./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--hwmon--applesmc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_414a03bf-f868-44c8-83b2-3f0ac39b7a26/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_414a03bf-f868-44c8-83b2-3f0ac39b7a26/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_414a03bf-f868-44c8-83b2-3f0ac39b7a26/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_414a03bf-f868-44c8-83b2-3f0ac39b7a26/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--hwmon--applesmc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_414a03bf-f868-44c8-83b2-3f0ac39b7a26/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_414a03bf-f868-44c8-83b2-3f0ac39b7a26/bin/uautomizer-DQz5hQGWxF --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 6c9ee3b8d3e77b5390ed1936207d79ee0d80fba183e0586388b787d2e227c15f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:38:07,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:38:07,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:38:07,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:38:07,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:38:07,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:38:07,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:38:07,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:38:07,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:38:07,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:38:07,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:38:07,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:38:07,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:38:07,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:38:07,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:38:07,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:38:07,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:38:07,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:38:07,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:38:07,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:38:07,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:38:07,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:38:07,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:38:07,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:38:07,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:38:07,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:38:07,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:38:07,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:38:07,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:38:07,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:38:07,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:38:07,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:38:07,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:38:07,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:38:07,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:38:07,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:38:07,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:38:07,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:38:07,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:38:07,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:38:07,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:38:07,704 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_414a03bf-f868-44c8-83b2-3f0ac39b7a26/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 07:38:07,755 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:38:07,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:38:07,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:38:07,756 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:38:07,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:38:07,757 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:38:07,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:38:07,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:38:07,758 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:38:07,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:38:07,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:38:07,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:38:07,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:38:07,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:38:07,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:38:07,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:38:07,761 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:38:07,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:38:07,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:38:07,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:38:07,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:38:07,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:38:07,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:38:07,762 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:38:07,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:38:07,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:38:07,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:38:07,763 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:38:07,763 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:38:07,763 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:38:07,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:38:07,764 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_414a03bf-f868-44c8-83b2-3f0ac39b7a26/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_414a03bf-f868-44c8-83b2-3f0ac39b7a26/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c9ee3b8d3e77b5390ed1936207d79ee0d80fba183e0586388b787d2e227c15f [2021-11-20 07:38:08,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:38:08,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:38:08,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:38:08,154 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:38:08,154 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:38:08,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_414a03bf-f868-44c8-83b2-3f0ac39b7a26/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--hwmon--applesmc.ko-entry_point.cil.out.i [2021-11-20 07:38:08,244 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_414a03bf-f868-44c8-83b2-3f0ac39b7a26/bin/uautomizer-DQz5hQGWxF/data/77145998d/291b6d46af184bac9de816ef80cc232c/FLAGf4bd25320 [2021-11-20 07:38:09,081 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:38:09,083 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_414a03bf-f868-44c8-83b2-3f0ac39b7a26/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--hwmon--applesmc.ko-entry_point.cil.out.i [2021-11-20 07:38:09,123 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_414a03bf-f868-44c8-83b2-3f0ac39b7a26/bin/uautomizer-DQz5hQGWxF/data/77145998d/291b6d46af184bac9de816ef80cc232c/FLAGf4bd25320 [2021-11-20 07:38:09,585 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_414a03bf-f868-44c8-83b2-3f0ac39b7a26/bin/uautomizer-DQz5hQGWxF/data/77145998d/291b6d46af184bac9de816ef80cc232c [2021-11-20 07:38:09,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:38:09,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:38:09,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:38:09,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:38:09,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:38:09,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:38:09" (1/1) ... [2021-11-20 07:38:09,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c4e60f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:09, skipping insertion in model container [2021-11-20 07:38:09,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:38:09" (1/1) ... [2021-11-20 07:38:09,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:38:09,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:38:10,113 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [2367] [2021-11-20 07:38:10,116 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [2368-2369] [2021-11-20 07:38:10,327 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_414a03bf-f868-44c8-83b2-3f0ac39b7a26/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--hwmon--applesmc.ko-entry_point.cil.out.i[76333,76346] [2021-11-20 07:38:10,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:38:10,992 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:38:11,083 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [2367] [2021-11-20 07:38:11,085 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [2368-2369] [2021-11-20 07:38:11,103 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_414a03bf-f868-44c8-83b2-3f0ac39b7a26/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--hwmon--applesmc.ko-entry_point.cil.out.i[76333,76346] [2021-11-20 07:38:11,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:38:11,451 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:38:11,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:11 WrapperNode [2021-11-20 07:38:11,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:38:11,453 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:38:11,453 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:38:11,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:38:11,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:11" (1/1) ... [2021-11-20 07:38:11,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:11" (1/1) ... [2021-11-20 07:38:11,747 INFO L137 Inliner]: procedures = 183, calls = 1786, calls flagged for inlining = 69, calls inlined = 64, statements flattened = 2843 [2021-11-20 07:38:11,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:38:11,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:38:11,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:38:11,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:38:11,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:11" (1/1) ... [2021-11-20 07:38:11,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:11" (1/1) ... [2021-11-20 07:38:11,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:11" (1/1) ... [2021-11-20 07:38:11,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:11" (1/1) ... [2021-11-20 07:38:11,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:11" (1/1) ... [2021-11-20 07:38:11,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:11" (1/1) ... [2021-11-20 07:38:11,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:11" (1/1) ... [2021-11-20 07:38:11,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:38:11,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:38:11,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:38:11,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:38:11,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:11" (1/1) ... [2021-11-20 07:38:11,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:38:12,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_414a03bf-f868-44c8-83b2-3f0ac39b7a26/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:38:12,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_414a03bf-f868-44c8-83b2-3f0ac39b7a26/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:38:12,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_414a03bf-f868-44c8-83b2-3f0ac39b7a26/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:38:12,067 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-20 07:38:12,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-20 07:38:12,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 07:38:12,067 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-20 07:38:12,068 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-20 07:38:12,068 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2021-11-20 07:38:12,068 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2021-11-20 07:38:12,069 INFO L130 BoogieDeclarations]: Found specification of procedure send_command [2021-11-20 07:38:12,069 INFO L138 BoogieDeclarations]: Found implementation of procedure send_command [2021-11-20 07:38:12,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 07:38:12,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 07:38:12,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 07:38:12,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 07:38:12,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:38:12,070 INFO L130 BoogieDeclarations]: Found specification of procedure send_argument [2021-11-20 07:38:12,070 INFO L138 BoogieDeclarations]: Found implementation of procedure send_argument [2021-11-20 07:38:12,070 INFO L130 BoogieDeclarations]: Found specification of procedure applesmc_pm_resume [2021-11-20 07:38:12,071 INFO L138 BoogieDeclarations]: Found implementation of procedure applesmc_pm_resume [2021-11-20 07:38:12,071 INFO L130 BoogieDeclarations]: Found specification of procedure applesmc_get_lower_bound [2021-11-20 07:38:12,071 INFO L138 BoogieDeclarations]: Found implementation of procedure applesmc_get_lower_bound [2021-11-20 07:38:12,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 07:38:12,071 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 07:38:12,071 INFO L130 BoogieDeclarations]: Found specification of procedure applesmc_get_entry_by_key [2021-11-20 07:38:12,072 INFO L138 BoogieDeclarations]: Found implementation of procedure applesmc_get_entry_by_key [2021-11-20 07:38:12,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 07:38:12,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 07:38:12,072 INFO L130 BoogieDeclarations]: Found specification of procedure applesmc_release_accelerometer [2021-11-20 07:38:12,072 INFO L138 BoogieDeclarations]: Found implementation of procedure applesmc_release_accelerometer [2021-11-20 07:38:12,072 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-11-20 07:38:12,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-11-20 07:38:12,073 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 07:38:12,073 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 07:38:12,073 INFO L130 BoogieDeclarations]: Found specification of procedure applesmc_device_init [2021-11-20 07:38:12,073 INFO L138 BoogieDeclarations]: Found implementation of procedure applesmc_device_init [2021-11-20 07:38:12,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:38:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure applesmc_release_light_sensor [2021-11-20 07:38:12,125 INFO L138 BoogieDeclarations]: Found implementation of procedure applesmc_release_light_sensor [2021-11-20 07:38:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-20 07:38:12,125 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-20 07:38:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-20 07:38:12,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-20 07:38:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2021-11-20 07:38:12,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2021-11-20 07:38:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 07:38:12,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 07:38:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure applesmc_destroy_nodes [2021-11-20 07:38:12,126 INFO L138 BoogieDeclarations]: Found implementation of procedure applesmc_destroy_nodes [2021-11-20 07:38:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-20 07:38:12,126 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-20 07:38:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 07:38:12,127 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 07:38:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure applesmc_calibrate [2021-11-20 07:38:12,127 INFO L138 BoogieDeclarations]: Found implementation of procedure applesmc_calibrate [2021-11-20 07:38:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure read_smc [2021-11-20 07:38:12,127 INFO L138 BoogieDeclarations]: Found implementation of procedure read_smc [2021-11-20 07:38:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure applesmc_get_entry_by_index [2021-11-20 07:38:12,127 INFO L138 BoogieDeclarations]: Found implementation of procedure applesmc_get_entry_by_index [2021-11-20 07:38:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:38:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure applesmc_release_key_backlight [2021-11-20 07:38:12,128 INFO L138 BoogieDeclarations]: Found implementation of procedure applesmc_release_key_backlight [2021-11-20 07:38:12,128 INFO L130 BoogieDeclarations]: Found specification of procedure applesmc_read_key [2021-11-20 07:38:12,128 INFO L138 BoogieDeclarations]: Found implementation of procedure applesmc_read_key [2021-11-20 07:38:12,128 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-20 07:38:12,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-20 07:38:12,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:38:12,128 INFO L130 BoogieDeclarations]: Found specification of procedure applesmc_read_s16 [2021-11-20 07:38:12,128 INFO L138 BoogieDeclarations]: Found implementation of procedure applesmc_read_s16 [2021-11-20 07:38:12,128 INFO L130 BoogieDeclarations]: Found specification of procedure applesmc_read_entry [2021-11-20 07:38:12,128 INFO L138 BoogieDeclarations]: Found implementation of procedure applesmc_read_entry [2021-11-20 07:38:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-20 07:38:12,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-20 07:38:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 07:38:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:38:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2021-11-20 07:38:12,129 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2021-11-20 07:38:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 07:38:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_polled_device [2021-11-20 07:38:12,129 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_polled_device [2021-11-20 07:38:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-20 07:38:12,130 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-20 07:38:12,130 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2021-11-20 07:38:12,130 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2021-11-20 07:38:12,130 INFO L130 BoogieDeclarations]: Found specification of procedure applesmc_write_key [2021-11-20 07:38:12,130 INFO L138 BoogieDeclarations]: Found implementation of procedure applesmc_write_key [2021-11-20 07:38:12,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:38:12,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 07:38:12,130 INFO L130 BoogieDeclarations]: Found specification of procedure send_byte [2021-11-20 07:38:12,130 INFO L138 BoogieDeclarations]: Found implementation of procedure send_byte [2021-11-20 07:38:12,130 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-20 07:38:12,131 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-20 07:38:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure applesmc_create_nodes [2021-11-20 07:38:12,131 INFO L138 BoogieDeclarations]: Found implementation of procedure applesmc_create_nodes [2021-11-20 07:38:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-20 07:38:12,131 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-20 07:38:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-20 07:38:12,131 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-20 07:38:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure applesmc_init_smcreg [2021-11-20 07:38:12,131 INFO L138 BoogieDeclarations]: Found implementation of procedure applesmc_init_smcreg [2021-11-20 07:38:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure applesmc_has_key [2021-11-20 07:38:12,132 INFO L138 BoogieDeclarations]: Found implementation of procedure applesmc_has_key [2021-11-20 07:38:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:38:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure applesmc_destroy_smcreg [2021-11-20 07:38:12,132 INFO L138 BoogieDeclarations]: Found implementation of procedure applesmc_destroy_smcreg [2021-11-20 07:38:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 07:38:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-20 07:38:12,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-20 07:38:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:38:12,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:38:12,136 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-20 07:38:12,136 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-20 07:38:12,615 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:38:12,618 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:38:12,723 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 07:51:54,501 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:51:54,529 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:51:54,531 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 07:51:54,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:51:54 BoogieIcfgContainer [2021-11-20 07:51:54,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:51:54,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:51:54,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:51:54,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:51:54,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:38:09" (1/3) ... [2021-11-20 07:51:54,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cfbb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:51:54, skipping insertion in model container [2021-11-20 07:51:54,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:38:11" (2/3) ... [2021-11-20 07:51:54,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53cfbb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:51:54, skipping insertion in model container [2021-11-20 07:51:54,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:51:54" (3/3) ... [2021-11-20 07:51:54,559 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--hwmon--applesmc.ko-entry_point.cil.out.i [2021-11-20 07:51:54,569 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:51:54,569 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:51:54,657 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:51:54,666 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 [2021-11-20 07:51:54,666 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:51:54,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 696 states, 494 states have (on average 1.3785425101214575) internal successors, (681), 516 states have internal predecessors, (681), 154 states have call successors, (154), 47 states have call predecessors, (154), 46 states have return successors, (148), 148 states have call predecessors, (148), 148 states have call successors, (148) [2021-11-20 07:51:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-20 07:51:54,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:51:54,745 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:51:54,746 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:51:54,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:51:54,753 INFO L85 PathProgramCache]: Analyzing trace with hash 2033626244, now seen corresponding path program 1 times [2021-11-20 07:51:54,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:51:54,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293577983] [2021-11-20 07:51:54,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:51:54,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:51:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:51:57,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:51:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:51:57,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:51:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:51:57,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-20 07:51:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:51:57,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 07:51:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:51:57,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:51:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:51:57,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:51:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:51:57,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:51:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:51:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:51:57,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:51:57,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293577983] [2021-11-20 07:51:57,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293577983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:51:57,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:51:57,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:51:57,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015957001] [2021-11-20 07:51:57,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:51:57,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:51:57,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:51:57,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:51:57,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:51:57,304 INFO L87 Difference]: Start difference. First operand has 696 states, 494 states have (on average 1.3785425101214575) internal successors, (681), 516 states have internal predecessors, (681), 154 states have call successors, (154), 47 states have call predecessors, (154), 46 states have return successors, (148), 148 states have call predecessors, (148), 148 states have call successors, (148) Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 07:51:59,533 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:52:01,905 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:52:09,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:52:09,337 INFO L93 Difference]: Finished difference Result 2037 states and 2949 transitions. [2021-11-20 07:52:09,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:52:09,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2021-11-20 07:52:09,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:52:09,377 INFO L225 Difference]: With dead ends: 2037 [2021-11-20 07:52:09,377 INFO L226 Difference]: Without dead ends: 1228 [2021-11-20 07:52:09,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:52:09,401 INFO L933 BasicCegarLoop]: 1002 mSDtfsCounter, 1300 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 769 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 769 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:52:09,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1375 Valid, 2684 Invalid, 1746 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [769 Valid, 975 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2021-11-20 07:52:09,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2021-11-20 07:52:09,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1054. [2021-11-20 07:52:09,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 769 states have (on average 1.377113133940182) internal successors, (1059), 785 states have internal predecessors, (1059), 210 states have call successors, (210), 75 states have call predecessors, (210), 74 states have return successors, (209), 209 states have call predecessors, (209), 209 states have call successors, (209) [2021-11-20 07:52:09,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1478 transitions. [2021-11-20 07:52:09,601 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1478 transitions. Word has length 71 [2021-11-20 07:52:09,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:52:09,602 INFO L470 AbstractCegarLoop]: Abstraction has 1054 states and 1478 transitions. [2021-11-20 07:52:09,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 07:52:09,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1478 transitions. [2021-11-20 07:52:09,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-20 07:52:09,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:52:09,613 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-20 07:52:09,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:52:09,613 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:52:09,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:52:09,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1053310464, now seen corresponding path program 1 times [2021-11-20 07:52:09,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:52:09,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38618777] [2021-11-20 07:52:09,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:52:09,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:52:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:52:10,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:52:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:52:10,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:52:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:52:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-20 07:52:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:52:10,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:52:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:52:10,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 07:52:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:52:10,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:52:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:52:10,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:52:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:52:10,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-20 07:52:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:52:11,009 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-20 07:52:11,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:52:11,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38618777] [2021-11-20 07:52:11,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38618777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:52:11,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:52:11,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:52:11,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659783266] [2021-11-20 07:52:11,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:52:11,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:52:11,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:52:11,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:52:11,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:52:11,015 INFO L87 Difference]: Start difference. First operand 1054 states and 1478 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-20 07:52:13,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:52:15,534 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:52:20,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:52:20,336 INFO L93 Difference]: Finished difference Result 2268 states and 3227 transitions. [2021-11-20 07:52:20,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:52:20,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 86 [2021-11-20 07:52:20,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:52:20,353 INFO L225 Difference]: With dead ends: 2268 [2021-11-20 07:52:20,354 INFO L226 Difference]: Without dead ends: 1225 [2021-11-20 07:52:20,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:52:20,362 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 422 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 356 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:52:20,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 2573 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 677 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2021-11-20 07:52:20,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2021-11-20 07:52:20,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1113. [2021-11-20 07:52:20,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 814 states have (on average 1.382063882063882) internal successors, (1125), 830 states have internal predecessors, (1125), 224 states have call successors, (224), 75 states have call predecessors, (224), 74 states have return successors, (223), 223 states have call predecessors, (223), 223 states have call successors, (223) [2021-11-20 07:52:20,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1572 transitions. [2021-11-20 07:52:20,460 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1572 transitions. Word has length 86 [2021-11-20 07:52:20,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:52:20,461 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 1572 transitions. [2021-11-20 07:52:20,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-20 07:52:20,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1572 transitions. [2021-11-20 07:52:20,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-20 07:52:20,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:52:20,467 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-20 07:52:20,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:52:20,468 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:52:20,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:52:20,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1961793154, now seen corresponding path program 1 times [2021-11-20 07:52:20,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:52:20,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397897139] [2021-11-20 07:52:20,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:52:20,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:52:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:52:21,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 07:52:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:52:21,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:52:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:52:21,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-20 07:52:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:52:21,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-20 07:52:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:52:21,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 07:52:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:52:21,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-20 07:52:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:52:21,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:52:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:52:21,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-20 07:52:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:52:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-20 07:52:21,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:52:21,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397897139] [2021-11-20 07:52:21,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397897139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:52:21,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:52:21,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:52:21,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634158106] [2021-11-20 07:52:21,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:52:21,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:52:21,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:52:21,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:52:21,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:52:21,624 INFO L87 Difference]: Start difference. First operand 1113 states and 1572 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (11), 6 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-20 07:52:23,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 07:52:26,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []