./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 29069a6562e86cf14ec2af6e66fde431300c67391fef8a4bef75c88d837db303 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:29:22,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:29:22,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:29:22,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:29:22,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:29:22,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:29:22,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:29:22,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:29:22,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:29:22,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:29:22,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:29:22,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:29:22,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:29:22,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:29:22,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:29:22,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:29:22,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:29:22,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:29:22,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:29:22,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:29:22,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:29:22,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:29:22,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:29:22,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:29:22,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:29:22,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:29:22,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:29:22,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:29:22,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:29:22,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:29:22,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:29:22,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:29:22,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:29:22,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:29:22,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:29:22,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:29:22,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:29:22,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:29:22,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:29:22,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:29:22,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:29:22,956 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:29:22,996 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:29:22,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:29:22,997 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:29:22,998 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:29:22,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:29:22,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:29:22,999 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:29:22,999 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:29:23,000 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:29:23,000 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:29:23,001 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:29:23,001 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:29:23,002 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:29:23,002 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:29:23,002 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:29:23,002 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:29:23,003 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:29:23,003 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:29:23,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:29:23,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:29:23,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:29:23,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:29:23,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:29:23,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:29:23,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:29:23,005 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:29:23,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:29:23,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:29:23,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:29:23,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:29:23,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:29:23,007 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:29:23,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:29:23,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:29:23,008 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:29:23,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:29:23,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:29:23,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:29:23,009 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_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29069a6562e86cf14ec2af6e66fde431300c67391fef8a4bef75c88d837db303 [2022-11-19 08:29:23,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:29:23,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:29:23,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:29:23,371 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:29:23,372 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:29:23,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i [2022-11-19 08:29:23,445 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/data/8c6091b96/5d126446b235426f9120069a73062e8f/FLAG650811c17 [2022-11-19 08:29:24,399 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:29:24,400 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i [2022-11-19 08:29:24,443 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/data/8c6091b96/5d126446b235426f9120069a73062e8f/FLAG650811c17 [2022-11-19 08:29:24,797 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/data/8c6091b96/5d126446b235426f9120069a73062e8f [2022-11-19 08:29:24,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:29:24,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:29:24,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:29:24,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:29:24,828 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:29:24,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:29:24" (1/1) ... [2022-11-19 08:29:24,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336bd655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:24, skipping insertion in model container [2022-11-19 08:29:24,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:29:24" (1/1) ... [2022-11-19 08:29:24,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:29:24,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:29:25,769 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i[183631,183644] [2022-11-19 08:29:28,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:29:28,652 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:29:28,827 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i[183631,183644] [2022-11-19 08:29:29,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:29:29,496 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:29:29,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:29 WrapperNode [2022-11-19 08:29:29,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:29:29,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:29:29,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:29:29,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:29:29,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:29" (1/1) ... [2022-11-19 08:29:29,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:29" (1/1) ... [2022-11-19 08:29:29,973 INFO L138 Inliner]: procedures = 458, calls = 3206, calls flagged for inlining = 222, calls inlined = 195, statements flattened = 7794 [2022-11-19 08:29:29,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:29:29,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:29:29,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:29:29,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:29:29,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:29" (1/1) ... [2022-11-19 08:29:29,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:29" (1/1) ... [2022-11-19 08:29:30,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:29" (1/1) ... [2022-11-19 08:29:30,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:29" (1/1) ... [2022-11-19 08:29:30,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:29" (1/1) ... [2022-11-19 08:29:30,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:29" (1/1) ... [2022-11-19 08:29:30,308 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:29" (1/1) ... [2022-11-19 08:29:30,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:29" (1/1) ... [2022-11-19 08:29:30,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:29:30,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:29:30,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:29:30,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:29:30,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:29" (1/1) ... [2022-11-19 08:29:30,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:29:30,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:29:30,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:29:30,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:29:30,556 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2022-11-19 08:29:30,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2022-11-19 08:29:30,557 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 08:29:30,557 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 08:29:30,557 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 08:29:30,557 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 08:29:30,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:29:30,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:29:30,558 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-19 08:29:30,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-19 08:29:30,558 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_function_pointers_vf [2022-11-19 08:29:30,558 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_function_pointers_vf [2022-11-19 08:29:30,559 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2022-11-19 08:29:30,559 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2022-11-19 08:29:30,559 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-19 08:29:30,559 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-19 08:29:30,559 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 08:29:30,559 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 08:29:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 08:29:30,560 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 08:29:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_alloc_rx_buffers [2022-11-19 08:29:30,560 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_alloc_rx_buffers [2022-11-19 08:29:30,561 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-19 08:29:30,561 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-19 08:29:30,561 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_mac_addr_vf [2022-11-19 08:29:30,561 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_mac_addr_vf [2022-11-19 08:29:30,561 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 08:29:30,562 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 08:29:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw_vf [2022-11-19 08:29:30,562 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw_vf [2022-11-19 08:29:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_maybe_stop_tx [2022-11-19 08:29:30,563 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_maybe_stop_tx [2022-11-19 08:29:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_set_mac [2022-11-19 08:29:30,563 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_set_mac [2022-11-19 08:29:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 08:29:30,563 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 08:29:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 08:29:30,564 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 08:29:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-19 08:29:30,564 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-19 08:29:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_clean_tx_irq [2022-11-19 08:29:30,564 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_clean_tx_irq [2022-11-19 08:29:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2022-11-19 08:29:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-19 08:29:30,565 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-19 08:29:30,565 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_suspend [2022-11-19 08:29:30,566 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_suspend [2022-11-19 08:29:30,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:29:30,567 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_ioctl [2022-11-19 08:29:30,568 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_ioctl [2022-11-19 08:29:30,568 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-19 08:29:30,568 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-19 08:29:30,568 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-19 08:29:30,568 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-19 08:29:30,569 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-19 08:29:30,569 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-19 08:29:30,569 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 08:29:30,569 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 08:29:30,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 08:29:30,570 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_assign_vector [2022-11-19 08:29:30,571 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_assign_vector [2022-11-19 08:29:30,571 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 08:29:30,571 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 08:29:30,571 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 08:29:30,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 08:29:30,571 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_change_mtu [2022-11-19 08:29:30,572 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_change_mtu [2022-11-19 08:29:30,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 08:29:30,572 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_desc_unused [2022-11-19 08:29:30,572 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_desc_unused [2022-11-19 08:29:30,572 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_4 [2022-11-19 08:29:30,572 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_4 [2022-11-19 08:29:30,573 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_io_error_detected [2022-11-19 08:29:30,574 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_io_error_detected [2022-11-19 08:29:30,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:29:30,574 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_netpoll [2022-11-19 08:29:30,574 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_netpoll [2022-11-19 08:29:30,574 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 08:29:30,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 08:29:30,575 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2022-11-19 08:29:30,575 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2022-11-19 08:29:30,575 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_reset_interrupt_capability [2022-11-19 08:29:30,575 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_reset_interrupt_capability [2022-11-19 08:29:30,576 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2022-11-19 08:29:30,576 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2022-11-19 08:29:30,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 08:29:30,576 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 08:29:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_msg_vf [2022-11-19 08:29:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_msg_vf [2022-11-19 08:29:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-19 08:29:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-19 08:29:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_free_tx_resources [2022-11-19 08:29:30,579 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_free_tx_resources [2022-11-19 08:29:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2022-11-19 08:29:30,579 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2022-11-19 08:29:30,580 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_3 [2022-11-19 08:29:30,580 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_3 [2022-11-19 08:29:30,580 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-19 08:29:30,580 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-19 08:29:30,580 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 08:29:30,580 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 08:29:30,581 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2022-11-19 08:29:30,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2022-11-19 08:29:30,581 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2022-11-19 08:29:30,581 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2022-11-19 08:29:30,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2022-11-19 08:29:30,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:29:30,582 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_4 [2022-11-19 08:29:30,582 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_4 [2022-11-19 08:29:30,583 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-19 08:29:30,584 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-19 08:29:30,586 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_configure_msix [2022-11-19 08:29:30,587 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_configure_msix [2022-11-19 08:29:30,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:29:30,587 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-19 08:29:30,588 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-19 08:29:30,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:29:30,590 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-11-19 08:29:30,591 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-11-19 08:29:30,591 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_reset [2022-11-19 08:29:30,595 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_reset [2022-11-19 08:29:30,596 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_posted_mbx [2022-11-19 08:29:30,596 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_posted_mbx [2022-11-19 08:29:30,596 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-19 08:29:30,596 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-19 08:29:30,596 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_irq_enable [2022-11-19 08:29:30,596 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_irq_enable [2022-11-19 08:29:30,596 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-19 08:29:30,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-19 08:29:30,597 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-19 08:29:30,597 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-19 08:29:30,597 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_reinit_locked [2022-11-19 08:29:30,597 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_reinit_locked [2022-11-19 08:29:30,597 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 08:29:30,598 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 08:29:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_update_stats [2022-11-19 08:29:30,598 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_update_stats [2022-11-19 08:29:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_vlan_rx_add_vid [2022-11-19 08:29:30,598 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_vlan_rx_add_vid [2022-11-19 08:29:30,598 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 08:29:30,599 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 08:29:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-19 08:29:30,599 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-19 08:29:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_bit_vf [2022-11-19 08:29:30,599 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_bit_vf [2022-11-19 08:29:30,599 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_hw_vf [2022-11-19 08:29:30,600 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_hw_vf [2022-11-19 08:29:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:29:30,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:29:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-19 08:29:30,600 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-19 08:29:30,600 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_ack [2022-11-19 08:29:30,600 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_ack [2022-11-19 08:29:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 08:29:30,601 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 08:29:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 08:29:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 08:29:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:29:30,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:29:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-19 08:29:30,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-19 08:29:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set_vf [2022-11-19 08:29:30,602 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set_vf [2022-11-19 08:29:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-19 08:29:30,602 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-19 08:29:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 08:29:30,603 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 08:29:30,603 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-19 08:29:30,603 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-19 08:29:30,603 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_down [2022-11-19 08:29:30,603 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_down [2022-11-19 08:29:30,603 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_get_regs_len [2022-11-19 08:29:30,603 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_get_regs_len [2022-11-19 08:29:30,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_6 [2022-11-19 08:29:30,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_6 [2022-11-19 08:29:30,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 08:29:30,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 08:29:30,604 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_free_irq [2022-11-19 08:29:30,604 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_free_irq [2022-11-19 08:29:30,605 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2022-11-19 08:29:30,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2022-11-19 08:29:30,605 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-19 08:29:30,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-19 08:29:30,605 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link_vf [2022-11-19 08:29:30,607 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link_vf [2022-11-19 08:29:30,607 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-19 08:29:30,607 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-19 08:29:30,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 08:29:30,608 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 08:29:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 08:29:30,608 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 08:29:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 08:29:30,608 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 08:29:30,608 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_clean_tx_ring [2022-11-19 08:29:30,609 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_clean_tx_ring [2022-11-19 08:29:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_v2p_mailbox [2022-11-19 08:29:30,609 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_v2p_mailbox [2022-11-19 08:29:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_3 [2022-11-19 08:29:30,609 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_3 [2022-11-19 08:29:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-19 08:29:30,609 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-19 08:29:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-19 08:29:30,610 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-19 08:29:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-19 08:29:30,610 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-19 08:29:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_4 [2022-11-19 08:29:30,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_4 [2022-11-19 08:29:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:29:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 08:29:30,611 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 08:29:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_remove [2022-11-19 08:29:30,611 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_remove [2022-11-19 08:29:30,611 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-19 08:29:30,611 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-19 08:29:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 08:29:30,612 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 08:29:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_irq_disable [2022-11-19 08:29:30,612 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_irq_disable [2022-11-19 08:29:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:29:30,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-11-19 08:29:30,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-11-19 08:29:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_io_slot_reset [2022-11-19 08:29:30,613 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_io_slot_reset [2022-11-19 08:29:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_configure [2022-11-19 08:29:30,613 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_configure [2022-11-19 08:29:30,613 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_setup_rx_resources [2022-11-19 08:29:30,613 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_setup_rx_resources [2022-11-19 08:29:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_clean_rx_ring [2022-11-19 08:29:30,614 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_clean_rx_ring [2022-11-19 08:29:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2022-11-19 08:29:30,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2022-11-19 08:29:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_obtain_mbx_lock_vf [2022-11-19 08:29:30,614 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_obtain_mbx_lock_vf [2022-11-19 08:29:30,614 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-19 08:29:30,615 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-19 08:29:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:29:30,615 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_ack_vf [2022-11-19 08:29:30,616 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_ack_vf [2022-11-19 08:29:30,620 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 08:29:30,620 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 08:29:30,620 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-19 08:29:30,620 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-19 08:29:30,621 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 08:29:30,621 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 08:29:30,621 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_request_irq [2022-11-19 08:29:30,621 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_request_irq [2022-11-19 08:29:30,621 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-19 08:29:30,622 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-19 08:29:30,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 08:29:30,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 08:29:30,623 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_put_txbuf [2022-11-19 08:29:30,624 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_put_txbuf [2022-11-19 08:29:30,624 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2022-11-19 08:29:30,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2022-11-19 08:29:30,624 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_msg [2022-11-19 08:29:30,624 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_msg [2022-11-19 08:29:30,624 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2022-11-19 08:29:30,624 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2022-11-19 08:29:30,625 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-19 08:29:30,625 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-19 08:29:30,625 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 08:29:30,625 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 08:29:30,625 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-19 08:29:30,625 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-19 08:29:30,625 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_shutdown [2022-11-19 08:29:30,625 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_shutdown [2022-11-19 08:29:30,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-11-19 08:29:30,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-11-19 08:29:30,626 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 08:29:30,626 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 08:29:30,626 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_4 [2022-11-19 08:29:30,626 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_4 [2022-11-19 08:29:30,626 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-19 08:29:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-19 08:29:30,627 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_setup_tx_resources [2022-11-19 08:29:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_setup_tx_resources [2022-11-19 08:29:30,627 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:29:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:29:30,627 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_get_eeprom_len [2022-11-19 08:29:30,627 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_get_eeprom_len [2022-11-19 08:29:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:29:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_get_stats [2022-11-19 08:29:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_get_stats [2022-11-19 08:29:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~X~~bool~0~TO~~s32~0 [2022-11-19 08:29:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~X~~bool~0~TO~~s32~0 [2022-11-19 08:29:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:29:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:29:30,629 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_vlan_rx_kill_vid [2022-11-19 08:29:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_vlan_rx_kill_vid [2022-11-19 08:29:30,629 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2022-11-19 08:29:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2022-11-19 08:29:30,629 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 08:29:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 08:29:30,629 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-19 08:29:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-19 08:29:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-11-19 08:29:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-11-19 08:29:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_io_resume [2022-11-19 08:29:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_io_resume [2022-11-19 08:29:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-19 08:29:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-19 08:29:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_3 [2022-11-19 08:29:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_3 [2022-11-19 08:29:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-11-19 08:29:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-11-19 08:29:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_free_rx_resources [2022-11-19 08:29:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_free_rx_resources [2022-11-19 08:29:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_set_features [2022-11-19 08:29:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_set_features [2022-11-19 08:29:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_set_multi [2022-11-19 08:29:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_set_multi [2022-11-19 08:29:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_tx_timeout [2022-11-19 08:29:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_tx_timeout [2022-11-19 08:29:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-19 08:29:30,632 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-19 08:29:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-19 08:29:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-19 08:29:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_posted_mbx [2022-11-19 08:29:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_posted_mbx [2022-11-19 08:29:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-19 08:29:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-19 08:29:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_up [2022-11-19 08:29:30,634 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_up [2022-11-19 08:29:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-19 08:29:30,634 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-19 08:29:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:29:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-19 08:29:30,634 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-19 08:29:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-19 08:29:31,934 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:29:31,938 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:29:32,518 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:29:41,687 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:29:44,949 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:29:44,949 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 08:29:44,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:29:44 BoogieIcfgContainer [2022-11-19 08:29:44,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:29:44,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:29:44,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:29:44,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:29:44,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:29:24" (1/3) ... [2022-11-19 08:29:44,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0a7408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:29:44, skipping insertion in model container [2022-11-19 08:29:44,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:29:29" (2/3) ... [2022-11-19 08:29:44,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0a7408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:29:44, skipping insertion in model container [2022-11-19 08:29:44,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:29:44" (3/3) ... [2022-11-19 08:29:44,972 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--intel--igbvf--igbvf.ko-entry_point.cil.out.i [2022-11-19 08:29:44,996 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:29:44,997 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:29:45,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:29:45,122 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;@460b4ea0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:29:45,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:29:45,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 2262 states, 1397 states have (on average 1.3206871868289192) internal successors, (1845), 1457 states have internal predecessors, (1845), 709 states have call successors, (709), 155 states have call predecessors, (709), 154 states have return successors, (694), 680 states have call predecessors, (694), 694 states have call successors, (694) [2022-11-19 08:29:45,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-19 08:29:45,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:45,173 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:29:45,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:45,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:45,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1712877039, now seen corresponding path program 1 times [2022-11-19 08:29:45,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:29:45,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958744511] [2022-11-19 08:29:45,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:45,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:29:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:46,239 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-19 08:29:46,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:29:46,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958744511] [2022-11-19 08:29:46,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958744511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:46,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:29:46,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:29:46,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142961627] [2022-11-19 08:29:46,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:46,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:29:46,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:29:46,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:29:46,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:29:46,306 INFO L87 Difference]: Start difference. First operand has 2262 states, 1397 states have (on average 1.3206871868289192) internal successors, (1845), 1457 states have internal predecessors, (1845), 709 states have call successors, (709), 155 states have call predecessors, (709), 154 states have return successors, (694), 680 states have call predecessors, (694), 694 states have call successors, (694) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-19 08:29:49,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:53,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:55,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:29:55,173 INFO L93 Difference]: Finished difference Result 6711 states and 9709 transitions. [2022-11-19 08:29:55,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:29:55,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 79 [2022-11-19 08:29:55,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:29:55,221 INFO L225 Difference]: With dead ends: 6711 [2022-11-19 08:29:55,221 INFO L226 Difference]: Without dead ends: 4422 [2022-11-19 08:29:55,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:29:55,250 INFO L413 NwaCegarLoop]: 3600 mSDtfsCounter, 3159 mSDsluCounter, 2914 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3159 SdHoareTripleChecker+Valid, 6514 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:29:55,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3159 Valid, 6514 Invalid, 658 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-11-19 08:29:55,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2022-11-19 08:29:55,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 4422. [2022-11-19 08:29:55,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4422 states, 2748 states have (on average 1.3038573508005822) internal successors, (3583), 