./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-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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-08_1a-drivers--net--xen-netback--xen-netback.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 f816b5cf025191130f4fa3c768ff88e2f73399115a7a3b9220171373d5eeca46 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 16:28:45,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:28:45,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:28:45,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:28:45,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:28:45,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:28:45,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:28:45,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:28:45,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:28:45,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:28:45,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:28:45,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:28:45,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:28:45,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:28:45,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:28:45,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:28:45,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:28:45,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:28:45,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:28:45,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:28:45,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:28:45,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:28:45,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:28:45,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:28:45,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:28:45,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:28:45,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:28:45,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:28:45,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:28:45,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:28:45,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:28:45,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:28:45,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:28:45,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:28:45,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:28:45,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:28:45,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:28:45,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:28:45,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:28:45,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:28:45,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:28:45,748 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:28:45,774 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:28:45,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:28:45,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:28:45,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:28:45,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:28:45,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:28:45,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:28:45,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:28:45,777 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:28:45,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:28:45,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:28:45,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:28:45,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:28:45,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:28:45,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:28:45,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:28:45,779 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:28:45,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:28:45,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:28:45,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:28:45,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:28:45,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:28:45,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:28:45,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:28:45,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:28:45,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:28:45,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:28:45,781 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:28:45,782 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:28:45,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:28:45,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:28:45,782 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f816b5cf025191130f4fa3c768ff88e2f73399115a7a3b9220171373d5eeca46 [2021-12-21 16:28:46,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:28:46,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:28:46,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:28:46,034 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:28:46,034 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:28:46,036 INFO L432 ainManager$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-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2021-12-21 16:28:46,098 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b97ca55fc/4388bd57f30441598f002e25975af293/FLAG0609a365c [2021-12-21 16:28:46,825 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:28:46,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2021-12-21 16:28:46,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b97ca55fc/4388bd57f30441598f002e25975af293/FLAG0609a365c [2021-12-21 16:28:47,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b97ca55fc/4388bd57f30441598f002e25975af293 [2021-12-21 16:28:47,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:28:47,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:28:47,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:28:47,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:28:47,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:28:47,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:28:47" (1/1) ... [2021-12-21 16:28:47,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@753663d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:28:47, skipping insertion in model container [2021-12-21 16:28:47,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:28:47" (1/1) ... [2021-12-21 16:28:47,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:28:47,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:28:49,742 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-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i[397231,397244] [2021-12-21 16:28:49,816 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:28:49,886 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:28:50,464 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-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i[397231,397244] [2021-12-21 16:28:50,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:28:50,622 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:28:50,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:28:50 WrapperNode [2021-12-21 16:28:50,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:28:50,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:28:50,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:28:50,626 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:28:50,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:28:50" (1/1) ... [2021-12-21 16:28:50,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:28:50" (1/1) ... [2021-12-21 16:28:50,921 INFO L137 Inliner]: procedures = 426, calls = 3455, calls flagged for inlining = 207, calls inlined = 116, statements flattened = 4483 [2021-12-21 16:28:50,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:28:50,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:28:50,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:28:50,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:28:50,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:28:50" (1/1) ... [2021-12-21 16:28:50,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:28:50" (1/1) ... [2021-12-21 16:28:50,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:28:50" (1/1) ... [2021-12-21 16:28:50,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:28:50" (1/1) ... [2021-12-21 16:28:51,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:28:50" (1/1) ... [2021-12-21 16:28:51,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:28:50" (1/1) ... [2021-12-21 16:28:51,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:28:50" (1/1) ... [2021-12-21 16:28:51,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:28:51,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:28:51,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:28:51,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:28:51,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:28:50" (1/1) ... [2021-12-21 16:28:51,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:28:51,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:28:51,184 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) [2021-12-21 16:28:51,202 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 [2021-12-21 16:28:51,223 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-12-21 16:28:51,223 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2021-12-21 16:28:51,223 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2021-12-21 16:28:51,223 INFO L130 BoogieDeclarations]: Found specification of procedure backend_switch_state [2021-12-21 16:28:51,224 INFO L138 BoogieDeclarations]: Found implementation of procedure backend_switch_state [2021-12-21 16:28:51,224 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-12-21 16:28:51,224 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-12-21 16:28:51,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-21 16:28:51,224 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-21 16:28:51,224 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hotplug_status_watch [2021-12-21 16:28:51,224 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hotplug_status_watch [2021-12-21 16:28:51,225 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-12-21 16:28:51,225 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-12-21 16:28:51,225 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_unmap_frontend_rings [2021-12-21 16:28:51,225 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_unmap_frontend_rings [2021-12-21 16:28:51,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:28:51,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:28:51,225 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_xenbus_watch [2021-12-21 16:28:51,226 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_xenbus_watch [2021-12-21 16:28:51,226 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_kick_thread [2021-12-21 16:28:51,226 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_kick_thread [2021-12-21 16:28:51,226 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-21 16:28:51,226 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-21 16:28:51,226 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_map_ring_valloc [2021-12-21 16:28:51,226 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_map_ring_valloc [2021-12-21 16:28:51,227 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-21 16:28:51,227 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-21 16:28:51,227 INFO L130 BoogieDeclarations]: Found specification of procedure xen_net_read_rate [2021-12-21 16:28:51,227 INFO L138 BoogieDeclarations]: Found implementation of procedure xen_net_read_rate [2021-12-21 16:28:51,227 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-21 16:28:51,227 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-21 16:28:51,227 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-21 16:28:51,228 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-21 16:28:51,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-21 16:28:51,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-21 16:28:51,228 INFO L130 BoogieDeclarations]: Found specification of procedure netback_uevent [2021-12-21 16:28:51,228 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_uevent [2021-12-21 16:28:51,229 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-21 16:28:51,229 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-21 16:28:51,229 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_carrier_off [2021-12-21 16:28:51,229 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_carrier_off [2021-12-21 16:28:51,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:28:51,229 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2021-12-21 16:28:51,229 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2021-12-21 16:28:51,230 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-21 16:28:51,230 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-21 16:28:51,230 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-21 16:28:51,230 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-21 16:28:51,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 16:28:51,230 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2021-12-21 16:28:51,230 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2021-12-21 16:28:51,231 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-21 16:28:51,231 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-21 16:28:51,231 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-21 16:28:51,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-21 16:28:51,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 16:28:51,232 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_switch_state [2021-12-21 16:28:51,232 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_switch_state [2021-12-21 16:28:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:28:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-21 16:28:51,233 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-21 16:28:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_deinit_queue [2021-12-21 16:28:51,234 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_deinit_queue [2021-12-21 16:28:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2021-12-21 16:28:51,234 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2021-12-21 16:28:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_to_xenbus_device [2021-12-21 16:28:51,234 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_to_xenbus_device [2021-12-21 16:28:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure xen_unregister_watchers [2021-12-21 16:28:51,234 INFO L138 BoogieDeclarations]: Found implementation of procedure xen_unregister_watchers [2021-12-21 16:28:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-12-21 16:28:51,235 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-12-21 16:28:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-21 16:28:51,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-21 16:28:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure frontend_changed [2021-12-21 16:28:51,235 INFO L138 BoogieDeclarations]: Found implementation of procedure frontend_changed [2021-12-21 16:28:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:28:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure set_backend_state [2021-12-21 16:28:51,236 INFO L138 BoogieDeclarations]: Found implementation of procedure set_backend_state [2021-12-21 16:28:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:28:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:28:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_write_io_ring [2021-12-21 16:28:51,237 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_write_io_ring [2021-12-21 16:28:51,237 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-21 16:28:51,237 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-21 16:28:51,237 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2021-12-21 16:28:51,237 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2021-12-21 16:28:51,237 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_strstate [2021-12-21 16:28:51,237 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_strstate [2021-12-21 16:28:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-21 16:28:51,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-21 16:28:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-21 16:28:51,238 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-21 16:28:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:28:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:28:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-21 16:28:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-21 16:28:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 16:28:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 16:28:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_disconnect [2021-12-21 16:28:51,240 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_disconnect [2021-12-21 16:28:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 16:28:51,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 16:28:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-12-21 16:28:51,241 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-12-21 16:28:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_down [2021-12-21 16:28:51,241 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_down [2021-12-21 16:28:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-12-21 16:28:51,242 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-12-21 16:28:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure bind_interdomain_evtchn_to_irqhandler [2021-12-21 16:28:51,242 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_interdomain_evtchn_to_irqhandler [2021-12-21 16:28:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_uevent [2021-12-21 16:28:51,242 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_uevent [2021-12-21 16:28:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-12-21 16:28:51,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-12-21 16:28:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2021-12-21 16:28:51,243 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2021-12-21 16:28:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-12-21 16:28:51,244 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-12-21 16:28:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_fix_features [2021-12-21 16:28:51,246 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_fix_features [2021-12-21 16:28:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2021-12-21 16:28:51,246 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2021-12-21 16:28:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:28:51,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:28:51,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-21 16:28:51,248 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-21 16:28:51,248 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 16:28:51,249 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 16:28:51,254 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2021-12-21 16:28:51,254 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2021-12-21 16:28:51,254 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-21 16:28:51,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-21 16:28:51,254 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_up [2021-12-21 16:28:51,254 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_up [2021-12-21 16:28:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure get_jiffies_64 [2021-12-21 16:28:51,255 INFO L138 BoogieDeclarations]: Found implementation of procedure get_jiffies_64 [2021-12-21 16:28:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-21 16:28:51,255 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-21 16:28:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:28:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-12-21 16:28:51,255 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-12-21 16:28:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_unmap_ring_vfree [2021-12-21 16:28:51,256 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_unmap_ring_vfree [2021-12-21 16:28:51,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:28:51,256 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_change_mtu [2021-12-21 16:28:51,256 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_change_mtu [2021-12-21 16:28:51,256 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2021-12-21 16:28:51,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2021-12-21 16:28:51,256 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_read [2021-12-21 16:28:51,256 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_read [2021-12-21 16:28:51,257 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2021-12-21 16:28:51,257 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2021-12-21 16:28:51,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:28:51,257 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-21 16:28:51,257 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-21 16:28:51,257 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-21 16:28:51,257 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-21 16:28:51,257 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-21 16:28:51,257 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-21 16:28:51,258 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2021-12-21 16:28:51,258 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2021-12-21 16:28:51,258 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-21 16:28:51,258 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-21 16:28:51,258 INFO L130 BoogieDeclarations]: Found specification of procedure netback_remove [2021-12-21 16:28:51,258 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_remove [2021-12-21 16:28:51,258 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-21 16:28:51,258 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-21 16:28:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 16:28:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 16:28:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:28:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 16:28:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 16:28:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2021-12-21 16:28:51,259 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2021-12-21 16:28:51,259 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_napi_schedule_or_enable_events [2021-12-21 16:28:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_napi_schedule_or_enable_events [2021-12-21 16:28:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-21 16:28:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-21 16:28:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-12-21 16:28:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-12-21 16:28:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-12-21 16:28:51,260 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-12-21 16:28:51,260 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-21 16:28:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-21 16:28:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-21 16:28:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-21 16:28:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-21 16:28:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-21 16:28:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:28:51,261 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_get_stats [2021-12-21 16:28:51,261 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_get_stats [2021-12-21 16:28:51,861 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:28:51,864 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:28:52,095 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 16:28:57,186 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:28:57,205 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:28:57,206 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 16:28:57,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:28:57 BoogieIcfgContainer [2021-12-21 16:28:57,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:28:57,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:28:57,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:28:57,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:28:57,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:28:47" (1/3) ... [2021-12-21 16:28:57,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698c5906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:28:57, skipping insertion in model container [2021-12-21 16:28:57,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:28:50" (2/3) ... [2021-12-21 16:28:57,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698c5906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:28:57, skipping insertion in model container [2021-12-21 16:28:57,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:28:57" (3/3) ... [2021-12-21 16:28:57,226 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2021-12-21 16:28:57,229 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:28:57,230 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:28:57,290 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:28:57,295 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 [2021-12-21 16:28:57,295 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:28:57,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 1307 states, 948 states have (on average 1.3206751054852321) internal successors, (1252), 974 states have internal predecessors, (1252), 271 states have call successors, (271), 87 states have call predecessors, (271), 86 states have return successors, (265), 258 states have call predecessors, (265), 265 states have call successors, (265) [2021-12-21 16:28:57,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-21 16:28:57,344 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:28:57,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:28:57,345 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:28:57,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:28:57,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1510187125, now seen corresponding path program 1 times [2021-12-21 16:28:57,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:28:57,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823348356] [2021-12-21 16:28:57,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:28:57,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:28:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:28:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:28:57,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:28:57,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823348356] [2021-12-21 16:28:57,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823348356] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:28:57,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:28:57,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 16:28:57,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844881000] [2021-12-21 16:28:57,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:28:57,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 16:28:57,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:28:57,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 16:28:57,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 16:28:57,920 INFO L87 Difference]: Start difference. First operand has 1307 states, 948 states have (on average 1.3206751054852321) internal successors, (1252), 974 states have internal predecessors, (1252), 271 states have call successors, (271), 87 states have call predecessors, (271), 86 states have return successors, (265), 258 states have call predecessors, (265), 265 states have call successors, (265) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 16:28:58,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:28:58,177 INFO L93 Difference]: Finished difference Result 3905 states and 5464 transitions. [2021-12-21 16:28:58,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 16:28:58,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-21 16:28:58,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:28:58,214 INFO L225 Difference]: With dead ends: 3905 [2021-12-21 16:28:58,214 INFO L226 Difference]: Without dead ends: 2553 [2021-12-21 16:28:58,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 16:28:58,245 INFO L933 BasicCegarLoop]: 2044 mSDtfsCounter, 1761 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 3814 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:28:58,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1761 Valid, 3814 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 16:28:58,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2021-12-21 16:28:58,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2550. [2021-12-21 16:28:58,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2550 states, 1853 states have (on average 1.3038316243928765) internal successors, (2416), 1887 states have internal predecessors, (2416), 526 states have call successors, (526), 171 states have call predecessors, (526), 170 states have return successors, (524), 510 states have call predecessors, (524), 524 states have call successors, (524) [2021-12-21 16:28:58,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3466 transitions. [2021-12-21 16:28:58,443 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3466 transitions. Word has length 19 [2021-12-21 16:28:58,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:28:58,443 INFO L470 AbstractCegarLoop]: Abstraction has 2550 states and 3466 transitions. [2021-12-21 16:28:58,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 16:28:58,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3466 transitions. [2021-12-21 16:28:58,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-21 16:28:58,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:28:58,461 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:28:58,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:28:58,462 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:28:58,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:28:58,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1054431279, now seen corresponding path program 1 times [2021-12-21 16:28:58,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:28:58,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822752649] [2021-12-21 16:28:58,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:28:58,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:28:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:28:58,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:28:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:28:58,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:28:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:28:58,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:28:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:28:58,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-21 16:28:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:28:58,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:28:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:28:58,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:28:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:28:58,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 16:28:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:28:58,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:28:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:28:58,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 16:28:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:28:58,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 16:28:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:28:58,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:28:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:28:58,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 16:28:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:28:58,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 16:28:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:28:58,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 16:28:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:28:58,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 16:28:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:28:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-21 16:28:58,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:28:58,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822752649] [2021-12-21 16:28:58,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822752649] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:28:58,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:28:58,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 16:28:58,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802844725] [2021-12-21 16:28:58,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:28:58,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 16:28:58,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:28:58,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 16:28:58,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:28:58,961 INFO L87 Difference]: Start difference. First operand 2550 states and 3466 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 7 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 16:29:04,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:29:04,863 INFO L93 Difference]: Finished difference Result 6629 states and 9102 transitions. [2021-12-21 16:29:04,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 16:29:04,864 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 7 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 106 [2021-12-21 16:29:04,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:29:04,885 INFO L225 Difference]: With dead ends: 6629 [2021-12-21 16:29:04,886 INFO L226 Difference]: Without dead ends: 4082 [2021-12-21 16:29:04,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-12-21 16:29:04,898 INFO L933 BasicCegarLoop]: 1728 mSDtfsCounter, 1492 mSDsluCounter, 2880 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 2456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 603 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-21 16:29:04,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1592 Valid, 4608 Invalid, 2456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [603 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-12-21 16:29:04,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2021-12-21 16:29:05,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 3560. [2021-12-21 16:29:05,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3560 states, 2610 states have (on average 1.3114942528735631) internal successors, (3423), 2655 states have internal predecessors, (3423), 702 states have call successors, (702), 248 states have call predecessors, (702), 247 states have return successors, (700), 683 states have call predecessors, (700), 700 states have call successors, (700) [2021-12-21 16:29:05,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3560 states to 3560 states and 4825 transitions. [2021-12-21 16:29:05,041 INFO L78 Accepts]: Start accepts. Automaton has 3560 states and 4825 transitions. Word has length 106 [2021-12-21 16:29:05,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:29:05,041 INFO L470 AbstractCegarLoop]: Abstraction has 3560 states and 4825 transitions. [2021-12-21 16:29:05,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 7 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-21 16:29:05,042 INFO L276 IsEmpty]: Start isEmpty. Operand 3560 states and 4825 transitions. [2021-12-21 16:29:05,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-21 16:29:05,053 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:29:05,053 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:29:05,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:29:05,054 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:29:05,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:29:05,054 INFO L85 PathProgramCache]: Analyzing trace with hash 772852535, now seen corresponding path program 1 times [2021-12-21 16:29:05,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:29:05,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973758919] [2021-12-21 16:29:05,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:29:05,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:29:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:29:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 16:29:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 16:29:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 16:29:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 16:29:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 16:29:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 16:29:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 16:29:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 16:29:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-21 16:29:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-21 16:29:05,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-21 16:29:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-21 16:29:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-21 16:29:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:05,570 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-12-21 16:29:05,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:29:05,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973758919] [2021-12-21 16:29:05,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973758919] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:29:05,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:29:05,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 16:29:05,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047321941] [2021-12-21 16:29:05,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:29:05,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 16:29:05,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:29:05,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 16:29:05,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:29:05,573 INFO L87 Difference]: Start difference. First operand 3560 states and 4825 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 16:29:08,924 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:29:13,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:29:13,532 INFO L93 Difference]: Finished difference Result 7644 states and 10470 transitions. [2021-12-21 16:29:13,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 16:29:13,533 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 185 [2021-12-21 16:29:13,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:29:13,563 INFO L225 Difference]: With dead ends: 7644 [2021-12-21 16:29:13,564 INFO L226 Difference]: Without dead ends: 4081 [2021-12-21 16:29:13,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-12-21 16:29:13,587 INFO L933 BasicCegarLoop]: 1631 mSDtfsCounter, 518 mSDsluCounter, 4872 mSDsCounter, 0 mSdLazyCounter, 2610 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 6503 SdHoareTripleChecker+Invalid, 2982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-12-21 16:29:13,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 6503 Invalid, 2982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2610 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2021-12-21 16:29:13,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2021-12-21 16:29:13,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 3563. [2021-12-21 16:29:13,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3563 states, 2613 states have (on average 1.310371220818982) internal successors, (3424), 2658 states have internal predecessors, (3424), 702 states have call successors, (702), 248 states have call predecessors, (702), 247 states have return successors, (700), 683 states have call predecessors, (700), 700 states have call successors, (700) [2021-12-21 16:29:13,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3563 states to 3563 states and 4826 transitions. [2021-12-21 16:29:13,771 INFO L78 Accepts]: Start accepts. Automaton has 3563 states and 4826 transitions. Word has length 185 [2021-12-21 16:29:13,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:29:13,773 INFO L470 AbstractCegarLoop]: Abstraction has 3563 states and 4826 transitions. [2021-12-21 16:29:13,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-21 16:29:13,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3563 states and 4826 transitions. [2021-12-21 16:29:13,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-21 16:29:13,780 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:29:13,780 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:29:13,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 16:29:13,781 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:29:13,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:29:13,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1258493088, now seen corresponding path program 1 times [2021-12-21 16:29:13,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:29:13,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573667628] [2021-12-21 16:29:13,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:29:13,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:29:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 16:29:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 16:29:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 16:29:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 16:29:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 16:29:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 16:29:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 16:29:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 16:29:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-21 16:29:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-21 16:29:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-21 16:29:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-21 16:29:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-21 16:29:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-21 16:29:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:14,448 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-12-21 16:29:14,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:29:14,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573667628] [2021-12-21 16:29:14,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573667628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:29:14,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:29:14,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 16:29:14,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465726002] [2021-12-21 16:29:14,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:29:14,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 16:29:14,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:29:14,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 16:29:14,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:29:14,452 INFO L87 Difference]: Start difference. First operand 3563 states and 4826 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-21 16:29:16,493 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:29:18,511 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:29:24,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:29:24,146 INFO L93 Difference]: Finished difference Result 10343 states and 14184 transitions. [2021-12-21 16:29:24,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 16:29:24,148 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 194 [2021-12-21 16:29:24,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:29:24,185 INFO L225 Difference]: With dead ends: 10343 [2021-12-21 16:29:24,185 INFO L226 Difference]: Without dead ends: 6783 [2021-12-21 16:29:24,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-12-21 16:29:24,206 INFO L933 BasicCegarLoop]: 1787 mSDtfsCounter, 3916 mSDsluCounter, 3813 mSDsCounter, 0 mSdLazyCounter, 2823 mSolverCounterSat, 1825 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4162 SdHoareTripleChecker+Valid, 5600 SdHoareTripleChecker+Invalid, 4649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1825 IncrementalHoareTripleChecker+Valid, 2823 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-12-21 16:29:24,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4162 Valid, 5600 Invalid, 4649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1825 Valid, 2823 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2021-12-21 16:29:24,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6783 states. [2021-12-21 16:29:24,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6783 to 5852. [2021-12-21 16:29:24,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5852 states, 4280 states have (on average 1.3067757009345795) internal successors, (5593), 4360 states have internal predecessors, (5593), 1158 states have call successors, (1158), 414 states have call predecessors, (1158), 413 states have return successors, (1156), 1122 states have call predecessors, (1156), 1156 states have call successors, (1156) [2021-12-21 16:29:24,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5852 states to 5852 states and 7907 transitions. [2021-12-21 16:29:24,517 INFO L78 Accepts]: Start accepts. Automaton has 5852 states and 7907 transitions. Word has length 194 [2021-12-21 16:29:24,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:29:24,519 INFO L470 AbstractCegarLoop]: Abstraction has 5852 states and 7907 transitions. [2021-12-21 16:29:24,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-21 16:29:24,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5852 states and 7907 transitions. [2021-12-21 16:29:24,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-12-21 16:29:24,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:29:24,528 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:29:24,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 16:29:24,529 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:29:24,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:29:24,530 INFO L85 PathProgramCache]: Analyzing trace with hash -322687177, now seen corresponding path program 1 times [2021-12-21 16:29:24,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:29:24,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304226968] [2021-12-21 16:29:24,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:29:24,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:29:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:24,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 16:29:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:24,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:24,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:24,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 16:29:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:24,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 16:29:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 16:29:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 16:29:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 16:29:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 16:29:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 