./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.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 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 04:29:38,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 04:29:38,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 04:29:38,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 04:29:38,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 04:29:38,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 04:29:38,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 04:29:38,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 04:29:38,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 04:29:38,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 04:29:38,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 04:29:38,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 04:29:38,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 04:29:38,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 04:29:38,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 04:29:38,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 04:29:38,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 04:29:38,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 04:29:38,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 04:29:38,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 04:29:38,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 04:29:38,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 04:29:38,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 04:29:38,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 04:29:38,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 04:29:38,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 04:29:38,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 04:29:38,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 04:29:38,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 04:29:38,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 04:29:38,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 04:29:38,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 04:29:38,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 04:29:38,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 04:29:38,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 04:29:38,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 04:29:38,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 04:29:38,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 04:29:38,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 04:29:38,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 04:29:38,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 04:29:38,730 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 04:29:38,757 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 04:29:38,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 04:29:38,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 04:29:38,758 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 04:29:38,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 04:29:38,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 04:29:38,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 04:29:38,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 04:29:38,760 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 04:29:38,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 04:29:38,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 04:29:38,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 04:29:38,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 04:29:38,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 04:29:38,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 04:29:38,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 04:29:38,762 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 04:29:38,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 04:29:38,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 04:29:38,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 04:29:38,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 04:29:38,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:29:38,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 04:29:38,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 04:29:38,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 04:29:38,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 04:29:38,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 04:29:38,764 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 04:29:38,764 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 04:29:38,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 04:29:38,765 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce [2021-12-28 04:29:39,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 04:29:39,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 04:29:39,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 04:29:39,099 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 04:29:39,099 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 04:29:39,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-12-28 04:29:39,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f26df64e/a83b6d17ba6c460d9f9a8f9b9fa0cd97/FLAGe16c2f36b [2021-12-28 04:29:39,718 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 04:29:39,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-12-28 04:29:39,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f26df64e/a83b6d17ba6c460d9f9a8f9b9fa0cd97/FLAGe16c2f36b [2021-12-28 04:29:39,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f26df64e/a83b6d17ba6c460d9f9a8f9b9fa0cd97 [2021-12-28 04:29:39,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 04:29:39,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 04:29:39,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 04:29:39,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 04:29:39,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 04:29:39,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:29:39" (1/1) ... [2021-12-28 04:29:39,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16b329df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:29:39, skipping insertion in model container [2021-12-28 04:29:39,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:29:39" (1/1) ... [2021-12-28 04:29:39,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 04:29:40,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 04:29:41,232 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2021-12-28 04:29:41,286 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:29:41,316 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 04:29:41,651 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2021-12-28 04:29:41,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:29:41,784 INFO L208 MainTranslator]: Completed translation [2021-12-28 04:29:41,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:29:41 WrapperNode [2021-12-28 04:29:41,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 04:29:41,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 04:29:41,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 04:29:41,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 04:29:41,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:29:41" (1/1) ... [2021-12-28 04:29:41,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:29:41" (1/1) ... [2021-12-28 04:29:41,990 INFO L137 Inliner]: procedures = 262, calls = 1347, calls flagged for inlining = 121, calls inlined = 116, statements flattened = 3303 [2021-12-28 04:29:41,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 04:29:41,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 04:29:41,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 04:29:41,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 04:29:41,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:29:41" (1/1) ... [2021-12-28 04:29:41,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:29:41" (1/1) ... [2021-12-28 04:29:42,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:29:41" (1/1) ... [2021-12-28 04:29:42,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:29:41" (1/1) ... [2021-12-28 04:29:42,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:29:41" (1/1) ... [2021-12-28 04:29:42,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:29:41" (1/1) ... [2021-12-28 04:29:42,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:29:41" (1/1) ... [2021-12-28 04:29:42,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 04:29:42,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 04:29:42,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 04:29:42,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 04:29:42,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:29:41" (1/1) ... [2021-12-28 04:29:42,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:29:42,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:29:42,234 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) [2021-12-28 04:29:42,251 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 [2021-12-28 04:29:42,264 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_txfree [2021-12-28 04:29:42,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_txfree [2021-12-28 04:29:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-12-28 04:29:42,265 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-12-28 04:29:42,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 04:29:42,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 04:29:42,266 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-28 04:29:42,266 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-28 04:29:42,266 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_timeout [2021-12-28 04:29:42,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_timeout [2021-12-28 04:29:42,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 04:29:42,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 04:29:42,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-28 04:29:42,267 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-28 04:29:42,267 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset_after_host_error [2021-12-28 04:29:42,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset_after_host_error [2021-12-28 04:29:42,267 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-12-28 04:29:42,267 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-12-28 04:29:42,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-28 04:29:42,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-28 04:29:42,267 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 04:29:42,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 04:29:42,268 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-28 04:29:42,268 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-28 04:29:42,268 INFO L130 BoogieDeclarations]: Found specification of procedure init_tfdlist [2021-12-28 04:29:42,268 INFO L138 BoogieDeclarations]: Found implementation of procedure init_tfdlist [2021-12-28 04:29:42,268 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 04:29:42,268 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 04:29:42,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 04:29:42,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 04:29:42,269 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-12-28 04:29:42,269 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-12-28 04:29:42,269 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-12-28 04:29:42,269 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-12-28 04:29:42,269 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2021-12-28 04:29:42,269 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2021-12-28 04:29:42,269 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-28 04:29:42,270 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-28 04:29:42,270 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-12-28 04:29:42,270 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-12-28 04:29:42,270 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_set_multicast_list [2021-12-28 04:29:42,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_set_multicast_list [2021-12-28 04:29:42,271 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-12-28 04:29:42,271 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-12-28 04:29:42,271 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 04:29:42,271 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 04:29:42,271 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-12-28 04:29:42,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-12-28 04:29:42,271 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-28 04:29:42,272 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-28 04:29:42,272 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-12-28 04:29:42,272 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-12-28 04:29:42,272 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_clear [2021-12-28 04:29:42,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_clear [2021-12-28 04:29:42,272 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_rx_clear [2021-12-28 04:29:42,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_rx_clear [2021-12-28 04:29:42,273 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2021-12-28 04:29:42,273 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2021-12-28 04:29:42,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 04:29:42,274 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-28 04:29:42,274 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-28 04:29:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-28 04:29:42,275 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-28 04:29:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2021-12-28 04:29:42,275 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2021-12-28 04:29:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 04:29:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-12-28 04:29:42,275 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-12-28 04:29:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-28 04:29:42,276 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-28 04:29:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-12-28 04:29:42,276 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-12-28 04:29:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-28 04:29:42,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-28 04:29:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_free_skb [2021-12-28 04:29:42,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_free_skb [2021-12-28 04:29:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-12-28 04:29:42,277 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-12-28 04:29:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure send_three_state [2021-12-28 04:29:42,277 INFO L138 BoogieDeclarations]: Found implementation of procedure send_three_state [2021-12-28 04:29:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 04:29:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 04:29:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure read_phy_bit [2021-12-28 04:29:42,278 INFO L138 BoogieDeclarations]: Found implementation of procedure read_phy_bit [2021-12-28 04:29:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-28 04:29:42,278 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-28 04:29:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-28 04:29:42,278 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-28 04:29:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-28 04:29:42,278 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-28 04:29:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 04:29:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-12-28 04:29:42,279 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-12-28 04:29:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-28 04:29:42,280 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-28 04:29:42,280 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_io_config [2021-12-28 04:29:42,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_io_config [2021-12-28 04:29:42,280 INFO L130 BoogieDeclarations]: Found specification of procedure init_rfdlist [2021-12-28 04:29:42,280 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rfdlist [2021-12-28 04:29:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_open [2021-12-28 04:29:42,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_open [2021-12-28 04:29:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 04:29:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioctl [2021-12-28 04:29:42,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioctl [2021-12-28 04:29:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-28 04:29:42,282 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-28 04:29:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 04:29:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-28 04:29:42,282 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-28 04:29:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-28 04:29:42,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-28 04:29:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 04:29:42,283 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 04:29:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-28 04:29:42,283 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-28 04:29:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-28 04:29:42,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-28 04:29:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-12-28 04:29:42,284 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-12-28 04:29:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-12-28 04:29:42,286 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-12-28 04:29:42,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 04:29:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-28 04:29:42,287 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-28 04:29:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-28 04:29:42,288 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-28 04:29:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-12-28 04:29:42,289 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-12-28 04:29:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 04:29:42,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 04:29:42,293 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_get_stats [2021-12-28 04:29:42,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_get_stats [2021-12-28 04:29:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-28 04:29:42,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-28 04:29:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rxrestore [2021-12-28 04:29:42,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rxrestore [2021-12-28 04:29:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 04:29:42,294 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_stop [2021-12-28 04:29:42,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_stop [2021-12-28 04:29:42,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-28 04:29:42,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-28 04:29:42,295 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_config_autoneg [2021-12-28 04:29:42,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_config_autoneg [2021-12-28 04:29:42,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 04:29:42,295 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-28 04:29:42,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-28 04:29:42,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 04:29:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-28 04:29:42,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-28 04:29:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-12-28 04:29:42,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-12-28 04:29:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioaddr [2021-12-28 04:29:42,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioaddr [2021-12-28 04:29:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-12-28 04:29:42,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-12-28 04:29:42,296 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset [2021-12-28 04:29:42,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset [2021-12-28 04:29:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-28 04:29:42,297 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-28 04:29:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-28 04:29:42,297 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-28 04:29:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_get_rxbuff [2021-12-28 04:29:42,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_get_rxbuff [2021-12-28 04:29:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-12-28 04:29:42,297 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-12-28 04:29:42,297 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_write_phy_ctl [2021-12-28 04:29:42,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_write_phy_ctl [2021-12-28 04:29:42,298 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-12-28 04:29:42,298 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-12-28 04:29:42,298 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_change_mtu [2021-12-28 04:29:42,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_change_mtu [2021-12-28 04:29:42,298 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-28 04:29:42,298 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-28 04:29:42,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 04:29:42,299 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_check_error [2021-12-28 04:29:42,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_check_error [2021-12-28 04:29:42,299 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_drive_phy_ctl_low_high [2021-12-28 04:29:42,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_drive_phy_ctl_low_high [2021-12-28 04:29:42,299 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-12-28 04:29:42,299 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-12-28 04:29:42,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 04:29:42,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 04:29:42,900 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 04:29:42,913 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 04:29:43,666 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 04:29:45,866 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 04:29:45,877 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 04:29:45,877 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 04:29:45,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:29:45 BoogieIcfgContainer [2021-12-28 04:29:45,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 04:29:45,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 04:29:45,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 04:29:45,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 04:29:45,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 04:29:39" (1/3) ... [2021-12-28 04:29:45,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d076da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:29:45, skipping insertion in model container [2021-12-28 04:29:45,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:29:41" (2/3) ... [2021-12-28 04:29:45,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d076da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:29:45, skipping insertion in model container [2021-12-28 04:29:45,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:29:45" (3/3) ... [2021-12-28 04:29:45,886 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-12-28 04:29:45,889 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 04:29:45,889 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 04:29:45,921 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 04:29:45,934 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 [2021-12-28 04:29:45,934 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 04:29:45,968 INFO L276 IsEmpty]: Start isEmpty. Operand has 1386 states, 940 states have (on average 1.2957446808510638) internal successors, (1218), 973 states have internal predecessors, (1218), 364 states have call successors, (364), 83 states have call predecessors, (364), 82 states have return successors, (356), 356 states have call predecessors, (356), 356 states have call successors, (356) [2021-12-28 04:29:45,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-28 04:29:45,980 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:29:45,981 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-12-28 04:29:45,981 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:29:45,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:29:45,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1357410998, now seen corresponding path program 1 times [2021-12-28 04:29:45,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:29:45,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811650402] [2021-12-28 04:29:45,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:29:45,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:29:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:46,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:29:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:46,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:29:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:46,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:29:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:46,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:29:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:46,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:29:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:46,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:29:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:46,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:29:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:46,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:29:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:46,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:29:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:46,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:29:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:46,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:29:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:46,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:29:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:46,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:29:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:46,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 04:29:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:46,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 04:29:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:46,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 04:29:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:46,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 04:29:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-28 04:29:46,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:29:46,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811650402] [2021-12-28 04:29:46,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811650402] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:29:46,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:29:46,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 04:29:46,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893269470] [2021-12-28 04:29:46,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:29:46,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:29:46,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:29:46,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:29:46,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:29:46,580 INFO L87 Difference]: Start difference. First operand has 1386 states, 940 states have (on average 1.2957446808510638) internal successors, (1218), 973 states have internal predecessors, (1218), 364 states have call successors, (364), 83 states have call predecessors, (364), 82 states have return successors, (356), 356 states have call predecessors, (356), 356 states have call successors, (356) Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-28 04:29:51,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:29:51,613 INFO L93 Difference]: Finished difference Result 2992 states and 4288 transitions. [2021-12-28 04:29:51,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 04:29:51,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 121 [2021-12-28 04:29:51,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:29:51,638 INFO L225 Difference]: With dead ends: 2992 [2021-12-28 04:29:51,638 INFO L226 Difference]: Without dead ends: 1590 [2021-12-28 04:29:51,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:29:51,653 INFO L933 BasicCegarLoop]: 1731 mSDtfsCounter, 1036 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 1084 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1084 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-28 04:29:51,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 3224 Invalid, 2217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1084 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-28 04:29:51,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-12-28 04:29:51,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1359. [2021-12-28 04:29:51,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 923 states have (on average 1.2838569880823403) internal successors, (1185), 945 states have internal predecessors, (1185), 354 states have call successors, (354), 82 states have call predecessors, (354), 81 states have return successors, (353), 353 states have call predecessors, (353), 353 states have call successors, (353) [2021-12-28 04:29:51,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1892 transitions. [2021-12-28 04:29:51,752 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1892 transitions. Word has length 121 [2021-12-28 04:29:51,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:29:51,753 INFO L470 AbstractCegarLoop]: Abstraction has 1359 states and 1892 transitions. [2021-12-28 04:29:51,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-28 04:29:51,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1892 transitions. [2021-12-28 04:29:51,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-28 04:29:51,757 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:29:51,757 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-12-28 04:29:51,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 04:29:51,758 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:29:51,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:29:51,758 INFO L85 PathProgramCache]: Analyzing trace with hash -874608722, now seen corresponding path program 1 times [2021-12-28 04:29:51,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:29:51,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850034354] [2021-12-28 04:29:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:29:51,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:29:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:51,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:29:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:51,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:29:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:51,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:29:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:51,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:29:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:52,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:29:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:52,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:29:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:52,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:29:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:52,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:29:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:52,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:29:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:52,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:29:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:52,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:29:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:52,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:29:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:52,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:29:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:52,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 04:29:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:52,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 04:29:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:52,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 04:29:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:52,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 04:29:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:29:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-28 04:29:52,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:29:52,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850034354] [2021-12-28 04:29:52,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850034354] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:29:52,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:29:52,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 04:29:52,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778009412] [2021-12-28 04:29:52,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:29:52,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 04:29:52,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:29:52,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 04:29:52,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:29:52,154 INFO L87 Difference]: Start difference. First operand 1359 states and 1892 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-28 04:29:58,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:30:00,149 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:30:03,248 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:30:03,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:30:03,958 INFO L93 Difference]: Finished difference Result 4502 states and 6412 transitions. [2021-12-28 04:30:03,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 04:30:03,958 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 121 [2021-12-28 04:30:03,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:30:03,973 INFO L225 Difference]: With dead ends: 4502 [2021-12-28 04:30:03,973 INFO L226 Difference]: Without dead ends: 3164 [2021-12-28 04:30:03,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-12-28 04:30:03,979 INFO L933 BasicCegarLoop]: 2042 mSDtfsCounter, 3668 mSDsluCounter, 5218 mSDsCounter, 0 mSdLazyCounter, 5079 mSolverCounterSat, 2424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3884 SdHoareTripleChecker+Valid, 7260 SdHoareTripleChecker+Invalid, 7503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2424 IncrementalHoareTripleChecker+Valid, 5079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-12-28 04:30:03,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3884 Valid, 7260 Invalid, 7503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2424 Valid, 5079 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2021-12-28 04:30:03,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2021-12-28 04:30:04,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 2724. [2021-12-28 04:30:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2724 states, 1851 states have (on average 1.283090221501891) internal successors, (2375), 1897 states have internal predecessors, (2375), 706 states have call successors, (706), 163 states have call predecessors, (706), 166 states have return successors, (727), 707 states have call predecessors, (727), 705 states have call successors, (727) [2021-12-28 04:30:04,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3808 transitions. [2021-12-28 04:30:04,104 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3808 transitions. Word has length 121 [2021-12-28 04:30:04,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:30:04,106 INFO L470 AbstractCegarLoop]: Abstraction has 2724 states and 3808 transitions. [2021-12-28 04:30:04,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-28 04:30:04,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3808 transitions. [2021-12-28 04:30:04,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-28 04:30:04,112 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:30:04,112 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-12-28 04:30:04,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 04:30:04,113 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:30:04,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:30:04,113 INFO L85 PathProgramCache]: Analyzing trace with hash -967648419, now seen corresponding path program 1 times [2021-12-28 04:30:04,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:30:04,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877122876] [2021-12-28 04:30:04,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:30:04,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:30:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:04,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:30:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:04,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:30:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:04,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:30:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:04,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:30:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:04,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:30:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:04,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:30:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:04,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:30:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:04,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:30:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:04,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:30:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:04,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:30:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:04,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:30:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:04,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:30:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:04,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:30:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:04,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 04:30:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:04,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 04:30:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:04,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 04:30:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:04,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 04:30:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:04,346 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-28 04:30:04,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:30:04,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877122876] [2021-12-28 04:30:04,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877122876] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:30:04,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:30:04,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 04:30:04,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003044903] [2021-12-28 04:30:04,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:30:04,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 04:30:04,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:30:04,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 04:30:04,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:30:04,348 INFO L87 Difference]: Start difference. First operand 2724 states and 3808 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-28 04:30:14,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:30:14,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:30:14,927 INFO L93 Difference]: Finished difference Result 9009 states and 12892 transitions. [2021-12-28 04:30:14,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 04:30:14,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 122 [2021-12-28 04:30:14,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:30:14,964 INFO L225 Difference]: With dead ends: 9009 [2021-12-28 04:30:14,964 INFO L226 Difference]: Without dead ends: 6306 [2021-12-28 04:30:14,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-12-28 04:30:14,985 INFO L933 BasicCegarLoop]: 1970 mSDtfsCounter, 4797 mSDsluCounter, 4356 mSDsCounter, 0 mSdLazyCounter, 4253 mSolverCounterSat, 3532 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5014 SdHoareTripleChecker+Valid, 6326 SdHoareTripleChecker+Invalid, 7786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3532 IncrementalHoareTripleChecker+Valid, 4253 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-12-28 04:30:14,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5014 Valid, 6326 Invalid, 7786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3532 Valid, 4253 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2021-12-28 04:30:14,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6306 states. [2021-12-28 04:30:15,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6306 to 5487. [2021-12-28 04:30:15,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5487 states, 3730 states have (on average 1.2823056300268096) internal successors, (4783), 3826 states have internal predecessors, (4783), 1415 states have call successors, (1415), 326 states have call predecessors, (1415), 341 states have return successors, (1524), 1422 states have call predecessors, (1524), 1414 states have call successors, (1524) [2021-12-28 04:30:15,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5487 states to 5487 states and 7722 transitions. [2021-12-28 04:30:15,311 INFO L78 Accepts]: Start accepts. Automaton has 5487 states and 7722 transitions. Word has length 122 [2021-12-28 04:30:15,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:30:15,313 INFO L470 AbstractCegarLoop]: Abstraction has 5487 states and 7722 transitions. [2021-12-28 04:30:15,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-28 04:30:15,314 INFO L276 IsEmpty]: Start isEmpty. Operand 5487 states and 7722 transitions. [2021-12-28 04:30:15,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 04:30:15,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:30:15,324 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-12-28 04:30:15,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 04:30:15,325 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:30:15,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:30:15,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1203194411, now seen corresponding path program 1 times [2021-12-28 04:30:15,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:30:15,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969967463] [2021-12-28 04:30:15,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:30:15,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:30:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:15,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:30:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:15,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:30:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:15,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:30:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:15,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:30:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:15,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:30:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:15,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:30:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:15,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:30:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:15,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:30:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:15,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:30:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:15,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:30:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:15,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:30:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:15,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:30:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:15,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:30:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:15,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 04:30:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:15,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 04:30:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:15,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 04:30:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:15,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 04:30:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:15,696 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-28 04:30:15,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:30:15,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969967463] [2021-12-28 04:30:15,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969967463] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:30:15,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:30:15,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 04:30:15,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568180963] [2021-12-28 04:30:15,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:30:15,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 04:30:15,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:30:15,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 04:30:15,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:30:15,699 INFO L87 Difference]: Start difference. First operand 5487 states and 7722 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-28 04:30:26,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:30:28,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:30:30,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:30:30,604 INFO L93 Difference]: Finished difference Result 18067 states and 25992 transitions. [2021-12-28 04:30:30,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 04:30:30,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 123 [2021-12-28 04:30:30,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:30:30,667 INFO L225 Difference]: With dead ends: 18067 [2021-12-28 04:30:30,668 INFO L226 Difference]: Without dead ends: 12601 [2021-12-28 04:30:30,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-12-28 04:30:30,694 INFO L933 BasicCegarLoop]: 1965 mSDtfsCounter, 3794 mSDsluCounter, 5031 mSDsCounter, 0 mSdLazyCounter, 4995 mSolverCounterSat, 2483 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4010 SdHoareTripleChecker+Valid, 6996 SdHoareTripleChecker+Invalid, 7479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2483 IncrementalHoareTripleChecker+Valid, 4995 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2021-12-28 04:30:30,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4010 Valid, 6996 Invalid, 7479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2483 Valid, 4995 Invalid, 1 Unknown, 0 Unchecked, 14.3s Time] [2021-12-28 04:30:30,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12601 states. [2021-12-28 04:30:31,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12601 to 10970. [2021-12-28 04:30:31,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10970 states, 7461 states have (on average 1.2814636107760353) internal successors, (9561), 7653 states have internal predecessors, (9561), 2823 states have call successors, (2823), 654 states have call predecessors, (2823), 685 states have return successors, (3130), 2838 states have call predecessors, (3130), 2822 states have call successors, (3130) [2021-12-28 04:30:31,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10970 states to 10970 states and 15514 transitions. [2021-12-28 04:30:31,109 INFO L78 Accepts]: Start accepts. Automaton has 10970 states and 15514 transitions. Word has length 123 [2021-12-28 04:30:31,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:30:31,110 INFO L470 AbstractCegarLoop]: Abstraction has 10970 states and 15514 transitions. [2021-12-28 04:30:31,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-28 04:30:31,110 INFO L276 IsEmpty]: Start isEmpty. Operand 10970 states and 15514 transitions. [2021-12-28 04:30:31,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-28 04:30:31,112 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:30:31,112 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-12-28 04:30:31,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 04:30:31,113 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:30:31,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:30:31,113 INFO L85 PathProgramCache]: Analyzing trace with hash -292898560, now seen corresponding path program 1 times [2021-12-28 04:30:31,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:30:31,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779285837] [2021-12-28 04:30:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:30:31,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:30:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:31,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:30:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:31,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:30:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:31,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:30:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:31,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:30:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:31,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:30:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:31,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:30:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:31,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:30:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:31,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:30:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:31,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:30:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:31,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:30:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:31,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:30:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:31,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:30:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:31,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:30:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:31,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 04:30:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:31,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 04:30:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:31,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 04:30:31,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:31,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 04:30:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:30:31,421 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-28 04:30:31,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:30:31,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779285837] [2021-12-28 04:30:31,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779285837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:30:31,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:30:31,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 04:30:31,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524837760] [2021-12-28 04:30:31,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:30:31,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 04:30:31,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:30:31,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 04:30:31,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:30:31,423 INFO L87 Difference]: Start difference. First operand 10970 states and 15514 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 4 states have internal predecessors, (46), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-28 04:30:40,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:30:46,306 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:30:49,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []