./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--ath--wcn36xx--wcn36xx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--ath--wcn36xx--wcn36xx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS --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 eaaec3cc0f5537133af92fa7cbd54bc8d5ff0f4d0c87a0d3c9d98d3d6549f9cf --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:58:15,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:58:15,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:58:15,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:58:15,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:58:15,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:58:15,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:58:15,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:58:15,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:58:15,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:58:15,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:58:15,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:58:15,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:58:15,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:58:15,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:58:15,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:58:15,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:58:15,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:58:15,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:58:15,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:58:15,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:58:15,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:58:15,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:58:15,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:58:15,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:58:15,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:58:15,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:58:15,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:58:15,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:58:15,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:58:15,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:58:15,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:58:15,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:58:15,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:58:15,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:58:15,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:58:15,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:58:15,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:58:15,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:58:15,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:58:15,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:58:15,931 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:58:15,964 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:58:15,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:58:15,965 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:58:15,965 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:58:15,966 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:58:15,966 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:58:15,966 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:58:15,967 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:58:15,967 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:58:15,967 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:58:15,967 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:58:15,968 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:58:15,968 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:58:15,968 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:58:15,969 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:58:15,969 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:58:15,969 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:58:15,969 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:58:15,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:58:15,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:58:15,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:58:15,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:58:15,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:58:15,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:58:15,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:58:15,972 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:58:15,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:58:15,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:58:15,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:58:15,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:58:15,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:58:15,974 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:58:15,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:58:15,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:58:15,975 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:58:15,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:58:15,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:58:15,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:58:15,976 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eaaec3cc0f5537133af92fa7cbd54bc8d5ff0f4d0c87a0d3c9d98d3d6549f9cf [2022-11-19 06:58:16,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:58:16,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:58:16,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:58:16,335 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:58:16,337 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:58:16,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--ath--wcn36xx--wcn36xx.ko-entry_point.cil.out.i [2022-11-19 06:58:16,425 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/data/62ae29111/6b531b4fd74941928e8f8c8638e53164/FLAG18c2e5cb1 [2022-11-19 06:58:17,635 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:58:17,636 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--ath--wcn36xx--wcn36xx.ko-entry_point.cil.out.i [2022-11-19 06:58:17,698 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/data/62ae29111/6b531b4fd74941928e8f8c8638e53164/FLAG18c2e5cb1 [2022-11-19 06:58:17,854 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/data/62ae29111/6b531b4fd74941928e8f8c8638e53164 [2022-11-19 06:58:17,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:58:17,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:58:17,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:58:17,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:58:17,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:58:17,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:58:17" (1/1) ... [2022-11-19 06:58:17,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc397dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:17, skipping insertion in model container [2022-11-19 06:58:17,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:58:17" (1/1) ... [2022-11-19 06:58:17,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:58:18,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:58:19,592 WARN L234 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_aff956b0-9390-40f6-a233-571c6ee189b8/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--ath--wcn36xx--wcn36xx.ko-entry_point.cil.out.i[210460,210473] [2022-11-19 06:58:22,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:58:22,667 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:58:22,901 WARN L234 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_aff956b0-9390-40f6-a233-571c6ee189b8/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--ath--wcn36xx--wcn36xx.ko-entry_point.cil.out.i[210460,210473] [2022-11-19 06:58:23,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:58:23,522 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:58:23,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:23 WrapperNode [2022-11-19 06:58:23,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:58:23,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:58:23,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:58:23,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:58:23,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:23" (1/1) ... [2022-11-19 06:58:23,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:23" (1/1) ... [2022-11-19 06:58:24,209 INFO L138 Inliner]: procedures = 405, calls = 4105, calls flagged for inlining = 194, calls inlined = 168, statements flattened = 8543 [2022-11-19 06:58:24,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:58:24,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:58:24,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:58:24,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:58:24,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:23" (1/1) ... [2022-11-19 06:58:24,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:23" (1/1) ... [2022-11-19 06:58:24,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:23" (1/1) ... [2022-11-19 06:58:24,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:23" (1/1) ... [2022-11-19 06:58:24,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:23" (1/1) ... [2022-11-19 06:58:24,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:23" (1/1) ... [2022-11-19 06:58:24,731 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:23" (1/1) ... [2022-11-19 06:58:24,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:23" (1/1) ... [2022-11-19 06:58:24,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:58:24,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:58:24,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:58:24,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:58:24,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:23" (1/1) ... [2022-11-19 06:58:24,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:58:24,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:58:24,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:58:24,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:58:24,943 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_free_ctl_blks [2022-11-19 06:58:24,944 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_free_ctl_blks [2022-11-19 06:58:24,944 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_ch_alloc_skb [2022-11-19 06:58:24,944 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_ch_alloc_skb [2022-11-19 06:58:24,944 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_remove_interface [2022-11-19 06:58:24,944 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_remove_interface [2022-11-19 06:58:24,944 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_txskb [2022-11-19 06:58:24,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_txskb [2022-11-19 06:58:24,945 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-19 06:58:24,945 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-19 06:58:24,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 06:58:24,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 06:58:24,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-11-19 06:58:24,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-11-19 06:58:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-19 06:58:24,946 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-19 06:58:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure get_feat_caps [2022-11-19 06:58:24,946 INFO L138 BoogieDeclarations]: Found implementation of procedure get_feat_caps [2022-11-19 06:58:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_probe [2022-11-19 06:58:24,946 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_probe [2022-11-19 06:58:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_allocate_ctl_block [2022-11-19 06:58:24,947 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_allocate_ctl_block [2022-11-19 06:58:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure conf_is_ht40_plus [2022-11-19 06:58:24,947 INFO L138 BoogieDeclarations]: Found implementation of procedure conf_is_ht40_plus [2022-11-19 06:58:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 06:58:24,948 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 06:58:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_enable_ch_int [2022-11-19 06:58:24,948 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_enable_ch_int [2022-11-19 06:58:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_sta_remove [2022-11-19 06:58:24,948 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_sta_remove [2022-11-19 06:58:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_start [2022-11-19 06:58:24,949 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_start [2022-11-19 06:58:24,949 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 06:58:24,949 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 06:58:24,949 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 06:58:24,949 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_pmc_enter_bmps_state [2022-11-19 06:58:24,949 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_pmc_enter_bmps_state [2022-11-19 06:58:24,950 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_ch_free_skbs [2022-11-19 06:58:24,950 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_ch_free_skbs [2022-11-19 06:58:24,950 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_configure_filter [2022-11-19 06:58:24,950 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_configure_filter [2022-11-19 06:58:24,950 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_convert_sta_to_v1 [2022-11-19 06:58:24,950 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_convert_sta_to_v1 [2022-11-19 06:58:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-11-19 06:58:24,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 06:58:24,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 06:58:24,952 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 06:58:24,952 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 06:58:24,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:58:24,952 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_stop [2022-11-19 06:58:24,955 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_stop [2022-11-19 06:58:24,955 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-19 06:58:24,956 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-19 06:58:24,956 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-19 06:58:24,956 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-19 06:58:24,956 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 06:58:24,956 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 06:58:24,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 06:58:24,956 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-19 06:58:24,956 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-19 06:58:24,957 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 06:58:24,957 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 06:58:24,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 06:58:24,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:58:24,957 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 06:58:24,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 06:58:24,957 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2022-11-19 06:58:24,958 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2022-11-19 06:58:24,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 06:58:24,958 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 06:58:24,958 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_config_sta [2022-11-19 06:58:24,958 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_config_sta [2022-11-19 06:58:24,958 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2022-11-19 06:58:24,958 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2022-11-19 06:58:24,958 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-19 06:58:24,959 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-19 06:58:24,959 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_set_link_st [2022-11-19 06:58:24,959 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_set_link_st [2022-11-19 06:58:24,959 