./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7 --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 7a2974a33527a9392dca8d355734fee3e0faaae6e14749128119c28fd0f37e8f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:21:03,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:21:03,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:21:03,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:21:03,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:21:03,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:21:03,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:21:03,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:21:03,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:21:03,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:21:03,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:21:03,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:21:03,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:21:03,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:21:03,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:21:03,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:21:03,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:21:03,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:21:03,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:21:03,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:21:03,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:21:03,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:21:03,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:21:03,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:21:03,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:21:03,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:21:03,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:21:03,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:21:03,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:21:03,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:21:03,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:21:03,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:21:03,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:21:03,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:21:03,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:21:03,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:21:03,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:21:03,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:21:03,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:21:03,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:21:03,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:21:03,831 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:21:03,873 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:21:03,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:21:03,877 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:21:03,877 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:21:03,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:21:03,884 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:21:03,884 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:21:03,885 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:21:03,885 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:21:03,885 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:21:03,886 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:21:03,886 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:21:03,887 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:21:03,887 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:21:03,887 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:21:03,887 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:21:03,888 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:21:03,888 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:21:03,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:21:03,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:21:03,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:21:03,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:21:03,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:21:03,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:21:03,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:21:03,891 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:21:03,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:21:03,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:21:03,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:21:03,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:21:03,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:21:03,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:21:03,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:21:03,893 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:21:03,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:21:03,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:21:03,893 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:21:03,894 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:21:03,894 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_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a2974a33527a9392dca8d355734fee3e0faaae6e14749128119c28fd0f37e8f [2021-11-25 18:21:04,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:21:04,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:21:04,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:21:04,296 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:21:04,296 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:21:04,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i [2021-11-25 18:21:04,374 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/data/f9220a77a/ab0de63e36664f919fb3026d46492d63/FLAGa04058a25 [2021-11-25 18:21:05,375 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:21:05,377 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i [2021-11-25 18:21:05,443 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/data/f9220a77a/ab0de63e36664f919fb3026d46492d63/FLAGa04058a25 [2021-11-25 18:21:05,719 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/data/f9220a77a/ab0de63e36664f919fb3026d46492d63 [2021-11-25 18:21:05,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:21:05,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:21:05,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:21:05,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:21:05,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:21:05,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:21:05" (1/1) ... [2021-11-25 18:21:05,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38975ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:05, skipping insertion in model container [2021-11-25 18:21:05,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:21:05" (1/1) ... [2021-11-25 18:21:05,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:21:05,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:21:09,022 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_9b1ac14c-e425-4720-8ff3-366a6a10b051/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i[386204,386217] [2021-11-25 18:21:09,110 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:21:09,169 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:21:09,779 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_9b1ac14c-e425-4720-8ff3-366a6a10b051/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i[386204,386217] [2021-11-25 18:21:09,790 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:21:10,008 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:21:10,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:10 WrapperNode [2021-11-25 18:21:10,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:21:10,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:21:10,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:21:10,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:21:10,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:10" (1/1) ... [2021-11-25 18:21:10,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:10" (1/1) ... [2021-11-25 18:21:10,550 INFO L137 Inliner]: procedures = 333, calls = 3594, calls flagged for inlining = 139, calls inlined = 136, statements flattened = 6651 [2021-11-25 18:21:10,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:21:10,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:21:10,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:21:10,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:21:10,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:10" (1/1) ... [2021-11-25 18:21:10,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:10" (1/1) ... [2021-11-25 18:21:10,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:10" (1/1) ... [2021-11-25 18:21:10,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:10" (1/1) ... [2021-11-25 18:21:10,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:10" (1/1) ... [2021-11-25 18:21:11,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:10" (1/1) ... [2021-11-25 18:21:11,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:10" (1/1) ... [2021-11-25 18:21:11,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:21:11,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:21:11,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:21:11,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:21:11,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:10" (1/1) ... [2021-11-25 18:21:11,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:21:11,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:21:11,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:21:11,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:21:11,208 INFO L130 BoogieDeclarations]: Found specification of procedure disable_ast [2021-11-25 18:21:11,209 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_ast [2021-11-25 18:21:11,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-25 18:21:11,209 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-25 18:21:11,209 INFO L130 BoogieDeclarations]: Found specification of procedure type3_infoblock [2021-11-25 18:21:11,209 INFO L138 BoogieDeclarations]: Found implementation of procedure type3_infoblock [2021-11-25 18:21:11,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:21:11,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:21:11,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:21:11,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:21:11,210 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_interrupt [2021-11-25 18:21:11,210 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_interrupt [2021-11-25 18:21:11,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:21:11,210 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:21:11,210 INFO L130 BoogieDeclarations]: Found specification of procedure reset_init_sia [2021-11-25 18:21:11,210 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_init_sia [2021-11-25 18:21:11,210 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-25 18:21:11,211 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-25 18:21:11,211 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 18:21:11,211 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 18:21:11,211 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_alloc_rx_buff [2021-11-25 18:21:11,211 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_alloc_rx_buff [2021-11-25 18:21:11,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-25 18:21:11,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-25 18:21:11,211 INFO L130 BoogieDeclarations]: Found specification of procedure test_for_100Mb [2021-11-25 18:21:11,212 INFO L138 BoogieDeclarations]: Found implementation of procedure test_for_100Mb [2021-11-25 18:21:11,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:21:11,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:21:11,212 INFO L130 BoogieDeclarations]: Found specification of procedure type4_infoblock [2021-11-25 18:21:11,212 INFO L138 BoogieDeclarations]: Found implementation of procedure type4_infoblock [2021-11-25 18:21:11,212 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_put_cache [2021-11-25 18:21:11,212 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_put_cache [2021-11-25 18:21:11,212 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2021-11-25 18:21:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2021-11-25 18:21:11,213 INFO L130 BoogieDeclarations]: Found specification