./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_7a4b637f-86be-4206-863c-b490286c0706/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4b637f-86be-4206-863c-b490286c0706/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4b637f-86be-4206-863c-b490286c0706/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4b637f-86be-4206-863c-b490286c0706/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4b637f-86be-4206-863c-b490286c0706/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4b637f-86be-4206-863c-b490286c0706/bin/utaipan-7li7fVZpFI --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 f0e55ca795fc0b7479008c7c7ace6ad96366c87862ace8719a39598b92db6b60 --- 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-5e519f3 [2022-11-03 02:37:45,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:37:45,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:37:45,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:37:45,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:37:45,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:37:45,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:37:45,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:37:45,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:37:45,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:37:45,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:37:45,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:37:45,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:37:45,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:37:45,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:37:45,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:37:45,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:37:45,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:37:45,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:37:45,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:37:45,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:37:45,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:37:45,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:37:45,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:37:45,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:37:45,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:37:45,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:37:45,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:37:45,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:37:45,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:37:45,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:37:45,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:37:45,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:37:45,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:37:45,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:37:45,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:37:45,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:37:45,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:37:45,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:37:46,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:37:46,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:37:46,002 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4b637f-86be-4206-863c-b490286c0706/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:37:46,023 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:37:46,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:37:46,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:37:46,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:37:46,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:37:46,025 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:37:46,025 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:37:46,026 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:37:46,026 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:37:46,027 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:37:46,027 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:37:46,027 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:37:46,028 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:37:46,028 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:37:46,028 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:37:46,029 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:37:46,029 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:37:46,029 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:37:46,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:37:46,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:37:46,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:37:46,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:37:46,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:37:46,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:37:46,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:37:46,032 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:37:46,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:37:46,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:37:46,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:37:46,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:37:46,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:37:46,033 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:37:46,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:37:46,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:37:46,034 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:37:46,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:37:46,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:37:46,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:37:46,035 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_7a4b637f-86be-4206-863c-b490286c0706/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4b637f-86be-4206-863c-b490286c0706/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0e55ca795fc0b7479008c7c7ace6ad96366c87862ace8719a39598b92db6b60 [2022-11-03 02:37:46,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:37:46,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:37:46,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:37:46,351 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:37:46,352 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:37:46,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4b637f-86be-4206-863c-b490286c0706/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i [2022-11-03 02:37:46,439 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4b637f-86be-4206-863c-b490286c0706/bin/utaipan-7li7fVZpFI/data/47ecb3169/85b45afb30b747328c9695382eb1ddfb/FLAG21c87d8a9 [2022-11-03 02:37:47,365 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:37:47,367 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4b637f-86be-4206-863c-b490286c0706/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i [2022-11-03 02:37:47,430 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4b637f-86be-4206-863c-b490286c0706/bin/utaipan-7li7fVZpFI/data/47ecb3169/85b45afb30b747328c9695382eb1ddfb/FLAG21c87d8a9 [2022-11-03 02:37:47,790 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4b637f-86be-4206-863c-b490286c0706/bin/utaipan-7li7fVZpFI/data/47ecb3169/85b45afb30b747328c9695382eb1ddfb [2022-11-03 02:37:47,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:37:47,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:37:47,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:37:47,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:37:47,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:37:47,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:37:47" (1/1) ... [2022-11-03 02:37:47,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7532e522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:47, skipping insertion in model container [2022-11-03 02:37:47,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:37:47" (1/1) ... [2022-11-03 02:37:47,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:37:47,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:37:51,070 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4b637f-86be-4206-863c-b490286c0706/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i[373305,373318] [2022-11-03 02:37:51,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:37:51,192 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:37:51,826 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4b637f-86be-4206-863c-b490286c0706/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i[373305,373318] [2022-11-03 02:37:51,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:37:52,016 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:37:52,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:52 WrapperNode [2022-11-03 02:37:52,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:37:52,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:37:52,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:37:52,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:37:52,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:52" (1/1) ... [2022-11-03 02:37:52,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:52" (1/1) ... [2022-11-03 02:37:52,429 INFO L138 Inliner]: procedures = 451, calls = 3513, calls flagged for inlining = 214, calls inlined = 200, statements flattened = 8893 [2022-11-03 02:37:52,430 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:37:52,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:37:52,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:37:52,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:37:52,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:52" (1/1) ... [2022-11-03 02:37:52,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:52" (1/1) ... [2022-11-03 02:37:52,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:52" (1/1) ... [2022-11-03 02:37:52,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:52" (1/1) ... [2022-11-03 02:37:52,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:52" (1/1) ... [2022-11-03 02:37:52,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:52" (1/1) ... [2022-11-03 02:37:52,771 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:52" (1/1) ... [2022-11-03 02:37:52,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:52" (1/1) ... [2022-11-03 02:37:52,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:37:52,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:37:52,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:37:52,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:37:52,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:52" (1/1) ... [2022-11-03 02:37:52,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:37:52,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4b637f-86be-4206-863c-b490286c0706/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:52,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4b637f-86be-4206-863c-b490286c0706/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:37:52,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a4b637f-86be-4206-863c-b490286c0706/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:37:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_hw_get_capacity [2022-11-03 02:37:52,941 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_hw_get_capacity [2022-11-03 02:37:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:37:52,942 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:37:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_hw_ioctl [2022-11-03 02:37:52,942 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_hw_ioctl [2022-11-03 02:37:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure __first_node [2022-11-03 02:37:52,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __first_node [2022-11-03 02:37:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 02:37:52,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 02:37:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:37:52,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:37:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-11-03 02:37:52,944 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-11-03 02:37:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_stop_hw_queues [2022-11-03 02:37:52,944 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_stop_hw_queues [2022-11-03 02:37:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:37:52,944 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:37:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 02:37:52,946 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 02:37:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:37:52,946 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:37:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_deinit_port [2022-11-03 02:37:52,946 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_deinit_port [2022-11-03 02:37:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_exec_internal_command [2022-11-03 02:37:52,947 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_exec_internal_command [2022-11-03 02:37:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:37:52,947 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:37:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_read_log_page [2022-11-03 02:37:52,947 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_read_log_page [2022-11-03 02:37:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:37:52,948 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:37:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-03 02:37:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:37:52,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:37:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:37:52,949 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:37:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 02:37:52,950 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 02:37:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:37:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure ata_swap_string [2022-11-03 02:37:52,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ata_swap_string [2022-11-03 02:37:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-03 02:37:52,950 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-03 02:37:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure __cpu_to_node [2022-11-03 02:37:52,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __cpu_to_node [2022-11-03 02:37:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_bit [2022-11-03 02:37:52,952 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_bit [2022-11-03 02:37:52,952 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-03 02:37:52,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-03 02:37:52,953 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2022-11-03 02:37:52,954 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2022-11-03 02:37:52,954 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:37:52,954 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:37:52,954 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2022-11-03 02:37:52,954 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2022-11-03 02:37:52,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:37:52,955 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_free_tag_set [2022-11-03 02:37:52,955 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_free_tag_set [2022-11-03 02:37:52,956 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_hw_exit [2022-11-03 02:37:52,956 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_hw_exit [2022-11-03 02:37:52,956 INFO L130 BoogieDeclarations]: Found specification of procedure get_least_used_cpu_on_node [2022-11-03 02:37:52,956 INFO L138 BoogieDeclarations]: Found implementation of procedure get_least_used_cpu_on_node [2022-11-03 02:37:52,956 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:37:52,957 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:37:52,957 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:37:52,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:37:52,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:37:52,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:37:52,957 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:37:52,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:37:52,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:37:52,958 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:37:52,958 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_first [2022-11-03 02:37:52,958 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_first [2022-11-03 02:37:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbfx [2022-11-03 02:37:52,959 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbfx [2022-11-03 02:37:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_get_next_rr_node [2022-11-03 02:37:52,959 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_get_next_rr_node [2022-11-03 02:37:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure hba_setup [2022-11-03 02:37:52,959 INFO L138 BoogieDeclarations]: Found implementation of procedure hba_setup [2022-11-03 02:37:52,960 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_enable_fis [2022-11-03 02:37:52,960 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_enable_fis [2022-11-03 02:37:52,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 02:37:52,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 02:37:52,961 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2022-11-03 02:37:52,961 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2022-11-03 02:37:52,961 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2022-11-03 02:37:52,962 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2022-11-03 02:37:52,962 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 02:37:52,963 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 02:37:52,963 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2022-11-03 02:37:52,964 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2022-11-03 02:37:52,964 INFO L130 BoogieDeclarations]: Found specification of procedure pcim_iounmap_regions [2022-11-03 02:37:52,964 INFO L138 BoogieDeclarations]: Found implementation of procedure pcim_iounmap_regions [2022-11-03 02:37:52,964 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc_node [2022-11-03 02:37:52,964 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc_node [2022-11-03 02:37:52,965 INFO L130 BoogieDeclarations]: Found specification of procedure __pcibus_to_node [2022-11-03 02:37:52,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __pcibus_to_node [2022-11-03 02:37:52,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:37:52,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:37:52,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:37:52,966 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_start_port [2022-11-03 02:37:52,966 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_start_port [2022-11-03 02:37:52,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:37:52,966 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:37:52,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:37:52,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:37:52,967 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2022-11-03 02:37:52,968 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2022-11-03 02:37:52,968 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:37:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_hw_debugfs_exit [2022-11-03 02:37:52,971 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_hw_debugfs_exit [2022-11-03 02:37:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-03 02:37:52,971 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-03 02:37:52,972 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 02:37:52,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 02:37:52,974 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:37:52,974 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:37:52,974 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-03 02:37:52,980 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-03 02:37:53,046 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-03 02:37:53,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-03 02:37:53,047 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 02:37:53,047 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 02:37:53,047 