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2022-11-19 06:58:24,959 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2022-11-19 06:58:24,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2022-11-19 06:58:24,960 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~u32~0~X~~u32~0~TO~int [2022-11-19 06:58:24,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~u32~0~X~~u32~0~TO~int [2022-11-19 06:58:24,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:58:24,960 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-19 06:58:24,960 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-19 06:58:24,960 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-19 06:58:24,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-19 06:58:24,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:58:24,961 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2022-11-19 06:58:24,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2022-11-19 06:58:24,961 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_config [2022-11-19 06:58:24,961 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_config [2022-11-19 06:58:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:58:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 06:58:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_set_key [2022-11-19 06:58:24,962 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_set_key [2022-11-19 06:58:24,962 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 06:58:24,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 06:58:24,963 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 06:58:24,963 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 06:58:24,963 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_add_interface [2022-11-19 06:58:24,963 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_add_interface [2022-11-19 06:58:24,963 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_config_bss [2022-11-19 06:58:24,963 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_config_bss [2022-11-19 06:58:24,964 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_free_mem_pools [2022-11-19 06:58:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_free_mem_pools [2022-11-19 06:58:24,964 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource_byname [2022-11-19 06:58:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource_byname [2022-11-19 06:58:24,964 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_stop [2022-11-19 06:58:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_stop [2022-11-19 06:58:24,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:58:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:58:24,965 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 06:58:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 06:58:24,965 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_tx [2022-11-19 06:58:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_tx [2022-11-19 06:58:24,966 INFO L130 BoogieDeclarations]: Found specification of procedure buff_to_be [2022-11-19 06:58:24,966 INFO L138 BoogieDeclarations]: Found implementation of procedure buff_to_be [2022-11-19 06:58:24,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 06:58:24,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 06:58:24,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 06:58:24,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 06:58:24,967 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_set_power_params [2022-11-19 06:58:24,967 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_set_power_params [2022-11-19 06:58:24,967 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-19 06:58:24,967 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-19 06:58:24,967 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_sta_add [2022-11-19 06:58:24,968 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_sta_add [2022-11-19 06:58:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure get_vif_by_addr [2022-11-19 06:58:24,968 INFO L138 BoogieDeclarations]: Found implementation of procedure get_vif_by_addr [2022-11-19 06:58:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-19 06:58:24,968 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-19 06:58:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_tx_status_irqsafe [2022-11-19 06:58:24,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_tx_status_irqsafe [2022-11-19 06:58:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 06:58:24,969 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 06:58:24,969 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_is_data_qos [2022-11-19 06:58:24,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_is_data_qos [2022-11-19 06:58:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 06:58:24,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 06:58:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 06:58:24,970 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 06:58:24,970 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2022-11-19 06:58:24,970 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2022-11-19 06:58:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 06:58:24,971 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 06:58:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_set_stakey [2022-11-19 06:58:24,971 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_set_stakey [2022-11-19 06:58:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure get_sta_index [2022-11-19 06:58:24,971 INFO L138 BoogieDeclarations]: Found implementation of procedure get_sta_index [2022-11-19 06:58:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure write_file_dump [2022-11-19 06:58:24,972 INFO L138 BoogieDeclarations]: Found implementation of procedure write_file_dump [2022-11-19 06:58:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:58:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 06:58:24,972 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 06:58:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:58:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_rsp_status_check [2022-11-19 06:58:24,973 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_rsp_status_check [2022-11-19 06:58:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_delete_bss [2022-11-19 06:58:24,973 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_delete_bss [2022-11-19 06:58:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-19 06:58:24,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-19 06:58:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure conf_is_ht40_minus [2022-11-19 06:58:24,974 INFO L138 BoogieDeclarations]: Found implementation of procedure conf_is_ht40_minus [2022-11-19 06:58:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_bss_info_changed [2022-11-19 06:58:24,974 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_bss_info_changed [2022-11-19 06:58:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_remove [2022-11-19 06:58:24,974 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_remove [2022-11-19 06:58:24,974 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-19 06:58:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-19 06:58:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:58:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-19 06:58:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-19 06:58:24,975 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_fill_skb [2022-11-19 06:58:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_fill_skb [2022-11-19 06:58:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-19 06:58:24,976 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-19 06:58:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-19 06:58:24,976 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-19 06:58:24,976 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_sw_scan_complete [2022-11-19 06:58:24,976 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_sw_scan_complete [2022-11-19 06:58:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure is_cap_supported [2022-11-19 06:58:24,977 INFO L138 BoogieDeclarations]: Found implementation of procedure is_cap_supported [2022-11-19 06:58:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_update_allowed_rates [2022-11-19 06:58:24,977 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_update_allowed_rates [2022-11-19 06:58:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-19 06:58:24,977 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-19 06:58:24,977 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_is_fw_version [2022-11-19 06:58:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_is_fw_version [2022-11-19 06:58:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 06:58:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 06:58:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_read_register [2022-11-19 06:58:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_read_register [2022-11-19 06:58:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_pmc_exit_bmps_state [2022-11-19 06:58:24,979 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_pmc_exit_bmps_state [2022-11-19 06:58:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-19 06:58:24,979 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-19 06:58:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_sw_scan_start [2022-11-19 06:58:24,979 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_sw_scan_start [2022-11-19 06:58:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-19 06:58:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-19 06:58:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 06:58:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 06:58:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-11-19 06:58:24,980 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-11-19 06:58:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_close [2022-11-19 06:58:24,981 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_close [2022-11-19 06:58:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:58:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-19 06:58:24,981 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-19 06:58:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 06:58:24,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 06:58:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_resume [2022-11-19 06:58:24,982 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_resume [2022-11-19 06:58:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_set_rts_threshold [2022-11-19 06:58:24,982 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_set_rts_threshold [2022-11-19 06:58:24,982 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_set_sta_params [2022-11-19 06:58:24,982 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_set_sta_params [2022-11-19 06:58:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_ampdu_action [2022-11-19 06:58:24,983 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_ampdu_action [2022-11-19 06:58:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_init_descs [2022-11-19 06:58:24,983 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_init_descs [2022-11-19 06:58:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_stop_queues [2022-11-19 06:58:24,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_stop_queues [2022-11-19 06:58:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-19 06:58:24,984 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-19 06:58:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-19 06:58:24,984 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-19 06:58:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_write_register [2022-11-19 06:58:24,984 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_write_register [2022-11-19 06:58:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_set_tx_pdu [2022-11-19 06:58:24,985 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_set_tx_pdu [2022-11-19 06:58:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_suspend [2022-11-19 06:58:24,985 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_suspend [2022-11-19 06:58:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_add_ba_session [2022-11-19 06:58:25,030 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_add_ba_session [2022-11-19 06:58:25,030 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_smd_send_and_wait [2022-11-19 06:58:25,031 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_smd_send_and_wait [2022-11-19 06:58:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_init_tx_bd [2022-11-19 06:58:25,031 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_init_tx_bd [2022-11-19 06:58:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure wcn36xx_dxe_free_ctl_block [2022-11-19 06:58:25,031 INFO L138 BoogieDeclarations]: Found implementation of procedure wcn36xx_dxe_free_ctl_block [2022-11-19 06:58:25,031 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-19 06:58:25,031 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-19 06:58:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure simple_open [2022-11-19 06:58:25,032 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_open [2022-11-19 06:58:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure write_file_bool_bmps [2022-11-19 06:58:25,032 INFO L138 BoogieDeclarations]: Found implementation of procedure write_file_bool_bmps [2022-11-19 06:58:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2022-11-19 06:58:25,032 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2022-11-19 06:58:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:58:25,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2022-11-19 06:58:25,033 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2022-11-19 06:58:25,033 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2022-11-19 06:58:26,535 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:58:26,539 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:58:27,508 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 06:58:51,927 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:58:55,042 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:58:55,043 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 06:58:55,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:58:55 BoogieIcfgContainer [2022-11-19 06:58:55,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:58:55,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:58:55,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:58:55,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:58:55,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:58:17" (1/3) ... [2022-11-19 06:58:55,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4308484c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:58:55, skipping insertion in model container [2022-11-19 06:58:55,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:58:23" (2/3) ... [2022-11-19 06:58:55,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4308484c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:58:55, skipping insertion in model container [2022-11-19 06:58:55,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:58:55" (3/3) ... [2022-11-19 06:58:55,068 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--ath--wcn36xx--wcn36xx.ko-entry_point.cil.out.i [2022-11-19 06:58:55,098 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:58:55,098 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:58:55,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:58:55,263 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5288cf1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:58:55,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:58:55,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 2077 states, 1268 states have (on average 1.2941640378548895) internal successors, (1641), 1293 states have internal predecessors, (1641), 691 states have call successors, (691), 117 states have call predecessors, (691), 116 states have return successors, (685), 685 states have call predecessors, (685), 685 states have call successors, (685) [2022-11-19 