./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--ethernet--hp--hp100.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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--ethernet--hp--hp100.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 71a394c873c772dcf5e6708cb37d9b35e24256f5a212c542b9c08f202c87eae6 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 15:11:26,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 15:11:26,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 15:11:26,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 15:11:26,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 15:11:26,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 15:11:26,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 15:11:26,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 15:11:26,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 15:11:26,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 15:11:26,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 15:11:26,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 15:11:26,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 15:11:26,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 15:11:26,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 15:11:26,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 15:11:26,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 15:11:26,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 15:11:26,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 15:11:26,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 15:11:26,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 15:11:26,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 15:11:26,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 15:11:26,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 15:11:26,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 15:11:26,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 15:11:26,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 15:11:26,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 15:11:26,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 15:11:26,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 15:11:26,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 15:11:26,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 15:11:26,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 15:11:26,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 15:11:26,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 15:11:26,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 15:11:26,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 15:11:26,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 15:11:26,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 15:11:26,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 15:11:26,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 15:11:26,684 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 15:11:26,706 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 15:11:26,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 15:11:26,707 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 15:11:26,707 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 15:11:26,708 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 15:11:26,708 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 15:11:26,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 15:11:26,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 15:11:26,709 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 15:11:26,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 15:11:26,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 15:11:26,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 15:11:26,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 15:11:26,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 15:11:26,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 15:11:26,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 15:11:26,710 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 15:11:26,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 15:11:26,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 15:11:26,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 15:11:26,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 15:11:26,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 15:11:26,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 15:11:26,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 15:11:26,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 15:11:26,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 15:11:26,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 15:11:26,712 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 15:11:26,712 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 15:11:26,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 15:11:26,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 15:11:26,713 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71a394c873c772dcf5e6708cb37d9b35e24256f5a212c542b9c08f202c87eae6 [2021-12-22 15:11:26,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 15:11:26,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 15:11:26,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 15:11:26,942 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 15:11:26,943 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 15:11:26,944 INFO L432 ainManager$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--ethernet--hp--hp100.ko-entry_point.cil.out.i [2021-12-22 15:11:26,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f7356962/900b2cb587e54f4396c1e9e1f9cf9f52/FLAG834ba9977 [2021-12-22 15:11:27,770 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 15:11:27,771 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--ethernet--hp--hp100.ko-entry_point.cil.out.i [2021-12-22 15:11:27,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f7356962/900b2cb587e54f4396c1e9e1f9cf9f52/FLAG834ba9977 [2021-12-22 15:11:28,299 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f7356962/900b2cb587e54f4396c1e9e1f9cf9f52 [2021-12-22 15:11:28,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 15:11:28,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 15:11:28,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 15:11:28,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 15:11:28,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 15:11:28,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:11:28" (1/1) ... [2021-12-22 15:11:28,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b395479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:28, skipping insertion in model container [2021-12-22 15:11:28,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:11:28" (1/1) ... [2021-12-22 15:11:28,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 15:11:28,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 15:11:29,588 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--ethernet--hp--hp100.ko-entry_point.cil.out.i[263471,263484] [2021-12-22 15:11:29,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 15:11:29,662 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 15:11:29,873 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--ethernet--hp--hp100.ko-entry_point.cil.out.i[263471,263484] [2021-12-22 15:11:29,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 15:11:29,989 INFO L208 MainTranslator]: Completed translation [2021-12-22 15:11:29,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:29 WrapperNode [2021-12-22 15:11:29,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 15:11:29,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 15:11:29,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 15:11:29,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 15:11:29,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:29" (1/1) ... [2021-12-22 15:11:30,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:29" (1/1) ... [2021-12-22 15:11:30,163 INFO L137 Inliner]: procedures = 225, calls = 1448, calls flagged for inlining = 103, calls inlined = 100, statements flattened = 3651 [2021-12-22 15:11:30,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 15:11:30,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 15:11:30,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 15:11:30,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 15:11:30,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:29" (1/1) ... [2021-12-22 15:11:30,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:29" (1/1) ... [2021-12-22 15:11:30,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:29" (1/1) ... [2021-12-22 15:11:30,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:29" (1/1) ... [2021-12-22 15:11:30,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:29" (1/1) ... [2021-12-22 15:11:30,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:29" (1/1) ... [2021-12-22 15:11:30,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:29" (1/1) ... [2021-12-22 15:11:30,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 15:11:30,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 15:11:30,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 15:11:30,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 15:11:30,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:29" (1/1) ... [2021-12-22 15:11:30,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 15:11:30,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 15:11:30,354 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) [2021-12-22 15:11:30,448 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 [2021-12-22 15:11:30,464 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_update_stats [2021-12-22 15:11:30,464 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_update_stats [2021-12-22 15:11:30,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 15:11:30,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 15:11:30,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 15:11:30,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 15:11:30,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-22 15:11:30,465 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-22 15:11:30,465 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-12-22 15:11:30,465 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-12-22 15:11:30,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-22 15:11:30,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-22 15:11:30,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 15:11:30,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 15:11:30,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 15:11:30,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 15:11:30,466 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-22 15:11:30,466 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-22 15:11:30,466 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-22 15:11:30,466 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-22 15:11:30,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 15:11:30,467 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 15:11:30,467 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 15:11:30,467 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 15:11:30,467 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2021-12-22 15:11:30,467 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2021-12-22 15:11:30,467 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_open [2021-12-22 15:11:30,467 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_open [2021-12-22 15:11:30,467 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_load_eeprom [2021-12-22 15:11:30,467 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_load_eeprom [2021-12-22 15:11:30,468 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-22 15:11:30,468 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-22 15:11:30,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 15:11:30,468 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-22 15:11:30,468 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_sense_lan [2021-12-22 15:11:30,468 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_sense_lan [2021-12-22 15:11:30,468 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-22 15:11:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-22 15:11:30,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 15:11:30,469 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_get_stats [2021-12-22 15:11:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_get_stats [2021-12-22 15:11:30,469 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-22 15:11:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-22 15:11:30,469 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-12-22 15:11:30,470 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-12-22 15:11:30,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-22 15:11:30,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-22 15:11:30,470 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-22 15:11:30,470 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-22 15:11:30,470 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-22 15:11:30,470 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-22 15:11:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 15:11:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-12-22 15:11:30,471 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-12-22 15:11:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 15:11:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-12-22 15:11:30,472 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-12-22 15:11:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-12-22 15:11:30,472 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-12-22 15:11:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-12-22 15:11:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-12-22 15:11:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-22 15:11:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-22 15:11:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-22 15:11:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-22 15:11:30,474 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-22 15:11:30,474 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-22 15:11:30,474 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-22 15:11:30,474 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-22 15:11:30,474 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-12-22 15:11:30,474 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-12-22 15:11:30,475 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_cascade_reset [2021-12-22 15:11:30,475 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_cascade_reset [2021-12-22 15:11:30,475 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2021-12-22 15:11:30,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2021-12-22 15:11:30,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 15:11:30,475 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-22 15:11:30,475 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-22 15:11:30,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 15:11:30,476 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_build_rx_pdl [2021-12-22 15:11:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_build_rx_pdl [2021-12-22 15:11:30,476 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-12-22 15:11:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-12-22 15:11:30,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 15:11:30,476 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-22 15:11:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-22 15:11:30,476 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-22 15:11:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-22 15:11:30,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 15:11:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 15:11:30,477 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rx_bm [2021-12-22 15:11:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rx_bm [2021-12-22 15:11:30,478 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_BM_shutdown [2021-12-22 15:11:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_BM_shutdown [2021-12-22 15:11:30,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-22 15:11:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-22 15:11:30,478 INFO L130 BoogieDeclarations]: Found specification of procedure wait [2021-12-22 15:11:30,479 INFO L138 BoogieDeclarations]: Found implementation of procedure wait [2021-12-22 15:11:30,479 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-12-22 15:11:30,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-12-22 15:11:30,479 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-22 15:11:30,479 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-22 15:11:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_hwinit [2021-12-22 15:11:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_hwinit [2021-12-22 15:11:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 15:11:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-22 15:11:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-22 15:11:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure dev_consume_skb_any [2021-12-22 15:11:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_consume_skb_any [2021-12-22 15:11:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-12-22 15:11:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-12-22 15:11:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 15:11:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 15:11:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_whatever [2021-12-22 15:11:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_whatever [2021-12-22 15:11:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-22 15:11:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-22 15:11:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_close [2021-12-22 15:11:30,483 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_close [2021-12-22 15:11:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2021-12-22 15:11:30,484 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2021-12-22 15:11:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_stop_interface [2021-12-22 15:11:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_stop_interface [2021-12-22 15:11:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 15:11:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_check_lan [2021-12-22 15:11:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_check_lan [2021-12-22 15:11:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-22 15:11:30,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-22 15:11:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 15:11:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-22 15:11:30,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-22 15:11:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 15:11:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-22 15:11:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-22 15:11:30,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-22 15:11:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_set_multicast_list [2021-12-22 15:11:30,493 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_set_multicast_list [2021-12-22 15:11:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rxfill [2021-12-22 15:11:30,493 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rxfill [2021-12-22 15:11:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_start_interface [2021-12-22 15:11:30,493 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_start_interface [2021-12-22 15:11:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-22 15:11:30,493 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-22 15:11:30,494 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-12-22 15:11:30,494 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-12-22 15:11:30,494 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_clean_txring [2021-12-22 15:11:30,494 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_clean_txring [2021-12-22 15:11:30,494 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2021-12-22 15:11:30,494 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2021-12-22 15:11:30,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 15:11:30,494 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2021-12-22 15:11:30,494 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2021-12-22 15:11:30,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 15:11:30,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 15:11:30,495 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_login_to_vg_hub [2021-12-22 15:11:30,495 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_login_to_vg_hub [2021-12-22 15:11:30,495 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-12-22 15:11:30,495 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-12-22 15:11:30,942 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 15:11:30,945 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 15:11:31,305 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 15:11:32,566 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 15:11:32,667 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume 0 == ~bitwiseAnd(~tmp___4~7#1, 2096896) % 18446744073709551616; [2021-12-22 15:11:32,668 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !(0 == ~bitwiseAnd(~tmp___4~7#1, 2096896) % 18446744073709551616); [2021-12-22 15:11:32,668 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L8189-1: assume -9223372036854775808 <= #t~ret657#1 && #t~ret657#1 <= 9223372036854775807;havoc #t~ret657#1; [2021-12-22 15:11:32,668 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L8189: SUMMARY for call #t~ret657#1 := schedule_timeout_interruptible(1); srcloc: null [2021-12-22 15:11:32,668 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L8192: assume (if (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 else (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 - 18446744073709551616) < 0; [2021-12-22 15:11:32,668 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L8192: assume !((if (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 else (~jiffies~0 - ~time~2#1) % 18446744073709551616 % 18446744073709551616 - 18446744073709551616) < 0); [2021-12-22 15:11:32,719 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 15:11:32,730 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 15:11:32,731 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 15:11:32,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:11:32 BoogieIcfgContainer [2021-12-22 15:11:32,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 15:11:32,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 15:11:32,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 15:11:32,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 15:11:32,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:11:28" (1/3) ... [2021-12-22 15:11:32,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234713c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:11:32, skipping insertion in model container [2021-12-22 15:11:32,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:29" (2/3) ... [2021-12-22 15:11:32,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234713c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:11:32, skipping insertion in model container [2021-12-22 15:11:32,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:11:32" (3/3) ... [2021-12-22 15:11:32,739 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i [2021-12-22 15:11:32,743 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 15:11:32,743 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 15:11:32,778 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 15:11:32,783 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 [2021-12-22 15:11:32,783 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 15:11:32,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 1632 states, 1028 states have (on average 1.3511673151750974) internal successors, (1389), 1082 states have internal predecessors, (1389), 535 states have call successors, (535), 70 states have call predecessors, (535), 69 states have return successors, (528), 512 states have call predecessors, (528), 528 states have call successors, (528) [2021-12-22 15:11:32,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-22 15:11:32,894 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:11:32,894 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-12-22 15:11:32,895 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:11:32,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:11:32,899 INFO L85 PathProgramCache]: Analyzing trace with hash 740841460, now seen corresponding path program 1 times [2021-12-22 15:11:32,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:11:32,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417023508] [2021-12-22 15:11:32,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:11:32,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:11:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:11:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:11:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:11:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:11:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:11:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:11:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:11:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:11:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 15:11:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:11:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 15:11:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 15:11:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 15:11:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 15:11:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-22 15:11:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 15:11:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 15:11:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-22 15:11:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:33,598 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-22 15:11:33,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:11:33,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417023508] [2021-12-22 15:11:33,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417023508] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:11:33,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:11:33,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 15:11:33,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997029691] [2021-12-22 15:11:33,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:11:33,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 15:11:33,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:11:33,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 15:11:33,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 15:11:33,634 INFO L87 Difference]: Start difference. First operand has 1632 states, 1028 states have (on average 1.3511673151750974) internal successors, (1389), 1082 states have internal predecessors, (1389), 535 states have call successors, (535), 70 states have call predecessors, (535), 69 states have return successors, (528), 512 states have call predecessors, (528), 528 states have call successors, (528) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-22 15:11:37,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:11:37,193 INFO L93 Difference]: Finished difference Result 3398 states and 5191 transitions. [2021-12-22 15:11:37,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 15:11:37,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 167 [2021-12-22 15:11:37,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:11:37,215 INFO L225 Difference]: With dead ends: 3398 [2021-12-22 15:11:37,216 INFO L226 Difference]: Without dead ends: 1751 [2021-12-22 15:11:37,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-22 15:11:37,236 INFO L933 BasicCegarLoop]: 2022 mSDtfsCounter, 2012 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 1707 mSolverCounterSat, 2592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 4015 SdHoareTripleChecker+Invalid, 4299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2592 IncrementalHoareTripleChecker+Valid, 1707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-22 15:11:37,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2053 Valid, 4015 Invalid, 4299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2592 Valid, 1707 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-22 15:11:37,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2021-12-22 15:11:37,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1606. [2021-12-22 15:11:37,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1011 states have (on average 1.3422354104846685) internal successors, (1357), 1055 states have internal predecessors, (1357), 526 states have call successors, (526), 69 states have call predecessors, (526), 68 states have return successors, (525), 509 states have call predecessors, (525), 525 states have call successors, (525) [2021-12-22 15:11:37,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2408 transitions. [2021-12-22 15:11:37,408 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2408 transitions. Word has length 167 [2021-12-22 15:11:37,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:11:37,409 INFO L470 AbstractCegarLoop]: Abstraction has 1606 states and 2408 transitions. [2021-12-22 15:11:37,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-22 15:11:37,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2408 transitions. [2021-12-22 15:11:37,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-22 15:11:37,415 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:11:37,415 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-12-22 15:11:37,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 15:11:37,416 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:11:37,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:11:37,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1077778858, now seen corresponding path program 1 times [2021-12-22 15:11:37,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:11:37,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395517113] [2021-12-22 15:11:37,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:11:37,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:11:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:11:37,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:11:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:11:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:11:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:11:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:11:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:11:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:11:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 15:11:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:11:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 15:11:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 15:11:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 15:11:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 15:11:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-22 15:11:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 15:11:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 15:11:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-22 15:11:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-22 15:11:37,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:11:37,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395517113] [2021-12-22 15:11:37,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395517113] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:11:37,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:11:37,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 15:11:37,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988026188] [2021-12-22 15:11:37,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:11:37,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 15:11:37,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:11:37,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 15:11:37,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 15:11:37,821 INFO L87 Difference]: Start difference. First operand 1606 states and 2408 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-22 15:11:45,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:11:45,356 INFO L93 Difference]: Finished difference Result 5068 states and 7677 transitions. [2021-12-22 15:11:45,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 15:11:45,356 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 167 [2021-12-22 15:11:45,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:11:45,374 INFO L225 Difference]: With dead ends: 5068 [2021-12-22 15:11:45,375 INFO L226 Difference]: Without dead ends: 3484 [2021-12-22 15:11:45,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-22 15:11:45,388 INFO L933 BasicCegarLoop]: 2520 mSDtfsCounter, 6255 mSDsluCounter, 6710 mSDsCounter, 0 mSdLazyCounter, 6008 mSolverCounterSat, 7104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6507 SdHoareTripleChecker+Valid, 9230 SdHoareTripleChecker+Invalid, 13112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7104 IncrementalHoareTripleChecker+Valid, 6008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-12-22 15:11:45,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6507 Valid, 9230 Invalid, 13112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7104 Valid, 6008 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-12-22 15:11:45,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3484 states. [2021-12-22 15:11:45,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3484 to 3184. [2021-12-22 15:11:45,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3184 states, 2004 states have (on average 1.342814371257485) internal successors, (2691), 2096 states have internal predecessors, (2691), 1043 states have call successors, (1043), 137 states have call predecessors, (1043), 136 states have return successors, (1046), 1006 states have call predecessors, (1046), 1042 states have call successors, (1046) [2021-12-22 15:11:45,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4780 transitions. [2021-12-22 15:11:45,545 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4780 transitions. Word has length 167 [2021-12-22 15:11:45,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:11:45,546 INFO L470 AbstractCegarLoop]: Abstraction has 3184 states and 4780 transitions. [2021-12-22 15:11:45,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-22 15:11:45,546 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4780 transitions. [2021-12-22 15:11:45,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-22 15:11:45,552 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:11:45,552 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-12-22 15:11:45,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 15:11:45,552 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:11:45,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:11:45,553 INFO L85 PathProgramCache]: Analyzing trace with hash -198068825, now seen corresponding path program 1 times [2021-12-22 15:11:45,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:11:45,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698542942] [2021-12-22 15:11:45,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:11:45,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:11:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:11:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:11:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:11:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:11:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:11:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:11:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:11:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:11:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 15:11:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:11:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 15:11:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 15:11:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-22 15:11:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 15:11:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 15:11:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-22 15:11:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-22 15:11:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-22 15:11:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:45,830 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-22 15:11:45,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:11:45,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698542942] [2021-12-22 15:11:45,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698542942] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:11:45,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:11:45,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 15:11:45,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222553913] [2021-12-22 15:11:45,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:11:45,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 15:11:45,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:11:45,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 15:11:45,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 15:11:45,834 INFO L87 Difference]: Start difference. First operand 3184 states and 4780 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-22 15:11:53,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:11:53,710 INFO L93 Difference]: Finished difference Result 10100 states and 15305 transitions. [2021-12-22 15:11:53,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 15:11:53,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 169 [2021-12-22 15:11:53,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:11:53,749 INFO L225 Difference]: With dead ends: 10100 [2021-12-22 15:11:53,750 INFO L226 Difference]: Without dead ends: 6938 [2021-12-22 15:11:53,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-22 15:11:53,768 INFO L933 BasicCegarLoop]: 2428 mSDtfsCounter, 5332 mSDsluCounter, 7295 mSDsCounter, 0 mSdLazyCounter, 6683 mSolverCounterSat, 5565 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5583 SdHoareTripleChecker+Valid, 9723 SdHoareTripleChecker+Invalid, 12248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5565 IncrementalHoareTripleChecker+Valid, 6683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-12-22 15:11:53,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5583 Valid, 9723 Invalid, 12248 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5565 Valid, 6683 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2021-12-22 15:11:53,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6938 states. [2021-12-22 15:11:54,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6938 to 6346. [2021-12-22 15:11:54,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6346 states, 3997 states have (on average 1.3427570678008507) internal successors, (5367), 4180 states have internal predecessors, (5367), 2076 states have call successors, (2076), 273 states have call predecessors, (2076), 272 states have return successors, (2089), 2004 states have call predecessors, (2089), 2075 states have call successors, (2089) [2021-12-22 15:11:54,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6346 states to 6346 states and 9532 transitions. [2021-12-22 15:11:54,087 INFO L78 Accepts]: Start accepts. Automaton has 6346 states and 9532 transitions. Word has length 169 [2021-12-22 15:11:54,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:11:54,088 INFO L470 AbstractCegarLoop]: Abstraction has 6346 states and 9532 transitions. [2021-12-22 15:11:54,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-22 15:11:54,088 INFO L276 IsEmpty]: Start isEmpty. Operand 6346 states and 9532 transitions. [2021-12-22 15:11:54,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-22 15:11:54,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:11:54,094 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-12-22 15:11:54,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 15:11:54,094 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:11:54,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:11:54,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2105470557, now seen corresponding path program 1 times [2021-12-22 15:11:54,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:11:54,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059111631] [2021-12-22 15:11:54,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:11:54,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:11:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:11:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:11:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:11:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:11:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:11:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:11:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:11:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:11:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 