of procedure type5_infoblock [2021-11-25 18:21:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure type5_infoblock [2021-11-25 18:21:11,213 INFO L130 BoogieDeclarations]: Found specification of procedure load_packet [2021-11-25 18:21:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure load_packet [2021-11-25 18:21:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-25 18:21:11,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-25 18:21:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure getfrom_mii [2021-11-25 18:21:11,214 INFO L138 BoogieDeclarations]: Found implementation of procedure getfrom_mii [2021-11-25 18:21:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140m_autoconf [2021-11-25 18:21:11,214 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140m_autoconf [2021-11-25 18:21:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_switch_mac_port [2021-11-25 18:21:11,215 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_switch_mac_port [2021-11-25 18:21:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 18:21:11,215 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 18:21:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure srom_latch [2021-11-25 18:21:11,216 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_latch [2021-11-25 18:21:11,216 INFO L130 BoogieDeclarations]: Found specification of procedure is_100_up [2021-11-25 18:21:11,217 INFO L138 BoogieDeclarations]: Found implementation of procedure is_100_up [2021-11-25 18:21:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_open [2021-11-25 18:21:11,217 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_open [2021-11-25 18:21:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:21:11,217 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:21:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ta [2021-11-25 18:21:11,217 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ta [2021-11-25 18:21:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2021-11-25 18:21:11,218 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2021-11-25 18:21:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 18:21:11,219 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 18:21:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 18:21:11,219 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 18:21:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_autoconf [2021-11-25 18:21:11,219 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_autoconf [2021-11-25 18:21:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2021-11-25 18:21:11,219 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2021-11-25 18:21:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 18:21:11,220 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 18:21:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure build_setup_frame [2021-11-25 18:21:11,220 INFO L138 BoogieDeclarations]: Found implementation of procedure build_setup_frame [2021-11-25 18:21:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure type2_infoblock [2021-11-25 18:21:11,221 INFO L138 BoogieDeclarations]: Found implementation of procedure type2_infoblock [2021-11-25 18:21:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure test_mii_reg [2021-11-25 18:21:11,221 INFO L138 BoogieDeclarations]: Found implementation of procedure test_mii_reg [2021-11-25 18:21:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure type0_infoblock [2021-11-25 18:21:11,221 INFO L138 BoogieDeclarations]: Found implementation of procedure type0_infoblock [2021-11-25 18:21:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_cache_state [2021-11-25 18:21:11,221 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_cache_state [2021-11-25 18:21:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-25 18:21:11,222 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-25 18:21:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:21:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_dbg_media [2021-11-25 18:21:11,223 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_dbg_media [2021-11-25 18:21:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2021-11-25 18:21:11,223 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2021-11-25 18:21:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-25 18:21:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure autoconf_media [2021-11-25 18:21:11,224 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconf_media [2021-11-25 18:21:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_autoconf [2021-11-25 18:21:11,224 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_autoconf [2021-11-25 18:21:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure mii_rd [2021-11-25 18:21:11,225 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_rd [2021-11-25 18:21:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure DevicePresent [2021-11-25 18:21:11,225 INFO L138 BoogieDeclarations]: Found implementation of procedure DevicePresent [2021-11-25 18:21:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-11-25 18:21:11,226 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-11-25 18:21:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ast [2021-11-25 18:21:11,226 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ast [2021-11-25 18:21:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:21:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure dc21143_infoleaf [2021-11-25 18:21:11,226 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21143_infoleaf [2021-11-25 18:21:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2021-11-25 18:21:11,227 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2021-11-25 18:21:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 18:21:11,227 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 18:21:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-25 18:21:11,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-25 18:21:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 18:21:11,228 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 18:21:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2021-11-25 18:21:11,231 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2021-11-25 18:21:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-25 18:21:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_sw_reset [2021-11-25 18:21:11,231 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_sw_reset [2021-11-25 18:21:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:21:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2021-11-25 18:21:11,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~int [2021-11-25 18:21:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-11-25 18:21:11,234 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-11-25 18:21:11,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:21:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure is_10_up [2021-11-25 18:21:11,240 INFO L138 BoogieDeclarations]: Found implementation of procedure is_10_up [2021-11-25 18:21:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-25 18:21:11,240 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-25 18:21:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-11-25 18:21:11,240 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-11-25 18:21:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure is_anc_capable [2021-11-25 18:21:11,240 INFO L138 BoogieDeclarations]: Found implementation of procedure is_anc_capable [2021-11-25 18:21:11,240 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-11-25 18:21:11,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-11-25 18:21:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure type1_infoblock [2021-11-25 18:21:11,241 INFO L138 BoogieDeclarations]: Found implementation of procedure type1_infoblock [2021-11-25 18:21:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-11-25 18:21:11,241 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-11-25 18:21:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 18:21:11,241 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 18:21:11,241 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-25 18:21:11,241 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-25 18:21:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure is_spd_100 [2021-11-25 18:21:11,242 INFO L138 BoogieDeclarations]: Found implementation of procedure is_spd_100 [2021-11-25 18:21:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140_infoleaf [2021-11-25 18:21:11,242 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140_infoleaf [2021-11-25 18:21:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 18:21:11,242 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 18:21:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 18:21:11,242 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 18:21:11,242 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-11-25 18:21:11,242 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-11-25 18:21:11,243 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_queue_pkt [2021-11-25 18:21:11,243 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_queue_pkt [2021-11-25 18:21:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:21:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure sendto_mii [2021-11-25 18:21:11,244 INFO L138 BoogieDeclarations]: Found implementation of procedure sendto_mii [2021-11-25 18:21:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure test_media [2021-11-25 18:21:11,244 INFO L138 BoogieDeclarations]: Found implementation of procedure test_media [2021-11-25 18:21:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_rx_buffs [2021-11-25 18:21:11,244 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_rx_buffs [2021-11-25 18:21:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 18:21:11,244 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 18:21:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 18:21:11,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 18:21:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-25 18:21:11,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-25 18:21:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_tx_buffs [2021-11-25 18:21:11,245 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_tx_buffs [2021-11-25 18:21:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:21:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2021-11-25 18:21:11,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2021-11-25 18:21:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-25 18:21:11,246 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-25 18:21:11,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:21:11,246 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 18:21:11,246 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 18:21:11,246 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 18:21:11,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 18:21:11,246 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2021-11-25 18:21:11,246 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2021-11-25 18:21:11,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:21:11,246 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:21:11,247 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init [2021-11-25 18:21:11,247 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init [2021-11-25 18:21:11,247 INFO L130 BoogieDeclarations]: Found specification of procedure ping_media [2021-11-25 18:21:11,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ping_media [2021-11-25 18:21:11,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-25 18:21:11,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-25 18:21:11,247 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-11-25 18:21:11,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-11-25 18:21:11,247 INFO L130 BoogieDeclarations]: Found specification of procedure srom_autoconf [2021-11-25 18:21:11,248 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_autoconf [2021-11-25 18:21:11,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:21:11,248 INFO L130 BoogieDeclarations]: Found specification of procedure srom_exec [2021-11-25 18:21:11,248 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_exec [2021-11-25 18:21:11,248 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 18:21:11,248 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 