06:58:55,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-19 06:58:55,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:55,307 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:58:55,308 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:58:55,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:55,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1305433128, now seen corresponding path program 1 times [2022-11-19 06:58:55,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:58:55,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096690140] [2022-11-19 06:58:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:55,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:58:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-19 06:58:56,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:58:56,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096690140] [2022-11-19 06:58:56,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096690140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:58:56,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:58:56,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:58:56,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708391647] [2022-11-19 06:58:56,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:58:56,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:58:56,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:58:56,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:58:56,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:58:56,736 INFO L87 Difference]: Start difference. First operand has 2077 states, 1268 states have (on average 1.2941640378548895) internal successors, (1641), 1293 states have internal predecessors, (1641), 691 states have call successors, (691), 117 states have call predecessors, (691), 116 states have return successors, (685), 685 states have call predecessors, (685), 685 states have call successors, (685) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-19 06:59:01,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:59:03,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:59:08,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:59:10,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:59:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:10,772 INFO L93 Difference]: Finished difference Result 6065 states and 8851 transitions. [2022-11-19 06:59:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:59:10,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 70 [2022-11-19 06:59:10,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:10,839 INFO L225 Difference]: With dead ends: 6065 [2022-11-19 06:59:10,840 INFO L226 Difference]: Without dead ends: 3989 [2022-11-19 06:59:10,861 INFO L412 NwaCegarLoop]: 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 [2022-11-19 06:59:10,864 INFO L413 NwaCegarLoop]: 3351 mSDtfsCounter, 2790 mSDsluCounter, 2701 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2796 SdHoareTripleChecker+Valid, 6052 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:59:10,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2796 Valid, 6052 Invalid, 620 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 608 Invalid, 3 Unknown, 0 Unchecked, 13.6s Time] [2022-11-19 06:59:10,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3989 states. [2022-11-19 06:59:11,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3989 to 3986. [2022-11-19 06:59:11,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3986 states, 2440 states have (on average 1.2877049180327869) internal successors, (3142), 2475 states have internal predecessors, (3142), 1316 states have call successors, (1316), 231 states have call predecessors, (1316), 229 states have return successors, (1317), 1313 states have call predecessors, (1317), 1315 states have call successors, (1317) [2022-11-19 06:59:11,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3986 states to 3986 states and 5775 transitions. [2022-11-19 06:59:11,394 INFO L78 Accepts]: Start accepts. Automaton has 3986 states and 5775 transitions. Word has length 70 [2022-11-19 06:59:11,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:11,396 INFO L495 AbstractCegarLoop]: Abstraction has 3986 states and 5775 transitions. [2022-11-19 06:59:11,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-19 06:59:11,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3986 states and 5775 transitions. [2022-11-19 06:59:11,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-19 06:59:11,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:11,408 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:59:11,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:59:11,408 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:59:11,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:11,409 INFO L85 PathProgramCache]: Analyzing trace with hash 804327930, now seen corresponding path program 1 times [2022-11-19 06:59:11,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:59:11,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348256218] [2022-11-19 06:59:11,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:11,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:59:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-19 06:59:12,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:59:12,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348256218] [2022-11-19 06:59:12,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348256218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:59:12,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:59:12,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:59:12,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492517553] [2022-11-19 06:59:12,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:59:12,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:59:12,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:59:12,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:59:12,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:59:12,324 INFO L87 Difference]: Start difference. First operand 3986 states and 5775 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-19 06:59:16,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:59:19,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:59:22,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:59:22,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:22,915 INFO L93 Difference]: Finished difference Result 8074 states and 11685 transitions. [2022-11-19 06:59:22,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:59:22,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 79 [2022-11-19 06:59:22,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:22,947 INFO L225 Difference]: With dead ends: 8074 [2022-11-19 06:59:22,947 INFO L226 Difference]: Without dead ends: 4109 [2022-11-19 06:59:22,970 INFO L412 NwaCegarLoop]: 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 [2022-11-19 06:59:22,975 INFO L413 NwaCegarLoop]: 2719 mSDtfsCounter, 2836 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2846 SdHoareTripleChecker+Valid, 2996 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:59:22,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2846 Valid, 2996 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 321 Invalid, 3 Unknown, 0 Unchecked, 10.1s Time] [2022-11-19 06:59:22,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2022-11-19 06:59:23,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 4101. [2022-11-19 06:59:23,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4101 states, 2511 states have (on average 1.2855436081242533) internal successors, (3228), 2547 states have internal predecessors, (3228), 1346 states have call successors, (1346), 244 states have call predecessors, (1346), 243 states have return successors, (1349), 1343 states have call predecessors, (1349), 1345 states have call successors, (1349) [2022-11-19 06:59:23,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 5923 transitions. [2022-11-19 06:59:23,250 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 5923 transitions. Word has length 79 [2022-11-19 06:59:23,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:23,253 INFO L495 AbstractCegarLoop]: Abstraction has 4101 states and 5923 transitions. [2022-11-19 06:59:23,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-19 06:59:23,254 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 5923 transitions. [2022-11-19 06:59:23,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-19 06:59:23,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:23,269 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 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] [2022-11-19 06:59:23,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:59:23,275 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:59:23,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:23,285 INFO L85 PathProgramCache]: Analyzing trace with hash 494789957, now seen corresponding path program 1 times [2022-11-19 06:59:23,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:59:23,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490364198] [2022-11-19 06:59:23,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:23,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:59:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:24,352 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2022-11-19 06:59:24,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:59:24,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490364198] [2022-11-19 06:59:24,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490364198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:59:24,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:59:24,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:59:24,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260244740] [2022-11-19 06:59:24,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:59:24,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:59:24,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:59:24,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:59:24,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:59:24,356 INFO L87 Difference]: Start difference. First operand 4101 states and 5923 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 06:59:30,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:59:33,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:59:35,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:59:37,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:59:39,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:59:42,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:59:44,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:59:45,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:45,122 INFO L93 Difference]: Finished difference Result 8170 states and 11852 transitions. [2022-11-19 06:59:45,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:59:45,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 129 [2022-11-19 06:59:45,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:45,191 INFO L225 Difference]: With dead ends: 8170 [2022-11-19 06:59:45,191 INFO L226 Difference]: Without dead ends: 8165 [2022-11-19 06:59:45,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:59:45,201 INFO L413 NwaCegarLoop]: 3382 mSDtfsCounter, 2942 mSDsluCounter, 6059 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2946 SdHoareTripleChecker+Valid, 9441 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:59:45,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2946 Valid, 9441 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 909 Invalid, 5 Unknown, 0 Unchecked, 20.4s Time] [2022-11-19 06:59:45,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8165 states. [2022-11-19 06:59:45,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8165 to 8157. [2022-11-19 06:59:45,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8157 states, 4994 states have (on average 1.2863436123348018) internal successors, (6424), 5065 states have internal predecessors, (6424), 2679 states have call successors, (2679), 485 states have call predecessors, (2679), 483 states have return successors, (2734), 2674 states have call predecessors, (2734), 2678 states have call successors, (2734) [2022-11-19 06:59:46,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8157 states to 8157 states and 11837 transitions. [2022-11-19 06:59:46,024 INFO L78 Accepts]: Start accepts. Automaton has 8157 states and 11837 transitions. Word has length 129 [2022-11-19 06:59:46,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:46,027 INFO L495 AbstractCegarLoop]: Abstraction has 8157 states and 11837 transitions. [2022-11-19 06:59:46,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 06:59:46,027 INFO L276 IsEmpty]: Start isEmpty. Operand 8157 states and 11837 transitions. [2022-11-19 06:59:46,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-19 06:59:46,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:46,069 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:59:46,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:59:46,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:59:46,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:46,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1364434131, now seen corresponding path program 1 times [2022-11-19 06:59:46,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:59:46,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403279129] [2022-11-19 06:59:46,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:46,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:59:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-11-19 06:59:46,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:59:46,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403279129] [2022-11-19 06:59:46,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403279129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:59:46,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:59:46,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:59:46,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642353365] [2022-11-19 06:59:46,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:59:46,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:59:46,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:59:46,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:59:46,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:59:46,561 INFO L87 Difference]: Start difference. First operand 8157 states and 11837 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-19 06:59:49,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:59:54,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:59:56,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:59:58,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:59:58,559 INFO L93 Difference]: Finished difference Result 15758 states and 22657 transitions. [2022-11-19 06:59:58,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:59:58,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 185 [2022-11-19 06:59:58,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:59:58,611 INFO L225 Difference]: With dead ends: 15758 [2022-11-19 06:59:58,611 INFO L226 Difference]: Without dead ends: 7622 [2022-11-19 06:59:58,656 INFO L412 NwaCegarLoop]: 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 [2022-11-19 06:59:58,657 INFO L413 NwaCegarLoop]: 2971 mSDtfsCounter, 1165 mSDsluCounter, 2531 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 5502 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:59:58,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1171 Valid, 5502 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 734 Invalid, 3 Unknown, 0 Unchecked, 11.7s Time] [2022-11-19 06:59:58,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7622 states. [2022-11-19 06:59:59,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7622 to 7615. [2022-11-19 06:59:59,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7615 states, 4667 states have (on average 1.2770516391686308) internal successors, (5960), 4741 states have internal predecessors, (5960), 2407 states have call successors, (2407), 539 states have call predecessors, (2407), 540 states have return successors, (2474), 2404 states have call predecessors, (2474), 2406 states have call successors, (2474) [2022-11-19 06:59:59,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7615 states to 7615 states and 10841 transitions. [2022-11-19 06:59:59,175 INFO L78 Accepts]: Start accepts. Automaton has 7615 states and 10841 transitions. Word has length 185 [2022-11-19 06:59:59,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:59:59,176 INFO L495 AbstractCegarLoop]: Abstraction has 7615 states and 10841 transitions. [2022-11-19 06:59:59,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-19 06:59:59,177 INFO L276 IsEmpty]: Start isEmpty. Operand 7615 states and 10841 transitions. [2022-11-19 06:59:59,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-19 06:59:59,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:59:59,196 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:59:59,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:59:59,197 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:59:59,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:59:59,197 INFO L85 PathProgramCache]: Analyzing trace with hash 12361053, now seen corresponding path program 2 times [2022-11-19 06:59:59,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:59:59,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161048510] [2022-11-19 06:59:59,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:59:59,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:59:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:59:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2022-11-19 06:59:59,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:59:59,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161048510] [2022-11-19 06:59:59,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161048510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:59:59,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:59:59,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:59:59,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220290828] [2022-11-19 06:59:59,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:59:59,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:59:59,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:59:59,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:59:59,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:59:59,673 INFO L87 Difference]: Start difference. First operand 7615 states and 10841 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-19 07:00:02,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:00:08,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:00:10,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:00:11,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:11,990 INFO L93 Difference]: Finished difference Result 17283 states and 24733 transitions. [2022-11-19 07:00:11,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:11,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 185 [2022-11-19 07:00:11,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:12,049 INFO L225 Difference]: With dead ends: 17283 [2022-11-19 07:00:12,050 INFO L226 Difference]: Without dead ends: 11280 [2022-11-19 07:00:12,081 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:00:12,082 INFO L413 NwaCegarLoop]: 3981 mSDtfsCounter, 2600 mSDsluCounter, 2522 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 73 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2610 SdHoareTripleChecker+Valid, 6503 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:12,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2610 Valid, 6503 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 879 Invalid, 3 Unknown, 0 Unchecked, 11.9s Time] [2022-11-19 07:00:12,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11280 states. [2022-11-19 07:00:12,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11280 to 11267. [2022-11-19 07:00:12,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11267 states, 6923 states have (on average 1.2725696952188357) internal successors, (8810), 7035 states have internal predecessors, (8810), 3573 states have call successors, (3573), 771 states have call predecessors, (3573), 770 states have return successors, (3663), 3564 states have call predecessors, (3663), 3572 states have call successors, (3663) [2022-11-19 07:00:12,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11267 states to 11267 states and 16046 transitions. [2022-11-19 07:00:12,748 INFO L78 Accepts]: Start accepts. Automaton has 11267 states and 16046 transitions. Word has length 185 [2022-11-19 07:00:12,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:12,749 INFO L495 AbstractCegarLoop]: Abstraction has 11267 states and 16046 transitions. [2022-11-19 07:00:12,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-19 07:00:12,750 INFO L276 IsEmpty]: Start isEmpty. Operand 11267 states and 16046 transitions. [2022-11-19 07:00:12,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-19 07:00:12,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:12,773 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:12,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:00:12,773 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:00:12,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:12,774 INFO L85 PathProgramCache]: Analyzing trace with hash 954100061, now seen corresponding path program 1 times [2022-11-19 07:00:12,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:12,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651406490] [2022-11-19 07:00:12,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:12,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:13,208 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2022-11-19 07:00:13,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:13,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651406490] [2022-11-19 07:00:13,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651406490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:13,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:13,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:00:13,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697419737] [2022-11-19 07:00:13,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:13,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:00:13,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:13,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:00:13,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:00:13,211 INFO L87 Difference]: Start difference. First operand 11267 states and 16046 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-19 07:00:16,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:00:20,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:00:22,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:00:24,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:00:24,553 INFO L93 Difference]: Finished difference Result 16115 states and 22974 transitions. [2022-11-19 07:00:24,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:00:24,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) Word has length 185 [2022-11-19 07:00:24,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:00:24,599 INFO L225 Difference]: With dead ends: 16115 [2022-11-19 07:00:24,599 INFO L226 Difference]: Without dead ends: 11275 [2022-11-19 07:00:24,623 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:00:24,624 INFO L413 NwaCegarLoop]: 2690 mSDtfsCounter, 4 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5374 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:00:24,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5374 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 596 Invalid, 3 Unknown, 0 Unchecked, 11.0s Time] [2022-11-19 07:00:24,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11275 states. [2022-11-19 07:00:25,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11275 to 11275. [2022-11-19 07:00:25,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11275 states, 6929 states have (on average 1.272333670082263) internal successors, (8816), 7043 states have internal predecessors, (8816), 3573 states have call successors, (3573), 771 states have call predecessors, (3573), 772 states have return successors, (3665), 3564 states have call predecessors, (3665), 3572 states have call successors, (3665) [2022-11-19 07:00:25,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11275 states to 11275 states and 16054 transitions. [2022-11-19 07:00:25,343 INFO L78 Accepts]: Start accepts. Automaton has 11275 states and 16054 transitions. Word has length 185 [2022-11-19 07:00:25,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:00:25,344 INFO L495 AbstractCegarLoop]: Abstraction has 11275 states and 16054 transitions. [2022-11-19 07:00:25,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-19 07:00:25,344 INFO L276 IsEmpty]: Start isEmpty. Operand 11275 states and 16054 transitions. [2022-11-19 07:00:25,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-19 07:00:25,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:00:25,367 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:00:25,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:00:25,368 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:00:25,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:00:25,368 INFO L85 PathProgramCache]: Analyzing trace with hash -998981644, now seen corresponding path program 1 times [2022-11-19 07:00:25,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:00:25,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155019738] [2022-11-19 07:00:25,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:00:25,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:00:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:00:26,886 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2022-11-19 07:00:26,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:00:26,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155019738] [2022-11-19 07:00:26,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155019738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:00:26,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:00:26,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-19 07:00:26,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608763337] [2022-11-19 07:00:26,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:00:26,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:00:26,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:00:26,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:00:26,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:00:26,888 INFO L87 Difference]: Start difference. First operand 11275 states and 16054 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-19 07:00:31,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:00:54,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:00:58,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:01:07,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:01:09,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:01:11,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:01:13,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:01:15,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:01:17,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:01:19,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:19,189 INFO L93 Difference]: Finished difference Result 21965 states and 31369 transitions. [2022-11-19 07:01:19,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 07:01:19,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) Word has length 186 [2022-11-19 07:01:19,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:19,248 INFO L225 Difference]: With dead ends: 21965 [2022-11-19 07:01:19,248 INFO L226 Difference]: Without dead ends: 12302 [2022-11-19 07:01:19,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:01:19,278 INFO L413 NwaCegarLoop]: 1073 mSDtfsCounter, 6373 mSDsluCounter, 2653 mSDsCounter, 0 mSdLazyCounter, 12460 mSolverCounterSat, 4441 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7122 SdHoareTripleChecker+Valid, 3726 SdHoareTripleChecker+Invalid, 16909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4441 IncrementalHoareTripleChecker+Valid, 12460 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:19,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7122 Valid, 3726 Invalid, 16909 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4441 Valid, 12460 Invalid, 8 Unknown, 0 Unchecked, 51.2s Time] [2022-11-19 07:01:19,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12302 states. [2022-11-19 07:01:19,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12302 to 12244. [2022-11-19 07:01:19,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12244 states, 7492 states have (on average 1.2676187933796048) internal successors, (9497), 7626 states have internal predecessors, (9497), 3906 states have call successors, (3906), 819 states have call predecessors, (3906), 845 states have return successors, (4058), 3913 states have call predecessors, (4058), 3905 states have call successors, (4058) [2022-11-19 07:01:20,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12244 states to 12244 states and 17461 transitions. [2022-11-19 07:01:20,029 INFO L78 Accepts]: Start accepts. Automaton has 12244 states and 17461 transitions. Word has length 186 [2022-11-19 07:01:20,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:20,030 INFO L495 AbstractCegarLoop]: Abstraction has 12244 states and 17461 transitions. [2022-11-19 07:01:20,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 4 states have call successors, (26), 4 states have call predecessors, (26), 2 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-19 07:01:20,030 INFO L276 IsEmpty]: Start isEmpty. Operand 12244 states and 17461 transitions. [2022-11-19 07:01:20,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-19 07:01:20,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:20,058 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:20,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:01:20,058 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:20,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:20,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1575347709, now seen corresponding path program 1 times [2022-11-19 07:01:20,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:20,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660171649] [2022-11-19 07:01:20,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:20,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:01:27,767 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2022-11-19 07:01:27,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:01:27,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660171649] [2022-11-19 07:01:27,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660171649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:01:27,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:01:27,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:01:27,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529529506] [2022-11-19 07:01:27,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:01:27,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:01:27,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:01:27,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:01:27,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:01:27,770 INFO L87 Difference]: Start difference. First operand 12244 states and 17461 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-19 07:01:30,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:01:33,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:01:37,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:01:40,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:01:41,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:01:42,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:01:42,718 INFO L93 Difference]: Finished difference Result 18957 states and 27085 transitions. [2022-11-19 