2834 states have internal predecessors, (3583), 1367 states have call successors, (1367), 307 states have call predecessors, (1367), 306 states have return successors, (1366), 1338 states have call predecessors, (1366), 1366 states have call successors, (1366) [2022-11-19 08:29:55,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4422 states to 4422 states and 6316 transitions. [2022-11-19 08:29:55,652 INFO L78 Accepts]: Start accepts. Automaton has 4422 states and 6316 transitions. Word has length 79 [2022-11-19 08:29:55,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:29:55,654 INFO L495 AbstractCegarLoop]: Abstraction has 4422 states and 6316 transitions. [2022-11-19 08:29:55,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-19 08:29:55,654 INFO L276 IsEmpty]: Start isEmpty. Operand 4422 states and 6316 transitions. [2022-11-19 08:29:55,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-19 08:29:55,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:29:55,664 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:29:55,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:29:55,665 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:29:55,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:29:55,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2109757012, now seen corresponding path program 1 times [2022-11-19 08:29:55,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:29:55,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758401042] [2022-11-19 08:29:55,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:29:55,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:29:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:29:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-19 08:29:56,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:29:56,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758401042] [2022-11-19 08:29:56,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758401042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:29:56,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:29:56,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:29:56,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644705545] [2022-11-19 08:29:56,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:29:56,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:29:56,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:29:56,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:29:56,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:29:56,384 INFO L87 Difference]: Start difference. First operand 4422 states and 6316 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:29:58,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:29:59,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:01,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:08,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:30:08,203 INFO L93 Difference]: Finished difference Result 8821 states and 12670 transitions. [2022-11-19 08:30:08,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:30:08,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 81 [2022-11-19 08:30:08,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:30:08,269 INFO L225 Difference]: With dead ends: 8821 [2022-11-19 08:30:08,270 INFO L226 Difference]: Without dead ends: 8816 [2022-11-19 08:30:08,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:30:08,278 INFO L413 NwaCegarLoop]: 3613 mSDtfsCounter, 3163 mSDsluCounter, 6488 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3163 SdHoareTripleChecker+Valid, 10101 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:30:08,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3163 Valid, 10101 Invalid, 968 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2022-11-19 08:30:08,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8816 states. [2022-11-19 08:30:08,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8816 to 8810. [2022-11-19 08:30:08,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8810 states, 5475 states have (on average 1.3042922374429224) internal successors, (7141), 5647 states have internal predecessors, (7141), 2722 states have call successors, (2722), 613 states have call predecessors, (2722), 612 states have return successors, (2793), 2665 states have call predecessors, (2793), 2721 states have call successors, (2793) [2022-11-19 08:30:08,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8810 states to 8810 states and 12656 transitions. [2022-11-19 08:30:08,822 INFO L78 Accepts]: Start accepts. Automaton has 8810 states and 12656 transitions. Word has length 81 [2022-11-19 08:30:08,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:30:08,825 INFO L495 AbstractCegarLoop]: Abstraction has 8810 states and 12656 transitions. [2022-11-19 08:30:08,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 08:30:08,826 INFO L276 IsEmpty]: Start isEmpty. Operand 8810 states and 12656 transitions. [2022-11-19 08:30:08,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-11-19 08:30:08,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:30:08,868 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:30:08,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:30:08,868 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:30:08,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:30:08,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1770758870, now seen corresponding path program 1 times [2022-11-19 08:30:08,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:30:08,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780989890] [2022-11-19 08:30:08,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:30:08,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:30:09,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:30:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-11-19 08:30:09,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:30:09,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780989890] [2022-11-19 08:30:09,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780989890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:30:09,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:30:09,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:30:09,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271101104] [2022-11-19 08:30:09,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:30:09,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:30:09,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:30:09,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:30:09,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:30:09,522 INFO L87 Difference]: Start difference. First operand 8810 states and 12656 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-19 08:30:11,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:12,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:14,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:17,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:30:17,917 INFO L93 Difference]: Finished difference Result 26120 states and 37484 transitions. [2022-11-19 08:30:17,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:30:17,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 306 [2022-11-19 08:30:17,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:30:18,081 INFO L225 Difference]: With dead ends: 26120 [2022-11-19 08:30:18,082 INFO L226 Difference]: Without dead ends: 17333 [2022-11-19 08:30:18,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:30:18,140 INFO L413 NwaCegarLoop]: 3536 mSDtfsCounter, 3085 mSDsluCounter, 2814 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3085 SdHoareTripleChecker+Valid, 6350 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:30:18,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3085 Valid, 6350 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-19 08:30:18,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17333 states. [2022-11-19 08:30:19,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17333 to 17326. [2022-11-19 08:30:19,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17326 states, 10763 states have (on average 1.3025178853479513) internal successors, (14019), 11105 states have internal predecessors, (14019), 5350 states have call successors, (5350), 1213 states have call predecessors, (5350), 1212 states have return successors, (5483), 5235 states have call predecessors, (5483), 5349 states have call successors, (5483) [2022-11-19 08:30:19,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17326 states to 17326 states and 24852 transitions. [2022-11-19 08:30:19,441 INFO L78 Accepts]: Start accepts. Automaton has 17326 states and 24852 transitions. Word has length 306 [2022-11-19 08:30:19,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:30:19,442 INFO L495 AbstractCegarLoop]: Abstraction has 17326 states and 24852 transitions. [2022-11-19 08:30:19,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-19 08:30:19,443 INFO L276 IsEmpty]: Start isEmpty. Operand 17326 states and 24852 transitions. [2022-11-19 08:30:19,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-11-19 08:30:19,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:30:19,522 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:30:19,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:30:19,522 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:30:19,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:30:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1582549600, now seen corresponding path program 1 times [2022-11-19 08:30:19,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:30:19,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149597287] [2022-11-19 08:30:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:30:19,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:30:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:30:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-19 08:30:20,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:30:20,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149597287] [2022-11-19 08:30:20,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149597287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:30:20,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:30:20,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:30:20,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360281519] [2022-11-19 08:30:20,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:30:20,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:30:20,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:30:20,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:30:20,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:30:20,252 INFO L87 Difference]: Start difference. First operand 17326 states and 24852 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-19 08:30:26,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:30:26,546 INFO L93 Difference]: Finished difference Result 48906 states and 69950 transitions. [2022-11-19 08:30:26,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:30:26,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 337 [2022-11-19 08:30:26,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:30:26,765 INFO L225 Difference]: With dead ends: 48906 [2022-11-19 08:30:26,765 INFO L226 Difference]: Without dead ends: 31603 [2022-11-19 08:30:26,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:30:26,870 INFO L413 NwaCegarLoop]: 3580 mSDtfsCounter, 2614 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2614 SdHoareTripleChecker+Valid, 6399 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:30:26,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2614 Valid, 6399 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-19 08:30:26,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31603 states. [2022-11-19 08:30:28,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31603 to 31598. [2022-11-19 08:30:28,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31598 states, 19759 states have (on average 1.3040639708487272) internal successors, (25767), 20309 states have internal predecessors, (25767), 9562 states have call successors, (9562), 2277 states have call predecessors, (9562), 2276 states have return successors, (9791), 9391 states have call predecessors, (9791), 9561 states have call successors, (9791) [2022-11-19 08:30:28,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31598 states to 31598 states and 45120 transitions. [2022-11-19 08:30:28,992 INFO L78 Accepts]: Start accepts. Automaton has 31598 states and 45120 transitions. Word has length 337 [2022-11-19 08:30:28,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:30:28,992 INFO L495 AbstractCegarLoop]: Abstraction has 31598 states and 45120 transitions. [2022-11-19 08:30:28,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-19 08:30:28,993 INFO L276 IsEmpty]: Start isEmpty. Operand 31598 states and 45120 transitions. [2022-11-19 08:30:29,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-11-19 08:30:29,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:30:29,113 INFO L195 NwaCegarLoop]: trace histogram [12, 7, 7, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:30:29,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:30:29,114 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:30:29,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:30:29,115 INFO L85 PathProgramCache]: Analyzing trace with hash -316182891, now seen corresponding path program 1 times [2022-11-19 08:30:29,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:30:29,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407741216] [2022-11-19 08:30:29,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:30:29,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:30:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:30:29,675 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2022-11-19 08:30:29,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:30:29,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407741216] [2022-11-19 08:30:29,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407741216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:30:29,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:30:29,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:30:29,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313415688] [2022-11-19 08:30:29,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:30:29,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:30:29,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:30:29,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:30:29,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:30:29,681 INFO L87 Difference]: Start difference. First operand 31598 states and 45120 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-19 08:30:32,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:35,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:37,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:40,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:30:40,271 INFO L93 Difference]: Finished difference Result 87364 states and 124204 transitions. [2022-11-19 08:30:40,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:30:40,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 392 [2022-11-19 08:30:40,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:30:40,603 INFO L225 Difference]: With dead ends: 87364 [2022-11-19 08:30:40,604 INFO L226 Difference]: Without dead ends: 55789 [2022-11-19 08:30:40,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:30:40,942 INFO L413 NwaCegarLoop]: 3394 mSDtfsCounter, 2523 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2523 SdHoareTripleChecker+Valid, 6110 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:30:40,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2523 Valid, 6110 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-19 08:30:41,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55789 states. [2022-11-19 08:30:44,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55789 to 55688. [2022-11-19 08:30:44,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55688 states, 34823 states have (on average 1.3020991873187262) internal successors, (45343), 35859 states have internal predecessors, (45343), 16624 states have call successors, (16624), 4249 states have call predecessors, (16624), 4240 states have return successors, (17019), 16235 states have call predecessors, (17019), 16623 states have call successors, (17019) [2022-11-19 08:30:44,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55688 states to 55688 states and 78986 transitions. [2022-11-19 08:30:44,884 INFO L78 Accepts]: Start accepts. Automaton has 55688 states and 78986 transitions. Word has length 392 [2022-11-19 08:30:44,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:30:44,885 INFO L495 AbstractCegarLoop]: Abstraction has 55688 states and 78986 transitions. [2022-11-19 08:30:44,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-19 08:30:44,886 INFO L276 IsEmpty]: Start isEmpty. Operand 55688 states and 78986 transitions. [2022-11-19 08:30:44,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-11-19 08:30:44,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:30:44,981 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:30:44,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:30:44,982 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:30:44,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:30:44,983 INFO L85 PathProgramCache]: Analyzing trace with hash -585654353, now seen corresponding path program 1 times [2022-11-19 08:30:44,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:30:44,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133724508] [2022-11-19 08:30:44,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:30:44,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:30:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:30:45,665 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2022-11-19 08:30:45,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:30:45,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133724508] [2022-11-19 08:30:45,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133724508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:30:45,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:30:45,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:30:45,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84670988] [2022-11-19 08:30:45,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:30:45,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:30:45,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:30:45,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:30:45,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:30:45,670 INFO L87 Difference]: Start difference. First operand 55688 states and 78986 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-19 08:30:48,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:49,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:52,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:30:59,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:30:59,372 INFO L93 Difference]: Finished difference Result 139362 states and 197694 transitions. [2022-11-19 08:30:59,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:30:59,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 374 [2022-11-19 08:30:59,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:00,002 INFO L225 Difference]: With dead ends: 139362 [2022-11-19 08:31:00,003 INFO L226 Difference]: Without dead ends: 83697 [2022-11-19 08:31:00,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:00,238 INFO L413 NwaCegarLoop]: 5191 mSDtfsCounter, 3115 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3115 SdHoareTripleChecker+Valid, 8030 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:00,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3115 Valid, 8030 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 915 Invalid, 1 Unknown, 0 Unchecked, 10.5s Time] [2022-11-19 08:31:00,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83697 states. [2022-11-19 08:31:04,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83697 to 83688. [2022-11-19 08:31:04,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83688 states, 52383 states have (on average 1.3009373269953992) internal successors, (68147), 53943 states have internal predecessors, (68147), 24924 states have call successors, (24924), 6393 states have call predecessors, (24924), 6380 states have return successors, (25503), 24339 states have call predecessors, (25503), 24923 states have call successors, (25503) [2022-11-19 08:31:05,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83688 states to 83688 states and 118574 transitions. [2022-11-19 08:31:05,303 INFO L78 Accepts]: Start accepts. Automaton has 83688 states and 118574 transitions. Word has length 374 [2022-11-19 08:31:05,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:05,305 INFO L495 AbstractCegarLoop]: Abstraction has 83688 states and 118574 transitions. [2022-11-19 08:31:05,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-19 08:31:05,306 INFO L276 IsEmpty]: Start isEmpty. Operand 83688 states and 118574 transitions. [2022-11-19 08:31:05,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-11-19 08:31:05,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:05,402 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:05,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:31:05,402 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:31:05,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:05,403 INFO L85 PathProgramCache]: Analyzing trace with hash -115321289, now seen corresponding path program 1 times [2022-11-19 08:31:05,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:05,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915334633] [2022-11-19 08:31:05,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:05,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2022-11-19 08:31:07,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:07,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915334633] [2022-11-19 08:31:07,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915334633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:07,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:07,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 08:31:07,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649893218] [2022-11-19 08:31:07,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:07,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 08:31:07,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:07,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 08:31:07,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:31:07,224 INFO L87 Difference]: Start difference. First operand 83688 states and 118574 transitions. Second operand has 8 states, 6 states have (on average 29.666666666666668) internal successors, (178), 6 states have internal predecessors, (178), 3 states have call successors, (65), 2 states have call predecessors, (65), 3 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-19 08:31:11,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:14,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:16,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:17,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:28,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:28,727 INFO L93 Difference]: Finished difference Result 167737 states and 238650 transitions. [2022-11-19 08:31:28,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 08:31:28,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 29.666666666666668) internal successors, (178), 6 states have internal predecessors, (178), 3 states have call successors, (65), 2 states have call predecessors, (65), 3 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) Word has length 374 [2022-11-19 08:31:28,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:29,313 INFO L225 Difference]: With dead ends: 167737 [2022-11-19 08:31:29,313 INFO L226 Difference]: Without dead ends: 84072 [2022-11-19 08:31:30,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-19 08:31:30,026 INFO L413 NwaCegarLoop]: 2858 mSDtfsCounter, 10 mSDsluCounter, 17096 mSDsCounter, 0 mSdLazyCounter, 2455 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 19954 SdHoareTripleChecker+Invalid, 2465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2455 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:30,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 19954 Invalid, 2465 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 2455 Invalid, 2 Unknown, 0 Unchecked, 18.1s Time] [2022-11-19 08:31:30,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84072 states. [2022-11-19 08:31:33,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84072 to 83832. [2022-11-19 08:31:33,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83832 states, 52479 states have (on average 1.3003868213952248) internal successors, (68243), 53991 states have internal predecessors, (68243), 24972 states have call successors, (24972), 6393 states have call predecessors, (24972), 6380 states have return successors, (25551), 24387 states have call predecessors, (25551), 24971 states have call successors, (25551) [2022-11-19 08:31:34,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83832 states to 83832 states and 118766 transitions. [2022-11-19 08:31:34,177 INFO L78 Accepts]: Start accepts. Automaton has 83832 states and 118766 transitions. Word has length 374 [2022-11-19 08:31:34,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:34,177 INFO L495 AbstractCegarLoop]: Abstraction has 83832 states and 118766 transitions. [2022-11-19 08:31:34,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 29.666666666666668) internal successors, (178), 6 states have internal predecessors, (178), 3 states have call successors, (65), 2 states have call predecessors, (65), 3 states have return successors, (64), 4 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-19 08:31:34,178 INFO L276 IsEmpty]: Start isEmpty. Operand 83832 states and 118766 transitions. [2022-11-19 08:31:34,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2022-11-19 08:31:34,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:34,272 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:34,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:31:34,272 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:31:34,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:34,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1011850331, now seen corresponding path program 1 times [2022-11-19 08:31:34,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:34,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754021502] [2022-11-19 08:31:34,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:34,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:34,764 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2022-11-19 08:31:34,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:34,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754021502] [2022-11-19 08:31:34,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754021502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:31:34,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:31:34,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:31:34,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776851964] [2022-11-19 08:31:34,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:34,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:31:34,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:34,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:31:34,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:34,768 INFO L87 Difference]: Start difference. First operand 83832 states and 118766 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2022-11-19 08:31:37,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:39,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:40,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:31:45,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:31:45,052 INFO L93 Difference]: Finished difference Result 125871 states and 179208 transitions. [2022-11-19 08:31:45,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:31:45,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 377 [2022-11-19 08:31:45,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:31:45,578 INFO L225 Difference]: With dead ends: 125871 [2022-11-19 08:31:45,579 INFO L226 Difference]: Without dead ends: 83928 [2022-11-19 08:31:45,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:31:45,764 INFO L413 NwaCegarLoop]: 2873 mSDtfsCounter, 4 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5740 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:31:45,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5740 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-19 08:31:45,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83928 states. [2022-11-19 08:31:49,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83928 to 83928. [2022-11-19 08:31:49,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83928 states, 52551 states have (on average 1.2999752621263154) internal successors, (68315), 54087 states have internal predecessors, (68315), 24972 states have call successors, (24972), 6393 states have call predecessors, (24972), 6404 states have return successors, (25575), 24387 states have call predecessors, (25575), 24971 states have call successors, (25575) [2022-11-19 08:31:50,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83928 states to 83928 states and 118862 transitions. [2022-11-19 08:31:50,205 INFO L78 Accepts]: Start accepts. Automaton has 83928 states and 118862 transitions. Word has length 377 [2022-11-19 08:31:50,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:31:50,207 INFO L495 AbstractCegarLoop]: Abstraction has 83928 states and 118862 transitions. [2022-11-19 08:31:50,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2022-11-19 08:31:50,207 INFO L276 IsEmpty]: Start isEmpty. Operand 83928 states and 118862 transitions. [2022-11-19 08:31:50,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2022-11-19 08:31:50,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:31:50,317 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:31:50,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:31:50,318 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:31:50,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:31:50,319 INFO L85 PathProgramCache]: Analyzing trace with hash 936921132, now seen corresponding path program 1 times [2022-11-19 08:31:50,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:31:50,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755448900] [2022-11-19 08:31:50,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:50,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:31:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:52,959 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2022-11-19 08:31:52,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:31:52,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755448900] [2022-11-19 08:31:52,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755448900] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:31:52,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948216623] [2022-11-19 08:31:52,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:31:52,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:31:52,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:31:52,966 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:31:52,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:31:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:31:55,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 4841 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 08:31:55,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:31:56,075 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 230 proven. 32 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-11-19 08:31:56,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:31:58,357 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2022-11-19 08:31:58,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948216623] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 08:31:58,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:31:58,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 14 [2022-11-19 08:31:58,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360933919] [2022-11-19 08:31:58,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:31:58,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:31:58,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:31:58,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:31:58,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-19 08:31:58,360 INFO L87 Difference]: Start difference. First operand 83928 states and 118862 transitions. Second operand has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 5 states have call successors, (66), 3 states have call predecessors, (66), 2 states have return successors, (65), 5 states have call predecessors, (65), 4 states have call successors, (65) [2022-11-19 08:32:02,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:32:09,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:32:25,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:32:25,078 INFO L93 Difference]: Finished difference Result 189565 states and 269019 transitions. [2022-11-19 08:32:25,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 08:32:25,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 5 states have call successors, (66), 3 states have call predecessors, (66), 2 states have return successors, (65), 5 states have call predecessors, (65), 4 states have call successors, (65) Word has length 378 [2022-11-19 08:32:25,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:32:25,958 INFO L225 Difference]: With dead ends: 189565 [2022-11-19 08:32:25,958 INFO L226 Difference]: Without dead ends: 105516 [2022-11-19 08:32:26,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 752 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-11-19 08:32:26,208 INFO L413 NwaCegarLoop]: 3071 mSDtfsCounter, 3519 mSDsluCounter, 3206 mSDsCounter, 0 mSdLazyCounter, 6286 mSolverCounterSat, 529 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3867 SdHoareTripleChecker+Valid, 6277 SdHoareTripleChecker+Invalid, 6816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 6286 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:32:26,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3867 Valid, 6277 Invalid, 6816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [529 Valid, 6286 Invalid, 1 Unknown, 0 Unchecked, 21.8s Time] [2022-11-19 08:32:26,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105516 states. [2022-11-19 08:32:30,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105516 to 103326. [2022-11-19 08:32:31,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103326 states, 64674 states have (on average 1.2962241395305687) internal successors, (83832), 66558 states have internal predecessors, (83832), 30525 states have call successors, (30525), 7831 states have call predecessors, (30525), 8126 states have return successors, (31768), 30084 states have call predecessors, (31768), 30524 states have call successors, (31768) [2022-11-19 08:32:31,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103326 states to 103326 states and 146125 transitions. [2022-11-19 08:32:31,529 INFO L78 Accepts]: Start accepts. Automaton has 103326 states and 146125 transitions. Word has length 378 [2022-11-19 08:32:31,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:32:31,530 INFO L495 AbstractCegarLoop]: Abstraction has 103326 states and 146125 transitions. [2022-11-19 08:32:31,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 5 states have call successors, (66), 3 states have call predecessors, (66), 2 states have return successors, (65), 5 states have call predecessors, (65), 4 states have call successors, (65) [2022-11-19 08:32:31,530 INFO L276 IsEmpty]: Start isEmpty. Operand 103326 states and 146125 transitions. [2022-11-19 08:32:31,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2022-11-19 08:32:31,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:32:31,669 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 7, 7, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:32:31,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 08:32:31,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:32:31,870 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:32:31,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:32:31,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1249040107, now seen corresponding path program 1 times [2022-11-19 08:32:31,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:32:31,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143015622] [2022-11-19 08:32:31,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:31,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:32:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:32:35,235 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2022-11-19 08:32:35,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:32:35,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143015622] [2022-11-19 08:32:35,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143015622] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:32:35,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732192772] [2022-11-19 08:32:35,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:32:35,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:32:35,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:32:35,239 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:32:35,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da29996c-8671-4d51-a4dc-e1d1bbae84da/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:32:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:32:37,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 5742 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 08:32:37,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:32:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 240 proven. 36 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2022-11-19 08:32:38,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:32:41,078 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2022-11-19 08:32:41,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732192772] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 08:32:41,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:32:41,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 6] total 15 [2022-11-19 08:32:41,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68909961] [2022-11-19 08:32:41,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:32:41,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:32:41,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:32:41,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:32:41,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-19 08:32:41,082 INFO L87 Difference]: Start difference. First operand 103326 states and 146125 transitions. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 5 states have call successors, (75), 3 states have call predecessors, (75), 2 states have return successors, (74), 5 states have call predecessors, (74), 4 states have call successors, (74) [2022-11-19 08:32:44,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:32:47,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:32:49,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []