./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.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 10fde7a37a019b1c929db0077997db096e3fd4889a12d96c2c2befe2c5cd6fdf --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:49:55,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:49:55,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:49:55,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:49:55,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:49:55,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:49:55,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:49:55,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:49:55,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:49:55,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:49:55,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:49:55,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:49:55,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:49:55,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:49:55,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:49:55,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:49:55,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:49:55,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:49:55,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:49:55,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:49:55,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:49:55,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:49:55,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:49:55,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:49:55,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:49:55,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:49:55,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:49:55,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:49:55,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:49:55,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:49:55,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:49:55,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:49:55,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:49:55,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:49:55,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:49:55,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:49:55,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:49:55,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:49:55,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:49:55,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:49:55,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:49:56,004 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:49:56,020 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:49:56,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:49:56,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:49:56,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:49:56,022 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:49:56,022 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:49:56,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:49:56,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:49:56,023 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:49:56,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:49:56,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:49:56,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:49:56,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:49:56,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:49:56,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:49:56,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:49:56,024 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:49:56,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:49:56,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:49:56,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:49:56,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:49:56,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:49:56,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:49:56,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:49:56,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:49:56,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:49:56,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:49:56,026 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:49:56,026 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:49:56,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:49:56,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:49:56,026 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10fde7a37a019b1c929db0077997db096e3fd4889a12d96c2c2befe2c5cd6fdf [2021-12-14 17:49:56,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:49:56,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:49:56,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:49:56,247 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:49:56,248 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:49:56,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2021-12-14 17:49:56,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c55825ab/72f9c34910074012966026650a8f82eb/FLAGb81c71aaa [2021-12-14 17:49:56,927 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:49:56,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2021-12-14 17:49:56,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c55825ab/72f9c34910074012966026650a8f82eb/FLAGb81c71aaa [2021-12-14 17:49:57,346 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c55825ab/72f9c34910074012966026650a8f82eb [2021-12-14 17:49:57,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:49:57,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:49:57,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:49:57,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:49:57,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:49:57,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:49:57" (1/1) ... [2021-12-14 17:49:57,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70738f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:57, skipping insertion in model container [2021-12-14 17:49:57,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:49:57" (1/1) ... [2021-12-14 17:49:57,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:49:57,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:49:57,875 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5272] [2021-12-14 17:49:57,875 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5273-5274] [2021-12-14 17:49:58,050 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i[161168,161181] [2021-12-14 17:49:58,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:49:58,918 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:49:59,018 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5272] [2021-12-14 17:49:59,019 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5273-5274] [2021-12-14 17:49:59,032 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i[161168,161181] [2021-12-14 17:49:59,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:49:59,323 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:49:59,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:59 WrapperNode [2021-12-14 17:49:59,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:49:59,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:49:59,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:49:59,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:49:59,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:59" (1/1) ... [2021-12-14 17:49:59,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:59" (1/1) ... [2021-12-14 17:49:59,603 INFO L137 Inliner]: procedures = 281, calls = 1587, calls flagged for inlining = 160, calls inlined = 157, statements flattened = 4353 [2021-12-14 17:49:59,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:49:59,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:49:59,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:49:59,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:49:59,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:59" (1/1) ... [2021-12-14 17:49:59,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:59" (1/1) ... [2021-12-14 17:49:59,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:59" (1/1) ... [2021-12-14 17:49:59,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:59" (1/1) ... [2021-12-14 17:49:59,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:59" (1/1) ... [2021-12-14 17:49:59,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:59" (1/1) ... [2021-12-14 17:49:59,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:59" (1/1) ... [2021-12-14 17:49:59,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:49:59,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:49:59,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:49:59,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:49:59,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:59" (1/1) ... [2021-12-14 17:49:59,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:49:59,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:49:59,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:49:59,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:49:59,917 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_rxfilter [2021-12-14 17:49:59,917 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_rxfilter [2021-12-14 17:49:59,917 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-12-14 17:49:59,917 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-12-14 17:49:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-14 17:49:59,918 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-14 17:49:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 17:49:59,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 17:49:59,918 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-12-14 17:49:59,918 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-12-14 17:49:59,919 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-14 17:49:59,919 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-14 17:49:59,919 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-12-14 17:49:59,919 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-12-14 17:49:59,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-14 17:49:59,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-14 17:49:59,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:49:59,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:49:59,920 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_reset [2021-12-14 17:49:59,920 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_reset [2021-12-14 17:49:59,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:49:59,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:49:59,921 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-14 17:49:59,921 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-14 17:49:59,921 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-12-14 17:49:59,921 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-12-14 17:49:59,921 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-14 17:49:59,921 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-14 17:49:59,921 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-12-14 17:49:59,922 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-12-14 17:49:59,922 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_default_phy [2021-12-14 17:49:59,922 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_default_phy [2021-12-14 17:49:59,922 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-12-14 17:49:59,922 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-12-14 17:49:59,922 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:49:59,922 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:49:59,923 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-12-14 17:49:59,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-12-14 17:49:59,923 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-14 17:49:59,923 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-14 17:49:59,923 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-12-14 17:49:59,923 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-12-14 17:49:59,923 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-12-14 17:49:59,924 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-12-14 17:49:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_check_mode [2021-12-14 17:49:59,924 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_check_mode [2021-12-14 17:49:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-14 17:49:59,924 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-14 17:49:59,924 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2021-12-14 17:49:59,924 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2021-12-14 17:49:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-12-14 17:49:59,925 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-12-14 17:49:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:49:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-14 17:49:59,925 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-14 17:49:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-14 17:49:59,925 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-14 17:49:59,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:49:59,926 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-12-14 17:49:59,926 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-12-14 17:49:59,926 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-12-14 17:49:59,926 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-12-14 17:49:59,926 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-14 17:49:59,927 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-14 17:49:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-12-14 17:49:59,927 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-12-14 17:49:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-14 17:49:59,927 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-14 17:49:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-14 17:49:59,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-14 17:49:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-12-14 17:49:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_rx_ring [2021-12-14 17:49:59,928 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_rx_ring [2021-12-14 17:49:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_remove [2021-12-14 17:49:59,928 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_remove [2021-12-14 17:49:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 17:49:59,928 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 17:49:59,929 INFO L130 BoogieDeclarations]: Found specification of procedure sis630_set_eq [2021-12-14 17:49:59,929 INFO L138 BoogieDeclarations]: Found implementation of procedure sis630_set_eq [2021-12-14 17:49:59,929 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_device [2021-12-14 17:49:59,929 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_device [2021-12-14 17:49:59,929 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-14 17:49:59,929 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-14 17:49:59,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:49:59,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:49:59,930 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-12-14 17:49:59,931 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-12-14 17:49:59,931 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-12-14 17:49:59,931 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-12-14 17:49:59,931 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-14 17:49:59,931 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-14 17:49:59,932 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_tx_ring [2021-12-14 17:49:59,932 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_tx_ring [2021-12-14 17:49:59,932 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-14 17:49:59,932 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-14 17:49:59,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-14 17:49:59,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-14 17:49:59,933 INFO L130 BoogieDeclarations]: Found specification of procedure eth_hw_addr_random [2021-12-14 17:49:59,933 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_hw_addr_random [2021-12-14 17:49:59,934 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-12-14 17:49:59,934 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-12-14 17:49:59,934 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-14 17:49:59,934 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-14 17:49:59,934 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-12-14 17:49:59,934 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-12-14 17:49:59,934 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_set_mode [2021-12-14 17:49:59,934 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_set_mode [2021-12-14 17:49:59,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:49:59,935 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_poll [2021-12-14 17:49:59,935 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_poll [2021-12-14 17:49:59,935 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-12-14 17:49:59,935 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-12-14 17:49:59,936 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-14 17:49:59,936 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-14 17:49:59,937 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-14 17:49:59,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-14 17:49:59,940 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-12-14 17:49:59,940 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-12-14 17:49:59,940 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-14 17:49:59,942 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-14 17:49:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-14 17:49:59,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-14 17:49:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:49:59,943 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:49:59,948 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-12-14 17:49:59,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-12-14 17:49:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-14 17:49:59,949 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-14 17:49:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:49:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-14 17:49:59,949 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-14 17:49:59,949 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_interrupt [2021-12-14 17:49:59,949 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_interrupt [2021-12-14 17:49:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:49:59,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:49:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_reset_phy [2021-12-14 17:49:59,950 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_reset_phy [2021-12-14 17:49:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_set_config [2021-12-14 17:49:59,950 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_set_config [2021-12-14 17:49:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:49:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dev_put [2021-12-14 17:49:59,951 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dev_put [2021-12-14 17:49:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:49:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_idle [2021-12-14 17:49:59,951 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_idle [2021-12-14 17:49:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:49:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-12-14 17:49:59,951 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-12-14 17:49:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-14 17:49:59,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-14 17:49:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2021-12-14 17:49:59,952 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2021-12-14 17:49:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-14 17:49:59,952 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-14 17:49:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_tx_timeout [2021-12-14 17:49:59,952 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_tx_timeout [2021-12-14 17:49:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-14 17:49:59,953 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-14 17:49:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ioctl [2021-12-14 17:49:59,953 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ioctl [2021-12-14 17:49:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-12-14 17:49:59,953 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-12-14 17:49:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-14 17:49:59,953 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-14 17:49:59,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:49:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-12-14 17:49:59,954 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-12-14 17:49:59,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:49:59,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:50:00,564 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:50:00,567 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:50:00,763 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 17:50:02,725 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:50:02,739 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:50:02,740 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 17:50:02,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:50:02 BoogieIcfgContainer [2021-12-14 17:50:02,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:50:02,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:50:02,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:50:02,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:50:02,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:49:57" (1/3) ... [2021-12-14 17:50:02,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5238a467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:50:02, skipping insertion in model container [2021-12-14 17:50:02,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:49:59" (2/3) ... [2021-12-14 17:50:02,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5238a467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:50:02, skipping insertion in model container [2021-12-14 17:50:02,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:50:02" (3/3) ... [2021-12-14 17:50:02,751 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2021-12-14 17:50:02,755 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:50:02,756 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:50:02,802 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:50:02,806 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:50:02,806 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:50:02,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 1685 states, 1169 states have (on average 1.3250641573994868) internal successors, (1549), 1196 states have internal predecessors, (1549), 437 states have call successors, (437), 78 states have call predecessors, (437), 77 states have return successors, (430), 426 states have call predecessors, (430), 430 states have call successors, (430) [2021-12-14 17:50:02,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-14 17:50:02,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:50:02,906 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-14 17:50:02,907 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:50:02,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:50:02,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1357541251, now seen corresponding path program 1 times [2021-12-14 17:50:02,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:50:02,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084771695] [2021-12-14 17:50:02,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:50:02,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:50:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:03,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:50:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:03,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:50:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:03,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:50:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:03,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:50:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:03,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:50:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:03,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:50:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:03,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 17:50:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:03,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 17:50:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:03,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 17:50:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:03,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:50:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:03,383 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-14 17:50:03,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:50:03,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084771695] [2021-12-14 17:50:03,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084771695] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:50:03,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:50:03,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:50:03,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257174945] [2021-12-14 17:50:03,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:50:03,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:50:03,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:50:03,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:50:03,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:50:03,410 INFO L87 Difference]: Start difference. First operand has 1685 states, 1169 states have (on average 1.3250641573994868) internal successors, (1549), 1196 states have internal predecessors, (1549), 437 states have call successors, (437), 78 states have call predecessors, (437), 77 states have return successors, (430), 426 states have call predecessors, (430), 430 states have call successors, (430) Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-14 17:50:09,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:50:09,319 INFO L93 Difference]: Finished difference Result 5294 states and 7735 transitions. [2021-12-14 17:50:09,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 17:50:09,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2021-12-14 17:50:09,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:50:09,362 INFO L225 Difference]: With dead ends: 5294 [2021-12-14 17:50:09,364 INFO L226 Difference]: Without dead ends: 3576 [2021-12-14 17:50:09,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-12-14 17:50:09,385 INFO L933 BasicCegarLoop]: 2472 mSDtfsCounter, 4378 mSDsluCounter, 6961 mSDsCounter, 0 mSdLazyCounter, 5083 mSolverCounterSat, 2893 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4690 SdHoareTripleChecker+Valid, 9433 SdHoareTripleChecker+Invalid, 7976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2893 IncrementalHoareTripleChecker+Valid, 5083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:50:09,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4690 Valid, 9433 Invalid, 7976 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2893 Valid, 5083 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-12-14 17:50:09,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3576 states. [2021-12-14 17:50:09,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3576 to 3307. [2021-12-14 17:50:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3307 states, 2300 states have (on average 1.3139130434782609) internal successors, (3022), 2340 states have internal predecessors, (3022), 853 states have call successors, (853), 154 states have call predecessors, (853), 153 states have return successors, (852), 840 states have call predecessors, (852), 852 states have call successors, (852) [2021-12-14 17:50:09,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3307 states to 3307 states and 4727 transitions. [2021-12-14 17:50:09,614 INFO L78 Accepts]: Start accepts. Automaton has 3307 states and 4727 transitions. Word has length 92 [2021-12-14 17:50:09,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:50:09,616 INFO L470 AbstractCegarLoop]: Abstraction has 3307 states and 4727 transitions. [2021-12-14 17:50:09,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-14 17:50:09,616 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 4727 transitions. [2021-12-14 17:50:09,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 17:50:09,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:50:09,627 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-14 17:50:09,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:50:09,628 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:50:09,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:50:09,628 INFO L85 PathProgramCache]: Analyzing trace with hash -454809615, now seen corresponding path program 1 times [2021-12-14 17:50:09,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:50:09,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986435157] [2021-12-14 17:50:09,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:50:09,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:50:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:09,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:50:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:09,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:50:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:09,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:50:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:09,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:50:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:09,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:50:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:09,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:50:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:09,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 17:50:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:09,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 17:50:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:09,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 17:50:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:09,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 17:50:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:09,933 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-14 17:50:09,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:50:09,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986435157] [2021-12-14 17:50:09,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986435157] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:50:09,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:50:09,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:50:09,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860871995] [2021-12-14 17:50:09,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:50:09,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:50:09,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:50:09,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:50:09,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:50:09,936 INFO L87 Difference]: Start difference. First operand 3307 states and 4727 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-14 17:50:15,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:50:15,034 INFO L93 Difference]: Finished difference Result 10419 states and 14995 transitions. [2021-12-14 17:50:15,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 17:50:15,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 93 [2021-12-14 17:50:15,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:50:15,084 INFO L225 Difference]: With dead ends: 10419 [2021-12-14 17:50:15,084 INFO L226 Difference]: Without dead ends: 7129 [2021-12-14 17:50:15,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-12-14 17:50:15,107 INFO L933 BasicCegarLoop]: 2393 mSDtfsCounter, 4361 mSDsluCounter, 6780 mSDsCounter, 0 mSdLazyCounter, 5008 mSolverCounterSat, 2876 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4671 SdHoareTripleChecker+Valid, 9173 SdHoareTripleChecker+Invalid, 7884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2876 IncrementalHoareTripleChecker+Valid, 5008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:50:15,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4671 Valid, 9173 Invalid, 7884 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2876 Valid, 5008 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-14 17:50:15,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7129 states. [2021-12-14 17:50:15,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7129 to 6596. [2021-12-14 17:50:15,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6596 states, 4590 states have (on average 1.3132897603485838) internal successors, (6028), 4669 states have internal predecessors, (6028), 1698 states have call successors, (1698), 308 states have call predecessors, (1698), 307 states have return successors, (1697), 1674 states have call predecessors, (1697), 1697 states have call successors, (1697) [2021-12-14 17:50:15,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6596 states to 6596 states and 9423 transitions. [2021-12-14 17:50:15,451 INFO L78 Accepts]: Start accepts. Automaton has 6596 states and 9423 transitions. Word has length 93 [2021-12-14 17:50:15,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:50:15,452 INFO L470 AbstractCegarLoop]: Abstraction has 6596 states and 9423 transitions. [2021-12-14 17:50:15,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-14 17:50:15,452 INFO L276 IsEmpty]: Start isEmpty. Operand 6596 states and 9423 transitions. [2021-12-14 17:50:15,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-14 17:50:15,459 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:50:15,459 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-14 17:50:15,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:50:15,460 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:50:15,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:50:15,460 INFO L85 PathProgramCache]: Analyzing trace with hash 658135424, now seen corresponding path program 1 times [2021-12-14 17:50:15,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:50:15,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892219309] [2021-12-14 17:50:15,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:50:15,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:50:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:15,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:50:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:15,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:50:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:15,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:50:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:15,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:50:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:15,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:50:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:15,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:50:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:15,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:50:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:15,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:50:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:15,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:50:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:15,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:50:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:15,693 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-14 17:50:15,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:50:15,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892219309] [2021-12-14 17:50:15,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892219309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:50:15,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:50:15,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:50:15,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40432514] [2021-12-14 17:50:15,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:50:15,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:50:15,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:50:15,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:50:15,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:50:15,696 INFO L87 Difference]: Start difference. First operand 6596 states and 9423 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-14 17:50:21,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:50:21,149 INFO L93 Difference]: Finished difference Result 20821 states and 29933 transitions. [2021-12-14 17:50:21,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 17:50:21,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 94 [2021-12-14 17:50:21,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:50:21,222 INFO L225 Difference]: With dead ends: 20821 [2021-12-14 17:50:21,223 INFO L226 Difference]: Without dead ends: 14242 [2021-12-14 17:50:21,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-12-14 17:50:21,276 INFO L933 BasicCegarLoop]: 2361 mSDtfsCounter, 4369 mSDsluCounter, 6705 mSDsCounter, 0 mSdLazyCounter, 4995 mSolverCounterSat, 2906 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4680 SdHoareTripleChecker+Valid, 9066 SdHoareTripleChecker+Invalid, 7901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2906 IncrementalHoareTripleChecker+Valid, 4995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:50:21,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4680 Valid, 9066 Invalid, 7901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2906 Valid, 4995 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-12-14 17:50:21,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14242 states. [2021-12-14 17:50:21,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14242 to 13179. [2021-12-14 17:50:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13179 states, 9175 states have (on average 1.3126975476839238) internal successors, (12044), 9331 states have internal predecessors, (12044), 3387 states have call successors, (3387), 617 states have call predecessors, (3387), 616 states have return successors, (3386), 3342 states have call predecessors, (3386), 3386 states have call successors, (3386) [2021-12-14 17:50:21,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13179 states to 13179 states and 18817 transitions. [2021-12-14 17:50:21,875 INFO L78 Accepts]: Start accepts. Automaton has 13179 states and 18817 transitions. Word has length 94 [2021-12-14 17:50:21,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:50:21,875 INFO L470 AbstractCegarLoop]: Abstraction has 13179 states and 18817 transitions. [2021-12-14 17:50:21,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-14 17:50:21,876 INFO L276 IsEmpty]: Start isEmpty. Operand 13179 states and 18817 transitions. [2021-12-14 17:50:21,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-14 17:50:21,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:50:21,882 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-14 17:50:21,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:50:21,883 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:50:21,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:50:21,883 INFO L85 PathProgramCache]: Analyzing trace with hash -302238636, now seen corresponding path program 1 times [2021-12-14 17:50:21,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:50:21,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448730314] [2021-12-14 17:50:21,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:50:21,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:50:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:21,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:50:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:21,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:50:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:22,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:50:22,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:22,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:50:22,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:22,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:50:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:22,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:50:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:22,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 17:50:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:22,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 17:50:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:22,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:50:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:22,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 17:50:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:22,055 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-14 17:50:22,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:50:22,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448730314] [2021-12-14 17:50:22,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448730314] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:50:22,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:50:22,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:50:22,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366537551] [2021-12-14 17:50:22,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:50:22,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:50:22,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:50:22,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:50:22,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:50:22,058 INFO L87 Difference]: Start difference. First operand 13179 states and 18817 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-14 17:50:27,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:50:27,537 INFO L93 Difference]: Finished difference Result 41620 states and 59781 transitions. [2021-12-14 17:50:27,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 17:50:27,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 95 [2021-12-14 17:50:27,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:50:27,688 INFO L225 Difference]: With dead ends: 41620 [2021-12-14 17:50:27,689 INFO L226 Difference]: Without dead ends: 28458 [2021-12-14 17:50:27,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-12-14 17:50:27,768 INFO L933 BasicCegarLoop]: 2371 mSDtfsCounter, 4367 mSDsluCounter, 6729 mSDsCounter, 0 mSdLazyCounter, 5004 mSolverCounterSat, 2896 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4677 SdHoareTripleChecker+Valid, 9100 SdHoareTripleChecker+Invalid, 7900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2896 IncrementalHoareTripleChecker+Valid, 5004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:50:27,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4677 Valid, 9100 Invalid, 7900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2896 Valid, 5004 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-14 17:50:27,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28458 states. [2021-12-14 17:50:28,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28458 to 26343. [2021-12-14 17:50:28,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26343 states, 18345 states have (on average 1.3120741346415916) internal successors, (24070), 18653 states have internal predecessors, (24070), 6762 states have call successors, (6762), 1236 states have call predecessors, (6762), 1235 states have return successors, (6761), 6677 states have call predecessors, (6761), 6761 states have call successors, (6761) [2021-12-14 17:50:28,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26343 states to 26343 states and 37593 transitions. [2021-12-14 17:50:28,837 INFO L78 Accepts]: Start accepts. Automaton has 26343 states and 37593 transitions. Word has length 95 [2021-12-14 17:50:28,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:50:28,837 INFO L470 AbstractCegarLoop]: Abstraction has 26343 states and 37593 transitions. [2021-12-14 17:50:28,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-14 17:50:28,838 INFO L276 IsEmpty]: Start isEmpty. Operand 26343 states and 37593 transitions. [2021-12-14 17:50:28,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-14 17:50:28,846 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:50:28,846 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:50:28,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:50:28,846 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:50:28,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:50:28,847 INFO L85 PathProgramCache]: Analyzing trace with hash -320209748, now seen corresponding path program 1 times [2021-12-14 17:50:28,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:50:28,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125028880] [2021-12-14 17:50:28,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:50:28,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:50:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:28,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:50:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:28,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:50:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:28,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:50:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:28,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:50:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:28,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:50:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:28,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:50:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:28,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:50:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:28,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:50:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:28,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:50:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:29,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:50:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:29,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:50:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-12-14 17:50:29,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:50:29,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125028880] [2021-12-14 17:50:29,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125028880] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:50:29,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:50:29,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:50:29,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12845301] [2021-12-14 17:50:29,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:50:29,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:50:29,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:50:29,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:50:29,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:50:29,020 INFO L87 Difference]: Start difference. First operand 26343 states and 37593 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 17:50:33,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:50:33,748 INFO L93 Difference]: Finished difference Result 76739 states and 109734 transitions. [2021-12-14 17:50:33,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:50:33,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2021-12-14 17:50:33,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:50:34,127 INFO L225 Difference]: With dead ends: 76739 [2021-12-14 17:50:34,129 INFO L226 Difference]: Without dead ends: 50413 [2021-12-14 17:50:34,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:50:34,256 INFO L933 BasicCegarLoop]: 2302 mSDtfsCounter, 3791 mSDsluCounter, 3042 mSDsCounter, 0 mSdLazyCounter, 2672 mSolverCounterSat, 2592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4023 SdHoareTripleChecker+Valid, 5344 SdHoareTripleChecker+Invalid, 5264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2592 IncrementalHoareTripleChecker+Valid, 2672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:50:34,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4023 Valid, 5344 Invalid, 5264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2592 Valid, 2672 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-14 17:50:34,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50413 states. [2021-12-14 17:50:36,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50413 to 46845. [2021-12-14 17:50:36,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46845 states, 32715 states have (on average 1.3081461103469356) internal successors, (42796), 33313 states have internal predecessors, (42796), 11823 states have call successors, (11823), 2323 states have call predecessors, (11823), 2306 states have return successors, (11822), 11622 states have call predecessors, (11822), 11822 states have call successors, (11822) [2021-12-14 17:50:36,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46845 states to 46845 states and 66441 transitions. [2021-12-14 17:50:36,478 INFO L78 Accepts]: Start accepts. Automaton has 46845 states and 66441 transitions. Word has length 107 [2021-12-14 17:50:36,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:50:36,479 INFO L470 AbstractCegarLoop]: Abstraction has 46845 states and 66441 transitions. [2021-12-14 17:50:36,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 17:50:36,480 INFO L276 IsEmpty]: Start isEmpty. Operand 46845 states and 66441 transitions. [2021-12-14 17:50:36,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-14 17:50:36,483 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:50:36,483 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-14 17:50:36,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:50:36,484 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:50:36,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:50:36,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1559019951, now seen corresponding path program 1 times [2021-12-14 17:50:36,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:50:36,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477636375] [2021-12-14 17:50:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:50:36,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:50:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:36,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:50:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:36,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:50:36,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:36,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:50:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:36,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:50:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:36,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:50:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:36,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:50:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:36,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-14 17:50:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:36,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 17:50:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:36,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:50:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:36,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-14 17:50:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:36,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 17:50:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:36,676 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-12-14 17:50:36,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:50:36,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477636375] [2021-12-14 17:50:36,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477636375] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:50:36,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109034200] [2021-12-14 17:50:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:50:36,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:50:36,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:50:36,696 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 17:50:36,712 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 17:50:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:37,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 1947 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 17:50:37,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:50:37,540 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-14 17:50:37,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:50:37,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109034200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:50:37,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:50:37,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2021-12-14 17:50:37,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807201581] [2021-12-14 17:50:37,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:50:37,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:50:37,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:50:37,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:50:37,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-12-14 17:50:37,542 INFO L87 Difference]: Start difference. First operand 46845 states and 66441 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 17:50:39,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:50:39,555 INFO L93 Difference]: Finished difference Result 117365 states and 166419 transitions. [2021-12-14 17:50:39,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 17:50:39,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2021-12-14 17:50:39,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:50:40,027 INFO L225 Difference]: With dead ends: 117365 [2021-12-14 17:50:40,027 INFO L226 Difference]: Without dead ends: 70537 [2021-12-14 17:50:40,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2021-12-14 17:50:40,250 INFO L933 BasicCegarLoop]: 3048 mSDtfsCounter, 2399 mSDsluCounter, 14544 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2403 SdHoareTripleChecker+Valid, 17592 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:50:40,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2403 Valid, 17592 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 17:50:40,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70537 states. [2021-12-14 17:50:42,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70537 to 70242. [2021-12-14 17:50:42,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70242 states, 49070 states have (on average 1.3085592011412268) internal successors, (64211), 49986 states have internal predecessors, (64211), 17703 states have call successors, (17703), 3477 states have call predecessors, (17703), 3468 states have return successors, (17742), 17398 states have call predecessors, (17742), 17702 states have call successors, (17742) [2021-12-14 17:50:42,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70242 states to 70242 states and 99656 transitions. [2021-12-14 17:50:42,977 INFO L78 Accepts]: Start accepts. Automaton has 70242 states and 99656 transitions. Word has length 105 [2021-12-14 17:50:42,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:50:42,978 INFO L470 AbstractCegarLoop]: Abstraction has 70242 states and 99656 transitions. [2021-12-14 17:50:42,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 17:50:42,978 INFO L276 IsEmpty]: Start isEmpty. Operand 70242 states and 99656 transitions. [2021-12-14 17:50:42,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-14 17:50:42,984 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:50:42,984 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-14 17:50:43,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-14 17:50:43,207 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 17:50:43,208 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:50:43,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:50:43,208 INFO L85 PathProgramCache]: Analyzing trace with hash 121846562, now seen corresponding path program 1 times [2021-12-14 17:50:43,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:50:43,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885640922] [2021-12-14 17:50:43,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:50:43,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:50:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:43,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:50:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:43,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:50:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:43,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:50:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:43,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:50:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:43,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:50:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:43,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:50:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:43,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 17:50:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:43,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 17:50:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:43,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 17:50:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:43,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 17:50:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:43,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 17:50:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:43,513 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-14 17:50:43,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:50:43,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885640922] [2021-12-14 17:50:43,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885640922] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:50:43,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482068126] [2021-12-14 17:50:43,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:50:43,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:50:43,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:50:43,514 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 17:50:43,515 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 17:50:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:44,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 1949 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 17:50:44,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:50:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-14 17:50:44,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:50:44,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482068126] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:50:44,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:50:44,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-12-14 17:50:44,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572138693] [2021-12-14 17:50:44,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:50:44,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:50:44,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:50:44,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:50:44,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-12-14 17:50:44,480 INFO L87 Difference]: Start difference. First operand 70242 states and 99656 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 17:50:47,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:50:47,235 INFO L93 Difference]: Finished difference Result 164265 states and 232941 transitions. [2021-12-14 17:50:47,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 17:50:47,236 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2021-12-14 17:50:47,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:50:47,614 INFO L225 Difference]: With dead ends: 164265 [2021-12-14 17:50:47,615 INFO L226 Difference]: Without dead ends: 94040 [2021-12-14 17:50:47,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2021-12-14 17:50:47,837 INFO L933 BasicCegarLoop]: 3136 mSDtfsCounter, 2399 mSDsluCounter, 14884 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2403 SdHoareTripleChecker+Valid, 18020 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:50:47,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2403 Valid, 18020 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:50:47,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94040 states. [2021-12-14 17:50:50,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94040 to 93703. [2021-12-14 17:50:50,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93703 states, 65465 states have (on average 1.3085771022683876) internal successors, (85666), 66731 states have internal predecessors, (85666), 23583 states have call successors, (23583), 4631 states have call predecessors, (23583), 4654 states have return successors, (23686), 23166 states have call predecessors, (23686), 23582 states have call successors, (23686) [2021-12-14 17:50:51,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93703 states to 93703 states and 132935 transitions. [2021-12-14 17:50:51,302 INFO L78 Accepts]: Start accepts. Automaton has 93703 states and 132935 transitions. Word has length 106 [2021-12-14 17:50:51,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:50:51,307 INFO L470 AbstractCegarLoop]: Abstraction has 93703 states and 132935 transitions. [2021-12-14 17:50:51,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-14 17:50:51,307 INFO L276 IsEmpty]: Start isEmpty. Operand 93703 states and 132935 transitions. [2021-12-14 17:50:51,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-14 17:50:51,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:50:51,318 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-14 17:50:51,345 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 17:50:51,531 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 17:50:51,531 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:50:51,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:50:51,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1878663608, now seen corresponding path program 1 times [2021-12-14 17:50:51,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:50:51,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833011052] [2021-12-14 17:50:51,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:50:51,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:50:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:51,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:50:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:51,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:50:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:51,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:50:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:51,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:50:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:51,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:50:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:51,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:50:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:51,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 17:50:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:51,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:50:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:51,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:50:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:51,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:50:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:51,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:50:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:51,729 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-14 17:50:51,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:50:51,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833011052] [2021-12-14 17:50:51,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833011052] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:50:51,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668079544] [2021-12-14 17:50:51,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:50:51,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:50:51,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:50:51,731 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 17:50:51,746 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 17:50:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:50:52,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 1951 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 17:50:52,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:50:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-14 17:50:52,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:50:52,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668079544] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:50:52,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:50:52,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-12-14 17:50:52,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781159893] [2021-12-14 17:50:52,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:50:52,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:50:52,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:50:52,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:50:52,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-12-14 17:50:52,464 INFO L87 Difference]: Start difference. First operand 93703 states and 132935 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11)