07:01:42,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:01:42,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) Word has length 192 [2022-11-19 07:01:42,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:01:42,774 INFO L225 Difference]: With dead ends: 18957 [2022-11-19 07:01:42,775 INFO L226 Difference]: Without dead ends: 12340 [2022-11-19 07:01:42,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:01:42,803 INFO L413 NwaCegarLoop]: 2692 mSDtfsCounter, 7 mSDsluCounter, 5375 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 8067 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:01:42,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 8067 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 902 Invalid, 3 Unknown, 0 Unchecked, 14.5s Time] [2022-11-19 07:01:42,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12340 states. [2022-11-19 07:01:43,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12340 to 12268. [2022-11-19 07:01:43,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12268 states, 7516 states have (on average 1.2667642362959022) internal successors, (9521), 7650 states have internal predecessors, (9521), 3906 states have call successors, (3906), 819 states have call predecessors, (3906), 845 states have return successors, (4058), 3913 states have call predecessors, (4058), 3905 states have call successors, (4058) [2022-11-19 07:01:43,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12268 states to 12268 states and 17485 transitions. [2022-11-19 07:01:43,758 INFO L78 Accepts]: Start accepts. Automaton has 12268 states and 17485 transitions. Word has length 192 [2022-11-19 07:01:43,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:01:43,759 INFO L495 AbstractCegarLoop]: Abstraction has 12268 states and 17485 transitions. [2022-11-19 07:01:43,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-19 07:01:43,759 INFO L276 IsEmpty]: Start isEmpty. Operand 12268 states and 17485 transitions. [2022-11-19 07:01:43,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-19 07:01:43,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:01:43,796 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:01:43,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:01:43,796 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:01:43,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:01:43,797 INFO L85 PathProgramCache]: Analyzing trace with hash -275468671, now seen corresponding path program 1 times [2022-11-19 07:01:43,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:01:43,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725870214] [2022-11-19 07:01:43,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:01:43,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:01:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2022-11-19 07:02:03,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:02:03,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725870214] [2022-11-19 07:02:03,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725870214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:02:03,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:02:03,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:02:03,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506310348] [2022-11-19 07:02:03,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:02:03,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:02:03,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:02:03,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:02:03,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:02:03,904 INFO L87 Difference]: Start difference. First operand 12268 states and 17485 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-19 07:02:08,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:02:17,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:02:19,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:02:21,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:02:34,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:02:36,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:02:41,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:02:42,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:02:42,721 INFO L93 Difference]: Finished difference Result 18392 states and 26248 transitions. [2022-11-19 07:02:42,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:02:42,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 220 [2022-11-19 07:02:42,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:02:42,817 INFO L225 Difference]: With dead ends: 18392 [2022-11-19 07:02:42,817 INFO L226 Difference]: Without dead ends: 18387 [2022-11-19 07:02:42,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:02:42,833 INFO L413 NwaCegarLoop]: 1077 mSDtfsCounter, 4512 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 8149 mSolverCounterSat, 2630 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5159 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 10785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2630 IncrementalHoareTripleChecker+Valid, 8149 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:42,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5159 Valid, 3239 Invalid, 10785 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2630 Valid, 8149 Invalid, 6 Unknown, 0 Unchecked, 37.8s Time] [2022-11-19 07:02:42,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18387 states. [2022-11-19 07:02:44,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18387 to 18246. [2022-11-19 07:02:44,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18246 states, 11177 states have (on average 1.267513644090543) internal successors, (14167), 11375 states have internal predecessors, (14167), 5794 states have call successors, (5794), 1240 states have call predecessors, (5794), 1274 states have return successors, (6076), 5800 states have call predecessors, (6076), 5793 states have call successors, (6076) [2022-11-19 07:02:44,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18246 states to 18246 states and 26037 transitions. [2022-11-19 07:02:44,220 INFO L78 Accepts]: Start accepts. Automaton has 18246 states and 26037 transitions. Word has length 220 [2022-11-19 07:02:44,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:02:44,221 INFO L495 AbstractCegarLoop]: Abstraction has 18246 states and 26037 transitions. [2022-11-19 07:02:44,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-19 07:02:44,221 INFO L276 IsEmpty]: Start isEmpty. Operand 18246 states and 26037 transitions. [2022-11-19 07:02:44,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-19 07:02:44,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:02:44,273 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:02:44,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:02:44,274 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:02:44,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:02:44,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1574404664, now seen corresponding path program 1 times [2022-11-19 07:02:44,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:02:44,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549335704] [2022-11-19 07:02:44,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:44,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:02:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2022-11-19 07:03:05,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:05,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549335704] [2022-11-19 07:03:05,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549335704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:05,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:03:05,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:03:05,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164152564] [2022-11-19 07:03:05,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:05,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:03:05,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:05,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:03:05,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:03:05,696 INFO L87 Difference]: Start difference. First operand 18246 states and 26037 transitions. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 4 states have call successors, (36), 4 states have call predecessors, (36), 3 states have return successors, (35), 5 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-19 07:03:10,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:03:23,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:03:25,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:03:27,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:03:30,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:03:32,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:03:34,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:03:39,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:03:41,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:03:43,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:03:45,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:03:48,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:03:50,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:03:52,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:02,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:04,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:07,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:09,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:11,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:13,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:14,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:14,624 INFO L93 Difference]: Finished difference Result 28880 states and 41266 transitions. [2022-11-19 07:04:14,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:04:14,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 4 states have call successors, (36), 4 states have call predecessors, (36), 3 states have return successors, (35), 5 states have call predecessors, (35), 3 states have call successors, (35) Word has length 277 [2022-11-19 07:04:14,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:14,696 INFO L225 Difference]: With dead ends: 28880 [2022-11-19 07:04:14,697 INFO L226 Difference]: Without dead ends: 18015 [2022-11-19 07:04:14,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:04:14,734 INFO L413 NwaCegarLoop]: 1131 mSDtfsCounter, 5106 mSDsluCounter, 2877 mSDsCounter, 0 mSdLazyCounter, 12443 mSolverCounterSat, 3049 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5849 SdHoareTripleChecker+Valid, 4008 SdHoareTripleChecker+Invalid, 15505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3049 IncrementalHoareTripleChecker+Valid, 12443 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:14,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5849 Valid, 4008 Invalid, 15505 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3049 Valid, 12443 Invalid, 13 Unknown, 0 Unchecked, 67.8s Time] [2022-11-19 07:04:14,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18015 states. [2022-11-19 07:04:15,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18015 to 17963. [2022-11-19 07:04:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17963 states, 11026 states have (on average 1.268365681117359) internal successors, (13985), 11218 states have internal predecessors, (13985), 5696 states have call successors, (5696), 1206 states have call predecessors, (5696), 1240 states have return successors, (5952), 5705 states have call predecessors, (5952), 5695 states have call successors, (5952) [2022-11-19 07:04:15,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17963 states to 17963 states and 25633 transitions. [2022-11-19 07:04:15,741 INFO L78 Accepts]: Start accepts. Automaton has 17963 states and 25633 transitions. Word has length 277 [2022-11-19 07:04:15,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:15,742 INFO L495 AbstractCegarLoop]: Abstraction has 17963 states and 25633 transitions. [2022-11-19 07:04:15,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 4 states have call successors, (36), 4 states have call predecessors, (36), 3 states have return successors, (35), 5 states have call predecessors, (35), 3 states have call successors, (35) [2022-11-19 07:04:15,743 INFO L276 IsEmpty]: Start isEmpty. Operand 17963 states and 25633 transitions. [2022-11-19 07:04:15,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2022-11-19 07:04:15,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:15,814 INFO L195 NwaCegarLoop]: trace histogram [18, 16, 16, 16, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:04:15,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:04:15,815 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:15,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:15,815 INFO L85 PathProgramCache]: Analyzing trace with hash -662217867, now seen corresponding path program 1 times [2022-11-19 07:04:15,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:15,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314689693] [2022-11-19 07:04:15,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:15,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:17,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2022-11-19 07:04:17,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:17,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314689693] [2022-11-19 07:04:17,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314689693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:17,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:17,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:04:17,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041119527] [2022-11-19 07:04:17,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:17,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:04:17,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:17,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:04:17,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:04:17,209 INFO L87 Difference]: Start difference. First operand 17963 states and 25633 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-11-19 07:04:21,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:27,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:29,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:31,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:31,362 INFO L93 Difference]: Finished difference Result 36037 states and 51595 transitions. [2022-11-19 07:04:31,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:04:31,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) Word has length 557 [2022-11-19 07:04:31,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:31,412 INFO L225 Difference]: With dead ends: 36037 [2022-11-19 07:04:31,412 INFO L226 Difference]: Without dead ends: 18095 [2022-11-19 07:04:31,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:04:31,453 INFO L413 NwaCegarLoop]: 2695 mSDtfsCounter, 9 mSDsluCounter, 5366 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 8061 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:31,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 8061 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 916 Invalid, 3 Unknown, 0 Unchecked, 13.4s Time] [2022-11-19 07:04:31,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18095 states. [2022-11-19 07:04:32,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18095 to 17987. [2022-11-19 07:04:32,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17987 states, 11050 states have (on average 1.2677828054298643) internal successors, (14009), 11242 states have internal predecessors, (14009), 5696 states have call successors, (5696), 1206 states have call predecessors, (5696), 1240 states have return successors, (5952), 5705 states have call predecessors, (5952), 5695 states have call successors, (5952) [2022-11-19 07:04:32,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17987 states to 17987 states and 25657 transitions. [2022-11-19 07:04:32,511 INFO L78 Accepts]: Start accepts. Automaton has 17987 states and 25657 transitions. Word has length 557 [2022-11-19 07:04:32,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:32,512 INFO L495 AbstractCegarLoop]: Abstraction has 17987 states and 25657 transitions. [2022-11-19 07:04:32,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 2 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-11-19 07:04:32,512 INFO L276 IsEmpty]: Start isEmpty. Operand 17987 states and 25657 transitions. [2022-11-19 07:04:32,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2022-11-19 07:04:32,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:32,577 INFO L195 NwaCegarLoop]: trace histogram [18, 16, 16, 16, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:04:32,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:04:32,577 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:32,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:32,578 INFO L85 PathProgramCache]: Analyzing trace with hash 616982723, now seen corresponding path program 1 times [2022-11-19 07:04:32,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:32,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910699989] [2022-11-19 07:04:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:32,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1185 trivial. 0 not checked. [2022-11-19 07:04:33,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:33,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910699989] [2022-11-19 07:04:33,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910699989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:33,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:33,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:04:33,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791235479] [2022-11-19 07:04:33,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:33,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:04:33,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:33,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:04:33,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:04:33,860 INFO L87 Difference]: Start difference. First operand 17987 states and 25657 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 4 states have internal predecessors, (196), 2 states have call successors, (87), 2 states have call predecessors, (87), 3 states have return successors, (86), 3 states have call predecessors, (86), 2 states have call successors, (86) [2022-11-19 07:04:36,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:39,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:45,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:49,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:50,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:53,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:53,164 INFO L93 Difference]: Finished difference Result 36001 states and 51553 transitions. [2022-11-19 07:04:53,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:04:53,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 4 states have internal predecessors, (196), 2 states have call successors, (87), 2 states have call predecessors, (87), 3 states have return successors, (86), 3 states have call predecessors, (86), 2 states have call successors, (86) Word has length 572 [2022-11-19 07:04:53,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:53,224 INFO L225 Difference]: With dead ends: 36001 [2022-11-19 07:04:53,224 INFO L226 Difference]: Without dead ends: 18035 [2022-11-19 07:04:53,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:04:53,278 INFO L413 NwaCegarLoop]: 2690 mSDtfsCounter, 1 mSDsluCounter, 8046 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 10736 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:53,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 10736 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1210 Invalid, 3 Unknown, 0 Unchecked, 18.5s Time] [2022-11-19 07:04:53,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18035 states. [2022-11-19 07:04:54,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18035 to 18035. [2022-11-19 07:04:54,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18035 states, 11086 states have (on average 1.2669132238859824) internal successors, (14045), 11278 states have internal predecessors, (14045), 5696 states have call successors, (5696), 1206 states have call predecessors, (5696), 1252 states have return successors, (6000), 5717 states have call predecessors, (6000), 5695 states have call successors, (6000) [2022-11-19 07:04:54,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18035 states to 18035 states and 25741 transitions. [2022-11-19 07:04:54,286 INFO L78 Accepts]: Start accepts. Automaton has 18035 states and 25741 transitions. Word has length 572 [2022-11-19 07:04:54,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:54,287 INFO L495 AbstractCegarLoop]: Abstraction has 18035 states and 25741 transitions. [2022-11-19 07:04:54,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 4 states have internal predecessors, (196), 2 states have call successors, (87), 2 states have call predecessors, (87), 3 states have return successors, (86), 3 states have call predecessors, (86), 2 states have call successors, (86) [2022-11-19 07:04:54,288 INFO L276 IsEmpty]: Start isEmpty. Operand 18035 states and 25741 transitions. [2022-11-19 07:04:54,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2022-11-19 07:04:54,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:54,352 INFO L195 NwaCegarLoop]: trace histogram [18, 16, 16, 16, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:04:54,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 07:04:54,352 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:54,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:54,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1587178285, now seen corresponding path program 1 times [2022-11-19 07:04:54,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:54,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152390690] [2022-11-19 07:04:54,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:54,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2022-11-19 07:04:56,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:56,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152390690] [2022-11-19 07:04:56,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152390690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:56,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:56,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:04:56,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584687698] [2022-11-19 07:04:56,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:56,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:04:56,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:04:56,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:04:56,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:04:56,391 INFO L87 Difference]: Start difference. First operand 18035 states and 25741 transitions. Second operand has 5 states, 5 states have (on average 40.2) internal successors, (201), 4 states have internal predecessors, (201), 2 states have call successors, (86), 2 states have call predecessors, (86), 3 states have return successors, (85), 3 states have call predecessors, (85), 2 states have call successors, (85) [2022-11-19 07:05:00,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:04,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:08,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:12,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:14,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:15,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:15,319 INFO L93 Difference]: Finished difference Result 36133 states and 51960 transitions. [2022-11-19 07:05:15,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:05:15,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 4 states have internal predecessors, (201), 2 states have call successors, (86), 2 states have call predecessors, (86), 3 states have return successors, (85), 3 states have call predecessors, (85), 2 states have call successors, (85) Word has length 574 [2022-11-19 07:05:15,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:15,383 INFO L225 Difference]: With dead ends: 36133 [2022-11-19 07:05:15,383 INFO L226 Difference]: Without dead ends: 18119 [2022-11-19 07:05:15,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:05:15,438 INFO L413 NwaCegarLoop]: 2689 mSDtfsCounter, 2 mSDsluCounter, 8040 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10729 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:15,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10729 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1221 Invalid, 3 Unknown, 0 Unchecked, 18.3s Time] [2022-11-19 07:05:15,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18119 states. [2022-11-19 07:05:16,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18119 to 18083. [2022-11-19 07:05:16,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18083 states, 11122 states have (on average 1.2660492717137206) internal successors, (14081), 11314 states have internal predecessors, (14081), 5696 states have call successors, (5696), 1206 states have call predecessors, (5696), 1264 states have return successors, (6139), 5729 states have call predecessors, (6139), 5695 states have call successors, (6139) [2022-11-19 07:05:16,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18083 states to 18083 states and 25916 transitions. [2022-11-19 07:05:16,218 INFO L78 Accepts]: Start accepts. Automaton has 18083 states and 25916 transitions. Word has length 574 [2022-11-19 07:05:16,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:16,219 INFO L495 AbstractCegarLoop]: Abstraction has 18083 states and 25916 transitions. [2022-11-19 07:05:16,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 4 states have internal predecessors, (201), 2 states have call successors, (86), 2 states have call predecessors, (86), 3 states have return successors, (85), 3 states have call predecessors, (85), 2 states have call successors, (85) [2022-11-19 07:05:16,219 INFO L276 IsEmpty]: Start isEmpty. Operand 18083 states and 25916 transitions. [2022-11-19 07:05:16,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2022-11-19 07:05:16,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:16,264 INFO L195 NwaCegarLoop]: trace histogram [18, 16, 16, 15, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:05:16,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 07:05:16,265 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:05:16,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:16,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2028252776, now seen corresponding path program 1 times [2022-11-19 07:05:16,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:05:16,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782690691] [2022-11-19 07:05:16,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:16,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:05:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:18,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 1176 trivial. 0 not checked. [2022-11-19 07:05:18,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:05:18,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782690691] [2022-11-19 07:05:18,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782690691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:05:18,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:05:18,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-19 07:05:18,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414109747] [2022-11-19 07:05:18,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:05:18,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:05:18,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:05:18,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:05:18,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:05:18,261 INFO L87 Difference]: Start difference. First operand 18083 states and 25916 transitions. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 7 states have internal predecessors, (203), 3 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (88), 5 states have call predecessors, (88), 3 states have call successors, (88) [2022-11-19 07:05:22,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:26,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:27,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:30,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:32,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:40,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:44,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:47,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:50,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:50,892 INFO L93 Difference]: Finished difference Result 36301 states and 52276 transitions. [2022-11-19 07:05:50,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:05:50,893 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 7 states have internal predecessors, (203), 3 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (88), 5 states have call predecessors, (88), 3 states have call successors, (88) Word has length 588 [2022-11-19 07:05:50,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:50,967 INFO L225 Difference]: With dead ends: 36301 [2022-11-19 07:05:50,967 INFO L226 Difference]: Without dead ends: 18239 [2022-11-19 07:05:51,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:05:51,053 INFO L413 NwaCegarLoop]: 2721 mSDtfsCounter, 14 mSDsluCounter, 18978 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 21699 SdHoareTripleChecker+Invalid, 2489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:51,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 21699 Invalid, 2489 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2484 Invalid, 4 Unknown, 0 Unchecked, 31.8s Time] [2022-11-19 07:05:51,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18239 states. [2022-11-19 07:05:51,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18239 to 18131. [2022-11-19 07:05:51,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18131 states, 11158 states have (on average 1.2637569456891915) internal successors, (14101), 11350 states have internal predecessors, (14101), 5696 states have call successors, (5696), 1206 states have call predecessors, (5696), 1276 states have return successors, (6151), 5741 states have call predecessors, (6151), 5695 states have call successors, (6151) [2022-11-19 07:05:51,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18131 states to 18131 states and 25948 transitions. [2022-11-19 07:05:51,984 INFO L78 Accepts]: Start accepts. Automaton has 18131 states and 25948 transitions. Word has length 588 [2022-11-19 07:05:51,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:51,985 INFO L495 AbstractCegarLoop]: Abstraction has 18131 states and 25948 transitions. [2022-11-19 07:05:51,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 7 states have internal predecessors, (203), 3 states have call successors, (89), 2 states have call predecessors, (89), 4 states have return successors, (88), 5 states have call predecessors, (88), 3 states have call successors, (88) [2022-11-19 07:05:51,985 INFO L276 IsEmpty]: Start isEmpty. Operand 18131 states and 25948 transitions. [2022-11-19 07:05:52,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2022-11-19 07:05:52,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:52,031 INFO L195 NwaCegarLoop]: trace histogram [18, 16, 16, 15, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:05:52,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 07:05:52,031 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:05:52,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:52,032 INFO L85 PathProgramCache]: Analyzing trace with hash 775879273, now seen corresponding path program 1 times [2022-11-19 07:05:52,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:05:52,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847164413] [2022-11-19 07:05:52,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:52,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:05:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:54,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1227 trivial. 