./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 18:17:14,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 18:17:14,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 18:17:14,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 18:17:14,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 18:17:14,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 18:17:14,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 18:17:14,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 18:17:14,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 18:17:14,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 18:17:14,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 18:17:14,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 18:17:14,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 18:17:14,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 18:17:14,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 18:17:14,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 18:17:14,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 18:17:14,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 18:17:14,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 18:17:14,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 18:17:14,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 18:17:14,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 18:17:14,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 18:17:14,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 18:17:14,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 18:17:14,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 18:17:14,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 18:17:14,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 18:17:14,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 18:17:14,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 18:17:14,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 18:17:14,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 18:17:14,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 18:17:14,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 18:17:14,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 18:17:14,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 18:17:14,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 18:17:14,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 18:17:14,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 18:17:14,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 18:17:14,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 18:17:14,168 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 18:17:14,186 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 18:17:14,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 18:17:14,187 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 18:17:14,187 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 18:17:14,188 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 18:17:14,188 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 18:17:14,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 18:17:14,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 18:17:14,189 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 18:17:14,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 18:17:14,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 18:17:14,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 18:17:14,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 18:17:14,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 18:17:14,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 18:17:14,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 18:17:14,190 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 18:17:14,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 18:17:14,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 18:17:14,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 18:17:14,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 18:17:14,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:17:14,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 18:17:14,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 18:17:14,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 18:17:14,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 18:17:14,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 18:17:14,192 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 18:17:14,192 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 18:17:14,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 18:17:14,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 18:17:14,193 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71a394c873c772dcf5e6708cb37d9b35e24256f5a212c542b9c08f202c87eae6 [2021-12-14 18:17:14,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 18:17:14,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 18:17:14,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 18:17:14,612 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 18:17:14,613 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 18:17:14,614 INFO L432 ainManager$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 [2021-12-14 18:17:14,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0faaf46de/9772a64108c34a6392c1c411d598cc5c/FLAG059edcaf7 [2021-12-14 18:17:15,501 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 18:17:15,502 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 [2021-12-14 18:17:15,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0faaf46de/9772a64108c34a6392c1c411d598cc5c/FLAG059edcaf7 [2021-12-14 18:17:15,672 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0faaf46de/9772a64108c34a6392c1c411d598cc5c [2021-12-14 18:17:15,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 18:17:15,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 18:17:15,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 18:17:15,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 18:17:15,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 18:17:15,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:17:15" (1/1) ... [2021-12-14 18:17:15,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@518355f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:15, skipping insertion in model container [2021-12-14 18:17:15,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:17:15" (1/1) ... [2021-12-14 18:17:15,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 18:17:15,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 18:17:16,982 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] [2021-12-14 18:17:17,025 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:17:17,048 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 18:17:17,300 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] [2021-12-14 18:17:17,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:17:17,428 INFO L208 MainTranslator]: Completed translation [2021-12-14 18:17:17,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:17 WrapperNode [2021-12-14 18:17:17,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 18:17:17,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 18:17:17,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 18:17:17,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 18:17:17,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:17" (1/1) ... [2021-12-14 18:17:17,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:17" (1/1) ... [2021-12-14 18:17:17,650 INFO L137 Inliner]: procedures = 225, calls = 1448, calls flagged for inlining = 103, calls inlined = 100, statements flattened = 3651 [2021-12-14 18:17:17,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 18:17:17,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 18:17:17,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 18:17:17,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 18:17:17,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:17" (1/1) ... [2021-12-14 18:17:17,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:17" (1/1) ... [2021-12-14 18:17:17,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:17" (1/1) ... [2021-12-14 18:17:17,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:17" (1/1) ... [2021-12-14 18:17:17,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:17" (1/1) ... [2021-12-14 18:17:17,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:17" (1/1) ... [2021-12-14 18:17:17,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:17" (1/1) ... [2021-12-14 18:17:17,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 18:17:17,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 18:17:17,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 18:17:17,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 18:17:17,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:17" (1/1) ... [2021-12-14 18:17:17,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:17:17,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:17:18,021 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 18:17:18,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 18:17:18,097 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_update_stats [2021-12-14 18:17:18,097 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_update_stats [2021-12-14 18:17:18,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 18:17:18,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 18:17:18,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 18:17:18,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 18:17:18,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 18:17:18,098 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 18:17:18,098 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-12-14 18:17:18,098 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-12-14 18:17:18,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-14 18:17:18,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-14 18:17:18,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 18:17:18,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 18:17:18,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 18:17:18,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 18:17:18,102 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-14 18:17:18,102 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-14 18:17:18,103 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-14 18:17:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-14 18:17:18,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 18:17:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 18:17:18,103 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 18:17:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 18:17:18,103 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2021-12-14 18:17:18,103 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2021-12-14 18:17:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_open [2021-12-14 18:17:18,104 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_open [2021-12-14 18:17:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_load_eeprom [2021-12-14 18:17:18,104 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_load_eeprom [2021-12-14 18:17:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-14 18:17:18,104 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-14 18:17:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 18:17:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-14 18:17:18,104 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_sense_lan [2021-12-14 18:17:18,105 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_sense_lan [2021-12-14 18:17:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-14 18:17:18,105 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-14 18:17:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 18:17:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_get_stats [2021-12-14 18:17:18,105 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_get_stats [2021-12-14 18:17:18,105 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-14 18:17:18,105 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-14 18:17:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-12-14 18:17:18,106 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-12-14 18:17:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-14 18:17:18,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-14 18:17:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 18:17:18,106 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 18:17:18,106 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-14 18:17:18,106 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-14 18:17:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 18:17:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-12-14 18:17:18,107 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-12-14 18:17:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 18:17:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-12-14 18:17:18,107 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-12-14 18:17:18,107 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-12-14 18:17:18,107 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-12-14 18:17:18,108 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-12-14 18:17:18,108 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-12-14 18:17:18,108 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-14 18:17:18,108 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-14 18:17:18,108 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-14 18:17:18,108 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-14 18:17:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-14 18:17:18,109 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-14 18:17:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-14 18:17:18,109 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-14 18:17:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-12-14 18:17:18,109 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-12-14 18:17:18,109 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_cascade_reset [2021-12-14 18:17:18,110 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_cascade_reset [2021-12-14 18:17:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2021-12-14 18:17:18,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2021-12-14 18:17:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 18:17:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-14 18:17:18,110 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-14 18:17:18,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 18:17:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_build_rx_pdl [2021-12-14 18:17:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_build_rx_pdl [2021-12-14 18:17:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-12-14 18:17:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-12-14 18:17:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 18:17:18,111 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-14 18:17:18,111 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-14 18:17:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-14 18:17:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-14 18:17:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 18:17:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 18:17:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rx_bm [2021-12-14 18:17:18,112 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rx_bm [2021-12-14 18:17:18,112 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_BM_shutdown [2021-12-14 18:17:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_BM_shutdown [2021-12-14 18:17:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-14 18:17:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-14 18:17:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure wait [2021-12-14 18:17:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure wait [2021-12-14 18:17:18,113 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-12-14 18:17:18,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-12-14 18:17:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-14 18:17:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-14 18:17:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_hwinit [2021-12-14 18:17:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_hwinit [2021-12-14 18:17:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 18:17:18,114 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-14 18:17:18,114 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-14 18:17:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure dev_consume_skb_any [2021-12-14 18:17:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_consume_skb_any [2021-12-14 18:17:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-12-14 18:17:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-12-14 18:17:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 18:17:18,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 18:17:18,115 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_whatever [2021-12-14 18:17:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_whatever [2021-12-14 18:17:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 18:17:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 18:17:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_close [2021-12-14 18:17:18,116 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_close [2021-12-14 18:17:18,116 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2021-12-14 18:17:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2021-12-14 18:17:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_stop_interface [2021-12-14 18:17:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_stop_interface [2021-12-14 18:17:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 18:17:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_check_lan [2021-12-14 18:17:18,117 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_check_lan [2021-12-14 18:17:18,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-14 18:17:18,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-14 18:17:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 18:17:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-14 18:17:18,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-14 18:17:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 18:17:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 18:17:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-14 18:17:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-14 18:17:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_set_multicast_list [2021-12-14 18:17:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_set_multicast_list [2021-12-14 18:17:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_rxfill [2021-12-14 18:17:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_rxfill [2021-12-14 18:17:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_start_interface [2021-12-14 18:17:18,119 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_start_interface [2021-12-14 18:17:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-14 18:17:18,120 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-14 18:17:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-12-14 18:17:18,120 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-12-14 18:17:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_clean_txring [2021-12-14 18:17:18,120 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_clean_txring [2021-12-14 18:17:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2021-12-14 18:17:18,120 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2021-12-14 18:17:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 18:17:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2021-12-14 18:17:18,121 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2021-12-14 18:17:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 18:17:18,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 18:17:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure hp100_login_to_vg_hub [2021-12-14 18:17:18,121 INFO L138 BoogieDeclarations]: Found implementation of procedure hp100_login_to_vg_hub [2021-12-14 18:17:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-12-14 18:17:18,121 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-12-14 18:17:18,625 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 18:17:18,627 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 18:17:18,948 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 18:17:20,255 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 18:17:20,349 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume 0 == ~bitwiseAnd(~tmp___4~7#1, 2096896) % 18446744073709551616; [2021-12-14 18:17:20,349 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !(0 == ~bitwiseAnd(~tmp___4~7#1, 2096896) % 18446744073709551616); [2021-12-14 18:17:20,349 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L8189-1: assume -9223372036854775808 <= #t~ret657#1 && #t~ret657#1 <= 9223372036854775807;havoc #t~ret657#1; [2021-12-14 18:17:20,350 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L8189: SUMMARY for call #t~ret657#1 := schedule_timeout_interruptible(1); srcloc: null [2021-12-14 18:17:20,350 INFO L768 $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; [2021-12-14 18:17:20,350 INFO L768 $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); [2021-12-14 18:17:20,397 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 18:17:20,409 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 18:17:20,409 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 18:17:20,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:17:20 BoogieIcfgContainer [2021-12-14 18:17:20,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 18:17:20,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 18:17:20,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 18:17:20,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 18:17:20,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:17:15" (1/3) ... [2021-12-14 18:17:20,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c18912d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:17:20, skipping insertion in model container [2021-12-14 18:17:20,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:17:17" (2/3) ... [2021-12-14 18:17:20,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c18912d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:17:20, skipping insertion in model container [2021-12-14 18:17:20,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:17:20" (3/3) ... [2021-12-14 18:17:20,418 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--hp--hp100.ko-entry_point.cil.out.i [2021-12-14 18:17:20,421 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 18:17:20,421 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 18:17:20,452 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 18:17:20,456 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 18:17:20,456 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 18:17:20,486 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) [2021-12-14 18:17:20,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 18:17:20,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:17:20,502 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] [2021-12-14 18:17:20,502 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:17:20,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:17:20,505 INFO L85 PathProgramCache]: Analyzing trace with hash 740841460, now seen corresponding path program 1 times [2021-12-14 18:17:20,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:17:20,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670496991] [2021-12-14 18:17:20,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:17:20,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:17:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:20,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:17:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:20,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:20,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:20,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:17:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:20,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:20,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:20,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:17:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:20,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:20,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:20,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:17:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:21,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:21,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:21,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:17:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:21,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:21,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:21,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 18:17:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:21,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:21,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 18:17:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:21,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:21,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-14 18:17:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:21,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-14 18:17:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:21,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 18:17:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:21,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 18:17:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:21,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-14 18:17:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:21,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-14 18:17:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:21,168 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-14 18:17:21,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:17:21,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670496991] [2021-12-14 18:17:21,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670496991] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:17:21,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:17:21,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:17:21,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886876663] [2021-12-14 18:17:21,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:17:21,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:17:21,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:17:21,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:17:21,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:17:21,208 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) [2021-12-14 18:17:24,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:17:24,581 INFO L93 Difference]: Finished difference Result 3398 states and 5191 transitions. [2021-12-14 18:17:24,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:17:24,584 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 [2021-12-14 18:17:24,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:17:24,603 INFO L225 Difference]: With dead ends: 3398 [2021-12-14 18:17:24,603 INFO L226 Difference]: Without dead ends: 1751 [2021-12-14 18:17:24,620 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 [2021-12-14 18:17:24,622 INFO L933 BasicCegarLoop]: 2023 mSDtfsCounter, 2012 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 2592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 4016 SdHoareTripleChecker+Invalid, 4302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2592 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-14 18:17:24,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2053 Valid, 4016 Invalid, 4302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2592 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-14 18:17:24,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2021-12-14 18:17:24,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1606. [2021-12-14 18:17:24,737 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) [2021-12-14 18:17:24,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2408 transitions. [2021-12-14 18:17:24,749 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2408 transitions. Word has length 167 [2021-12-14 18:17:24,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:17:24,749 INFO L470 AbstractCegarLoop]: Abstraction has 1606 states and 2408 transitions. [2021-12-14 18:17:24,749 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) [2021-12-14 18:17:24,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2408 transitions. [2021-12-14 18:17:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-14 18:17:24,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:17:24,755 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] [2021-12-14 18:17:24,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 18:17:24,755 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:17:24,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:17:24,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1077778858, now seen corresponding path program 1 times [2021-12-14 18:17:24,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:17:24,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515031057] [2021-12-14 18:17:24,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:17:24,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:17:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:24,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:17:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:17:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:17:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:17:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:17:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 18:17:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 18:17:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-14 18:17:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-14 18:17:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-14 18:17:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-14 18:17:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-14 18:17:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-14 18:17:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:25,191 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-14 18:17:25,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:17:25,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515031057] [2021-12-14 18:17:25,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515031057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:17:25,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:17:25,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 18:17:25,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534900615] [2021-12-14 18:17:25,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:17:25,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 18:17:25,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:17:25,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 18:17:25,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:17:25,195 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) [2021-12-14 18:17:32,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:17:32,611 INFO L93 Difference]: Finished difference Result 5068 states and 7677 transitions. [2021-12-14 18:17:32,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 18:17:32,611 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 [2021-12-14 18:17:32,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:17:32,630 INFO L225 Difference]: With dead ends: 5068 [2021-12-14 18:17:32,630 INFO L226 Difference]: Without dead ends: 3484 [2021-12-14 18:17:32,639 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 [2021-12-14 18:17:32,640 INFO L933 BasicCegarLoop]: 2522 mSDtfsCounter, 6255 mSDsluCounter, 6715 mSDsCounter, 0 mSdLazyCounter, 6012 mSolverCounterSat, 7104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6506 SdHoareTripleChecker+Valid, 9237 SdHoareTripleChecker+Invalid, 13116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7104 IncrementalHoareTripleChecker+Valid, 6012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-12-14 18:17:32,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6506 Valid, 9237 Invalid, 13116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7104 Valid, 6012 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-12-14 18:17:32,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3484 states. [2021-12-14 18:17:32,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3484 to 3184. [2021-12-14 18:17:32,866 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) [2021-12-14 18:17:32,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4780 transitions. [2021-12-14 18:17:32,917 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4780 transitions. Word has length 167 [2021-12-14 18:17:32,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:17:32,918 INFO L470 AbstractCegarLoop]: Abstraction has 3184 states and 4780 transitions. [2021-12-14 18:17:32,918 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) [2021-12-14 18:17:32,920 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4780 transitions. [2021-12-14 18:17:32,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-14 18:17:32,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:17:32,934 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] [2021-12-14 18:17:32,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 18:17:32,934 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:17:32,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:17:32,935 INFO L85 PathProgramCache]: Analyzing trace with hash -198068825, now seen corresponding path program 1 times [2021-12-14 18:17:32,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:17:32,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228018640] [2021-12-14 18:17:32,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:17:32,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:17:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:17:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:17:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:17:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:17:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:17:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 18:17:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 18:17:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-14 18:17:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 18:17:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 18:17:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-14 18:17:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-14 18:17:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-14 18:17:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-14 18:17:33,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:17:33,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228018640] [2021-12-14 18:17:33,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228018640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:17:33,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:17:33,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 18:17:33,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607647246] [2021-12-14 18:17:33,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:17:33,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 18:17:33,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:17:33,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 18:17:33,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:17:33,255 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) [2021-12-14 18:17:40,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:17:40,922 INFO L93 Difference]: Finished difference Result 10100 states and 15305 transitions. [2021-12-14 18:17:40,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 18:17:40,922 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 [2021-12-14 18:17:40,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:17:40,971 INFO L225 Difference]: With dead ends: 10100 [2021-12-14 18:17:40,971 INFO L226 Difference]: Without dead ends: 6938 [2021-12-14 18:17:40,983 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 [2021-12-14 18:17:40,984 INFO L933 BasicCegarLoop]: 2426 mSDtfsCounter, 5332 mSDsluCounter, 7289 mSDsCounter, 0 mSdLazyCounter, 6679 mSolverCounterSat, 5565 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5584 SdHoareTripleChecker+Valid, 9715 SdHoareTripleChecker+Invalid, 12244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5565 IncrementalHoareTripleChecker+Valid, 6679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-12-14 18:17:40,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5584 Valid, 9715 Invalid, 12244 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5565 Valid, 6679 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2021-12-14 18:17:40,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6938 states. [2021-12-14 18:17:41,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6938 to 6346. [2021-12-14 18:17:41,226 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) [2021-12-14 18:17:41,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6346 states to 6346 states and 9532 transitions. [2021-12-14 18:17:41,250 INFO L78 Accepts]: Start accepts. Automaton has 6346 states and 9532 transitions. Word has length 169 [2021-12-14 18:17:41,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:17:41,250 INFO L470 AbstractCegarLoop]: Abstraction has 6346 states and 9532 transitions. [2021-12-14 18:17:41,251 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) [2021-12-14 18:17:41,251 INFO L276 IsEmpty]: Start isEmpty. Operand 6346 states and 9532 transitions. [2021-12-14 18:17:41,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 18:17:41,255 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:17:41,255 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] [2021-12-14 18:17:41,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 18:17:41,256 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:17:41,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:17:41,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2105470557, now seen corresponding path program 1 times [2021-12-14 18:17:41,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:17:41,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990362935] [2021-12-14 18:17:41,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:17:41,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:17:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:17:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:17:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:17:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:17:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:17:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 18:17:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 18:17:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-14 18:17:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-14 18:17:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-14 18:17:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:17:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-14 18:17:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 18:17:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-14 18:17:41,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:17:41,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990362935] [2021-12-14 18:17:41,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990362935] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:17:41,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:17:41,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 18:17:41,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075013935] [2021-12-14 18:17:41,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:17:41,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 18:17:41,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:17:41,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 18:17:41,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:17:41,635 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) [2021-12-14 18:17:47,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:17:47,836 INFO L93 Difference]: Finished difference Result 20174 states and 30570 transitions. [2021-12-14 18:17:47,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 18:17:47,837 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 [2021-12-14 18:17:47,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:17:47,915 INFO L225 Difference]: With dead ends: 20174 [2021-12-14 18:17:47,915 INFO L226 Difference]: Without dead ends: 13850 [2021-12-14 18:17:47,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-14 18:17:47,941 INFO L933 BasicCegarLoop]: 2431 mSDtfsCounter, 6519 mSDsluCounter, 6637 mSDsCounter, 0 mSdLazyCounter, 5922 mSolverCounterSat, 7185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6770 SdHoareTripleChecker+Valid, 9068 SdHoareTripleChecker+Invalid, 13107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7185 IncrementalHoareTripleChecker+Valid, 5922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-14 18:17:47,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6770 Valid, 9068 Invalid, 13107 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7185 Valid, 5922 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-12-14 18:17:47,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13850 states. [2021-12-14 18:17:48,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13850 to 12672. [2021-12-14 18:17:48,596 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) [2021-12-14 18:17:48,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12672 states to 12672 states and 19036 transitions. [2021-12-14 18:17:48,667 INFO L78 Accepts]: Start accepts. Automaton has 12672 states and 19036 transitions. Word has length 168 [2021-12-14 18:17:48,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:17:48,667 INFO L470 AbstractCegarLoop]: Abstraction has 12672 states and 19036 transitions. [2021-12-14 18:17:48,668 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) [2021-12-14 18:17:48,668 INFO L276 IsEmpty]: Start isEmpty. Operand 12672 states and 19036 transitions. [2021-12-14 18:17:48,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-14 18:17:48,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:17:48,677 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] [2021-12-14 18:17:48,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 18:17:48,677 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:17:48,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:17:48,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1604410682, now seen corresponding path program 1 times [2021-12-14 18:17:48,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:17:48,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502039429] [2021-12-14 18:17:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:17:48,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:17:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:17:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:17:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:17:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:17:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:17:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 18:17:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 18:17:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-14 18:17:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-14 18:17:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 18:17:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-14 18:17:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-14 18:17:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 18:17:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-14 18:17:48,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:17:48,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502039429] [2021-12-14 18:17:48,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502039429] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:17:48,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:17:48,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 18:17:48,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888622222] [2021-12-14 18:17:48,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:17:48,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 18:17:48,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:17:48,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 18:17:48,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:17:48,934 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) [2021-12-14 18:17:55,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:17:55,736 INFO L93 Difference]: Finished difference Result 40084 states and 60722 transitions. [2021-12-14 18:17:55,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 18:17:55,736 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 [2021-12-14 18:17:55,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:17:55,862 INFO L225 Difference]: With dead ends: 40084 [2021-12-14 18:17:55,863 INFO L226 Difference]: Without dead ends: 27434 [2021-12-14 18:17:55,919 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 [2021-12-14 18:17:55,920 INFO L933 BasicCegarLoop]: 2207 mSDtfsCounter, 5670 mSDsluCounter, 6902 mSDsCounter, 0 mSdLazyCounter, 6362 mSolverCounterSat, 5894 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5921 SdHoareTripleChecker+Valid, 9109 SdHoareTripleChecker+Invalid, 12256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5894 IncrementalHoareTripleChecker+Valid, 6362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-12-14 18:17:55,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5921 Valid, 9109 Invalid, 12256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5894 Valid, 6362 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-12-14 18:17:55,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27434 states. [2021-12-14 18:17:57,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27434 to 25165. [2021-12-14 18:17:57,246 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) [2021-12-14 18:17:57,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25165 states to 25165 states and 37816 transitions. [2021-12-14 18:17:57,357 INFO L78 Accepts]: Start accepts. Automaton has 25165 states and 37816 transitions. Word has length 170 [2021-12-14 18:17:57,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:17:57,358 INFO L470 AbstractCegarLoop]: Abstraction has 25165 states and 37816 transitions. [2021-12-14 18:17:57,358 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) [2021-12-14 18:17:57,358 INFO L276 IsEmpty]: Start isEmpty. Operand 25165 states and 37816 transitions. [2021-12-14 18:17:57,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-12-14 18:17:57,365 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:17:57,366 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] [2021-12-14 18:17:57,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 18:17:57,366 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:17:57,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:17:57,366 INFO L85 PathProgramCache]: Analyzing trace with hash 482038512, now seen corresponding path program 1 times [2021-12-14 18:17:57,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:17:57,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357354849] [2021-12-14 18:17:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:17:57,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:17:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:17:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 18:17:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 18:17:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 18:17:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:17:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:17:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 18:17:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-14 18:17:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:17:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-14 18:17:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-14 18:17:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-14 18:17:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-14 18:17:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-14 18:17:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-14 18:17:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-14 18:17:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:57,640 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-12-14 18:17:57,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:17:57,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357354849] [2021-12-14 18:17:57,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357354849] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 18:17:57,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901282246] [2021-12-14 18:17:57,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:17:57,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:17:57,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:17:57,655 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) [2021-12-14 18:17:57,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 18:17:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:17:58,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 2196 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 18:17:58,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 18:17:58,725 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-12-14 18:17:58,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 18:17:58,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901282246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:17:58,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 18:17:58,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-12-14 18:17:58,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125073461] [2021-12-14 18:17:58,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:17:58,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 18:17:58,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:17:58,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 18:17:58,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-14 18:17:58,727 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) [2021-12-14 18:17:59,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:17:59,711 INFO L93 Difference]: Finished difference Result 50473 states and 75875 transitions. [2021-12-14 18:17:59,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 18:17:59,712 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 [2021-12-14 18:17:59,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:17:59,834 INFO L225 Difference]: With dead ends: 50473 [2021-12-14 18:17:59,834 INFO L226 Difference]: Without dead ends: 25330 [2021-12-14 18:17:59,937 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 [2021-12-14 18:17:59,938 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 [2021-12-14 18:17:59,938 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] [2021-12-14 18:17:59,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25330 states. [2021-12-14 18:18:00,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25330 to 25180. [2021-12-14 18:18:00,997 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) [2021-12-14 18:18:01,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25180 states to 25180 states and 37831 transitions. [2021-12-14 18:18:01,109 INFO L78 Accepts]: Start accepts. Automaton has 25180 states and 37831 transitions. Word has length 180 [2021-12-14 18:18:01,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:18:01,110 INFO L470 AbstractCegarLoop]: Abstraction has 25180 states and 37831 transitions. [2021-12-14 18:18:01,110 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) [2021-12-14 18:18:01,110 INFO L276 IsEmpty]: Start isEmpty. Operand 25180 states and 37831 transitions. [2021-12-14 18:18:01,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-14 18:18:01,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:18:01,117 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] [2021-12-14 18:18:01,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 18:18:01,331 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 [2021-12-14 18:18:01,332 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:18:01,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:18:01,332 INFO L85 PathProgramCache]: Analyzing trace with hash 2079713895, now seen corresponding path program 1 times [2021-12-14 18:18:01,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:18:01,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140470406] [2021-12-14 18:18:01,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:01,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:18:01,392 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 18:18:01,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595766305] [2021-12-14 18:18:01,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:01,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:18:01,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:18:01,394 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) [2021-12-14 18:18:01,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 18:18:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:02,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 18:18:02,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 18:18:02,296 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-12-14 18:18:02,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 18:18:02,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:18:02,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140470406] [2021-12-14 18:18:02,297 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 18:18:02,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595766305] [2021-12-14 18:18:02,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595766305] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:18:02,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:18:02,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 18:18:02,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231805156] [2021-12-14 18:18:02,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:18:02,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:18:02,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:18:02,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:18:02,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:18:02,300 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) [2021-12-14 18:18:03,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:18:03,852 INFO L93 Difference]: Finished difference Result 63018 states and 94683 transitions. [2021-12-14 18:18:03,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 18:18:03,852 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 [2021-12-14 18:18:03,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:18:04,041 INFO L225 Difference]: With dead ends: 63018 [2021-12-14 18:18:04,041 INFO L226 Difference]: Without dead ends: 37860 [2021-12-14 18:18:04,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-12-14 18:18:04,149 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, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 18:18:04,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2432 Valid, 19701 Invalid, 75 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 18:18:04,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37860 states. [2021-12-14 18:18:05,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37860 to 37711. [2021-12-14 18:18:05,942 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) [2021-12-14 18:18:06,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37711 states to 37711 states and 56707 transitions. [2021-12-14 18:18:06,182 INFO L78 Accepts]: Start accepts. Automaton has 37711 states and 56707 transitions. Word has length 184 [2021-12-14 18:18:06,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:18:06,183 INFO L470 AbstractCegarLoop]: Abstraction has 37711 states and 56707 transitions. [2021-12-14 18:18:06,183 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) [2021-12-14 18:18:06,183 INFO L276 IsEmpty]: Start isEmpty. Operand 37711 states and 56707 transitions. [2021-12-14 18:18:06,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-14 18:18:06,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:18:06,195 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] [2021-12-14 18:18:06,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 18:18:06,416 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 [2021-12-14 18:18:06,417 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:18:06,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:18:06,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1028835409, now seen corresponding path program 1 times [2021-12-14 18:18:06,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:18:06,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865079056] [2021-12-14 18:18:06,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:06,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:18:06,510 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 18:18:06,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646792794] [2021-12-14 18:18:06,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:06,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:18:06,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:18:06,512 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) [2021-12-14 18:18:06,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 18:18:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:07,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 2228 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 18:18:07,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 18:18:07,554 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-12-14 18:18:07,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 18:18:07,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:18:07,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865079056] [2021-12-14 18:18:07,555 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 18:18:07,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646792794] [2021-12-14 18:18:07,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646792794] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:18:07,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:18:07,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 18:18:07,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573623883] [2021-12-14 18:18:07,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:18:07,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:18:07,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:18:07,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:18:07,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:18:07,557 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) [2021-12-14 18:18:09,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:18:09,511 INFO L93 Difference]: Finished difference Result 88133 states and 132481 transitions. [2021-12-14 18:18:09,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 18:18:09,512 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 [2021-12-14 18:18:09,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:18:09,843 INFO L225 Difference]: With dead ends: 88133 [2021-12-14 18:18:09,843 INFO L226 Difference]: Without dead ends: 50444 [2021-12-14 18:18:09,989 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 [2021-12-14 18:18:09,990 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 [2021-12-14 18:18:09,990 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] [2021-12-14 18:18:10,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50444 states. [2021-12-14 18:18:12,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50444 to 50274. [2021-12-14 18:18:12,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50274 states, 31703 states have (on average 1.3426489606661831) internal successors, (42566), 33169 states have internal predecessors, (42566), 16382 states have call successors, (16382), 2161 states have call predecessors, (16382), 2188 states have return successors, (16667), 15821 states have call predecessors, (16667), 16381 states have call successors, (16667) [2021-12-14 18:18:12,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50274 states to 50274 states and 75615 transitions. [2021-12-14 18:18:12,567 INFO L78 Accepts]: Start accepts. Automaton has 50274 states and 75615 transitions. Word has length 185 [2021-12-14 18:18:12,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:18:12,568 INFO L470 AbstractCegarLoop]: Abstraction has 50274 states and 75615 transitions. [2021-12-14 18:18:12,568 INFO L471 AbstractCegarLoop]: INTERPOLANT 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) [2021-12-14 18:18:12,568 INFO L276 IsEmpty]: Start isEmpty. Operand 50274 states and 75615 transitions. [2021-12-14 18:18:12,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-14 18:18:12,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:18:12,583 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, 1] [2021-12-14 18:18:12,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-14 18:18:12,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:18:12,800 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:18:12,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:18:12,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1462652096, now seen corresponding path program 1 times [2021-12-14 18:18:12,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:18:12,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084669046] [2021-12-14 18:18:12,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:12,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:18:12,879 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 18:18:12,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669936775] [2021-12-14 18:18:12,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:18:12,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 18:18:12,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:18:12,896 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 18:18:12,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 18:18:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:18:13,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 2230 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 18:18:13,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 18:18:13,727 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-12-14 18:18:13,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 18:18:13,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:18:13,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084669046] [2021-12-14 18:18:13,727 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 18:18:13,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669936775] [2021-12-14 18:18:13,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669936775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:18:13,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:18:13,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 18:18:13,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929102358] [2021-12-14 18:18:13,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:18:13,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:18:13,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:18:13,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:18:13,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:18:13,728 INFO L87 Difference]: Start difference. First operand 50274 states and 75615 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 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)