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:37:53,047 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:37:53,047 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf5 [2022-11-03 02:37:53,047 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf5 [2022-11-03 02:37:53,047 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf6 [2022-11-03 02:37:53,047 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf6 [2022-11-03 02:37:53,047 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf7 [2022-11-03 02:37:53,047 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf7 [2022-11-03 02:37:53,047 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_rq_from_tag [2022-11-03 02:37:53,048 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_rq_from_tag [2022-11-03 02:37:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf1 [2022-11-03 02:37:53,048 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf1 [2022-11-03 02:37:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf2 [2022-11-03 02:37:53,048 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf2 [2022-11-03 02:37:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf3 [2022-11-03 02:37:53,048 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf3 [2022-11-03 02:37:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf4 [2022-11-03 02:37:53,048 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf4 [2022-11-03 02:37:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf0 [2022-11-03 02:37:53,048 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf0 [2022-11-03 02:37:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:37:53,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:37:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:37:53,049 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:37:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_put_int_command [2022-11-03 02:37:53,049 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_put_int_command [2022-11-03 02:37:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 02:37:53,049 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 02:37:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_hba_reset [2022-11-03 02:37:53,049 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_hba_reset [2022-11-03 02:37:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:37:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:37:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure bdput [2022-11-03 02:37:53,050 INFO L138 BoogieDeclarations]: Found implementation of procedure bdput [2022-11-03 02:37:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:37:53,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:37:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure dmam_alloc_coherent [2022-11-03 02:37:53,050 INFO L138 BoogieDeclarations]: Found implementation of procedure dmam_alloc_coherent [2022-11-03 02:37:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_standby_immediate [2022-11-03 02:37:53,050 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_standby_immediate [2022-11-03 02:37:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-03 02:37:53,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-03 02:37:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_get [2022-11-03 02:37:53,050 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_get [2022-11-03 02:37:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-03 02:37:53,051 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-03 02:37:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-03 02:37:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-03 02:37:53,051 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-03 02:37:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-03 02:37:53,051 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-03 02:37:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure del_gendisk [2022-11-03 02:37:53,051 INFO L138 BoogieDeclarations]: Found implementation of procedure del_gendisk [2022-11-03 02:37:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:37:53,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:37:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-03 02:37:53,051 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-03 02:37:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_sectors [2022-11-03 02:37:53,052 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_sectors [2022-11-03 02:37:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 02:37:53,052 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 02:37:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure drop_cpu [2022-11-03 02:37:53,052 INFO L138 BoogieDeclarations]: Found implementation of procedure drop_cpu [2022-11-03 02:37:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:37:53,052 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:37:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_disable_link_opts [2022-11-03 02:37:53,052 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_disable_link_opts [2022-11-03 02:37:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:37:53,052 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:37:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2022-11-03 02:37:53,053 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2022-11-03 02:37:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_cmd_from_tag [2022-11-03 02:37:53,053 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_cmd_from_tag [2022-11-03 02:37:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_pos [2022-11-03 02:37:53,053 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_pos [2022-11-03 02:37:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:37:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:37:53,053 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:37:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-03 02:37:53,053 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-03 02:37:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_rq_to_pdu [2022-11-03 02:37:53,054 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_rq_to_pdu [2022-11-03 02:37:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:37:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_7 [2022-11-03 02:37:53,054 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_7 [2022-11-03 02:37:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-03 02:37:53,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-03 02:37:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure exec_drive_taskfile [2022-11-03 02:37:53,056 INFO L138 BoogieDeclarations]: Found implementation of procedure exec_drive_taskfile [2022-11-03 02:37:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:37:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_init_port [2022-11-03 02:37:53,056 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_init_port [2022-11-03 02:37:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 02:37:53,061 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 02:37:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure ida_remove [2022-11-03 02:37:53,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ida_remove [2022-11-03 02:37:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_restart_port [2022-11-03 02:37:53,062 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_restart_port [2022-11-03 02:37:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 02:37:53,062 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 02:37:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-03 02:37:53,062 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-03 02:37:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 02:37:53,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 02:37:53,063 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_start_stopped_hw_queues [2022-11-03 02:37:53,063 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_start_stopped_hw_queues [2022-11-03 02:37:53,063 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2022-11-03 02:37:53,063 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2022-11-03 02:37:53,063 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-11-03 02:37:53,063 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-11-03 02:37:53,063 INFO L130 BoogieDeclarations]: Found specification of procedure dmam_free_coherent [2022-11-03 02:37:53,064 INFO L138 BoogieDeclarations]: Found implementation of procedure dmam_free_coherent [2022-11-03 02:37:53,064 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_pci_remove [2022-11-03 02:37:53,064 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_pci_remove [2022-11-03 02:37:53,064 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_issue_ncq_command [2022-11-03 02:37:53,064 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_issue_ncq_command [2022-11-03 02:37:53,064 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_of_node [2022-11-03 02:37:53,064 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_of_node [2022-11-03 02:37:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:37:53,065 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:37:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_get_identify [2022-11-03 02:37:53,065 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_get_identify [2022-11-03 02:37:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:37:53,065 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:37:53,065 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-11-03 02:37:53,066 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-11-03 02:37:53,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:37:53,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:37:53,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:37:53,066 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_set_timeout [2022-11-03 02:37:53,066 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_set_timeout [2022-11-03 02:37:53,066 INFO L130 BoogieDeclarations]: Found specification of procedure irq_set_affinity_hint [2022-11-03 02:37:53,067 INFO L138 BoogieDeclarations]: Found implementation of procedure irq_set_affinity_hint [2022-11-03 02:37:53,067 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_pci_resume [2022-11-03 02:37:53,067 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_pci_resume [2022-11-03 02:37:53,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:37:53,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:37:53,067 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 02:37:53,067 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 02:37:53,067 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2022-11-03 02:37:53,068 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2022-11-03 02:37:53,068 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_put [2022-11-03 02:37:53,068 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_put [2022-11-03 02:37:53,068 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_pci_shutdown [2022-11-03 02:37:53,068 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_pci_shutdown [2022-11-03 02:37:53,068 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 02:37:53,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 02:37:53,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_9 [2022-11-03 02:37:53,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_9 [2022-11-03 02:37:53,069 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_device_reset [2022-11-03 02:37:53,069 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_device_reset [2022-11-03 02:37:53,069 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_enable_engine [2022-11-03 02:37:53,069 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_enable_engine [2022-11-03 02:37:53,069 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_7 [2022-11-03 02:37:53,070 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_7 [2022-11-03 02:37:53,070 INFO L130 BoogieDeclarations]: Found specification of procedure pcim_enable_device [2022-11-03 02:37:53,070 INFO L138 BoogieDeclarations]: Found implementation of procedure pcim_enable_device [2022-11-03 02:37:53,070 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 02:37:53,070 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 02:37:53,070 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_check_surprise_removal [2022-11-03 02:37:53,070 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_check_surprise_removal [2022-11-03 02:37:53,071 INFO L130 BoogieDeclarations]: Found specification of procedure devm_free_irq [2022-11-03 02:37:53,071 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_free_irq [2022-11-03 02:37:53,071 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 02:37:53,071 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 02:37:53,071 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_end_request [2022-11-03 02:37:53,071 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_end_request [2022-11-03 02:37:53,071 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-11-03 02:37:53,071 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-11-03 02:37:53,072 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:37:53,072 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:37:53,072 INFO L130 BoogieDeclarations]: Found specification of procedure no_llseek [2022-11-03 02:37:53,072 INFO L138 BoogieDeclarations]: Found implementation of procedure no_llseek [2022-11-03 02:37:53,072 INFO L130 BoogieDeclarations]: Found specification of procedure simple_open [2022-11-03 02:37:53,072 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_open [2022-11-03 02:37:53,072 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-03 02:37:53,073 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-03 02:37:53,073 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 02:37:53,073 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 02:37:53,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:37:53,073 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_dma_free [2022-11-03 02:37:53,073 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_dma_free [2022-11-03 02:37:53,073 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_block_initialize [2022-11-03 02:37:53,073 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_block_initialize [2022-11-03 02:37:54,191 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:37:54,195 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:37:54,720 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:38:12,969 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:38:15,600 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:38:15,601 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:38:15,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:38:15 BoogieIcfgContainer [2022-11-03 02:38:15,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:38:15,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:38:15,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:38:15,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:38:15,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:37:47" (1/3) ... [2022-11-03 02:38:15,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17881593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:38:15, skipping insertion in model container [2022-11-03 02:38:15,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:52" (2/3) ... [2022-11-03 02:38:15,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17881593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:38:15, skipping insertion in model container [2022-11-03 02:38:15,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:38:15" (3/3) ... [2022-11-03 02:38:15,624 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i [2022-11-03 02:38:15,643 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:38:15,643 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:38:15,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:38:15,940 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;@12ee94e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:38:15,941 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:38:15,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 2327 states, 1438 states have (on average 1.3414464534075103) internal successors, (1929), 1488 states have internal predecessors, (1929), 744 states have call successors, (744), 145 states have call predecessors, (744), 144 states have return successors, (727), 727 states have call predecessors, (727), 727 states have call successors, (727) [2022-11-03 02:38:16,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-11-03 02:38:16,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:16,008 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:16,008 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:16,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:16,016 INFO L85 PathProgramCache]: Analyzing trace with hash 596536012, now seen corresponding path program 1 times [2022-11-03 02:38:16,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:16,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315158152] [2022-11-03 02:38:16,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:16,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:17,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2817 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2817 trivial. 0 not checked. [2022-11-03 02:38:17,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:17,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315158152] [2022-11-03 02:38:17,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315158152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:17,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:17,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:38:17,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552433109] [2022-11-03 02:38:17,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:17,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:17,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:17,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:17,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:17,742 INFO L87 Difference]: Start difference. First operand has 2327 states, 1438 states have (on average 1.3414464534075103) internal successors, (1929), 1488 states have internal predecessors, (1929), 744 states have call successors, (744), 145 states have call predecessors, (744), 144 states have return successors, (727), 727 states have call predecessors, (727), 727 states have call successors, (727) Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2022-11-03 02:38:19,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:22,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:25,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:28,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:32,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:35,286 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 [] [2022-11-03 02:38:35,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:35,686 INFO L93 Difference]: Finished difference Result 6428 states and 9435 transitions. [2022-11-03 02:38:35,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:38:35,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 409 [2022-11-03 02:38:35,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:35,754 INFO L225 Difference]: With dead ends: 6428 [2022-11-03 02:38:35,754 INFO L226 Difference]: Without dead ends: 4121 [2022-11-03 02:38:35,771 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 [2022-11-03 02:38:35,774 INFO L413 NwaCegarLoop]: 3666 mSDtfsCounter, 2659 mSDsluCounter, 3372 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2672 SdHoareTripleChecker+Valid, 6739 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:35,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2672 Valid, 6739 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 627 Invalid, 6 Unknown, 0 Unchecked, 17.5s Time] [2022-11-03 02:38:35,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4121 states. [2022-11-03 02:38:36,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4121 to 4112. [2022-11-03 02:38:36,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4112 states, 2563 states have (on average 1.3300819352321498) internal successors, (3409), 2619 states have internal predecessors, (3409), 1270 states have call successors, (1270), 280 states have call predecessors, (1270), 278 states have return successors, (1275), 1265 states have call predecessors, (1275), 1269 states have call successors, (1275) [2022-11-03 02:38:36,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4112 states to 4112 states and 5954 transitions. [2022-11-03 02:38:36,111 INFO L78 Accepts]: Start accepts. Automaton has 4112 states and 5954 transitions. Word has length 409 [2022-11-03 02:38:36,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:36,117 INFO L495 AbstractCegarLoop]: Abstraction has 4112 states and 5954 transitions. [2022-11-03 02:38:36,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2022-11-03 02:38:36,118 INFO L276 IsEmpty]: Start isEmpty. Operand 4112 states and 5954 transitions. [2022-11-03 02:38:36,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-11-03 02:38:36,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:36,135 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:36,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:38:36,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:36,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:36,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1886280795, now seen corresponding path program 1 times [2022-11-03 02:38:36,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:36,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807967537] [2022-11-03 02:38:36,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:36,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2817 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2817 trivial. 0 not checked. [2022-11-03 02:38:37,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:37,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807967537] [2022-11-03 02:38:37,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807967537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:37,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:37,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:38:37,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440663270] [2022-11-03 02:38:37,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:37,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:37,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:37,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:37,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:37,063 INFO L87 Difference]: Start difference. First operand 4112 states and 5954 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2022-11-03 02:38:39,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:41,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:43,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:46,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:48,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:52,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:53,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:38:55,629 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 [] [2022-11-03 02:38:56,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:56,039 INFO L93 Difference]: Finished difference Result 11773 states and 17009 transitions. [2022-11-03 02:38:56,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:38:56,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 413 [2022-11-03 02:38:56,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:56,091 INFO L225 Difference]: With dead ends: 11773 [2022-11-03 02:38:56,091 INFO L226 Difference]: Without dead ends: 7742 [2022-11-03 02:38:56,113 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 [2022-11-03 02:38:56,114 INFO L413 NwaCegarLoop]: 3649 mSDtfsCounter, 2613 mSDsluCounter, 3313 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2626 SdHoareTripleChecker+Valid, 6666 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:56,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2626 Valid, 6666 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 630 Invalid, 7 Unknown, 0 Unchecked, 18.6s Time] [2022-11-03 02:38:56,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7742 states. [2022-11-03 02:38:56,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7742 to 7724. [2022-11-03 02:38:56,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7724 states, 4823 states have (on average 1.3329877669500312) internal successors, (6429), 4931 states have internal predecessors, (6429), 2354 states have call successors, (2354), 548 states have call predecessors, (2354), 546 states have return successors, (2371), 2343 states have call predecessors, (2371), 2353 states have call successors, (2371) [2022-11-03 02:38:56,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7724 states to 7724 states and 11154 transitions. [2022-11-03 02:38:56,574 INFO L78 Accepts]: Start accepts. Automaton has 7724 states and 11154 transitions. Word has length 413 [2022-11-03 02:38:56,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:56,575 INFO L495 AbstractCegarLoop]: Abstraction has 7724 states and 11154 transitions. [2022-11-03 02:38:56,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2022-11-03 02:38:56,576 INFO L276 IsEmpty]: Start isEmpty. Operand 7724 states and 11154 transitions. [2022-11-03 02:38:56,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-03 02:38:56,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:56,585 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:56,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:38:56,586 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:56,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:56,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1091735190, now seen corresponding path program 1 times [2022-11-03 02:38:56,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:56,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848945515] [2022-11-03 02:38:56,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:56,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:57,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2817 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2817 trivial. 0 not checked. [2022-11-03 02:38:57,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:57,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848945515] [2022-11-03 02:38:57,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848945515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:57,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:57,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:38:57,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927880872] [2022-11-03 02:38:57,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:57,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:57,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:57,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:57,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:57,296 INFO L87 Difference]: Start difference. First operand 7724 states and 11154 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2022-11-03 02:38:59,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:01,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:03,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:06,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:08,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:12,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:15,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:15,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:15,751 INFO L93 Difference]: Finished difference Result 22371 states and 32242 transitions. [2022-11-03 02:39:15,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:39:15,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 414 [2022-11-03 02:39:15,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:15,851 INFO L225 Difference]: With dead ends: 22371 [2022-11-03 02:39:15,851 INFO L226 Difference]: Without dead ends: 14728 [2022-11-03 02:39:15,888 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 [2022-11-03 02:39:15,891 INFO L413 NwaCegarLoop]: 3662 mSDtfsCounter, 2540 mSDsluCounter, 3315 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2550 SdHoareTripleChecker+Valid, 6679 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:15,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2550 Valid, 6679 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 641 Invalid, 6 Unknown, 0 Unchecked, 18.0s Time] [2022-11-03 02:39:15,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14728 states. [2022-11-03 02:39:16,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14728 to 14712. [2022-11-03 02:39:16,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14712 states, 9187 states have (on average 1.3337324480243822) internal successors, (12253), 9395 states have internal predecessors, (12253), 4448 states have call successors, (4448), 1078 states have call predecessors, (4448), 1076 states have return successors, (4486), 4429 states have call predecessors, (4486), 4447 states have call successors, (4486) [2022-11-03 02:39:16,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14712 states to 14712 states and 21187 transitions. [2022-11-03 02:39:16,664 INFO L78 Accepts]: Start accepts. Automaton has 14712 states and 21187 transitions. Word has length 414 [2022-11-03 02:39:16,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:16,667 INFO L495 AbstractCegarLoop]: Abstraction has 14712 states and 21187 transitions. [2022-11-03 02:39:16,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2022-11-03 02:39:16,668 INFO L276 IsEmpty]: Start isEmpty. Operand 14712 states and 21187 transitions. [2022-11-03 02:39:16,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2022-11-03 02:39:16,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:16,680 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 16, 16, 16, 16, 16, 16, 16, 16, 16, 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] [2022-11-03 02:39:16,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:39:16,680 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:39:16,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:16,681 INFO L85 PathProgramCache]: Analyzing trace with hash -881094244, now seen corresponding path program 1 times [2022-11-03 02:39:16,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:16,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736847001] [2022-11-03 02:39:16,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:16,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:17,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2819 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2819 trivial. 0 not checked. [2022-11-03 02:39:17,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:17,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736847001] [2022-11-03 02:39:17,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736847001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:39:17,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:39:17,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:39:17,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893356830] [2022-11-03 02:39:17,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:39:17,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:39:17,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:17,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:39:17,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:39:17,693 INFO L87 Difference]: Start difference. First operand 14712 states and 21187 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-03 02:39:19,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:22,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:25,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:27,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:30,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:33,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:36,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:38,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:39,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:39,008 INFO L93 Difference]: Finished difference Result 36545 states and 52711 transitions. [2022-11-03 02:39:39,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:39:39,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 426 [2022-11-03 02:39:39,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:39,108 INFO L225 Difference]: With dead ends: 36545 [2022-11-03 02:39:39,108 INFO L226 Difference]: Without dead ends: 21914 [2022-11-03 02:39:39,162 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 [2022-11-03 02:39:39,162 INFO L413 NwaCegarLoop]: 3307 mSDtfsCounter, 1421 mSDsluCounter, 3279 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1426 SdHoareTripleChecker+Valid, 6294 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:39,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1426 Valid, 6294 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 654 Invalid, 7 Unknown, 0 Unchecked, 20.7s Time] [2022-11-03 02:39:39,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21914 states. [2022-11-03 02:39:40,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21914 to 21883. [2022-11-03 02:39:40,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21883 states, 13979 states have (on average 1.3543887259460619) internal successors, (18933), 14254 states have internal predecessors, (18933), 6309 states have call successors, (6309), 1596 states have call predecessors, (6309), 1594 states have return successors, (6363), 6263 states have call predecessors, (6363), 6308 states have call successors, (6363) [2022-11-03 02:39:40,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21883 states to 21883 states and 31605 transitions. [2022-11-03 02:39:40,346 INFO L78 Accepts]: Start accepts. Automaton has 21883 states and 31605 transitions. Word has length 426 [2022-11-03 02:39:40,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:40,347 INFO L495 AbstractCegarLoop]: Abstraction has 21883 states and 31605 transitions. [2022-11-03 02:39:40,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-03 02:39:40,347 INFO L276 IsEmpty]: Start isEmpty. Operand 21883 states and 31605 transitions. [2022-11-03 02:39:40,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-11-03 02:39:40,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:40,359 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 16, 16, 16, 16, 16, 16, 16, 16, 16, 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] [2022-11-03 02:39:40,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:39:40,360 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:39:40,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:40,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1977568883, now seen corresponding path program 1 times [2022-11-03 02:39:40,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:40,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797715836] [2022-11-03 02:39:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:40,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2819 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2819 trivial. 0 not checked. [2022-11-03 02:39:41,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:41,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797715836] [2022-11-03 02:39:41,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797715836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:39:41,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:39:41,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:39:41,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481789310] [2022-11-03 02:39:41,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:39:41,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:39:41,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:41,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:39:41,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:39:41,248 INFO L87 Difference]: Start difference. First operand 21883 states and 31605 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-03 02:39:43,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:45,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:47,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:51,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:53,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:55,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:57,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:39:59,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:01,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:40:01,364 INFO L93 Difference]: Finished difference Result 62019 states and 89211 transitions. [2022-11-03 02:40:01,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:40:01,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 445 [2022-11-03 02:40:01,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:40:01,550 INFO L225 Difference]: With dead ends: 62019 [2022-11-03 02:40:01,550 INFO L226 Difference]: Without dead ends: 40217 [2022-11-03 02:40:01,803 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 [2022-11-03 02:40:01,816 INFO L413 NwaCegarLoop]: 3711 mSDtfsCounter, 2379 mSDsluCounter, 3317 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2385 SdHoareTripleChecker+Valid, 6727 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:40:01,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2385 Valid, 6727 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 657 Invalid, 5 Unknown, 0 Unchecked, 19.0s Time] [2022-11-03 02:40:01,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40217 states. [2022-11-03 02:40:03,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40217 to 40200. [2022-11-03 02:40:03,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40200 states, 25614 states have (on average 1.347934723198251) internal successors, (34526), 26145 states have internal predecessors, (34526), 11543 states have call successors, (11543), 3044 states have call predecessors, (11543), 3042 states have return successors, (11623), 11465 states have call predecessors, (11623), 11542 states have call successors, (11623) [2022-11-03 02:40:04,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40200 states to 40200 states and 57692 transitions. [2022-11-03 02:40:04,177 INFO L78 Accepts]: Start accepts. Automaton has 40200 states and 57692 transitions. Word has length 445 [2022-11-03 02:40:04,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:40:04,178 INFO L495 AbstractCegarLoop]: Abstraction has 40200 states and 57692 transitions. [2022-11-03 02:40:04,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-03 02:40:04,178 INFO L276 IsEmpty]: Start isEmpty. Operand 40200 states and 57692 transitions. [2022-11-03 02:40:04,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-11-03 02:40:04,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:40:04,186 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 17, 17, 17, 17, 17, 17, 17, 17, 17, 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] [2022-11-03 02:40:04,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:40:04,187 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:40:04,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:40:04,188 INFO L85 PathProgramCache]: Analyzing trace with hash -593480595, now seen corresponding path program 1 times [2022-11-03 02:40:04,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:40:04,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663266426] [2022-11-03 02:40:04,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:04,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:40:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2987 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2981 trivial. 0 not checked. [2022-11-03 02:40:05,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:40:05,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663266426] [2022-11-03 02:40:05,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663266426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:40:05,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:40:05,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:40:05,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032340700] [2022-11-03 02:40:05,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:40:05,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:40:05,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:40:05,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:40:05,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:40:05,209 INFO L87 Difference]: Start difference. First operand 40200 states and 57692 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-03 02:40:07,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:09,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:12,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:15,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:18,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:19,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:22,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:25,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:25,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:40:25,777 INFO L93 Difference]: Finished difference Result 80321 states and 115267 transitions. [2022-11-03 02:40:25,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:40:25,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 486 [2022-11-03 02:40:25,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:40:26,001 INFO L225 Difference]: With dead ends: 80321 [2022-11-03 02:40:26,001 INFO L226 Difference]: Without dead ends: 40170 [2022-11-03 02:40:26,268 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 [2022-11-03 02:40:26,270 INFO L413 NwaCegarLoop]: 3027 mSDtfsCounter, 0 mSDsluCounter, 3325 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6050 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:40:26,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6050 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 606 Invalid, 6 Unknown, 0 Unchecked, 19.4s Time] [2022-11-03 02:40:26,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40170 states. [2022-11-03 02:40:27,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40170 to 40090. [2022-11-03 02:40:27,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40090 states, 25520 states have (on average 1.3476489028213166) internal successors, (34392), 26051 states have internal predecessors, (34392), 11535 states have call successors, (11535), 3036 states have call predecessors, (11535), 3034 states have return successors, (11615), 11449 states have call predecessors, (11615), 11534 states have call successors, (11615) [2022-11-03 02:40:28,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40090 states to 40090 states and 57542 transitions. [2022-11-03 02:40:28,160 INFO L78 Accepts]: Start accepts. Automaton has 40090 states and 57542 transitions. Word has length 486 [2022-11-03 02:40:28,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:40:28,161 INFO L495 AbstractCegarLoop]: Abstraction has 40090 states and 57542 transitions. [2022-11-03 02:40:28,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-03 02:40:28,162 INFO L276 IsEmpty]: Start isEmpty. Operand 40090 states and 57542 transitions. [2022-11-03 02:40:28,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2022-11-03 02:40:28,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:40:28,170 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 22, 22, 22, 22, 22, 22, 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] [2022-11-03 02:40:28,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:40:28,171 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:40:28,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:40:28,171 INFO L85 PathProgramCache]: Analyzing trace with hash 776712556, now seen corresponding path program 1 times [2022-11-03 02:40:28,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:40:28,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308152653] [2022-11-03 02:40:28,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:28,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:40:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:29,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4385 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4379 trivial. 0 not checked. [2022-11-03 02:40:29,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:40:29,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308152653] [2022-11-03 02:40:29,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308152653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:40:29,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:40:29,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:40:29,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466246399] [2022-11-03 02:40:29,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:40:29,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:40:29,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:40:29,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:40:29,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:40:29,722 INFO L87 Difference]: Start difference. First operand 40090 states and 57542 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-03 02:40:31,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:34,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:37,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:40,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:44,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:47,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:50,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:52,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:40:52,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:40:52,789 INFO L93 Difference]: Finished difference Result 80007 states and 114832 transitions. [2022-11-03 02:40:52,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:40:52,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 533 [2022-11-03 02:40:52,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:40:53,009 INFO L225 Difference]: With dead ends: 80007 [2022-11-03 02:40:53,009 INFO L226 Difference]: Without dead ends: 39966 [2022-11-03 02:40:53,370 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 [2022-11-03 02:40:53,371 INFO L413 NwaCegarLoop]: 3025 mSDtfsCounter, 1 mSDsluCounter, 6645 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9070 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:40:53,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 9070 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 906 Invalid, 8 Unknown, 0 Unchecked, 21.7s Time] [2022-11-03 02:40:53,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39966 states. [2022-11-03 02:40:54,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39966 to 39966. [2022-11-03 02:40:54,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39966 states, 25453 states have (on average 1.3473068007700468) internal successors, (34293), 25977 states have internal predecessors, (34293), 11486 states have call successors, (11486), 3028 states have call predecessors, (11486), 3026 states have return successors, (11566), 11407 states have call predecessors, (11566), 11485 states have call successors, (11566) [2022-11-03 02:40:54,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39966 states to 39966 states and 57345 transitions. [2022-11-03 02:40:54,990 INFO L78 Accepts]: Start accepts. Automaton has 39966 states and 57345 transitions. Word has length 533 [2022-11-03 02:40:54,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:40:54,991 INFO L495 AbstractCegarLoop]: Abstraction has 39966 states and 57345 transitions. [2022-11-03 02:40:54,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-03 02:40:54,991 INFO L276 IsEmpty]: Start isEmpty. Operand 39966 states and 57345 transitions. [2022-11-03 02:40:54,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2022-11-03 02:40:54,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:40:54,999 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 16, 16, 16, 16, 16, 16, 16, 16, 16, 9, 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] [2022-11-03 02:40:55,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:40:55,000 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:40:55,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:40:55,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1303497237, now seen corresponding path program 1 times [2022-11-03 02:40:55,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:40:55,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716434861] [2022-11-03 02:40:55,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:55,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:40:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:56,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2900 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2893 trivial. 0 not checked. [2022-11-03 02:40:56,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:40:56,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716434861] [2022-11-03 02:40:56,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716434861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:40:56,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:40:56,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:40:56,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803869124] [2022-11-03 02:40:56,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:40:56,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:40:56,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:40:56,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:40:56,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:40:56,339 INFO L87 Difference]: Start difference. First operand 39966 states and 57345 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-03 02:40:58,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:01,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:03,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:06,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:09,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:11,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:14,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:17,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:17,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:17,631 INFO L93 Difference]: Finished difference Result 113702 states and 162678 transitions. [2022-11-03 02:41:17,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:41:17,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 519 [2022-11-03 02:41:17,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:18,265 INFO L225 Difference]: With dead ends: 113702 [2022-11-03 02:41:18,265 INFO L226 Difference]: Without dead ends: 73817 [2022-11-03 02:41:18,399 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 [2022-11-03 02:41:18,400 INFO L413 NwaCegarLoop]: 4706 mSDtfsCounter, 2385 mSDsluCounter, 3311 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2394 SdHoareTripleChecker+Valid, 7718 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:18,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2394 Valid, 7718 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 807 Invalid, 6 Unknown, 0 Unchecked, 19.4s Time] [2022-11-03 02:41:18,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73817 states. [2022-11-03 02:41:21,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73817 to 73799. [2022-11-03 02:41:21,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73799 states, 47060 states have (on average 1.3497237569060774) internal successors, (63518), 47944 states have internal predecessors, (63518), 20860 states have call successors, (20860), 5880 states have call predecessors, (20860), 5878 states have return successors, (21024), 20733 states have call predecessors, (21024), 20859 states have call successors, (21024) [2022-11-03 02:41:21,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73799 states to 73799 states and 105402 transitions. [2022-11-03 02:41:21,634 INFO L78 Accepts]: Start accepts. Automaton has 73799 states and 105402 transitions. Word has length 519 [2022-11-03 02:41:21,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:21,635 INFO L495 AbstractCegarLoop]: Abstraction has 73799 states and 105402 transitions. [2022-11-03 02:41:21,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-03 02:41:21,636 INFO L276 IsEmpty]: Start isEmpty. Operand 73799 states and 105402 transitions. [2022-11-03 02:41:21,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2022-11-03 02:41:21,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:21,644 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 22, 22, 22, 22, 22, 22, 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] [2022-11-03 02:41:21,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:41:21,644 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:21,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:21,645 INFO L85 PathProgramCache]: Analyzing trace with hash 222053843, now seen corresponding path program 1 times [2022-11-03 02:41:21,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:41:21,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553398149] [2022-11-03 02:41:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:21,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:41:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4625 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4619 trivial. 0 not checked. [2022-11-03 02:41:22,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:41:22,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553398149] [2022-11-03 02:41:22,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553398149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:22,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:22,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:41:22,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007043813] [2022-11-03 02:41:22,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:22,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:41:22,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:41:22,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:41:22,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:41:22,904 INFO L87 Difference]: Start difference. First operand 73799 states and 105402 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-03 02:41:24,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:27,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:32,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:35,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:37,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:41,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:43,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:45,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:45,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:45,794 INFO L93 Difference]: Finished difference Result 183863 states and 262613 transitions. [2022-11-03 02:41:45,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:41:45,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 565 [2022-11-03 02:41:45,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:46,423 INFO L225 Difference]: With dead ends: 183863 [2022-11-03 02:41:46,423 INFO L226 Difference]: Without dead ends: 110145 [2022-11-03 02:41:46,670 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 [2022-11-03 02:41:46,671 INFO L413 NwaCegarLoop]: 4219 mSDtfsCounter, 2615 mSDsluCounter, 3298 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 5 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2628 SdHoareTripleChecker+Valid, 7224 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:46,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2628 Valid, 7224 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 688 Invalid, 8 Unknown, 0 Unchecked, 19.3s Time] [2022-11-03 02:41:46,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110145 states. [2022-11-03 02:41:50,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110145 to 110127. [2022-11-03 02:41:50,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110127 states, 70300 states have (on average 1.349302987197724) internal successors, (94856), 71624 states have internal predecessors, (94856), 31034 states have call successors, (31034), 8794 states have call predecessors, (31034), 8792 states have return successors, (31294), 30843 states have call predecessors, (31294), 31033 states have call successors, (31294) [2022-11-03 02:41:50,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110127 states to 110127 states and 157184 transitions. [2022-11-03 02:41:51,006 INFO L78 Accepts]: Start accepts. Automaton has 110127 states and 157184 transitions. Word has length 565 [2022-11-03 02:41:51,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:51,007 INFO L495 AbstractCegarLoop]: Abstraction has 110127 states and 157184 transitions. [2022-11-03 02:41:51,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-03 02:41:51,008 INFO L276 IsEmpty]: Start isEmpty. Operand 110127 states and 157184 transitions. [2022-11-03 02:41:51,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2022-11-03 02:41:51,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:51,017 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 22, 22, 22, 22, 22, 22, 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] [2022-11-03 02:41:51,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:41:51,017 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:51,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:51,018 INFO L85 PathProgramCache]: Analyzing trace with hash -381902036, now seen corresponding path program 1 times [2022-11-03 02:41:51,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:41:51,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868975207] [2022-11-03 02:41:51,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:51,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:41:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:52,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4625 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4619 trivial. 0 not checked. [2022-11-03 02:41:52,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:41:52,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868975207] [2022-11-03 02:41:52,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868975207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:52,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:52,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:41:52,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065191857] [2022-11-03 02:41:52,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:52,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:41:52,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:41:52,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:41:52,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:41:52,456 INFO L87 Difference]: Start difference. First operand 110127 states and 157184 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-03 02:41:53,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:55,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:41:58,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:42:04,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:42:07,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:42:09,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:42:13,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:42:16,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:42:16,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:16,482 INFO L93 Difference]: Finished difference Result 274812 states and 392334 transitions. [2022-11-03 02:42:16,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:42:16,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 569 [2022-11-03 02:42:16,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:17,391 INFO L225 Difference]: With dead ends: 274812 [2022-11-03 02:42:17,391 INFO L226 Difference]: Without dead ends: 164766 [2022-11-03 02:42:17,743 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 [2022-11-03 02:42:17,743 INFO L413 NwaCegarLoop]: 4050 mSDtfsCounter, 2628 mSDsluCounter, 3290 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 5 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2641 SdHoareTripleChecker+Valid, 7048 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:17,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2641 Valid, 7048 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 675 Invalid, 7 Unknown, 0 Unchecked, 18.8s Time] [2022-11-03 02:42:17,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164766 states.