18:21:11,248 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-25 18:21:11,248 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-25 18:21:11,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:21:11,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:21:11,249 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_tx [2021-11-25 18:21:11,249 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_tx [2021-11-25 18:21:11,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-25 18:21:11,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-25 18:21:11,249 INFO L130 BoogieDeclarations]: Found specification of procedure gep_wr [2021-11-25 18:21:11,249 INFO L138 BoogieDeclarations]: Found implementation of procedure gep_wr [2021-11-25 18:21:11,249 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2021-11-25 18:21:11,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2021-11-25 18:21:11,249 INFO L130 BoogieDeclarations]: Found specification of procedure srom_rd [2021-11-25 18:21:11,250 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_rd [2021-11-25 18:21:11,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:21:11,250 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 18:21:11,250 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 18:21:11,250 INFO L130 BoogieDeclarations]: Found specification of procedure sendto_srom [2021-11-25 18:21:11,250 INFO L138 BoogieDeclarations]: Found implementation of procedure sendto_srom [2021-11-25 18:21:11,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-25 18:21:11,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-25 18:21:11,250 INFO L130 BoogieDeclarations]: Found specification of procedure SetMulticastFilter [2021-11-25 18:21:11,251 INFO L138 BoogieDeclarations]: Found implementation of procedure SetMulticastFilter [2021-11-25 18:21:11,251 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-25 18:21:11,251 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-25 18:21:11,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:21:11,251 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ioctl [2021-11-25 18:21:11,251 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ioctl [2021-11-25 18:21:11,251 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_get_cache [2021-11-25 18:21:11,251 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_get_cache [2021-11-25 18:21:11,251 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 18:21:11,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 18:21:11,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:21:11,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-25 18:21:11,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-25 18:21:11,252 INFO L130 BoogieDeclarations]: Found specification of procedure getfrom_srom [2021-11-25 18:21:11,252 INFO L138 BoogieDeclarations]: Found implementation of procedure getfrom_srom [2021-11-25 18:21:11,252 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_3 [2021-11-25 18:21:11,252 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_3 [2021-11-25 18:21:11,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2021-11-25 18:21:11,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2021-11-25 18:21:11,253 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:21:11,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:21:11,257 INFO L130 BoogieDeclarations]: Found specification of procedure mii_swap [2021-11-25 18:21:11,257 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_swap [2021-11-25 18:21:11,257 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_suspect_state [2021-11-25 18:21:11,257 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_suspect_state [2021-11-25 18:21:11,257 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_dbg_mii [2021-11-25 18:21:11,258 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_dbg_mii [2021-11-25 18:21:11,258 INFO L130 BoogieDeclarations]: Found specification of procedure compact_infoblock [2021-11-25 18:21:11,258 INFO L138 BoogieDeclarations]: Found implementation of procedure compact_infoblock [2021-11-25 18:21:11,258 INFO L130 BoogieDeclarations]: Found specification of procedure gep_rd [2021-11-25 18:21:11,259 INFO L138 BoogieDeclarations]: Found implementation of procedure gep_rd [2021-11-25 18:21:11,259 INFO L130 BoogieDeclarations]: Found specification of procedure mii_address [2021-11-25 18:21:11,259 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_address [2021-11-25 18:21:11,259 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_reset_phy [2021-11-25 18:21:11,259 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_reset_phy [2021-11-25 18:21:11,259 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_putb_cache [2021-11-25 18:21:11,260 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_putb_cache [2021-11-25 18:21:11,260 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_tx_buff [2021-11-25 18:21:11,260 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_tx_buff [2021-11-25 18:21:11,260 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_setup_intr [2021-11-25 18:21:11,260 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_setup_intr [2021-11-25 18:21:11,260 INFO L130 BoogieDeclarations]: Found specification of procedure dc21142_infoleaf [2021-11-25 18:21:11,260 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21142_infoleaf [2021-11-25 18:21:11,260 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_get_stats [2021-11-25 18:21:11,260 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_get_stats [2021-11-25 18:21:11,260 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_save_skbs [2021-11-25 18:21:11,261 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_save_skbs [2021-11-25 18:21:11,261 INFO L130 BoogieDeclarations]: Found specification of procedure dc2114x_autoconf [2021-11-25 18:21:11,261 INFO L138 BoogieDeclarations]: Found implementation of procedure dc2114x_autoconf [2021-11-25 18:21:11,261 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-25 18:21:11,261 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-25 18:21:11,261 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-25 18:21:11,261 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-25 18:21:11,261 INFO L130 BoogieDeclarations]: Found specification of procedure srom_map_media [2021-11-25 18:21:11,261 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_map_media [2021-11-25 18:21:11,261 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2021-11-25 18:21:11,262 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2021-11-25 18:21:11,262 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_close [2021-11-25 18:21:11,262 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_close [2021-11-25 18:21:11,262 INFO L130 BoogieDeclarations]: Found specification of procedure yawn [2021-11-25 18:21:11,262 INFO L138 BoogieDeclarations]: Found implementation of procedure yawn [2021-11-25 18:21:11,262 INFO L130 BoogieDeclarations]: Found specification of procedure mii_wdata [2021-11-25 18:21:11,262 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_wdata [2021-11-25 18:21:11,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:21:11,262 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init_connection [2021-11-25 18:21:11,262 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init_connection [2021-11-25 18:21:11,263 INFO L130 BoogieDeclarations]: Found specification of procedure mii_wr [2021-11-25 18:21:11,263 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_wr [2021-11-25 18:21:11,263 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-25 18:21:11,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:21:11,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:21:11,263 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_state [2021-11-25 18:21:11,263 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_state [2021-11-25 18:21:12,420 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:21:12,428 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:21:12,800 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:21:28,094 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:21:31,322 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:21:31,323 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-25 18:21:31,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:21:31 BoogieIcfgContainer [2021-11-25 18:21:31,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:21:31,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:21:31,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:21:31,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:21:31,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:21:05" (1/3) ... [2021-11-25 18:21:31,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bfea76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:21:31, skipping insertion in model container [2021-11-25 18:21:31,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:21:10" (2/3) ... [2021-11-25 18:21:31,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bfea76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:21:31, skipping insertion in model container [2021-11-25 18:21:31,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:21:31" (3/3) ... [2021-11-25 18:21:31,352 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--dec--tulip--de4x5.ko-entry_point.cil.out.i [2021-11-25 18:21:31,363 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:21:31,363 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:21:31,435 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:21:31,448 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 [2021-11-25 18:21:31,448 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:21:31,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 2706 states, 1731 states have (on average 1.3575967648757943) internal successors, (2350), 1793 states have internal predecessors, (2350), 854 states have call successors, (854), 136 states have call predecessors, (854), 135 states have return successors, (846), 835 states have call predecessors, (846), 846 states have call successors, (846) [2021-11-25 18:21:31,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-25 18:21:31,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:31,563 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-25 18:21:31,563 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:31,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:31,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1596020278, now seen corresponding path program 1 times [2021-11-25 18:21:31,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:31,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598266599] [2021-11-25 18:21:31,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:31,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:32,403 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-25 18:21:32,404 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:32,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598266599] [2021-11-25 18:21:32,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598266599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:32,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:32,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:21:32,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290036172] [2021-11-25 18:21:32,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:32,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:21:32,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:32,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:21:32,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:21:32,453 INFO L87 Difference]: Start difference. First operand has 2706 states, 1731 states have (on average 1.3575967648757943) internal successors, (2350), 1793 states have internal predecessors, (2350), 854 states have call successors, (854), 136 states have call predecessors, (854), 135 states have return successors, (846), 835 states have call predecessors, (846), 846 states have call successors, (846) Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-25 18:21:34,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:39,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:39,169 INFO L93 Difference]: Finished difference Result 7765 states and 11873 transitions. [2021-11-25 18:21:39,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:21:39,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2021-11-25 