0 not checked. [2022-11-19 07:05:54,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:05:54,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847164413] [2022-11-19 07:05:54,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847164413] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:05:54,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095034063] [2022-11-19 07:05:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:54,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:54,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:05:54,366 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:05:54,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:05:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:58,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 9007 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:05:58,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:05:58,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 1131 trivial. 0 not checked. [2022-11-19 07:05:58,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:05:58,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095034063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:05:58,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:05:58,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-19 07:05:58,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155380925] [2022-11-19 07:05:58,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:05:58,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:05:58,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:05:58,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:05:58,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:05:58,844 INFO L87 Difference]: Start difference. First operand 18131 states and 25948 transitions. Second operand has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 2 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-19 07:06:01,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:03,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:09,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:11,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:14,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:17,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:18,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:20,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:23,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:23,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:23,734 INFO L93 Difference]: Finished difference Result 36373 states and 52206 transitions. [2022-11-19 07:06:23,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:06:23,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 2 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 594 [2022-11-19 07:06:23,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:23,779 INFO L225 Difference]: With dead ends: 36373 [2022-11-19 07:06:23,779 INFO L226 Difference]: Without dead ends: 18263 [2022-11-19 07:06:23,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 592 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:06:23,814 INFO L413 NwaCegarLoop]: 2690 mSDtfsCounter, 14 mSDsluCounter, 8056 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 10746 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:23,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 10746 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1220 Invalid, 4 Unknown, 0 Unchecked, 24.0s Time] [2022-11-19 07:06:23,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18263 states. [2022-11-19 07:06:24,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18263 to 18167. [2022-11-19 07:06:24,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18167 states, 11194 states have (on average 1.2629087010898696) internal successors, (14137), 11386 states have internal predecessors, (14137), 5696 states have call successors, (5696), 1206 states have call predecessors, (5696), 1276 states have return successors, (6151), 5741 states have call predecessors, (6151), 5695 states have call successors, (6151) [2022-11-19 07:06:24,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18167 states to 18167 states and 25984 transitions. [2022-11-19 07:06:24,596 INFO L78 Accepts]: Start accepts. Automaton has 18167 states and 25984 transitions. Word has length 594 [2022-11-19 07:06:24,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:24,596 INFO L495 AbstractCegarLoop]: Abstraction has 18167 states and 25984 transitions. [2022-11-19 07:06:24,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 2 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-19 07:06:24,596 INFO L276 IsEmpty]: Start isEmpty. Operand 18167 states and 25984 transitions. [2022-11-19 07:06:24,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2022-11-19 07:06:24,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:24,630 INFO L195 NwaCegarLoop]: trace histogram [18, 16, 16, 15, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:24,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 07:06:24,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-19 07:06:24,831 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:24,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:24,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1872083497, now seen corresponding path program 1 times [2022-11-19 07:06:24,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:06:24,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776263661] [2022-11-19 07:06:24,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:24,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:06:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:26,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1233 trivial. 0 not checked. [2022-11-19 07:06:26,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:06:26,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776263661] [2022-11-19 07:06:26,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776263661] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:06:26,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731666296] [2022-11-19 07:06:26,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:26,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:06:26,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:06:26,750 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:06:26,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:06:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:30,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 9247 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:06:30,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:31,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 1043 trivial. 0 not checked. [2022-11-19 07:06:31,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:31,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731666296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:31,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:06:31,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-19 07:06:31,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605235945] [2022-11-19 07:06:31,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:31,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:06:31,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:06:31,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:06:31,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:06:31,010 INFO L87 Difference]: Start difference. First operand 18167 states and 25984 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2022-11-19 07:06:34,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:36,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:41,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:46,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:47,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:47,647 INFO L93 Difference]: Finished difference Result 37589 states and 54147 transitions. [2022-11-19 07:06:47,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:06:47,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) Word has length 611 [2022-11-19 07:06:47,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:47,708 INFO L225 Difference]: With dead ends: 37589 [2022-11-19 07:06:47,708 INFO L226 Difference]: Without dead ends: 19443 [2022-11-19 07:06:47,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 610 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:06:47,746 INFO L413 NwaCegarLoop]: 2814 mSDtfsCounter, 57 mSDsluCounter, 5508 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 8322 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:47,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 8322 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 926 Invalid, 3 Unknown, 0 Unchecked, 15.8s Time] [2022-11-19 07:06:47,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19443 states. [2022-11-19 07:06:48,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19443 to 18203. [2022-11-19 07:06:48,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18203 states, 11218 states have (on average 1.2623462292743806) internal successors, (14161), 11410 states have internal predecessors, (14161), 5708 states have call successors, (5708), 1206 states have call predecessors, (5708), 1276 states have return successors, (6163), 5753 states have call predecessors, (6163), 5707 states have call successors, (6163) [2022-11-19 07:06:48,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18203 states to 18203 states and 26032 transitions. [2022-11-19 07:06:48,440 INFO L78 Accepts]: Start accepts. Automaton has 18203 states and 26032 transitions. Word has length 611 [2022-11-19 07:06:48,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:48,440 INFO L495 AbstractCegarLoop]: Abstraction has 18203 states and 26032 transitions. [2022-11-19 07:06:48,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2022-11-19 07:06:48,441 INFO L276 IsEmpty]: Start isEmpty. Operand 18203 states and 26032 transitions. [2022-11-19 07:06:48,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2022-11-19 07:06:48,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:48,474 INFO L195 NwaCegarLoop]: trace histogram [18, 16, 16, 15, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:48,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 07:06:48,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-19 07:06:48,679 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:48,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:48,680 INFO L85 PathProgramCache]: Analyzing trace with hash -760058969, now seen corresponding path program 1 times [2022-11-19 07:06:48,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:06:48,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101919232] [2022-11-19 07:06:48,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:48,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:06:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:50,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1274 trivial. 0 not checked. [2022-11-19 07:06:50,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:06:50,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101919232] [2022-11-19 07:06:50,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101919232] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:06:50,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116987099] [2022-11-19 07:06:50,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:50,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:06:50,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:06:50,647 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:06:50,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:06:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:55,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 9604 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:06:55,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 1114 trivial. 0 not checked. [2022-11-19 07:06:55,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:55,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116987099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:55,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:06:55,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-19 07:06:55,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493768429] [2022-11-19 07:06:55,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:55,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:06:55,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:06:55,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:06:55,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:06:55,124 INFO L87 Difference]: Start difference. First operand 18203 states and 26032 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 3 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2022-11-19 07:06:57,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:59,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:07:04,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:07:09,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:07:09,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:09,732 INFO L93 Difference]: Finished difference Result 37661 states and 54243 transitions. [2022-11-19 07:07:09,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:07:09,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 3 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) Word has length 650 [2022-11-19 07:07:09,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:09,782 INFO L225 Difference]: With dead ends: 37661 [2022-11-19 07:07:09,782 INFO L226 Difference]: Without dead ends: 19479 [2022-11-19 07:07:09,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 649 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:07:09,818 INFO L413 NwaCegarLoop]: 2818 mSDtfsCounter, 54 mSDsluCounter, 5515 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 8333 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:09,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 8333 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 922 Invalid, 3 Unknown, 0 Unchecked, 13.8s Time] [2022-11-19 07:07:09,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19479 states. [2022-11-19 07:07:10,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19479 to 18239. [2022-11-19 07:07:10,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18239 states, 11242 states have (on average 1.261786159046433) internal successors, (14185), 11434 states have internal predecessors, (14185), 5720 states have call successors, (5720), 1206 states have call predecessors, (5720), 1276 states have return successors, (6175), 5765 states have call predecessors, (6175), 5719 states have call successors, (6175) [2022-11-19 07:07:10,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18239 states to 18239 states and 26080 transitions. [2022-11-19 07:07:10,542 INFO L78 Accepts]: Start accepts. Automaton has 18239 states and 26080 transitions. Word has length 650 [2022-11-19 07:07:10,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:10,543 INFO L495 AbstractCegarLoop]: Abstraction has 18239 states and 26080 transitions. [2022-11-19 07:07:10,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 3 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2022-11-19 07:07:10,543 INFO L276 IsEmpty]: Start isEmpty. Operand 18239 states and 26080 transitions. [2022-11-19 07:07:10,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2022-11-19 07:07:10,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:10,576 INFO L195 NwaCegarLoop]: trace histogram [18, 16, 16, 15, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:10,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:07:10,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-19 07:07:10,783 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:10,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:10,783 INFO L85 PathProgramCache]: Analyzing trace with hash 950898976, now seen corresponding path program 1 times [2022-11-19 07:07:10,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:10,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040830757] [2022-11-19 07:07:10,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:10,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:12,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1274 trivial. 0 not checked. [2022-11-19 07:07:12,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:12,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040830757] [2022-11-19 07:07:12,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040830757] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:07:12,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737820799] [2022-11-19 07:07:12,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:12,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:07:12,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:07:12,562 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:07:12,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:07:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:17,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 9639 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:07:17,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:07:17,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 1114 trivial. 0 not checked. [2022-11-19 07:07:17,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:07:17,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737820799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:17,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:07:17,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-19 07:07:17,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346219178] [2022-11-19 07:07:17,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:17,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:07:17,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:17,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:07:17,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:07:17,135 INFO L87 Difference]: Start difference. First operand 18239 states and 26080 transitions. Second operand has 5 states, 5 states have (on average 46.6) internal successors, (233), 5 states have internal predecessors, (233), 3 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2022-11-19 07:07:20,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:07:22,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:07:30,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:07:34,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:07:35,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:35,072 INFO L93 Difference]: Finished difference Result 36673 states and 52614 transitions. [2022-11-19 07:07:35,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:07:35,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.6) internal successors, (233), 5 states have internal predecessors, (233), 3 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) Word has length 652 [2022-11-19 07:07:35,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:35,120 INFO L225 Difference]: With dead ends: 36673 [2022-11-19 07:07:35,120 INFO L226 Difference]: Without dead ends: 18455 [2022-11-19 07:07:35,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 650 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:07:35,158 INFO L413 NwaCegarLoop]: 2712 mSDtfsCounter, 18 mSDsluCounter, 8083 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 15 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 10795 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:35,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 10795 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1218 Invalid, 3 Unknown, 0 Unchecked, 17.1s Time] [2022-11-19 07:07:35,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18455 states. [2022-11-19 07:07:35,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18455 to 18251. [2022-11-19 07:07:35,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18251 states, 11254 states have (on average 1.2615070197263196) internal successors, (14197), 11446 states have internal predecessors, (14197), 5720 states have call successors, (5720), 1206 states have call predecessors, (5720), 1276 states have return successors, (6175), 5765 states have call predecessors, (6175), 5719 states have call successors, (6175) [2022-11-19 07:07:35,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18251 states to 18251 states and 26092 transitions. [2022-11-19 07:07:35,831 INFO L78 Accepts]: Start accepts. Automaton has 18251 states and 26092 transitions. Word has length 652 [2022-11-19 07:07:35,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:35,832 INFO L495 AbstractCegarLoop]: Abstraction has 18251 states and 26092 transitions. [2022-11-19 07:07:35,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.6) internal successors, (233), 5 states have internal predecessors, (233), 3 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2022-11-19 07:07:35,832 INFO L276 IsEmpty]: Start isEmpty. Operand 18251 states and 26092 transitions. [2022-11-19 07:07:35,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2022-11-19 07:07:35,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:35,887 INFO L195 NwaCegarLoop]: trace histogram [18, 16, 16, 15, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:35,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:07:36,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:07:36,095 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:36,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:36,096 INFO L85 PathProgramCache]: Analyzing trace with hash -397411051, now seen corresponding path program 1 times [2022-11-19 07:07:36,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:36,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535779425] [2022-11-19 07:07:36,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:36,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2022-11-19 07:07:38,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:38,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535779425] [2022-11-19 07:07:38,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535779425] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:07:38,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971009460] [2022-11-19 07:07:38,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:38,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:07:38,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:07:38,159 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:07:38,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:07:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:42,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 9880 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:07:42,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:07:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 306 proven. 0 refuted. 0 times theorem prover too weak. 1005 trivial. 0 not checked. [2022-11-19 07:07:43,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:07:43,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971009460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:43,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:07:43,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2022-11-19 07:07:43,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955814707] [2022-11-19 07:07:43,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:43,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:07:43,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:43,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:07:43,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:07:43,828 INFO L87 Difference]: Start difference. First operand 18251 states and 26092 transitions. Second operand has 6 states, 6 states have (on average 39.0) internal successors, (234), 5 states have internal predecessors, (234), 3 states have call successors, (103), 3 states have call predecessors, (103), 3 states have return successors, (102), 3 states have call predecessors, (102), 2 states have call successors, (102) [2022-11-19 07:07:48,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:07:51,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:08:01,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:08:03,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:08:07,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:08:10,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:08:21,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:21,245 INFO L93 Difference]: Finished difference Result 51003 states and 73036 transitions. [2022-11-19 07:08:21,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:08:21,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 39.0) internal successors, (234), 5 states have internal predecessors, (234), 3 states have call successors, (103), 3 states have call predecessors, (103), 3 states have return successors, (102), 3 states have call predecessors, (102), 2 states have call successors, (102) Word has length 669 [2022-11-19 07:08:21,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:21,417 INFO L225 Difference]: With dead ends: 51003 [2022-11-19 07:08:21,417 INFO L226 Difference]: Without dead ends: 50998 [2022-11-19 07:08:21,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:08:21,439 INFO L413 NwaCegarLoop]: 7009 mSDtfsCounter, 5225 mSDsluCounter, 8879 mSDsCounter, 0 mSdLazyCounter, 8968 mSolverCounterSat, 569 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5245 SdHoareTripleChecker+Valid, 15888 SdHoareTripleChecker+Invalid, 9540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 8968 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:21,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5245 Valid, 15888 Invalid, 9540 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [569 Valid, 8968 Invalid, 3 Unknown, 0 Unchecked, 35.2s Time] [2022-11-19 07:08:21,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50998 states. [2022-11-19 07:08:23,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50998 to 50902. [2022-11-19 07:08:23,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50902 states, 31349 states have (on average 1.2624964113687838) internal successors, (39578), 31913 states have internal predecessors, (39578), 16020 states have call successors, (16020), 3345 states have call predecessors, (16020), 3532 states have return successors, (17317), 16115 states have call predecessors, (17317), 16019 states have call successors, (17317) [2022-11-19 07:08:23,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50902 states to 50902 states and 72915 transitions. [2022-11-19 07:08:23,940 INFO L78 Accepts]: Start accepts. Automaton has 50902 states and 72915 transitions. Word has length 669 [2022-11-19 07:08:23,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:23,941 INFO L495 AbstractCegarLoop]: Abstraction has 50902 states and 72915 transitions. [2022-11-19 07:08:23,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.0) internal successors, (234), 5 states have internal predecessors, (234), 3 states have call successors, (103), 3 states have call predecessors, (103), 3 states have return successors, (102), 3 states have call predecessors, (102), 2 states have call successors, (102) [2022-11-19 07:08:23,941 INFO L276 IsEmpty]: Start isEmpty. Operand 50902 states and 72915 transitions. [2022-11-19 07:08:24,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2022-11-19 07:08:24,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:24,027 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:24,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-19 07:08:24,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:24,228 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:08:24,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:24,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1083393755, now seen corresponding path program 1 times [2022-11-19 07:08:24,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:24,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161889321] [2022-11-19 07:08:24,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:24,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:29,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1455 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 1432 trivial. 0 not checked. [2022-11-19 07:08:29,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:29,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161889321] [2022-11-19 07:08:29,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161889321] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:08:29,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764446763] [2022-11-19 07:08:29,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:29,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:08:29,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:08:29,383 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:08:29,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aff956b0-9390-40f6-a233-571c6ee189b8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:08:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:34,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 9977 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:08:34,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:08:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1455 backedges. 387 proven. 93 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2022-11-19 07:08:37,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:08:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1455 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1432 trivial. 0 not checked. [2022-11-19 07:08:39,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764446763] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:08:39,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1979588494] [2022-11-19 07:08:39,451 INFO L159 IcfgInterpreter]: Started Sifa with 367 locations of interest [2022-11-19 07:08:39,452 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:08:39,457 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:08:39,463 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:08:39,463 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:08:53,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:53,165 INFO L217 Elim1Store]: Index analysis took 143 ms [2022-11-19 07:08:53,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 32 select indices, 32 select index equivalence classes, 528 disjoint index pairs (out of 496 index pairs), introduced 32 new quantified variables, introduced 0 case distinctions, treesize of input 969 treesize of output 868 [2022-11-19 07:08:54,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:54,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:55,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:55,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:55,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2022-11-19 07:08:55,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:55,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:55,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 66 [2022-11-19 07:08:55,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:55,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:56,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:56,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:56,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:56,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-19 07:08:56,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:56,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:56,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 48 [2022-11-19 07:08:56,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2022-11-19 07:08:59,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:59,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:08:59,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:09:04,879 INFO L217 Elim1Store]: Index analysis took 6934 ms