INFO L933 BasicCegarLoop]: 3462 mSDtfsCounter, 4111 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 2579 mSolverCounterSat, 3483 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4350 SdHoareTripleChecker+Valid, 6247 SdHoareTripleChecker+Invalid, 6063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3483 IncrementalHoareTripleChecker+Valid, 2579 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-12-14 18:20:35,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4350 Valid, 6247 Invalid, 6063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3483 Valid, 2579 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-12-14 18:20:35,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2021-12-14 18:20:35,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 5756. [2021-12-14 18:20:35,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5756 states, 3679 states have (on average 1.3101386246262572) internal successors, (4820), 3821 states have internal predecessors, (4820), 1815 states have call successors, (1815), 258 states have call predecessors, (1815), 261 states have return successors, (1901), 1758 states have call predecessors, (1901), 1814 states have call successors, (1901) [2021-12-14 18:20:35,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5756 states to 5756 states and 8536 transitions. [2021-12-14 18:20:35,814 INFO L78 Accepts]: Start accepts. Automaton has 5756 states and 8536 transitions. Word has length 122 [2021-12-14 18:20:35,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:20:35,816 INFO L470 AbstractCegarLoop]: Abstraction has 5756 states and 8536 transitions. [2021-12-14 18:20:35,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-14 18:20:35,817 INFO L276 IsEmpty]: Start isEmpty. Operand 5756 states and 8536 transitions. [2021-12-14 18:20:35,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 18:20:35,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:20:35,834 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-14 18:20:35,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 18:20:35,835 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:20:35,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:20:35,835 INFO L85 PathProgramCache]: Analyzing trace with hash -377035489, now seen corresponding path program 1 times [2021-12-14 18:20:35,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:20:35,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595876536] [2021-12-14 18:20:35,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:20:35,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:20:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:20:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:20:36,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:20:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:20:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:20:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:20:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 18:20:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 18:20:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 18:20:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-14 18:20:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-14 18:20:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 18:20:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 18:20:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 18:20:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 18:20:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 18:20:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 18:20:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 18:20:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:36,257 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-14 18:20:36,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:20:36,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595876536] [2021-12-14 18:20:36,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595876536] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:20:36,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:20:36,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 18:20:36,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563857866] [2021-12-14 18:20:36,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:20:36,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 18:20:36,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:20:36,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 18:20:36,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:20:36,260 INFO L87 Difference]: Start difference. First operand 5756 states and 8536 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-14 18:20:39,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:20:50,062 WARN L534 Checker$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 18:20:54,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:20:54,188 INFO L93 Difference]: Finished difference Result 18798 states and 28686 transitions. [2021-12-14 18:20:54,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 18:20:54,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 178 [2021-12-14 18:20:54,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:20:54,308 INFO L225 Difference]: With dead ends: 18798 [2021-12-14 18:20:54,308 INFO L226 Difference]: Without dead ends: 13074 [2021-12-14 18:20:54,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-14 18:20:54,353 INFO L933 BasicCegarLoop]: 2312 mSDtfsCounter, 6173 mSDsluCounter, 7115 mSDsCounter, 0 mSdLazyCounter, 9477 mSolverCounterSat, 6085 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6623 SdHoareTripleChecker+Valid, 9427 SdHoareTripleChecker+Invalid, 15564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6085 IncrementalHoareTripleChecker+Valid, 9477 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2021-12-14 18:20:54,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6623 Valid, 9427 Invalid, 15564 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6085 Valid, 9477 Invalid, 2 Unknown, 0 Unchecked, 16.9s Time] [2021-12-14 18:20:54,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13074 states. [2021-12-14 18:20:54,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13074 to 11991. [2021-12-14 18:20:54,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11991 states, 7661 states have (on average 1.3042683722751598) internal successors, (9992), 7945 states have internal predecessors, (9992), 3777 states have call successors, (3777), 513 states have call predecessors, (3777), 552 states have return successors, (4166), 3700 states have call predecessors, (4166), 3776 states have call successors, (4166) [2021-12-14 18:20:55,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11991 states to 11991 states and 17935 transitions. [2021-12-14 18:20:55,061 INFO L78 Accepts]: Start accepts. Automaton has 11991 states and 17935 transitions. Word has length 178 [2021-12-14 18:20:55,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:20:55,062 INFO L470 AbstractCegarLoop]: Abstraction has 11991 states and 17935 transitions. [2021-12-14 18:20:55,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 4 states have internal predecessors, (84), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-14 18:20:55,063 INFO L276 IsEmpty]: Start isEmpty. Operand 11991 states and 17935 transitions. [2021-12-14 18:20:55,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-14 18:20:55,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:20:55,076 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-14 18:20:55,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 18:20:55,076 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:20:55,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:20:55,077 INFO L85 PathProgramCache]: Analyzing trace with hash 706437634, now seen corresponding path program 1 times [2021-12-14 18:20:55,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:20:55,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635824381] [2021-12-14 18:20:55,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:20:55,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:20:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:20:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:20:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:20:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:20:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:20:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:20:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 18:20:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 18:20:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 18:20:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 18:20:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-14 18:20:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 18:20:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 18:20:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 18:20:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-14 18:20:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-14 18:20:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-14 18:20:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:20:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 18:20:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:20:55,411 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-14 18:20:55,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:20:55,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635824381] [2021-12-14 18:20:55,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635824381] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:20:55,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:20:55,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 18:20:55,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674723075] [2021-12-14 18:20:55,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:20:55,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 18:20:55,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:20:55,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 18:20:55,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:20:55,414 INFO L87 Difference]: Start difference. First operand 11991 states and 17935 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-14 18:21:00,579 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 []