15:11:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:11:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 15:11:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 15:11:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:11:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 15:11:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 15:11:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-22 15:11:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-22 15:11:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-22 15:11:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-22 15:11:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:11:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-22 15:11:54,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:11:54,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059111631] [2021-12-22 15:11:54,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059111631] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:11:54,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:11:54,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 15:11:54,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095290919] [2021-12-22 15:11:54,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:11:54,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 15:11:54,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:11:54,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 15:11:54,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 15:11:54,389 INFO L87 Difference]: Start difference. First operand 6346 states and 9532 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-22 15:12:02,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:12:02,160 INFO L93 Difference]: Finished difference Result 20174 states and 30570 transitions. [2021-12-22 15:12:02,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 15:12:02,161 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 168 [2021-12-22 15:12:02,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:12:02,251 INFO L225 Difference]: With dead ends: 20174 [2021-12-22 15:12:02,251 INFO L226 Difference]: Without dead ends: 13850 [2021-12-22 15:12:02,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-22 15:12:02,291 INFO L933 BasicCegarLoop]: 2430 mSDtfsCounter, 6519 mSDsluCounter, 6635 mSDsCounter, 0 mSdLazyCounter, 5920 mSolverCounterSat, 7185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6771 SdHoareTripleChecker+Valid, 9065 SdHoareTripleChecker+Invalid, 13105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7185 IncrementalHoareTripleChecker+Valid, 5920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-12-22 15:12:02,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6771 Valid, 9065 Invalid, 13105 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7185 Valid, 5920 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-12-22 15:12:02,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13850 states. [2021-12-22 15:12:02,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13850 to 12672. [2021-12-22 15:12:02,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12672 states, 7985 states have (on average 1.3421415153412648) internal successors, (10717), 8349 states have internal predecessors, (10717), 4141 states have call successors, (4141), 546 states have call predecessors, (4141), 545 states have return successors, (4178), 4000 states have call predecessors, (4178), 4140 states have call successors, (4178) [2021-12-22 15:12:02,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12672 states to 12672 states and 19036 transitions. [2021-12-22 15:12:02,979 INFO L78 Accepts]: Start accepts. Automaton has 12672 states and 19036 transitions. Word has length 168 [2021-12-22 15:12:02,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:12:02,980 INFO L470 AbstractCegarLoop]: Abstraction has 12672 states and 19036 transitions. [2021-12-22 15:12:02,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-22 15:12:02,981 INFO L276 IsEmpty]: Start isEmpty. Operand 12672 states and 19036 transitions. [2021-12-22 15:12:02,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-22 15:12:02,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:12:02,988 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-12-22 15:12:02,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 15:12:02,988 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:12:02,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:12:02,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1604410682, now seen corresponding path program 1 times [2021-12-22 15:12:02,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:12:02,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559835497] [2021-12-22 15:12:02,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:12:02,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:12:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:12:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:12:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:12:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:12:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:12:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:12:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:12:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:12:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:12:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:12:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:12:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:12:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 15:12:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:12:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:12:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 15:12:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:12:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 15:12:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:12:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 15:12:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-22 15:12:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 15:12:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-22 15:12:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-22 15:12:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-22 15:12:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:03,276 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-22 15:12:03,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:12:03,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559835497] [2021-12-22 15:12:03,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559835497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:12:03,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:12:03,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 15:12:03,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260988378] [2021-12-22 15:12:03,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:12:03,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 15:12:03,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:12:03,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 15:12:03,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-22 15:12:03,279 INFO L87 Difference]: Start difference. First operand 12672 states and 19036 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-22 15:12:12,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:12:12,279 INFO L93 Difference]: Finished difference Result 40084 states and 60722 transitions. [2021-12-22 15:12:12,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 15:12:12,280 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 170 [2021-12-22 15:12:12,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:12:12,422 INFO L225 Difference]: With dead ends: 40084 [2021-12-22 15:12:12,423 INFO L226 Difference]: Without dead ends: 27434 [2021-12-22 15:12:12,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-22 15:12:12,486 INFO L933 BasicCegarLoop]: 2209 mSDtfsCounter, 5670 mSDsluCounter, 6909 mSDsCounter, 0 mSdLazyCounter, 6366 mSolverCounterSat, 5894 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5921 SdHoareTripleChecker+Valid, 9118 SdHoareTripleChecker+Invalid, 12260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5894 IncrementalHoareTripleChecker+Valid, 6366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-12-22 15:12:12,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5921 Valid, 9118 Invalid, 12260 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5894 Valid, 6366 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2021-12-22 15:12:12,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27434 states. [2021-12-22 15:12:13,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27434 to 25165. [2021-12-22 15:12:13,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25165 states, 15854 states have (on average 1.341932635297086) internal successors, (21275), 16572 states have internal predecessors, (21275), 8224 states have call successors, (8224), 1087 states have call predecessors, (8224), 1086 states have return successors, (8317), 7947 states have call predecessors, (8317), 8223 states have call successors, (8317) [2021-12-22 15:12:13,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25165 states to 25165 states and 37816 transitions. [2021-12-22 15:12:13,958 INFO L78 Accepts]: Start accepts. Automaton has 25165 states and 37816 transitions. Word has length 170 [2021-12-22 15:12:13,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:12:13,959 INFO L470 AbstractCegarLoop]: Abstraction has 25165 states and 37816 transitions. [2021-12-22 15:12:13,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-22 15:12:13,959 INFO L276 IsEmpty]: Start isEmpty. Operand 25165 states and 37816 transitions. [2021-12-22 15:12:13,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-22 15:12:13,966 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:12:13,966 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 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] [2021-12-22 15:12:13,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 15:12:13,966 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:12:13,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:12:13,967 INFO L85 PathProgramCache]: Analyzing trace with hash 482038512, now seen corresponding path program 1 times [2021-12-22 15:12:13,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:12:13,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074986091] [2021-12-22 15:12:13,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:12:13,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:12:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 15:12:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:12:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:12:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 15:12:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:12:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:12:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 15:12:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:12:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:12:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-22 15:12:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:12:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:12:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 15:12:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:12:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 15:12:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 15:12:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:12:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 15:12:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 15:12:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-22 15:12:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 15:12:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-22 15:12:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 15:12:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-22 15:12:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-22 15:12:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-22 15:12:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,302 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-12-22 15:12:14,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:12:14,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074986091] [2021-12-22 15:12:14,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074986091] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 15:12:14,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916614153] [2021-12-22 15:12:14,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:12:14,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 15:12:14,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 15:12:14,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 15:12:14,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 15:12:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:14,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 2196 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 15:12:14,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 15:12:15,124 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-12-22 15:12:15,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 15:12:15,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916614153] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:12:15,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 15:12:15,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-12-22 15:12:15,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767895091] [2021-12-22 15:12:15,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:12:15,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 15:12:15,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:12:15,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 15:12:15,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-22 15:12:15,127 INFO L87 Difference]: Start difference. First operand 25165 states and 37816 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-22 15:12:16,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:12:16,087 INFO L93 Difference]: Finished difference Result 50473 states and 75875 transitions. [2021-12-22 15:12:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 15:12:16,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 180 [2021-12-22 15:12:16,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:12:16,212 INFO L225 Difference]: With dead ends: 50473 [2021-12-22 15:12:16,213 INFO L226 Difference]: Without dead ends: 25330 [2021-12-22 15:12:16,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-22 15:12:16,323 INFO L933 BasicCegarLoop]: 2409 mSDtfsCounter, 9 mSDsluCounter, 2399 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4808 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 15:12:16,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 4808 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 15:12:16,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25330 states. [2021-12-22 15:12:17,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25330 to 25180. [2021-12-22 15:12:17,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25180 states, 15869 states have (on average 1.3416094271850778) internal successors, (21290), 16587 states have internal predecessors, (21290), 8224 states have call successors, (8224), 1087 states have call predecessors, (8224), 1086 states have return successors, (8317), 7947 states have call predecessors, (8317), 8223 states have call successors, (8317) [2021-12-22 15:12:17,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25180 states to 25180 states and 37831 transitions. [2021-12-22 15:12:17,613 INFO L78 Accepts]: Start accepts. Automaton has 25180 states and 37831 transitions. Word has length 180 [2021-12-22 15:12:17,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:12:17,614 INFO L470 AbstractCegarLoop]: Abstraction has 25180 states and 37831 transitions. [2021-12-22 15:12:17,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-22 15:12:17,614 INFO L276 IsEmpty]: Start isEmpty. Operand 25180 states and 37831 transitions. [2021-12-22 15:12:17,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-22 15:12:17,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:12:17,623 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 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] [2021-12-22 15:12:17,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 15:12:17,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-22 15:12:17,843 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:12:17,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:12:17,844 INFO L85 PathProgramCache]: Analyzing trace with hash 2079713895, now seen corresponding path program 1 times [2021-12-22 15:12:17,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:12:17,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010123298] [2021-12-22 15:12:17,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:12:17,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:12:17,905 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 15:12:17,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400585011] [2021-12-22 15:12:17,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:12:17,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 15:12:17,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 15:12:17,920 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 15:12:17,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 15:12:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:18,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 15:12:18,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 15:12:18,778 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-12-22 15:12:18,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 15:12:18,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:12:18,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010123298] [2021-12-22 15:12:18,778 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 15:12:18,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400585011] [2021-12-22 15:12:18,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400585011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:12:18,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:12:18,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 15:12:18,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614790539] [2021-12-22 15:12:18,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:12:18,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 15:12:18,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:12:18,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 15:12:18,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 15:12:18,780 INFO L87 Difference]: Start difference. First operand 25180 states and 37831 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-22 15:12:20,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:12:20,122 INFO L93 Difference]: Finished difference Result 63018 states and 94683 transitions. [2021-12-22 15:12:20,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 15:12:20,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 184 [2021-12-22 15:12:20,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:12:20,308 INFO L225 Difference]: With dead ends: 63018 [2021-12-22 15:12:20,308 INFO L226 Difference]: Without dead ends: 37860 [2021-12-22 15:12:20,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-12-22 15:12:20,430 INFO L933 BasicCegarLoop]: 3465 mSDtfsCounter, 2428 mSDsluCounter, 16236 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2432 SdHoareTripleChecker+Valid, 19701 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 15:12:20,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2432 Valid, 19701 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 15:12:20,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37860 states. [2021-12-22 15:12:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37860 to 37711. [2021-12-22 15:12:22,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37711 states, 23776 states have (on average 1.3424461641991925) internal successors, (31918), 24860 states have internal predecessors, (31918), 12303 states have call successors, (12303), 1624 states have call predecessors, (12303), 1631 states have return successors, (12486), 11886 states have call predecessors, (12486), 12302 states have call successors, (12486) [2021-12-22 15:12:22,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37711 states to 37711 states and 56707 transitions. [2021-12-22 15:12:22,481 INFO L78 Accepts]: Start accepts. Automaton has 37711 states and 56707 transitions. Word has length 184 [2021-12-22 15:12:22,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 15:12:22,481 INFO L470 AbstractCegarLoop]: Abstraction has 37711 states and 56707 transitions. [2021-12-22 15:12:22,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-22 15:12:22,482 INFO L276 IsEmpty]: Start isEmpty. Operand 37711 states and 56707 transitions. [2021-12-22 15:12:22,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-22 15:12:22,493 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 15:12:22,493 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 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] [2021-12-22 15:12:22,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 15:12:22,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-22 15:12:22,716 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 15:12:22,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 15:12:22,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1028835409, now seen corresponding path program 1 times [2021-12-22 15:12:22,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 15:12:22,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316116574] [2021-12-22 15:12:22,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:12:22,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 15:12:22,787 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 15:12:22,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451285405] [2021-12-22 15:12:22,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 15:12:22,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 15:12:22,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 15:12:22,812 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 15:12:22,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 15:12:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 15:12:23,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 2228 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 15:12:23,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 15:12:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-12-22 15:12:23,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 15:12:23,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 15:12:23,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316116574] [2021-12-22 15:12:23,663 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 15:12:23,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451285405] [2021-12-22 15:12:23,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451285405] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 15:12:23,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 15:12:23,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 15:12:23,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73831242] [2021-12-22 15:12:23,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 15:12:23,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 15:12:23,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 15:12:23,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 15:12:23,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 15:12:23,665 INFO L87 Difference]: Start difference. First operand 37711 states and 56707 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-22 15:12:25,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 15:12:25,522 INFO L93 Difference]: Finished difference Result 88133 states and 132481 transitions. [2021-12-22 15:12:25,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 15:12:25,523 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 185 [2021-12-22 15:12:25,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 15:12:25,806 INFO L225 Difference]: With dead ends: 88133 [2021-12-22 15:12:25,806 INFO L226 Difference]: Without dead ends: 50444 [2021-12-22 15:12:26,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-12-22 15:12:26,204 INFO L933 BasicCegarLoop]: 3752 mSDtfsCounter, 2428 mSDsluCounter, 17372 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2432 SdHoareTripleChecker+Valid, 21124 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 15:12:26,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2432 Valid, 21124 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 15:12:26,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50444 states.