18:21:39,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:39,235 INFO L225 Difference]: With dead ends: 7765 [2021-11-25 18:21:39,236 INFO L226 Difference]: Without dead ends: 5051 [2021-11-25 18:21:39,270 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 [2021-11-25 18:21:39,273 INFO L933 BasicCegarLoop]: 4430 mSDtfsCounter, 3578 mSDsluCounter, 3874 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3578 SdHoareTripleChecker+Valid, 7930 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:39,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3578 Valid, 7930 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 843 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-25 18:21:39,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5051 states. [2021-11-25 18:21:39,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5051 to 5045. [2021-11-25 18:21:39,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5045 states, 3207 states have (on average 1.3489242282507017) internal successors, (4326), 3284 states have internal predecessors, (4326), 1578 states have call successors, (1578), 260 states have call predecessors, (1578), 259 states have return successors, (1577), 1555 states have call predecessors, (1577), 1577 states have call successors, (1577) [2021-11-25 18:21:39,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5045 states to 5045 states and 7481 transitions. [2021-11-25 18:21:39,777 INFO L78 Accepts]: Start accepts. Automaton has 5045 states and 7481 transitions. Word has length 102 [2021-11-25 18:21:39,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:39,779 INFO L470 AbstractCegarLoop]: Abstraction has 5045 states and 7481 transitions. [2021-11-25 18:21:39,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-25 18:21:39,781 INFO L276 IsEmpty]: Start isEmpty. Operand 5045 states and 7481 transitions. [2021-11-25 18:21:39,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 18:21:39,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:39,788 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-25 18:21:39,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:21:39,789 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:39,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:39,790 INFO L85 PathProgramCache]: Analyzing trace with hash -631487762, now seen corresponding path program 1 times [2021-11-25 18:21:39,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:39,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597159259] [2021-11-25 18:21:39,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:39,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-25 18:21:40,183 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:40,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597159259] [2021-11-25 18:21:40,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597159259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:40,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:40,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:21:40,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446612746] [2021-11-25 18:21:40,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:40,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:21:40,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:40,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:21:40,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:21:40,186 INFO L87 Difference]: Start difference. First operand 5045 states and 7481 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:21:42,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:21:51,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:21:51,973 INFO L93 Difference]: Finished difference Result 15121 states and 22576 transitions. [2021-11-25 18:21:51,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:21:51,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 131 [2021-11-25 18:21:51,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:21:52,084 INFO L225 Difference]: With dead ends: 15121 [2021-11-25 18:21:52,085 INFO L226 Difference]: Without dead ends: 10093 [2021-11-25 18:21:52,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:21:52,133 INFO L933 BasicCegarLoop]: 4812 mSDtfsCounter, 3917 mSDsluCounter, 14453 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3921 SdHoareTripleChecker+Valid, 18026 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:21:52,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3921 Valid, 18026 Invalid, 1707 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1703 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2021-11-25 18:21:52,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10093 states. [2021-11-25 18:21:53,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10093 to 10064. [2021-11-25 18:21:53,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10064 states, 6402 states have (on average 1.3495782567947516) internal successors, (8640), 6560 states have internal predecessors, (8640), 3144 states have call successors, (3144), 518 states have call predecessors, (3144), 517 states have return successors, (3288), 3091 states have call predecessors, (3288), 3143 states have call successors, (3288) [2021-11-25 18:21:53,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10064 states to 10064 states and 15072 transitions. [2021-11-25 18:21:53,126 INFO L78 Accepts]: Start accepts. Automaton has 10064 states and 15072 transitions. Word has length 131 [2021-11-25 18:21:53,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:21:53,129 INFO L470 AbstractCegarLoop]: Abstraction has 10064 states and 15072 transitions. [2021-11-25 18:21:53,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:21:53,130 INFO L276 IsEmpty]: Start isEmpty. Operand 10064 states and 15072 transitions. [2021-11-25 18:21:53,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-25 18:21:53,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:21:53,143 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-25 18:21:53,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:21:53,143 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:21:53,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:21:53,144 INFO L85 PathProgramCache]: Analyzing trace with hash 414724431, now seen corresponding path program 1 times [2021-11-25 18:21:53,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:21:53,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572188893] [2021-11-25 18:21:53,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:21:53,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:21:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:21:53,473 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-25 18:21:53,474 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:21:53,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572188893] [2021-11-25 18:21:53,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572188893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:21:53,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:21:53,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:21:53,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661573096] [2021-11-25 18:21:53,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:21:53,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:21:53,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:21:53,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:21:53,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:21:53,479 INFO L87 Difference]: Start difference. First operand 10064 states and 15072 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:21:55,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:03,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:03,460 INFO L93 Difference]: Finished difference Result 30202 states and 45238 transitions. [2021-11-25 18:22:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:22:03,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 134 [2021-11-25 18:22:03,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:03,685 INFO L225 Difference]: With dead ends: 30202 [2021-11-25 18:22:03,685 INFO L226 Difference]: Without dead ends: 20155 [2021-11-25 18:22:03,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:22:03,777 INFO L933 BasicCegarLoop]: 4568 mSDtfsCounter, 3918 mSDsluCounter, 13858 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3922 SdHoareTripleChecker+Valid, 17219 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:03,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3922 Valid, 17219 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1645 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2021-11-25 18:22:03,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20155 states. [2021-11-25 18:22:04,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20155 to 20112. [2021-11-25 18:22:04,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20112 states, 12794 states have (on average 1.349851492887291) internal successors, (17270), 13126 states have internal predecessors, (17270), 6280 states have call successors, (6280), 1038 states have call predecessors, (6280), 1037 states have return successors, (6569), 6159 states have call predecessors, (6569), 6279 states have call successors, (6569) [2021-11-25 18:22:05,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20112 states to 20112 states and 30119 transitions. [2021-11-25 18:22:05,487 INFO L78 Accepts]: Start accepts. Automaton has 20112 states and 30119 transitions. Word has length 134 [2021-11-25 18:22:05,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:05,490 INFO L470 AbstractCegarLoop]: Abstraction has 20112 states and 30119 transitions. [2021-11-25 18:22:05,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:22:05,491 INFO L276 IsEmpty]: Start isEmpty. Operand 20112 states and 30119 transitions. [2021-11-25 18:22:05,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-25 18:22:05,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:05,498 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:22:05,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:22:05,498 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:22:05,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:05,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1535226547, now seen corresponding path program 1 times [2021-11-25 18:22:05,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:05,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783246610] [2021-11-25 18:22:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:05,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:05,795 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-25 18:22:05,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:05,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783246610] [2021-11-25 18:22:05,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783246610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:05,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:05,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:22:05,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521025167] [2021-11-25 18:22:05,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:05,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:22:05,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:05,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:22:05,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:22:05,799 INFO L87 Difference]: Start difference. First operand 20112 states and 30119 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:22:07,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:12,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:12,938 INFO L93 Difference]: Finished difference Result 31511 states and 46984 transitions. [2021-11-25 18:22:12,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:22:12,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 135 [2021-11-25 18:22:12,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:13,097 INFO L225 Difference]: With dead ends: 31511 [2021-11-25 18:22:13,098 INFO L226 Difference]: Without dead ends: 20176 [2021-11-25 18:22:13,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:22:13,179 INFO L933 BasicCegarLoop]: 3546 mSDtfsCounter, 3912 mSDsluCounter, 7837 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3916 SdHoareTripleChecker+Valid, 10625 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:13,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3916 Valid, 10625 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1155 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-25 18:22:13,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20176 states. [2021-11-25 18:22:14,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20176 to 20128. [2021-11-25 18:22:14,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20128 states, 12810 states have (on average 1.3494145199063232) internal successors, (17286), 13138 states have internal predecessors, (17286), 6276 states have call successors, (6276), 1042 states have call predecessors, (6276), 1041 states have return successors, (6565), 6159 states have call predecessors, (6565), 6275 states have call successors, (6565) [2021-11-25 18:22:14,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20128 states to 20128 states and 30127 transitions. [2021-11-25 18:22:14,785 INFO L78 Accepts]: Start accepts. Automaton has 20128 states and 30127 transitions. Word has length 135 [2021-11-25 18:22:14,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:14,786 INFO L470 AbstractCegarLoop]: Abstraction has 20128 states and 30127 transitions. [2021-11-25 18:22:14,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:22:14,787 INFO L276 IsEmpty]: Start isEmpty. Operand 20128 states and 30127 transitions. [2021-11-25 18:22:14,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-25 18:22:14,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:14,794 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-25 18:22:14,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:22:14,795 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:22:14,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:14,795 INFO L85 PathProgramCache]: Analyzing trace with hash -803598729, now seen corresponding path program 1 times [2021-11-25 18:22:14,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:14,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787224719] [2021-11-25 18:22:14,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:14,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:15,083 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-25 18:22:15,083 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:15,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787224719] [2021-11-25 18:22:15,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787224719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:15,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:15,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:22:15,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345859422] [2021-11-25 18:22:15,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:15,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:22:15,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:15,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:22:15,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:22:15,086 INFO L87 Difference]: Start difference. First operand 20128 states and 30127 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:22:17,129 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:26,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:26,829 INFO L93 Difference]: Finished difference Result 41614 states and 62093 transitions. [2021-11-25 18:22:26,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:22:26,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 132 [2021-11-25 18:22:26,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:27,054 INFO L225 Difference]: With dead ends: 41614 [2021-11-25 18:22:27,054 INFO L226 Difference]: Without dead ends: 30263 [2021-11-25 18:22:27,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:22:27,136 INFO L933 BasicCegarLoop]: 4404 mSDtfsCounter, 3913 mSDsluCounter, 13527 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3917 SdHoareTripleChecker+Valid, 16800 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:27,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3917 Valid, 16800 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1537 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2021-11-25 18:22:27,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30263 states. [2021-11-25 18:22:29,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30263 to 30188. [2021-11-25 18:22:29,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30188 states, 19224 states have (on average 1.349250936329588) internal successors, (25938), 19700 states have internal predecessors, (25938), 9402 states have call successors, (9402), 1562 states have call predecessors, (9402), 1561 states have return successors, (9981), 9239 states have call predecessors, (9981), 9401 states have call successors, (9981) [2021-11-25 18:22:29,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30188 states to 30188 states and 45321 transitions. [2021-11-25 18:22:29,738 INFO L78 Accepts]: Start accepts. Automaton has 30188 states and 45321 transitions. Word has length 132 [2021-11-25 18:22:29,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:29,739 INFO L470 AbstractCegarLoop]: Abstraction has 30188 states and 45321 transitions. [2021-11-25 18:22:29,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:22:29,740 INFO L276 IsEmpty]: Start isEmpty. Operand 30188 states and 45321 transitions. [2021-11-25 18:22:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-25 18:22:29,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:29,746 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-25 18:22:29,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:22:29,747 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:22:29,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:29,748 INFO L85 PathProgramCache]: Analyzing trace with hash -788905108, now seen corresponding path program 1 times [2021-11-25 18:22:29,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:29,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470669868] [2021-11-25 18:22:29,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:29,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:30,383 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-25 18:22:30,383 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:30,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470669868] [2021-11-25 18:22:30,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470669868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:30,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:30,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:22:30,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317324468] [2021-11-25 18:22:30,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:30,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:22:30,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:30,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:22:30,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:22:30,388 INFO L87 Difference]: Start difference. First operand 30188 states and 45321 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:22:32,436 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:40,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:40,015 INFO L93 Difference]: Finished difference Result 47318 states and 70701 transitions. [2021-11-25 18:22:40,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:22:40,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 136 [2021-11-25 18:22:40,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:40,202 INFO L225 Difference]: With dead ends: 47318 [2021-11-25 18:22:40,202 INFO L226 Difference]: Without dead ends: 30284 [2021-11-25 18:22:40,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:22:40,301 INFO L933 BasicCegarLoop]: 3546 mSDtfsCounter, 3910 mSDsluCounter, 7837 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3914 SdHoareTripleChecker+Valid, 10625 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:40,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3914 Valid, 10625 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1155 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2021-11-25 18:22:40,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30284 states. [2021-11-25 18:22:42,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30284 to 30212. [2021-11-25 18:22:42,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30212 states, 19248 states have (on average 1.3488154613466334) internal successors, (25962), 19718 states have internal predecessors, (25962), 9396 states have call successors, (9396), 1568 states have call predecessors, (9396), 1567 states have return successors, (9975), 9239 states have call predecessors, (9975), 9395 states have call successors, (9975) [2021-11-25 18:22:42,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30212 states to 30212 states and 45333 transitions. [2021-11-25 18:22:42,752 INFO L78 Accepts]: Start accepts. Automaton has 30212 states and 45333 transitions. Word has length 136 [2021-11-25 18:22:42,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:42,754 INFO L470 AbstractCegarLoop]: Abstraction has 30212 states and 45333 transitions. [2021-11-25 18:22:42,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:22:42,754 INFO L276 IsEmpty]: Start isEmpty. Operand 30212 states and 45333 transitions. [2021-11-25 18:22:42,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-25 18:22:42,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:42,760 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-25 18:22:42,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:22:42,761 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:22:42,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:42,761 INFO L85 PathProgramCache]: Analyzing trace with hash -778811797, now seen corresponding path program 1 times [2021-11-25 18:22:42,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:42,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414642682] [2021-11-25 18:22:42,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:42,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-25 18:22:42,993 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:42,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414642682] [2021-11-25 18:22:42,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414642682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:42,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:42,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:22:42,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892378266] [2021-11-25 18:22:42,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:42,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:22:42,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:42,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:22:42,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:22:42,996 INFO L87 Difference]: Start difference. First operand 30212 states and 45333 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:22:45,037 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:22:55,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:22:55,044 INFO L93 Difference]: Finished difference Result 51734 states and 77315 transitions. [2021-11-25 18:22:55,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:22:55,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 133 [2021-11-25 18:22:55,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:22:55,353 INFO L225 Difference]: With dead ends: 51734 [2021-11-25 18:22:55,353 INFO L226 Difference]: Without dead ends: 30303 [2021-11-25 18:22:55,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:22:55,462 INFO L933 BasicCegarLoop]: 4404 mSDtfsCounter, 3911 mSDsluCounter, 13527 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3915 SdHoareTripleChecker+Valid, 16800 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:22:55,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3915 Valid, 16800 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1537 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2021-11-25 18:22:55,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30303 states. [2021-11-25 18:22:57,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30303 to 30228. [2021-11-25 18:22:57,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30228 states, 19264 states have (on average 1.3485257475083057) internal successors, (25978), 19730 states have internal predecessors, (25978), 9392 states have call successors, (9392), 1572 states have call predecessors, (9392), 1571 states have return successors, (9971), 9239 states have call predecessors, (9971), 9391 states have call successors, (9971) [2021-11-25 18:22:57,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30228 states to 30228 states and 45341 transitions. [2021-11-25 18:22:57,323 INFO L78 Accepts]: Start accepts. Automaton has 30228 states and 45341 transitions. Word has length 133 [2021-11-25 18:22:57,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:22:57,323 INFO L470 AbstractCegarLoop]: Abstraction has 30228 states and 45341 transitions. [2021-11-25 18:22:57,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:22:57,324 INFO L276 IsEmpty]: Start isEmpty. Operand 30228 states and 45341 transitions. [2021-11-25 18:22:57,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-25 18:22:57,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:22:57,330 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-25 18:22:57,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:22:57,330 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:22:57,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:22:57,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1054842708, now seen corresponding path program 1 times [2021-11-25 18:22:57,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:22:57,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193007667] [2021-11-25 18:22:57,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:22:57,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:22:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:22:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-25 18:22:57,567 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:22:57,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193007667] [2021-11-25 18:22:57,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193007667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:22:57,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:22:57,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:22:57,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070273995] [2021-11-25 18:22:57,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:22:57,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:22:57,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:22:57,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:22:57,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:22:57,569 INFO L87 Difference]: Start difference. First operand 30228 states and 45341 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:22:59,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:23:08,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:08,211 INFO L93 Difference]: Finished difference Result 51714 states and 77267 transitions. [2021-11-25 18:23:08,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:23:08,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 134 [2021-11-25 18:23:08,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:08,371 INFO L225 Difference]: With dead ends: 51714 [2021-11-25 18:23:08,371 INFO L226 Difference]: Without dead ends: 30263 [2021-11-25 18:23:08,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:23:08,654 INFO L933 BasicCegarLoop]: 4404 mSDtfsCounter, 3909 mSDsluCounter, 13527 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3913 SdHoareTripleChecker+Valid, 16800 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:08,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3913 Valid, 16800 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1537 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2021-11-25 18:23:08,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30263 states. [2021-11-25 18:23:09,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30263 to 30200. [2021-11-25 18:23:10,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30200 states, 19244 states have (on average 1.3482643940968613) internal successors, (25946), 19706 states have internal predecessors, (25946), 9384 states have call successors, (9384), 1572 states have call predecessors, (9384), 1571 states have return successors, (9963), 9235 states have call predecessors, (9963), 9383 states have call successors, (9963) [2021-11-25 18:23:10,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30200 states to 30200 states and 45293 transitions. [2021-11-25 18:23:10,174 INFO L78 Accepts]: Start accepts. Automaton has 30200 states and 45293 transitions. Word has length 134 [2021-11-25 18:23:10,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:10,175 INFO L470 AbstractCegarLoop]: Abstraction has 30200 states and 45293 transitions. [2021-11-25 18:23:10,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:23:10,175 INFO L276 IsEmpty]: Start isEmpty. Operand 30200 states and 45293 transitions. [2021-11-25 18:23:10,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-25 18:23:10,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:10,181 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-25 18:23:10,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:23:10,182 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:23:10,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:10,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1937482634, now seen corresponding path program 1 times [2021-11-25 18:23:10,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:10,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868337374] [2021-11-25 18:23:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:10,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-25 18:23:10,411 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:10,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868337374] [2021-11-25 18:23:10,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868337374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:10,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:10,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:23:10,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13367630] [2021-11-25 18:23:10,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:10,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:23:10,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:10,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:23:10,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:23:10,415 INFO L87 Difference]: Start difference. First operand 30200 states and 45293 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:23:12,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:23:19,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:19,148 INFO L93 Difference]: Finished difference Result 46963 states and 70110 transitions. [2021-11-25 18:23:19,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:23:19,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 137 [2021-11-25 18:23:19,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:19,288 INFO L225 Difference]: With dead ends: 46963 [2021-11-25 18:23:19,288 INFO L226 Difference]: Without dead ends: 29905 [2021-11-25 18:23:19,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:23:19,360 INFO L933 BasicCegarLoop]: 3546 mSDtfsCounter, 3908 mSDsluCounter, 7837 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3912 SdHoareTripleChecker+Valid, 10625 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:19,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3912 Valid, 10625 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1155 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-11-25 18:23:19,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29905 states. [2021-11-25 18:23:20,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29905 to 29851. [2021-11-25 18:23:20,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29851 states, 19017 states have (on average 1.3481095861597518) internal successors, (25637), 19469 states have internal predecessors, (25637), 9273 states have call successors, (9273), 1561 states have call predecessors, (9273), 1560 states have return successors, (9852), 9131 states have call predecessors, (9852), 9272 states have call successors, (9852) [2021-11-25 18:23:21,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29851 states to 29851 states and 44762 transitions. [2021-11-25 18:23:21,235 INFO L78 Accepts]: Start accepts. Automaton has 29851 states and 44762 transitions. Word has length 137 [2021-11-25 18:23:21,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:21,235 INFO L470 AbstractCegarLoop]: Abstraction has 29851 states and 44762 transitions. [2021-11-25 18:23:21,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-25 18:23:21,236 INFO L276 IsEmpty]: Start isEmpty. Operand 29851 states and 44762 transitions. [2021-11-25 18:23:21,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-25 18:23:21,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:21,244 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-25 18:23:21,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:23:21,245 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:23:21,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:21,245 INFO L85 PathProgramCache]: Analyzing trace with hash -574949944, now seen corresponding path program 1 times [2021-11-25 18:23:21,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:21,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005767868] [2021-11-25 18:23:21,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:21,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-11-25 18:23:21,589 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:21,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005767868] [2021-11-25 18:23:21,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005767868] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:23:21,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174742959] [2021-11-25 18:23:21,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:21,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:21,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:21,592 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:21,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:23:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:22,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 2914 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:23:22,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:23,561 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-25 18:23:23,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:23,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174742959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:23,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:23:23,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-11-25 18:23:23,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105172158] [2021-11-25 18:23:23,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:23,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:23:23,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:23,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:23:23,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:23:23,564 INFO L87 Difference]: Start difference. First operand 29851 states and 44762 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 18:23:25,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:23:32,575 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:23:47,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:47,978 INFO L93 Difference]: Finished difference Result 69922 states and 104921 transitions. [2021-11-25 18:23:47,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:23:47,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 144 [2021-11-25 18:23:47,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:48,174 INFO L225 Difference]: With dead ends: 69922 [2021-11-25 18:23:48,174 INFO L226 Difference]: Without dead ends: 49767 [2021-11-25 18:23:48,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:23:48,254 INFO L933 BasicCegarLoop]: 6771 mSDtfsCounter, 3917 mSDsluCounter, 33984 mSDsCounter, 0 mSdLazyCounter, 4097 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3921 SdHoareTripleChecker+Valid, 37466 SdHoareTripleChecker+Invalid, 4099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4097 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:48,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3921 Valid, 37466 Invalid, 4099 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4097 Invalid, 1 Unknown, 0 Unchecked, 22.7s Time] [2021-11-25 18:23:48,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49767 states. [2021-11-25 18:23:50,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49767 to 49636. [2021-11-25 18:23:50,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49636 states, 31632 states have (on average 1.3485078401618613) internal successors, (42656), 32396 states have internal predecessors, (42656), 15406 states have call successors, (15406), 2590 states have call predecessors, (15406), 2597 states have return successors, (16585), 15161 states have call predecessors, (16585), 15405 states have call successors, (16585) [2021-11-25 18:23:51,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49636 states to 49636 states and 74647 transitions. [2021-11-25 18:23:51,341 INFO L78 Accepts]: Start accepts. Automaton has 49636 states and 74647 transitions. Word has length 144 [2021-11-25 18:23:51,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:51,346 INFO L470 AbstractCegarLoop]: Abstraction has 49636 states and 74647 transitions. [2021-11-25 18:23:51,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 18:23:51,347 INFO L276 IsEmpty]: Start isEmpty. Operand 49636 states and 74647 transitions. [2021-11-25 18:23:51,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-25 18:23:51,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:51,352 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:51,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:51,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:51,563 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:23:51,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:51,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1082106170, now seen corresponding path program 1 times [2021-11-25 18:23:51,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:51,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521990932] [2021-11-25 18:23:51,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:51,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:51,822 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-25 18:23:51,822 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:51,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521990932] [2021-11-25 18:23:51,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521990932] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:23:51,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886394398] [2021-11-25 18:23:51,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:51,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:51,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:51,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:51,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:23:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:53,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 2916 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:23:53,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:53,490 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-25 18:23:53,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:53,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886394398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:53,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:23:53,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-11-25 18:23:53,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659580063] [2021-11-25 18:23:53,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:53,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:23:53,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:53,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:23:53,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:23:53,493 INFO L87 Difference]: Start difference. First operand 49636 states and 74647 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 18:23:55,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:24:15,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:24:15,550 INFO L93 Difference]: Finished difference Result 109536 states and 164731 transitions. [2021-11-25 18:24:15,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:24:15,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 145 [2021-11-25 18:24:15,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:24:16,077 INFO L225 Difference]: With dead ends: 109536 [2021-11-25 18:24:16,077 INFO L226 Difference]: Without dead ends: 69596 [2021-11-25 18:24:16,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:24:16,245 INFO L933 BasicCegarLoop]: 6887 mSDtfsCounter, 3917 mSDsluCounter, 34396 mSDsCounter, 0 mSdLazyCounter, 4048 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3921 SdHoareTripleChecker+Valid, 38034 SdHoareTripleChecker+Invalid, 4050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4048 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:24:16,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3921 Valid, 38034 Invalid, 4050 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4048 Invalid, 1 Unknown, 0 Unchecked, 19.4s Time] [2021-11-25 18:24:16,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69596 states. [2021-11-25 18:24:19,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69596 to 69441. [2021-11-25 18:24:19,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69441 states, 44259 states have (on average 1.3485844686956325) internal successors, (59687), 45347 states have internal predecessors, (59687), 21539 states have call successors, (21539), 3619 states have call predecessors, (21539), 3642 states have return successors, (23330), 21187 states have call predecessors, (23330), 21538 states have call successors, (23330) [2021-11-25 18:24:20,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69441 states to 69441 states and 104556 transitions. [2021-11-25 18:24:20,550 INFO L78 Accepts]: Start accepts. Automaton has 69441 states and 104556 transitions. Word has length 145 [2021-11-25 18:24:20,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:24:20,551 INFO L470 AbstractCegarLoop]: Abstraction has 69441 states and 104556 transitions. [2021-11-25 18:24:20,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 18:24:20,551 INFO L276 IsEmpty]: Start isEmpty. Operand 69441 states and 104556 transitions. [2021-11-25 18:24:20,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-25 18:24:20,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:24:20,561 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-25 18:24:20,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:24:20,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:24:20,777 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:24:20,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:24:20,778 INFO L85 PathProgramCache]: Analyzing trace with hash -2117425631, now seen corresponding path program 1 times [2021-11-25 18:24:20,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:24:20,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394214779] [2021-11-25 18:24:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:20,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:24:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:21,301 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-25 18:24:21,301 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:24:21,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394214779] [2021-11-25 18:24:21,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394214779] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:24:21,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303940781] [2021-11-25 18:24:21,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:21,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:24:21,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:24:21,303 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:24:21,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:24:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:22,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 2918 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:24:22,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:24:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-25 18:24:22,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:24:22,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303940781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:24:22,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:24:22,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-11-25 18:24:22,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129008801] [2021-11-25 18:24:22,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:24:22,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:24:22,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:24:22,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:24:22,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:24:22,842 INFO L87 Difference]: Start difference. First operand 69441 states and 104556 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 18:24:24,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:24:47,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:24:47,053 INFO L93 Difference]: Finished difference Result 149138 states and 224533 transitions. [2021-11-25 18:24:47,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:24:47,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 146 [2021-11-25 18:24:47,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:24:47,634 INFO L225 Difference]: With dead ends: 149138 [2021-11-25 18:24:47,635 INFO L226 Difference]: Without dead ends: 89393 [2021-11-25 18:24:47,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:24:47,918 INFO L933 BasicCegarLoop]: 7065 mSDtfsCounter, 3917 mSDsluCounter, 35252 mSDsCounter, 0 mSdLazyCounter, 4229 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3921 SdHoareTripleChecker+Valid, 38924 SdHoareTripleChecker+Invalid, 4231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4229 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:24:47,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3921 Valid, 38924 Invalid, 4231 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4229 Invalid, 1 Unknown, 0 Unchecked, 20.2s Time] [2021-11-25 18:24:48,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89393 states. [2021-11-25 18:24:52,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89393 to 69445. [2021-11-25 18:24:52,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69445 states, 44263 states have (on average 1.348552967489777) internal successors, (59691), 45347 states have internal predecessors, (59691), 21539 states have call successors, (21539), 3619 states have call predecessors, (21539), 3642 states have return successors, (23330), 21191 states have call predecessors, (23330), 21538 states have call successors, (23330) [2021-11-25 18:24:52,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69445 states to 69445 states and 104560 transitions. [2021-11-25 18:24:52,696 INFO L78 Accepts]: Start accepts. Automaton has 69445 states and 104560 transitions. Word has length 146 [2021-11-25 18:24:52,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:24:52,698 INFO L470 AbstractCegarLoop]: Abstraction has 69445 states and 104560 transitions. [2021-11-25 18:24:52,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 18:24:52,698 INFO L276 IsEmpty]: Start isEmpty. Operand 69445 states and 104560 transitions. [2021-11-25 18:24:52,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-25 18:24:52,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:24:52,707 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-25 18:24:52,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:24:52,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-25 18:24:52,933 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:24:52,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:24:52,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1252360141, now seen corresponding path program 1 times [2021-11-25 18:24:52,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:24:52,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195760508] [2021-11-25 18:24:52,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:52,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:24:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:53,602 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-25 18:24:53,602 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:24:53,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195760508] [2021-11-25 18:24:53,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195760508] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:24:53,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4685962] [2021-11-25 18:24:53,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:24:53,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:24:53,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:24:53,604 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:24:53,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:24:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:24:54,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 2920 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:24:54,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:24:55,268 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-25 18:24:55,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:24:55,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4685962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:24:55,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:24:55,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-11-25 18:24:55,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24359734] [2021-11-25 18:24:55,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:24:55,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:24:55,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:24:55,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:24:55,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:24:55,271 INFO L87 Difference]: Start difference. First operand 69445 states and 104560 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 18:24:57,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:25:03,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:25:20,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:25:20,228 INFO L93 Difference]: Finished difference Result 149150 states and 224545 transitions. [2021-11-25 18:25:20,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:25:20,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 147 [2021-11-25 18:25:20,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:25:20,655 INFO L225 Difference]: With dead ends: 149150 [2021-11-25 18:25:20,655 INFO L226 Difference]: Without dead ends: 89401 [2021-11-25 18:25:20,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:25:20,910 INFO L933 BasicCegarLoop]: 7065 mSDtfsCounter, 3917 mSDsluCounter, 35252 mSDsCounter, 0 mSdLazyCounter, 4229 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3921 SdHoareTripleChecker+Valid, 38924 SdHoareTripleChecker+Invalid, 4231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4229 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:25:20,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3921 Valid, 38924 Invalid, 4231 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 4229 Invalid, 1 Unknown, 0 Unchecked, 21.4s Time] [2021-11-25 18:25:20,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89401 states. [2021-11-25 18:25:25,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89401 to 69449. [2021-11-25 18:25:25,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69449 states, 44267 states have (on average 1.3485214719768677) internal successors, (59695), 45347 states have internal predecessors, (59695), 21539 states have call successors, (21539), 3619 states have call predecessors, (21539), 3642 states have return successors, (23330), 21195 states have call predecessors, (23330), 21538 states have call successors, (23330) [2021-11-25 18:25:25,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69449 states to 69449 states and 104564 transitions. [2021-11-25 18:25:25,896 INFO L78 Accepts]: Start accepts. Automaton has 69449 states and 104564 transitions. Word has length 147 [2021-11-25 18:25:25,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:25:25,896 INFO L470 AbstractCegarLoop]: Abstraction has 69449 states and 104564 transitions. [2021-11-25 18:25:25,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 18:25:25,897 INFO L276 IsEmpty]: Start isEmpty. Operand 69449 states and 104564 transitions. [2021-11-25 18:25:25,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-25 18:25:25,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:25:25,905 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-25 18:25:25,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:25:26,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:25:26,119 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:25:26,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:25:26,120 INFO L85 PathProgramCache]: Analyzing trace with hash 432492216, now seen corresponding path program 1 times [2021-11-25 18:25:26,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:25:26,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988952306] [2021-11-25 18:25:26,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:25:26,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:25:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:25:26,420 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-25 18:25:26,420 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:25:26,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988952306] [2021-11-25 18:25:26,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988952306] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:25:26,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732231916] [2021-11-25 18:25:26,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:25:26,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:25:26,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:25:26,426 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:25:26,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:25:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:25:27,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 2926 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:25:27,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:25:28,054 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-25 18:25:28,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:25:28,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732231916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:25:28,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:25:28,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-11-25 18:25:28,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384402036] [2021-11-25 18:25:28,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:25:28,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:25:28,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:25:28,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:25:28,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:25:28,056 INFO L87 Difference]: Start difference. First operand 69449 states and 104564 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 18:25:30,083 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 [] [2021-11-25 18:25:52,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:25:52,371 INFO L93 Difference]: Finished difference Result 139304 states and 209583 transitions. [2021-11-25 18:25:52,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:25:52,371 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 150 [2021-11-25 18:25:52,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:25:52,840 INFO L225 Difference]: With dead ends: 139304 [2021-11-25 18:25:52,840 INFO L226 Difference]: Without dead ends: 103930 [2021-11-25 18:25:53,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:25:53,007 INFO L933 BasicCegarLoop]: 7055 mSDtfsCounter, 3903 mSDsluCounter, 35150 mSDsCounter, 0 mSdLazyCounter, 4219 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3907 SdHoareTripleChecker+Valid, 38802 SdHoareTripleChecker+Invalid, 4220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4219 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:25:53,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3907 Valid, 38802 Invalid, 4220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4219 Invalid, 1 Unknown, 0 Unchecked, 20.9s Time] [2021-11-25 18:25:53,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103930 states. [2021-11-25 18:25:57,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103930 to 103619. [2021-11-25 18:25:57,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103619 states, 66051 states have (on average 1.3490181829192593) internal successors, (89104), 67672 states have internal predecessors, (89104), 32128 states have call successors, (32128), 5390 states have call predecessors, (32128), 5439 states have return successors, (34829), 31621 states have call predecessors, (34829), 32127 states have call successors, (34829) [2021-11-25 18:25:58,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103619 states to 103619 states and 156061 transitions. [2021-11-25 18:25:58,929 INFO L78 Accepts]: Start accepts. Automaton has 103619 states and 156061 transitions. Word has length 150 [2021-11-25 18:25:58,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:25:58,930 INFO L470 AbstractCegarLoop]: Abstraction has 103619 states and 156061 transitions. [2021-11-25 18:25:58,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 18:25:58,930 INFO L276 IsEmpty]: Start isEmpty. Operand 103619 states and 156061 transitions. [2021-11-25 18:25:58,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-25 18:25:58,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:25:58,940 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-25 18:25:58,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:25:59,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-25 18:25:59,153 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:25:59,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:25:59,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1467833467, now seen corresponding path program 1 times [2021-11-25 18:25:59,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:25:59,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253071619] [2021-11-25 18:25:59,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:25:59,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:25:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:25:59,430 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-25 18:25:59,430 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:25:59,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253071619] [2021-11-25 18:25:59,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253071619] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:25:59,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841911815] [2021-11-25 18:25:59,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:25:59,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:25:59,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:25:59,432 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:25:59,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1ac14c-e425-4720-8ff3-366a6a10b051/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 18:26:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:26:00,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 2928 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:26:00,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:26:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-25 18:26:01,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:26:01,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841911815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:26:01,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:26:01,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-11-25 18:26:01,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080935686] [2021-11-25 18:26:01,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:26:01,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:26:01,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:26:01,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:26:01,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:26:01,114 INFO L87 Difference]: Start difference. First operand 103619 states and 156061 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 18:26:03,140 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 []