./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--ethernet--intel--e1000--e1000.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ethernet--intel--e1000--e1000.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ad536555636b28c8712c3c5d6c5a0e9b2263c8f80d84abafe69deecd86daf306 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:08:23,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:08:23,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:08:23,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:08:23,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:08:23,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:08:23,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:08:23,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:08:23,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:08:23,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:08:23,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:08:23,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:08:23,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:08:23,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:08:23,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:08:23,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:08:23,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:08:23,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:08:23,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:08:23,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:08:23,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:08:23,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:08:23,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:08:23,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:08:23,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:08:23,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:08:23,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:08:23,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:08:23,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:08:23,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:08:23,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:08:23,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:08:23,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:08:23,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:08:23,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:08:23,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:08:23,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:08:23,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:08:23,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:08:23,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:08:23,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:08:23,848 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:08:23,888 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:08:23,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:08:23,889 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:08:23,890 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:08:23,890 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:08:23,891 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:08:23,891 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:08:23,891 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:08:23,892 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:08:23,892 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:08:23,892 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:08:23,892 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:08:23,893 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:08:23,893 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:08:23,893 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:08:23,894 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:08:23,894 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:08:23,894 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:08:23,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:08:23,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:08:23,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:08:23,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:08:23,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:08:23,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:08:23,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:08:23,897 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:08:23,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:08:23,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:08:23,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:08:23,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:08:23,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:08:23,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:08:23,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:08:23,899 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:08:23,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:08:23,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:08:23,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:08:23,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:08:23,901 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad536555636b28c8712c3c5d6c5a0e9b2263c8f80d84abafe69deecd86daf306 [2021-11-23 02:08:24,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:08:24,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:08:24,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:08:24,308 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:08:24,310 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:08:24,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ethernet--intel--e1000--e1000.ko-entry_point.cil.out.i [2021-11-23 02:08:24,400 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/data/d2016d1a9/61f00277fafd461babe76c8b99ebb342/FLAG274c3428d [2021-11-23 02:08:25,830 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:08:25,831 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ethernet--intel--e1000--e1000.ko-entry_point.cil.out.i [2021-11-23 02:08:25,916 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/data/d2016d1a9/61f00277fafd461babe76c8b99ebb342/FLAG274c3428d [2021-11-23 02:08:26,374 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/data/d2016d1a9/61f00277fafd461babe76c8b99ebb342 [2021-11-23 02:08:26,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:08:26,379 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:08:26,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:08:26,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:08:26,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:08:26,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:08:26" (1/1) ... [2021-11-23 02:08:26,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44adcdb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:26, skipping insertion in model container [2021-11-23 02:08:26,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:08:26" (1/1) ... [2021-11-23 02:08:26,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:08:26,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:08:37,109 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_df6a1a26-28f3-403b-af8b-c8bda87df42a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ethernet--intel--e1000--e1000.ko-entry_point.cil.out.i[826927,826940] [2021-11-23 02:08:37,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:08:37,430 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:08:38,829 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_df6a1a26-28f3-403b-af8b-c8bda87df42a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ethernet--intel--e1000--e1000.ko-entry_point.cil.out.i[826927,826940] [2021-11-23 02:08:38,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:08:39,811 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:08:39,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:39 WrapperNode [2021-11-23 02:08:39,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:08:39,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:08:39,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:08:39,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:08:39,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:39" (1/1) ... [2021-11-23 02:08:40,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:39" (1/1) ... [2021-11-23 02:08:41,444 INFO L137 Inliner]: procedures = 680, calls = 14241, calls flagged for inlining = 319, calls inlined = 270, statements flattened = 26144 [2021-11-23 02:08:41,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:08:41,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:08:41,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:08:41,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:08:41,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:39" (1/1) ... [2021-11-23 02:08:41,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:39" (1/1) ... [2021-11-23 02:08:41,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:39" (1/1) ... [2021-11-23 02:08:41,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:39" (1/1) ... [2021-11-23 02:08:42,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:39" (1/1) ... [2021-11-23 02:08:42,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:39" (1/1) ... [2021-11-23 02:08:42,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:39" (1/1) ... [2021-11-23 02:08:42,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:08:42,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:08:42,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:08:42,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:08:43,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:39" (1/1) ... [2021-11-23 02:08:43,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:08:43,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:08:43,039 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:08:43,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:08:43,093 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-23 02:08:43,094 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-23 02:08:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_fc_after_link_up [2021-11-23 02:08:43,094 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_fc_after_link_up [2021-11-23 02:08:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-23 02:08:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-23 02:08:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_collision_dist [2021-11-23 02:08:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_collision_dist [2021-11-23 02:08:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_ee_clk [2021-11-23 02:08:43,096 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_ee_clk [2021-11-23 02:08:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-23 02:08:43,096 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-23 02:08:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:08:43,096 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:08:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_slot_reset [2021-11-23 02:08:43,097 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_slot_reset [2021-11-23 02:08:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure reg_pattern_test [2021-11-23 02:08:43,097 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_pattern_test [2021-11-23 02:08:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-23 02:08:43,098 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-23 02:08:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 02:08:43,098 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 02:08:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-23 02:08:43,098 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-23 02:08:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_eeprom [2021-11-23 02:08:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_eeprom [2021-11-23 