16:29:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-21 16:29:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-21 16:29:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-21 16:29:25,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-21 16:29:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-21 16:29:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-21 16:29:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-21 16:29:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-21 16:29:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-21 16:29:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:25,284 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-12-21 16:29:25,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:29:25,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304226968] [2021-12-21 16:29:25,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304226968] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:29:25,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:29:25,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 16:29:25,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763174735] [2021-12-21 16:29:25,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:29:25,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 16:29:25,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:29:25,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 16:29:25,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:29:25,287 INFO L87 Difference]: Start difference. First operand 5852 states and 7907 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-21 16:29:30,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:29:30,250 INFO L93 Difference]: Finished difference Result 12637 states and 17289 transitions. [2021-12-21 16:29:30,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:29:30,251 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 225 [2021-12-21 16:29:30,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:29:30,287 INFO L225 Difference]: With dead ends: 12637 [2021-12-21 16:29:30,288 INFO L226 Difference]: Without dead ends: 6788 [2021-12-21 16:29:30,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-12-21 16:29:30,314 INFO L933 BasicCegarLoop]: 1623 mSDtfsCounter, 3690 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 2029 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3897 SdHoareTripleChecker+Valid, 3249 SdHoareTripleChecker+Invalid, 3035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2029 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-12-21 16:29:30,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3897 Valid, 3249 Invalid, 3035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2029 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-12-21 16:29:30,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6788 states. [2021-12-21 16:29:30,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6788 to 5852. [2021-12-21 16:29:30,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5852 states, 4280 states have (on average 1.3053738317757009) internal successors, (5587), 4360 states have internal predecessors, (5587), 1158 states have call successors, (1158), 414 states have call predecessors, (1158), 413 states have return successors, (1156), 1122 states have call predecessors, (1156), 1156 states have call successors, (1156) [2021-12-21 16:29:30,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5852 states to 5852 states and 7901 transitions. [2021-12-21 16:29:30,633 INFO L78 Accepts]: Start accepts. Automaton has 5852 states and 7901 transitions. Word has length 225 [2021-12-21 16:29:30,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:29:30,633 INFO L470 AbstractCegarLoop]: Abstraction has 5852 states and 7901 transitions. [2021-12-21 16:29:30,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-21 16:29:30,634 INFO L276 IsEmpty]: Start isEmpty. Operand 5852 states and 7901 transitions. [2021-12-21 16:29:30,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-12-21 16:29:30,643 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:29:30,644 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:29:30,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 16:29:30,644 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:29:30,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:29:30,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1898259317, now seen corresponding path program 1 times [2021-12-21 16:29:30,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:29:30,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564077601] [2021-12-21 16:29:30,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:29:30,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:29:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:30,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 16:29:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:30,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:30,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:30,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 16:29:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:30,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:30,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:30,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 16:29:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:30,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:30,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:30,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 16:29:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 16:29:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 16:29:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:29:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-21 16:29:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 16:29:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:29:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-21 16:29:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-21 16:29:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-21 16:29:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-21 16:29:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-21 16:29:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-21 16:29:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-21 16:29:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-21 16:29:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-21 16:29:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:29:31,451 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-12-21 16:29:31,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:29:31,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564077601] [2021-12-21 16:29:31,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564077601] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:29:31,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:29:31,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-21 16:29:31,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415373508] [2021-12-21 16:29:31,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:29:31,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-21 16:29:31,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:29:31,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-21 16:29:31,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-12-21 16:29:31,454 INFO L87 Difference]: Start difference. First operand 5852 states and 7901 transitions. Second operand has 16 states, 16 states have (on average 7.0) internal successors, (112), 7 states have internal predecessors, (112), 2 states have call successors, (25), 8 states have call predecessors, (25), 4 states have return successors, (22), 5 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-21 16:29:34,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:29:35,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 16:29:43,557 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 []