02:08:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:08:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:08:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_manageability [2021-11-23 02:08:43,100 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_manageability [2021-11-23 02:08:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_in_ee_bits [2021-11-23 02:08:43,100 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_in_ee_bits [2021-11-23 02:08:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down_and_stop [2021-11-23 02:08:43,100 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down_and_stop [2021-11-23 02:08:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 02:08:43,101 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 02:08:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-23 02:08:43,101 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-23 02:08:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-23 02:08:43,102 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-23 02:08:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_unmap_and_free_tx_resource [2021-11-23 02:08:43,102 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_unmap_and_free_tx_resource [2021-11-23 02:08:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_6 [2021-11-23 02:08:43,103 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_6 [2021-11-23 02:08:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-23 02:08:43,103 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-23 02:08:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_get_info [2021-11-23 02:08:43,103 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_get_info [2021-11-23 02:08:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 02:08:43,104 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 02:08:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-23 02:08:43,104 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-23 02:08:43,104 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_do_read_eeprom [2021-11-23 02:08:43,105 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_do_read_eeprom [2021-11-23 02:08:43,105 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_rctl [2021-11-23 02:08:43,105 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_rctl [2021-11-23 02:08:43,105 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-23 02:08:43,106 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-23 02:08:43,106 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set [2021-11-23 02:08:43,106 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set [2021-11-23 02:08:43,106 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 02:08:43,106 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 02:08:43,107 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset [2021-11-23 02:08:43,107 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset [2021-11-23 02:08:43,107 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-11-23 02:08:43,107 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-11-23 02:08:43,107 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_eeprom_params [2021-11-23 02:08:43,108 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_eeprom_params [2021-11-23 02:08:43,108 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_fix_features [2021-11-23 02:08:43,108 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_fix_features [2021-11-23 02:08:43,108 INFO L130 BoogieDeclarations]: Found specification of procedure phys_to_virt [2021-11-23 02:08:43,108 INFO L138 BoogieDeclarations]: Found implementation of procedure phys_to_virt [2021-11-23 02:08:43,109 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-23 02:08:43,109 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-23 02:08:43,109 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 02:08:43,109 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 02:08:43,109 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-23 02:08:43,110 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-23 02:08:43,110 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-23 02:08:43,110 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-23 02:08:43,110 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 02:08:43,110 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 02:08:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-23 02:08:43,111 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-23 02:08:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:08:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-23 02:08:43,111 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-23 02:08:43,112 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg [2021-11-23 02:08:43,112 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg [2021-11-23 02:08:43,112 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_speed_and_duplex [2021-11-23 02:08:43,112 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_speed_and_duplex [2021-11-23 02:08:43,112 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_standby_eeprom [2021-11-23 02:08:43,113 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_standby_eeprom [2021-11-23 02:08:43,113 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_bit [2021-11-23 02:08:43,113 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_bit [2021-11-23 02:08:43,113 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-23 02:08:43,114 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-23 02:08:43,114 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure_rx [2021-11-23 02:08:43,114 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure_rx [2021-11-23 02:08:43,114 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 02:08:43,114 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 02:08:43,115 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_hw_dev [2021-11-23 02:08:43,115 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_hw_dev [2021-11-23 02:08:43,115 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_stats [2021-11-23 02:08:43,115 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_stats [2021-11-23 02:08:43,115 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_validate_option [2021-11-23 02:08:43,115 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_validate_option [2021-11-23 02:08:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 02:08:43,116 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 02:08:43,116 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 02:08:43,116 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 02:08:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link [2021-11-23 02:08:43,117 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link [2021-11-23 02:08:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_irq [2021-11-23 02:08:43,117 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_irq [2021-11-23 02:08:43,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:08:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-23 02:08:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-23 02:08:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_link [2021-11-23 02:08:43,118 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_link [2021-11-23 02:08:43,118 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_vlan_mode [2021-11-23 02:08:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_vlan_mode [2021-11-23 02:08:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset [2021-11-23 02:08:43,119 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset [2021-11-23 02:08:43,119 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 02:08:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 02:08:43,120 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_dsp_after_link_change [2021-11-23 02:08:43,120 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_dsp_after_link_change [2021-11-23 02:08:43,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:08:43,120 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_maybe_stop_tx [2021-11-23 02:08:43,121 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_maybe_stop_tx [2021-11-23 02:08:43,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:08:43,121 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 02:08:43,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 02:08:43,121 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2021-11-23 02:08:43,122 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2021-11-23 02:08:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shutdown [2021-11-23 02:08:43,122 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shutdown [2021-11-23 02:08:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2021-11-23 02:08:43,122 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2021-11-23 02:08:43,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_10 [2021-11-23 02:08:43,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_10 [2021-11-23 02:08:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:08:43,123 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:08:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_used [2021-11-23 02:08:43,123 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_used [2021-11-23 02:08:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_disable_receiver [2021-11-23 02:08:43,124 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_disable_receiver [2021-11-23 02:08:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_kill_vid [2021-11-23 02:08:43,124 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_kill_vid [2021-11-23 02:08:43,124 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_force_mac_fc [2021-11-23 02:08:43,125 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_force_mac_fc [2021-11-23 02:08:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-23 02:08:43,125 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-23 02:08:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2021-11-23 02:08:43,125 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2021-11-23 02:08:43,125 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_leave_82542_rst [2021-11-23 02:08:43,126 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_leave_82542_rst [2021-11-23 02:08:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_has_link [2021-11-23 02:08:43,126 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_has_link [2021-11-23 02:08:43,126 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-23 02:08:43,126 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-23 02:08:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 02:08:43,127 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 02:08:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2021-11-23 02:08:43,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2021-11-23 02:08:43,127 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_tx_resources [2021-11-23 02:08:43,128 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_tx_resources [2021-11-23 02:08:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_stats [2021-11-23 02:08:43,128 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_stats [2021-11-23 02:08:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-23 02:08:43,128 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-23 02:08:43,128 INFO L130 BoogieDeclarations]: Found specification of procedure pci_wake_from_d3 [2021-11-23 02:08:43,129 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_wake_from_d3 [2021-11-23 02:08:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure reg_set_and_check [2021-11-23 02:08:43,129 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_set_and_check [2021-11-23 02:08:43,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-23 02:08:43,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-23 02:08:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_frag_len [2021-11-23 02:08:43,130 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_frag_len [2021-11-23 02:08:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:08:43,130 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_netpoll [2021-11-23 02:08:43,130 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_netpoll [2021-11-23 02:08:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-23 02:08:43,131 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-23 02:08:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:08:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-23 02:08:43,131 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-23 02:08:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 02:08:43,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 02:08:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_rx_mode [2021-11-23 02:08:43,132 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_rx_mode [2021-11-23 02:08:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:08:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:08:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-23 02:08:43,133 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-23 02:08:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_change_mtu [2021-11-23 02:08:43,133 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_change_mtu [2021-11-23 02:08:43,133 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_open [2021-11-23 02:08:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_open [2021-11-23 02:08:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-11-23 02:08:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-11-23 02:08:43,134 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_hw_reset [2021-11-23 02:08:43,134 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_hw_reset [2021-11-23 02:08:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_vfta [2021-11-23 02:08:43,135 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_vfta [2021-11-23 02:08:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-23 02:08:43,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-23 02:08:43,135 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_remove [2021-11-23 02:08:43,136 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_remove [2021-11-23 02:08:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_ee_bits [2021-11-23 02:08:43,136 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_ee_bits [2021-11-23 02:08:43,136 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure [2021-11-23 02:08:43,136 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure [2021-11-23 02:08:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-23 02:08:43,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-23 02:08:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-23 02:08:43,137 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-23 02:08:43,137 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:08:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:08:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_cable_length [2021-11-23 02:08:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_cable_length [2021-11-23 02:08:43,138 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-23 02:08:43,138 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-23 02:08:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_ee_clk [2021-11-23 02:08:43,139 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_ee_clk [2021-11-23 02:08:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_rx_resources [2021-11-23 02:08:43,139 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_rx_resources [2021-11-23 02:08:43,139 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_add_vid [2021-11-23 02:08:43,139 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_add_vid [2021-11-23 02:08:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure device_can_wakeup [2021-11-23 02:08:43,140 INFO L138 BoogieDeclarations]: Found implementation of procedure device_can_wakeup [2021-11-23 02:08:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2021-11-23 02:08:43,140 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2021-11-23 02:08:43,140 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-23 02:08:43,141 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-23 02:08:43,141 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_write [2021-11-23 02:08:43,141 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_write [2021-11-23 02:08:43,141 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-23 02:08:43,141 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-23 02:08:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_resume [2021-11-23 02:08:43,142 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_resume [2021-11-23 02:08:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-23 02:08:43,142 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-23 02:08:43,142 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 02:08:43,143 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 02:08:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom [2021-11-23 02:08:43,143 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom [2021-11-23 02:08:43,143 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_enter_82542_rst [2021-11-23 02:08:43,143 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_enter_82542_rst [2021-11-23 02:08:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_acquire_eeprom [2021-11-23 02:08:43,144 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_acquire_eeprom [2021-11-23 02:08:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-23 02:08:43,144 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-23 02:08:43,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:08:43,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:08:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_down_phy [2021-11-23 02:08:43,145 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_down_phy [2021-11-23 02:08:43,145 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-23 02:08:43,145 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-23 02:08:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure pci_select_bars [2021-11-23 02:08:43,146 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_select_bars [2021-11-23 02:08:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_spi_eeprom_ready [2021-11-23 02:08:43,146 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_spi_eeprom_ready [2021-11-23 02:08:43,146 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_clear_mwi [2021-11-23 02:08:43,147 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_clear_mwi [2021-11-23 02:08:43,147 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-23 02:08:43,147 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-23 02:08:43,147 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_up_phy [2021-11-23 02:08:43,147 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_up_phy [2021-11-23 02:08:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:08:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:08:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:08:43,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:08:43,148 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-23 02:08:43,148 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-23 02:08:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-23 02:08:43,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-23 02:08:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_phy_info_task [2021-11-23 02:08:43,149 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_phy_info_task [2021-11-23 02:08:43,149 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_sync_single_for_cpu [2021-11-23 02:08:43,150 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_sync_single_for_cpu [2021-11-23 02:08:43,150 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-23 02:08:43,150 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-23 02:08:43,150 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg_ex [2021-11-23 02:08:43,150 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg_ex [2021-11-23 02:08:43,151 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-23 02:08:43,151 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-23 02:08:43,151 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-23 02:08:43,151 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-23 02:08:43,151 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-23 02:08:43,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 02:08:43,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 02:08:43,152 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-11-23 02:08:43,152 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-11-23 02:08:43,152 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_alloc_frag [2021-11-23 02:08:43,152 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_alloc_frag [2021-11-23 02:08:43,153 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-23 02:08:43,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-23 02:08:43,153 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-23 02:08:43,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-23 02:08:43,153 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_polarity [2021-11-23 02:08:43,154 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_polarity [2021-11-23 02:08:43,154 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 02:08:43,154 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 02:08:43,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:08:43,154 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:08:43,155 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2021-11-23 02:08:43,155 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2021-11-23 02:08:43,155 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-23 02:08:43,155 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-23 02:08:43,155 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_mdi_clk [2021-11-23 02:08:43,156 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_mdi_clk [2021-11-23 02:08:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:08:43,156 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:08:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_mac_to_phy [2021-11-23 02:08:43,156 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_mac_to_phy [2021-11-23 02:08:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom_len [2021-11-23 02:08:43,157 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom_len [2021-11-23 02:08:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 02:08:43,157 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 02:08:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_rx_resources [2021-11-23 02:08:43,157 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_rx_resources [2021-11-23 02:08:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-23 02:08:43,158 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-23 02:08:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_close [2021-11-23 02:08:43,158 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_close [2021-11-23 02:08:43,158 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset_clk_and_crs [2021-11-23 02:08:43,159 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset_clk_and_crs [2021-11-23 02:08:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-23 02:08:43,159 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-23 02:08:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-23 02:08:43,159 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-23 02:08:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-23 02:08:43,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-23 02:08:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-23 02:08:43,160 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-23 02:08:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:08:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:08:43,161 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:08:43,161 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-23 02:08:43,161 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-23 02:08:43,161 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-23 02:08:43,161 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-23 02:08:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_regs_len [2021-11-23 02:08:43,162 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_regs_len [2021-11-23 02:08:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:08:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-23 02:08:43,162 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-23 02:08:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_task [2021-11-23 02:08:43,163 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_task [2021-11-23 02:08:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_features [2021-11-23 02:08:43,163 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_features [2021-11-23 02:08:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2021-11-23 02:08:43,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2021-11-23 02:08:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-23 02:08:43,164 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-23 02:08:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_tx_resources [2021-11-23 02:08:43,164 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_tx_resources [2021-11-23 02:08:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_setup_autoneg [2021-11-23 02:08:43,164 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_setup_autoneg [2021-11-23 02:08:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_mng_vlan [2021-11-23 02:08:43,165 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_mng_vlan [2021-11-23 02:08:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:08:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_6 [2021-11-23 02:08:43,165 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_6 [2021-11-23 02:08:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_watchdog [2021-11-23 02:08:43,166 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_watchdog [2021-11-23 02:08:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_media_type [2021-11-23 02:08:43,166 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_media_type [2021-11-23 02:08:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_eeprom [2021-11-23 02:08:43,167 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_eeprom [2021-11-23 02:08:43,167 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_filter_on_off [2021-11-23 02:08:43,167 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_filter_on_off [2021-11-23 02:08:43,167 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-11-23 02:08:43,167 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-11-23 02:08:43,168 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-23 02:08:43,168 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-23 02:08:43,168 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_nway_reset [2021-11-23 02:08:43,168 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_nway_reset [2021-11-23 02:08:43,168 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-23 02:08:43,169 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-23 02:08:43,169 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_phy_loopback [2021-11-23 02:08:43,169 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_phy_loopback [2021-11-23 02:08:43,169 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 02:08:43,169 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 02:08:43,169 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-23 02:08:43,170 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-23 02:08:43,170 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_all_rx_rings [2021-11-23 02:08:43,170 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_all_rx_rings [2021-11-23 02:08:43,170 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_enable [2021-11-23 02:08:43,170 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_enable [2021-11-23 02:08:43,171 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_up [2021-11-23 02:08:43,171 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_up [2021-11-23 02:08:43,171 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_tx_timeout [2021-11-23 02:08:43,171 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_tx_timeout [2021-11-23 02:08:43,171 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reinit_locked [2021-11-23 02:08:43,171 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reinit_locked [2021-11-23 02:08:43,172 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2021-11-23 02:08:43,172 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2021-11-23 02:08:43,172 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_phy_reg [2021-11-23 02:08:43,172 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_phy_reg [2021-11-23 02:08:43,172 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_rx_resources [2021-11-23 02:08:43,173 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_rx_resources [2021-11-23 02:08:43,173 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_mdi_clk [2021-11-23 02:08:43,173 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_mdi_clk [2021-11-23 02:08:43,173 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-23 02:08:43,173 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-23 02:08:43,174 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-23 02:08:43,174 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-23 02:08:43,174 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_copper_link_rtl_setup [2021-11-23 02:08:43,174 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_copper_link_rtl_setup [2021-11-23 02:08:43,174 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-11-23 02:08:43,175 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-11-23 02:08:43,175 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_eeprom [2021-11-23 02:08:43,175 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_eeprom [2021-11-23 02:08:43,175 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_desc_rings [2021-11-23 02:08:43,175 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_desc_rings [2021-11-23 02:08:43,175 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_set_mwi [2021-11-23 02:08:43,176 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_set_mwi [2021-11-23 02:08:43,176 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-23 02:08:43,176 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-23 02:08:43,176 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 02:08:43,176 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 02:08:43,177 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_polarity_reversal_workaround [2021-11-23 02:08:43,177 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_polarity_reversal_workaround [2021-11-23 02:08:43,177 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-23 02:08:43,177 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-23 02:08:43,177 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-23 02:08:43,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-23 02:08:43,178 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:08:43,178 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:08:43,178 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_link_test [2021-11-23 02:08:43,178 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_link_test [2021-11-23 02:08:43,178 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_mdi_bits [2021-11-23 02:08:43,178 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_mdi_bits [2021-11-23 02:08:43,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:08:43,179 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_82547_tx_fifo_stall_task [2021-11-23 02:08:43,179 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_82547_tx_fifo_stall_task [2021-11-23 02:08:43,179 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs___0 [2021-11-23 02:08:43,179 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs___0 [2021-11-23 02:08:43,180 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_2 [2021-11-23 02:08:43,180 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_2 [2021-11-23 02:08:43,180 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_64k_bound [2021-11-23 02:08:43,180 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_64k_bound [2021-11-23 02:08:43,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:08:43,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:08:43,181 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_spd_dplx [2021-11-23 02:08:43,181 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_spd_dplx [2021-11-23 02:08:43,181 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2021-11-23 02:08:43,181 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2021-11-23 02:08:43,181 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down [2021-11-23 02:08:43,181 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down [2021-11-23 02:08:43,182 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-23 02:08:43,182 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-23 02:08:43,182 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_init_script [2021-11-23 02:08:43,182 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_init_script [2021-11-23 02:08:43,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-23 02:08:43,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-23 02:08:43,183 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-23 02:08:43,183 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-23 02:08:43,183 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-11-23 02:08:43,183 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-11-23 02:08:43,183 INFO L130 BoogieDeclarations]: Found specification of procedure is_multicast_ether_addr [2021-11-23 02:08:43,184 INFO L138 BoogieDeclarations]: Found implementation of procedure is_multicast_ether_addr [2021-11-23 02:08:43,184 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_request_irq [2021-11-23 02:08:43,184 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_request_irq [2021-11-23 02:08:43,184 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_error_detected [2021-11-23 02:08:43,184 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_error_detected [2021-11-23 02:08:43,184 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-23 02:08:43,185 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-23 02:08:43,185 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_eeprom [2021-11-23 02:08:43,185 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_eeprom [2021-11-23 02:08:43,185 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw [2021-11-23 02:08:43,185 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw [2021-11-23 02:08:43,185 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_disable [2021-11-23 02:08:43,186 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_disable [2021-11-23 02:08:43,186 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-11-23 02:08:43,186 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-11-23 02:08:43,186 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-23 02:08:43,186 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-23 02:08:43,186 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs___0 [2021-11-23 02:08:43,187 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs___0 [2021-11-23 02:08:43,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_12 [2021-11-23 02:08:43,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_12 [2021-11-23 02:08:43,187 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2021-11-23 02:08:43,187 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2021-11-23 02:08:43,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_9 [2021-11-23 02:08:43,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_9 [2021-11-23 02:08:43,188 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_tx_ring [2021-11-23 02:08:43,188 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_tx_ring [2021-11-23 02:08:43,188 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_shutdown [2021-11-23 02:08:43,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_shutdown [2021-11-23 02:08:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_tx_resources [2021-11-23 02:08:43,189 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_tx_resources [2021-11-23 02:08:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-23 02:08:43,189 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-23 02:08:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-23 02:08:43,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-23 02:08:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-23 02:08:43,190 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-23 02:08:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_manageability [2021-11-23 02:08:43,190 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_manageability [2021-11-23 02:08:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2021-11-23 02:08:43,190 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2021-11-23 02:08:43,191 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-23 02:08:43,191 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-23 02:08:43,191 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_wol_exclusion [2021-11-23 02:08:43,191 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_wol_exclusion [2021-11-23 02:08:43,191 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 02:08:43,192 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 02:08:43,192 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-23 02:08:43,192 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-23 02:08:43,192 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_ioctl [2021-11-23 02:08:43,192 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_ioctl [2021-11-23 02:08:43,192 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-23 02:08:43,193 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-23 02:08:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_mac [2021-11-23 02:08:43,193 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_mac [2021-11-23 02:08:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:08:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-23 02:08:43,194 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-23 02:08:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_rx_ring [2021-11-23 02:08:43,194 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_rx_ring [2021-11-23 02:08:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-23 02:08:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure skb_free_frag [2021-11-23 02:08:43,194 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_free_frag [2021-11-23 02:08:45,793 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:08:45,799 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:08:47,220 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:09:50,723 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:10:03,745 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:10:03,745 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-23 02:10:03,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:03 BoogieIcfgContainer [2021-11-23 02:10:03,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:10:03,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:10:03,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:10:03,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:10:03,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:08:26" (1/3) ... [2021-11-23 02:10:03,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2637915e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:10:03, skipping insertion in model container [2021-11-23 02:10:03,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:39" (2/3) ... [2021-11-23 02:10:03,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2637915e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:10:03, skipping insertion in model container [2021-11-23 02:10:03,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:03" (3/3) ... [2021-11-23 02:10:03,778 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--ethernet--intel--e1000--e1000.ko-entry_point.cil.out.i [2021-11-23 02:10:03,784 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:10:03,785 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:10:03,886 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:10:03,898 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=FINITE_AUTOMATA, 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 [2021-11-23 02:10:03,899 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:10:04,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 6446 states, 4098 states have (on average 1.3387018057589068) internal successors, (5486), 4195 states have internal predecessors, (5486), 2095 states have call successors, (2095), 254 states have call predecessors, (2095), 253 states have return successors, (2085), 2079 states have call predecessors, (2085), 2085 states have call successors, (2085) [2021-11-23 02:10:04,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-23 02:10:04,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:04,102 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:10:04,103 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:10:04,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:04,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1947453057, now seen corresponding path program 1 times [2021-11-23 02:10:04,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:04,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096831381] [2021-11-23 02:10:04,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:04,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2021-11-23 02:10:05,986 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:10:05,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096831381] [2021-11-23 02:10:05,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096831381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:05,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:05,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:10:05,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128698609] [2021-11-23 02:10:05,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:06,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:10:06,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:10:06,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:10:06,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:10:06,074 INFO L87 Difference]: Start difference. First operand has 6446 states, 4098 states have (on average 1.3387018057589068) internal successors, (5486), 4195 states have internal predecessors, (5486), 2095 states have call successors, (2095), 254 states have call predecessors, (2095), 253 states have return successors, (2085), 2079 states have call predecessors, (2085), 2085 states have call successors, (2085) Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-23 02:10:08,444 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:11,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:10:14,524 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:20,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:24,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:29,680 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:31,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:33,047 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:35,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:37,555 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:42,127 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:42,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:42,569 INFO L93 Difference]: Finished difference Result 19071 states and 28698 transitions. [2021-11-23 02:10:42,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:10:42,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 156 [2021-11-23 02:10:42,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:43,073 INFO L225 Difference]: With dead ends: 19071 [2021-11-23 02:10:43,074 INFO L226 Difference]: Without dead ends: 12605 [2021-11-23 02:10:43,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:10:43,173 INFO L933 BasicCegarLoop]: 10893 mSDtfsCounter, 9289 mSDsluCounter, 9632 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 3 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9295 SdHoareTripleChecker+Valid, 19736 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:43,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9295 Valid, 19736 Invalid, 1605 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1593 Invalid, 9 Unknown, 0 Unchecked, 35.5s Time] [2021-11-23 02:10:43,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12605 states. [2021-11-23 02:10:44,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12605 to 12568. [2021-11-23 02:10:44,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12568 states, 7974 states have (on average 1.3323300727363934) internal successors, (10624), 8142 states have internal predecessors, (10624), 4094 states have call successors, (4094), 500 states have call predecessors, (4094), 499 states have return successors, (4099), 4079 states have call predecessors, (4099), 4093 states have call successors, (4099) [2021-11-23 02:10:44,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12568 states to 12568 states and 18817 transitions. [2021-11-23 02:10:44,784 INFO L78 Accepts]: Start accepts. Automaton has 12568 states and 18817 transitions. Word has length 156 [2021-11-23 02:10:44,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:44,789 INFO L470 AbstractCegarLoop]: Abstraction has 12568 states and 18817 transitions. [2021-11-23 02:10:44,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-23 02:10:44,792 INFO L276 IsEmpty]: Start isEmpty. Operand 12568 states and 18817 transitions. [2021-11-23 02:10:44,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-23 02:10:44,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:44,818 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:10:44,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:10:44,819 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:10:44,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:44,823 INFO L85 PathProgramCache]: Analyzing trace with hash 206284612, now seen corresponding path program 1 times [2021-11-23 02:10:44,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:44,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139972701] [2021-11-23 02:10:44,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:44,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:45,915 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2021-11-23 02:10:45,915 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:10:45,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139972701] [2021-11-23 02:10:45,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139972701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:45,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:45,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:10:45,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820512977] [2021-11-23 02:10:45,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:45,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:10:45,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:10:45,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:10:45,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:10:45,921 INFO L87 Difference]: Start difference. First operand 12568 states and 18817 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:10:48,244 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:50,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:10:54,682 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:58,022 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:02,988 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:05,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:07,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:08,955 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:14,473 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:18,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:19,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:11:19,129 INFO L93 Difference]: Finished difference Result 24806 states and 37139 transitions. [2021-11-23 02:11:19,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:11:19,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 170 [2021-11-23 02:11:19,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:11:19,377 INFO L225 Difference]: With dead ends: 24806 [2021-11-23 02:11:19,377 INFO L226 Difference]: Without dead ends: 24801 [2021-11-23 02:11:19,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:11:19,396 INFO L933 BasicCegarLoop]: 10823 mSDtfsCounter, 9185 mSDsluCounter, 9551 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9191 SdHoareTripleChecker+Valid, 19585 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:11:19,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9191 Valid, 19585 Invalid, 1588 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1581 Invalid, 7 Unknown, 0 Unchecked, 32.4s Time] [2021-11-23 02:11:19,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24801 states. [2021-11-23 02:11:21,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24801 to 24762. [2021-11-23 02:11:21,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24762 states, 15693 states have (on average 1.3323137704709107) internal successors, (20908), 16033 states have internal predecessors, (20908), 8079 states have call successors, (8079), 990 states have call predecessors, (8079), 989 states have return successors, (8096), 8046 states have call predecessors, (8096), 8078 states have call successors, (8096) [2021-11-23 02:11:21,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24762 states to 24762 states and 37083 transitions. [2021-11-23 02:11:21,802 INFO L78 Accepts]: Start accepts. Automaton has 24762 states and 37083 transitions. Word has length 170 [2021-11-23 02:11:21,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:11:21,803 INFO L470 AbstractCegarLoop]: Abstraction has 24762 states and 37083 transitions. [2021-11-23 02:11:21,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:11:21,804 INFO L276 IsEmpty]: Start isEmpty. Operand 24762 states and 37083 transitions. [2021-11-23 02:11:22,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2021-11-23 02:11:22,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:11:22,052 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:11:22,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:11:22,052 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:11:22,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:11:22,054 INFO L85 PathProgramCache]: Analyzing trace with hash -635196666, now seen corresponding path program 1 times [2021-11-23 02:11:22,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:11:22,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760390179] [2021-11-23 02:11:22,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:22,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:11:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:11:23,602 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:11:23,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760390179] [2021-11-23 02:11:23,606 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 02:11:23,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128594481] [2021-11-23 02:11:23,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:11:23,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:11:23,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:11:23,615 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:11:23,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:11:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:11:28,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 15850 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:11:28,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:11:29,807 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2021-11-23 02:11:29,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:11:29,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128594481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:11:29,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:11:29,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:11:29,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604953014] [2021-11-23 02:11:29,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:11:29,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:11:29,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:11:29,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:11:29,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:11:29,812 INFO L87 Difference]: Start difference. First operand 24762 states and 37083 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 2 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) [2021-11-23 02:11:32,069 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:34,880 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:11:37,123 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:41,258 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:43,275 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:48,434 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:52,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:54,088 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:59,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:01,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:04,778 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:05,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:05,206 INFO L93 Difference]: Finished difference Result 49495 states and 74380 transitions. [2021-11-23 02:12:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:12:05,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 2 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) Word has length 532 [2021-11-23 02:12:05,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:05,579 INFO L225 Difference]: With dead ends: 49495 [2021-11-23 02:12:05,580 INFO L226 Difference]: Without dead ends: 24762 [2021-11-23 02:12:05,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:05,810 INFO L933 BasicCegarLoop]: 8802 mSDtfsCounter, 43 mSDsluCounter, 9524 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 2 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 17544 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:05,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 17544 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1571 Invalid, 10 Unknown, 0 Unchecked, 34.3s Time] [2021-11-23 02:12:05,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24762 states. [2021-11-23 02:12:07,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24762 to 24762. [2021-11-23 02:12:07,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24762 states, 15693 states have (on average 1.332058879755305) internal successors, (20904), 16033 states have internal predecessors, (20904), 8079 states have call successors, (8079), 990 states have call predecessors, (8079), 989 states have return successors, (8096), 8046 states have call predecessors, (8096), 8078 states have call successors, (8096) [2021-11-23 02:12:08,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24762 states to 24762 states and 37079 transitions. [2021-11-23 02:12:08,171 INFO L78 Accepts]: Start accepts. Automaton has 24762 states and 37079 transitions. Word has length 532 [2021-11-23 02:12:08,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:08,173 INFO L470 AbstractCegarLoop]: Abstraction has 24762 states and 37079 transitions. [2021-11-23 02:12:08,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 2 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) [2021-11-23 02:12:08,173 INFO L276 IsEmpty]: Start isEmpty. Operand 24762 states and 37079 transitions. [2021-11-23 02:12:08,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2021-11-23 02:12:08,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:08,279 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:08,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:12:08,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:12:08,493 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:12:08,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:08,493 INFO L85 PathProgramCache]: Analyzing trace with hash 51309302, now seen corresponding path program 1 times [2021-11-23 02:12:08,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:08,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889015527] [2021-11-23 02:12:08,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:08,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:10,113 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:10,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889015527] [2021-11-23 02:12:10,113 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 02:12:10,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011472567] [2021-11-23 02:12:10,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:10,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:12:10,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:12:10,116 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:12:10,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:12:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:15,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 15917 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:12:15,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:12:17,119 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2021-11-23 02:12:17,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:12:17,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011472567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:17,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:17,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:12:17,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962967654] [2021-11-23 02:12:17,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:17,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:12:17,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:17,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:12:17,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:17,122 INFO L87 Difference]: Start difference. First operand 24762 states and 37079 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 3 states have call successors, (84), 3 states have call predecessors, (84), 2 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2021-11-23 02:12:19,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:22,925 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:25,953 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:28,005 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:30,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:12:36,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:38,752 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:40,955 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:46,988 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:49,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:12:49,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:12:49,409 INFO L93 Difference]: Finished difference Result 37194 states and 55696 transitions. [2021-11-23 02:12:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:12:49,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 3 states have call successors, (84), 3 states have call predecessors, (84), 2 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) Word has length 537 [2021-11-23 02:12:49,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:12:49,773 INFO L225 Difference]: With dead ends: 37194 [2021-11-23 02:12:49,773 INFO L226 Difference]: Without dead ends: 37189 [2021-11-23 02:12:49,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:49,798 INFO L933 BasicCegarLoop]: 10908 mSDtfsCounter, 9138 mSDsluCounter, 9580 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 2 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9140 SdHoareTripleChecker+Valid, 19701 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:12:49,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9140 Valid, 19701 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1590 Invalid, 9 Unknown, 0 Unchecked, 31.5s Time] [2021-11-23 02:12:49,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37189 states. [2021-11-23 02:12:52,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37189 to 37187. [2021-11-23 02:12:52,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37187 states, 23580 states have (on average 1.3326547921967768) internal successors, (31424), 24090 states have internal predecessors, (31424), 12120 states have call successors, (12120), 1487 states have call predecessors, (12120), 1486 states have return successors, (12145), 12071 states have call predecessors, (12145), 12119 states have call successors, (12145) [2021-11-23 02:12:52,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37187 states to 37187 states and 55689 transitions. [2021-11-23 02:12:52,847 INFO L78 Accepts]: Start accepts. Automaton has 37187 states and 55689 transitions. Word has length 537 [2021-11-23 02:12:52,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:12:52,854 INFO L470 AbstractCegarLoop]: Abstraction has 37187 states and 55689 transitions. [2021-11-23 02:12:52,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 3 states have call successors, (84), 3 states have call predecessors, (84), 2 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2021-11-23 02:12:52,855 INFO L276 IsEmpty]: Start isEmpty. Operand 37187 states and 55689 transitions. [2021-11-23 02:12:53,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2021-11-23 02:12:53,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:12:53,070 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:12:53,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:12:53,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:12:53,286 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:12:53,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:12:53,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1085492942, now seen corresponding path program 1 times [2021-11-23 02:12:53,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:12:53,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889749245] [2021-11-23 02:12:53,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:53,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:12:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:54,205 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:12:54,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889749245] [2021-11-23 02:12:54,206 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 02:12:54,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428307915] [2021-11-23 02:12:54,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:12:54,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:12:54,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:12:54,210 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:12:54,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:12:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:12:58,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 16031 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:12:58,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:12:59,513 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2021-11-23 02:12:59,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:12:59,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428307915] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:12:59,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:12:59,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:12:59,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845420017] [2021-11-23 02:12:59,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:12:59,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:12:59,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:12:59,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:12:59,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:12:59,517 INFO L87 Difference]: Start difference. First operand 37187 states and 55689 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2021-11-23 02:13:01,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:08,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:12,392 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:14,971 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:17,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:22,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:24,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:28,554 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:29,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:13:29,415 INFO L93 Difference]: Finished difference Result 108427 states and 162351 transitions. [2021-11-23 02:13:29,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:13:29,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) Word has length 547 [2021-11-23 02:13:29,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:13:30,169 INFO L225 Difference]: With dead ends: 108427 [2021-11-23 02:13:30,170 INFO L226 Difference]: Without dead ends: 71269 [2021-11-23 02:13:30,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:13:30,468 INFO L933 BasicCegarLoop]: 12331 mSDtfsCounter, 8474 mSDsluCounter, 9541 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 17 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8480 SdHoareTripleChecker+Valid, 21095 SdHoareTripleChecker+Invalid, 1866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:13:30,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8480 Valid, 21095 Invalid, 1866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1842 Invalid, 7 Unknown, 0 Unchecked, 27.4s Time] [2021-11-23 02:13:30,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71269 states. [2021-11-23 02:13:34,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71269 to 71251. [2021-11-23 02:13:34,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71251 states, 45144 states have (on average 1.3305201134148503) internal successors, (60065), 46134 states have internal predecessors, (60065), 23234 states have call successors, (23234), 2879 states have call predecessors, (23234), 2872 states have return successors, (23299), 23131 states have call predecessors, (23299), 23233 states have call successors, (23299) [2021-11-23 02:13:35,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71251 states to 71251 states and 106598 transitions. [2021-11-23 02:13:35,872 INFO L78 Accepts]: Start accepts. Automaton has 71251 states and 106598 transitions. Word has length 547 [2021-11-23 02:13:35,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:13:35,873 INFO L470 AbstractCegarLoop]: Abstraction has 71251 states and 106598 transitions. [2021-11-23 02:13:35,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2021-11-23 02:13:35,873 INFO L276 IsEmpty]: Start isEmpty. Operand 71251 states and 106598 transitions. [2021-11-23 02:13:36,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2021-11-23 02:13:36,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:13:36,640 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:13:36,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:13:36,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:13:36,840 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:13:36,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:13:36,841 INFO L85 PathProgramCache]: Analyzing trace with hash -864038739, now seen corresponding path program 1 times [2021-11-23 02:13:36,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:13:36,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815501875] [2021-11-23 02:13:36,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:36,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:13:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:37,826 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:13:37,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815501875] [2021-11-23 02:13:37,827 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 02:13:37,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007242925] [2021-11-23 02:13:37,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:13:37,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:13:37,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:13:37,828 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:13:37,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:13:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:13:41,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 16200 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:13:41,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:13:42,395 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2021-11-23 02:13:42,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:13:42,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007242925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:13:42,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:13:42,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:13:42,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261451666] [2021-11-23 02:13:42,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:13:42,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:13:42,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:13:42,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:13:42,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:13:42,399 INFO L87 Difference]: Start difference. First operand 71251 states and 106598 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 3 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) [2021-11-23 02:13:44,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:47,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:13:51,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:53,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:56,924 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:13:59,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:01,877 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:06,419 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:07,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:09,577 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:15,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:16,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:16,249 INFO L93 Difference]: Finished difference Result 115401 states and 173567 transitions. [2021-11-23 02:14:16,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:14:16,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 3 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) Word has length 575 [2021-11-23 02:14:16,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:16,808 INFO L225 Difference]: With dead ends: 115401 [2021-11-23 02:14:16,808 INFO L226 Difference]: Without dead ends: 79490 [2021-11-23 02:14:17,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:14:17,189 INFO L933 BasicCegarLoop]: 10936 mSDtfsCounter, 1377 mSDsluCounter, 10065 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1862 SdHoareTripleChecker+Valid, 20216 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:17,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1862 Valid, 20216 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1797 Invalid, 8 Unknown, 0 Unchecked, 31.4s Time] [2021-11-23 02:14:17,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79490 states. [2021-11-23 02:14:21,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79490 to 71261. [2021-11-23 02:14:21,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71261 states, 45152 states have (on average 1.33050584691708) internal successors, (60075), 46142 states have internal predecessors, (60075), 23236 states have call successors, (23236), 2879 states have call predecessors, (23236), 2872 states have return successors, (23301), 23133 states have call predecessors, (23301), 23235 states have call successors, (23301) [2021-11-23 02:14:22,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71261 states to 71261 states and 106612 transitions. [2021-11-23 02:14:22,630 INFO L78 Accepts]: Start accepts. Automaton has 71261 states and 106612 transitions. Word has length 575 [2021-11-23 02:14:22,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:22,631 INFO L470 AbstractCegarLoop]: Abstraction has 71261 states and 106612 transitions. [2021-11-23 02:14:22,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 3 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) [2021-11-23 02:14:22,632 INFO L276 IsEmpty]: Start isEmpty. Operand 71261 states and 106612 transitions. [2021-11-23 02:14:23,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2021-11-23 02:14:23,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:23,184 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:23,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-23 02:14:23,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:23,385 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:23,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:23,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1857453454, now seen corresponding path program 1 times [2021-11-23 02:14:23,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:23,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749255069] [2021-11-23 02:14:23,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:23,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:24,056 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:24,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749255069] [2021-11-23 02:14:24,056 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 02:14:24,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499629283] [2021-11-23 02:14:24,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:24,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:24,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:14:24,058 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:14:24,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:14:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:28,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 16411 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:14:28,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:14:29,648 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2021-11-23 02:14:29,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:14:29,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499629283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:29,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:14:29,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:14:29,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161159280] [2021-11-23 02:14:29,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:29,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:14:29,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:29,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:14:29,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:14:29,651 INFO L87 Difference]: Start difference. First operand 71261 states and 106612 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 2 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2021-11-23 02:14:31,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:36,037 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:38,968 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:43,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:47,442 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:51,955 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:56,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:14:58,059 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:03,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:06,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:06,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:15:06,959 INFO L93 Difference]: Finished difference Result 160825 states and 240461 transitions. [2021-11-23 02:15:06,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:15:06,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 2 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 609 [2021-11-23 02:15:06,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:15:07,749 INFO L225 Difference]: With dead ends: 160825 [2021-11-23 02:15:07,749 INFO L226 Difference]: Without dead ends: 89593 [2021-11-23 02:15:08,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:15:08,050 INFO L933 BasicCegarLoop]: 16776 mSDtfsCounter, 9179 mSDsluCounter, 9564 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 0 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9186 SdHoareTripleChecker+Valid, 25553 SdHoareTripleChecker+Invalid, 2242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:15:08,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9186 Valid, 25553 Invalid, 2242 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2233 Invalid, 9 Unknown, 0 Unchecked, 34.2s Time] [2021-11-23 02:15:08,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89593 states. [2021-11-23 02:15:13,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89593 to 89494. [2021-11-23 02:15:13,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89494 states, 56645 states have (on average 1.3291905728660958) internal successors, (75292), 57887 states have internal predecessors, (75292), 29200 states have call successors, (29200), 3659 states have call predecessors, (29200), 3648 states have return successors, (29277), 29065 states have call predecessors, (29277), 29199 states have call successors, (29277) [2021-11-23 02:15:14,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89494 states to 89494 states and 133769 transitions. [2021-11-23 02:15:14,517 INFO L78 Accepts]: Start accepts. Automaton has 89494 states and 133769 transitions. Word has length 609 [2021-11-23 02:15:14,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:15:14,518 INFO L470 AbstractCegarLoop]: Abstraction has 89494 states and 133769 transitions. [2021-11-23 02:15:14,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 2 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2021-11-23 02:15:14,518 INFO L276 IsEmpty]: Start isEmpty. Operand 89494 states and 133769 transitions. [2021-11-23 02:15:14,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2021-11-23 02:15:14,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:15:14,740 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:15:14,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:15:14,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:15:14,942 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:15:14,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:15:14,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1371593347, now seen corresponding path program 1 times [2021-11-23 02:15:14,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:15:14,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417224238] [2021-11-23 02:15:14,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:15:14,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:15:15,319 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:15:15,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307818446] [2021-11-23 02:15:15,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:15:15,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:15:15,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:15:15,321 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:15:15,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df6a1a26-28f3-403b-af8b-c8bda87df42a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:15:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:15:19,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 16778 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:15:19,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:15:22,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1171 trivial. 0 not checked. [2021-11-23 02:15:22,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:15:22,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:15:22,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417224238] [2021-11-23 02:15:22,245 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:15:22,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307818446] [2021-11-23 02:15:22,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307818446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:15:22,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:15:22,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:15:22,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627652719] [2021-11-23 02:15:22,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:15:22,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:15:22,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:15:22,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:15:22,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:15:22,248 INFO L87 Difference]: Start difference. First operand 89494 states and 133769 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 2 states have call successors, (93), 2 states have call predecessors, (93), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2021-11-23 02:15:24,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:27,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:15:29,516 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:32,074 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:35,043 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:39,418 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:42,313 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:48,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:15:50,700 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 [] [2021-11-23 02:15:55,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:15:55,202 INFO L93 Difference]: Finished difference Result 178902 states and 267465 transitions. [2021-11-23 02:15:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:15:55,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 2 states have call successors, (93), 2 states have call predecessors, (93), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 689 [2021-11-23 02:15:55,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:15:56,393 INFO L225 Difference]: With dead ends: 178902 [2021-11-23 02:15:56,393 INFO L226 Difference]: Without dead ends: 178897 [2021-11-23 02:15:56,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 687 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:15:56,492 INFO L933 BasicCegarLoop]: 10871 mSDtfsCounter, 9108 mSDsluCounter, 9548 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9116 SdHoareTripleChecker+Valid, 19632 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:15:56,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9116 Valid, 19632 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1577 Invalid, 8 Unknown, 0 Unchecked, 28.6s Time] [2021-11-23 02:15:56,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178897 states.