./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.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_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/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_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/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_1fa8889e-f93f-478e-8a6b-52903463c634/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 e282dee958ab2234ea07036ebd12b370ba9c340bf289a9a8f423d22b133c3ff1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:33:23,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:33:23,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:33:23,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:33:23,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:33:23,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:33:23,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:33:23,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:33:23,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:33:23,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:33:23,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:33:23,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:33:23,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:33:23,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:33:23,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:33:23,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:33:23,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:33:23,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:33:23,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:33:23,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:33:23,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:33:23,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:33:23,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:33:23,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:33:23,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:33:23,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:33:23,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:33:23,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:33:23,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:33:23,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:33:23,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:33:23,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:33:23,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:33:23,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:33:23,930 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:33:23,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:33:23,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:33:23,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:33:23,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:33:23,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:33:23,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:33:23,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:33:23,971 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:33:23,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:33:23,972 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:33:23,972 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:33:23,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:33:23,973 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:33:23,974 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:33:23,974 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:33:23,974 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:33:23,974 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:33:23,975 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:33:23,976 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:33:23,976 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:33:23,976 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:33:23,976 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:33:23,977 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:33:23,977 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:33:23,977 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:33:23,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:33:23,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:33:23,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:33:23,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:33:23,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:33:23,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:33:23,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:33:23,979 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:33:23,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:33:23,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:33:23,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:33:23,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:33:23,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:33:23,981 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:33:23,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:33:23,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:33:23,982 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:33:23,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:33:23,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:33:23,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:33:23,983 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_1fa8889e-f93f-478e-8a6b-52903463c634/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e282dee958ab2234ea07036ebd12b370ba9c340bf289a9a8f423d22b133c3ff1 [2022-11-19 06:33:24,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:33:24,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:33:24,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:33:24,340 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:33:24,343 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:33:24,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i [2022-11-19 06:33:24,407 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/data/d6cea0148/8fcc6c70b1e0491fb7a5a44d9bc6b4bc/FLAG9732456d0 [2022-11-19 06:33:25,778 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:33:25,778 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i [2022-11-19 06:33:25,884 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/data/d6cea0148/8fcc6c70b1e0491fb7a5a44d9bc6b4bc/FLAG9732456d0 [2022-11-19 06:33:26,256 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/data/d6cea0148/8fcc6c70b1e0491fb7a5a44d9bc6b4bc [2022-11-19 06:33:26,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:33:26,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:33:26,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:33:26,261 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:33:26,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:33:26,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:33:26" (1/1) ... [2022-11-19 06:33:26,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8af372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:26, skipping insertion in model container [2022-11-19 06:33:26,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:33:26" (1/1) ... [2022-11-19 06:33:26,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:33:26,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:33:36,000 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_1fa8889e-f93f-478e-8a6b-52903463c634/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i[899059,899072] [2022-11-19 06:33:36,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:33:36,115 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:33:37,221 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_1fa8889e-f93f-478e-8a6b-52903463c634/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i[899059,899072] [2022-11-19 06:33:37,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:33:37,572 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:33:37,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37 WrapperNode [2022-11-19 06:33:37,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:33:37,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:33:37,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:33:37,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:33:37,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:37,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:38,932 INFO L138 Inliner]: procedures = 711, calls = 16202, calls flagged for inlining = 397, calls inlined = 350, statements flattened = 29244 [2022-11-19 06:33:38,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:33:38,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:33:38,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:33:38,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:33:38,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:38,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:39,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:39,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:39,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:39,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:40,108 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:40,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:40,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:33:40,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:33:40,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:33:40,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:33:40,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (1/1) ... [2022-11-19 06:33:40,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:33:40,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:33:40,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:33:40,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:33:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-19 06:33:40,401 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-19 06:33:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_fc_after_link_up [2022-11-19 06:33:40,402 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_fc_after_link_up [2022-11-19 06:33:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2022-11-19 06:33:40,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2022-11-19 06:33:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_collision_dist [2022-11-19 06:33:40,402 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_collision_dist [2022-11-19 06:33:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_ee_clk [2022-11-19 06:33:40,402 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_ee_clk [2022-11-19 06:33:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2022-11-19 06:33:40,403 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2022-11-19 06:33:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2022-11-19 06:33:40,403 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2022-11-19 06:33:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 06:33:40,403 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 06:33:40,403 INFO L130 BoogieDeclarations]: Found specification of procedure reg_pattern_test [2022-11-19 06:33:40,403 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_pattern_test [2022-11-19 06:33:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-19 06:33:40,404 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-19 06:33:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 06:33:40,404 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 06:33:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-19 06:33:40,404 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-19 06:33:40,404 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_eeprom [2022-11-19 06:33:40,405 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_eeprom [2022-11-19 06:33:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 06:33:40,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 06:33:40,405 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_manageability [2022-11-19 06:33:40,405 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_manageability [2022-11-19 06:33:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_in_ee_bits [2022-11-19 06:33:40,406 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_in_ee_bits [2022-11-19 06:33:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down_and_stop [2022-11-19 06:33:40,406 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down_and_stop [2022-11-19 06:33:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-19 06:33:40,406 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-19 06:33:40,406 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2022-11-19 06:33:40,407 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2022-11-19 06:33:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2022-11-19 06:33:40,407 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2022-11-19 06:33:40,407 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_unmap_and_free_tx_resource [2022-11-19 06:33:40,407 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_unmap_and_free_tx_resource [2022-11-19 06:33:40,408 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-19 06:33:40,408 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-19 06:33:40,408 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_get_info [2022-11-19 06:33:40,408 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_get_info [2022-11-19 06:33:40,408 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 06:33:40,408 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 06:33:40,409 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 06:33:40,410 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 06:33:40,410 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_do_read_eeprom [2022-11-19 06:33:40,410 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_do_read_eeprom [2022-11-19 06:33:40,411 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_rctl [2022-11-19 06:33:40,411 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_rctl [2022-11-19 06:33:40,411 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-19 06:33:40,411 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-19 06:33:40,411 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set [2022-11-19 06:33:40,411 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set [2022-11-19 06:33:40,411 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2022-11-19 06:33:40,412 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2022-11-19 06:33:40,412 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 06:33:40,412 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 06:33:40,412 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset [2022-11-19 06:33:40,413 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset [2022-11-19 06:33:40,413 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2022-11-19 06:33:40,413 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2022-11-19 06:33:40,413 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_eeprom_params [2022-11-19 06:33:40,413 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_eeprom_params [2022-11-19 06:33:40,413 INFO L130 BoogieDeclarations]: Found specification of procedure phys_to_virt [2022-11-19 06:33:40,413 INFO L138 BoogieDeclarations]: Found implementation of procedure phys_to_virt [2022-11-19 06:33:40,414 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 06:33:40,414 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 06:33:40,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 06:33:40,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 06:33:40,415 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 06:33:40,415 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 06:33:40,415 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-19 06:33:40,415 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-19 06:33:40,416 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 06:33:40,416 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 06:33:40,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 06:33:40,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 06:33:40,417 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 06:33:40,417 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 06:33:40,417 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-19 06:33:40,417 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-19 06:33:40,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:33:40,417 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-19 06:33:40,418 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-19 06:33:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg [2022-11-19 06:33:40,418 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg [2022-11-19 06:33:40,419 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_speed_and_duplex [2022-11-19 06:33:40,420 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_speed_and_duplex [2022-11-19 06:33:40,420 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_standby_eeprom [2022-11-19 06:33:40,420 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_standby_eeprom [2022-11-19 06:33:40,420 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_bit [2022-11-19 06:33:40,420 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_bit [2022-11-19 06:33:40,420 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-19 06:33:40,420 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-19 06:33:40,421 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure_rx [2022-11-19 06:33:40,421 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure_rx [2022-11-19 06:33:40,421 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 06:33:40,421 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 06:33:40,421 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_hw_dev [2022-11-19 06:33:40,421 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_hw_dev [2022-11-19 06:33:40,422 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_stats [2022-11-19 06:33:40,422 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_stats [2022-11-19 06:33:40,422 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_validate_option [2022-11-19 06:33:40,422 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_validate_option [2022-11-19 06:33:40,423 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 06:33:40,423 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 06:33:40,426 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 06:33:40,426 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 06:33:40,426 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link [2022-11-19 06:33:40,427 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link [2022-11-19 06:33:40,427 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_irq [2022-11-19 06:33:40,428 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_irq [2022-11-19 06:33:40,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 06:33:40,429 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2022-11-19 06:33:40,429 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2022-11-19 06:33:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_link [2022-11-19 06:33:40,435 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_link [2022-11-19 06:33:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_vlan_mode [2022-11-19 06:33:40,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_vlan_mode [2022-11-19 06:33:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset [2022-11-19 06:33:40,435 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset [2022-11-19 06:33:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 06:33:40,436 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 06:33:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_dsp_after_link_change [2022-11-19 06:33:40,436 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_dsp_after_link_change [2022-11-19 06:33:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 06:33:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 06:33:40,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 06:33:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_maybe_stop_tx [2022-11-19 06:33:40,436 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_maybe_stop_tx [2022-11-19 06:33:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:33:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 06:33:40,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 06:33:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shutdown [2022-11-19 06:33:40,437 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shutdown [2022-11-19 06:33:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2022-11-19 06:33:40,437 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2022-11-19 06:33:40,437 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_used [2022-11-19 06:33:40,438 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_used [2022-11-19 06:33:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 06:33:40,438 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 06:33:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_disable_receiver [2022-11-19 06:33:40,438 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_disable_receiver [2022-11-19 06:33:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_kill_vid [2022-11-19 06:33:40,438 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_kill_vid [2022-11-19 06:33:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-19 06:33:40,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-19 06:33:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_force_mac_fc [2022-11-19 06:33:40,439 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_force_mac_fc [2022-11-19 06:33:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-19 06:33:40,439 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-19 06:33:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 06:33:40,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 06:33:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-11-19 06:33:40,439 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-11-19 06:33:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 06:33:40,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 06:33:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_leave_82542_rst [2022-11-19 06:33:40,440 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_leave_82542_rst [2022-11-19 06:33:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_has_link [2022-11-19 06:33:40,440 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_has_link [2022-11-19 06:33:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-19 06:33:40,440 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-19 06:33:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 06:33:40,440 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 06:33:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2022-11-19 06:33:40,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2022-11-19 06:33:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_tx_resources [2022-11-19 06:33:40,441 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_tx_resources [2022-11-19 06:33:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2022-11-19 06:33:40,441 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2022-11-19 06:33:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure pci_wake_from_d3 [2022-11-19 06:33:40,441 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_wake_from_d3 [2022-11-19 06:33:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure reg_set_and_check [2022-11-19 06:33:40,442 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_set_and_check [2022-11-19 06:33:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:33:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-19 06:33:40,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-19 06:33:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 06:33:40,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 06:33:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_netpoll [2022-11-19 06:33:40,442 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_netpoll [2022-11-19 06:33:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-19 06:33:40,443 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-19 06:33:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:33:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-19 06:33:40,443 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-19 06:33:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 06:33:40,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 06:33:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 06:33:40,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 06:33:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:33:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_rx_mode [2022-11-19 06:33:40,444 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_rx_mode [2022-11-19 06:33:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 06:33:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-11-19 06:33:40,444 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-11-19 06:33:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 06:33:40,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 06:33:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_open [2022-11-19 06:33:40,445 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_open [2022-11-19 06:33:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2022-11-19 06:33:40,445 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2022-11-19 06:33:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_hw_reset [2022-11-19 06:33:40,445 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_hw_reset [2022-11-19 06:33:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_vfta [2022-11-19 06:33:40,445 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_vfta [2022-11-19 06:33:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-19 06:33:40,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-19 06:33:40,446 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_remove [2022-11-19 06:33:40,446 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_remove [2022-11-19 06:33:40,446 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_ee_bits [2022-11-19 06:33:40,446 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_ee_bits [2022-11-19 06:33:40,446 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure [2022-11-19 06:33:40,446 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure [2022-11-19 06:33:40,447 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-19 06:33:40,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-19 06:33:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-19 06:33:40,448 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-19 06:33:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 06:33:40,448 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 06:33:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_cable_length [2022-11-19 06:33:40,448 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_cable_length [2022-11-19 06:33:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-19 06:33:40,448 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-19 06:33:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_ee_clk [2022-11-19 06:33:40,449 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_ee_clk [2022-11-19 06:33:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_rx_resources [2022-11-19 06:33:40,449 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_rx_resources [2022-11-19 06:33:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-19 06:33:40,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-19 06:33:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_add_vid [2022-11-19 06:33:40,450 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_add_vid [2022-11-19 06:33:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure device_can_wakeup [2022-11-19 06:33:40,454 INFO L138 BoogieDeclarations]: Found implementation of procedure device_can_wakeup [2022-11-19 06:33:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2022-11-19 06:33:40,454 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2022-11-19 06:33:40,454 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2022-11-19 06:33:40,454 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2022-11-19 06:33:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_write [2022-11-19 06:33:40,455 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_write [2022-11-19 06:33:40,455 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-11-19 06:33:40,456 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-11-19 06:33:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_resume [2022-11-19 06:33:40,456 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_resume [2022-11-19 06:33:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-19 06:33:40,456 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-19 06:33:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 06:33:40,456 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 06:33:40,456 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom [2022-11-19 06:33:40,456 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom [2022-11-19 06:33:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_enter_82542_rst [2022-11-19 06:33:40,457 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_enter_82542_rst [2022-11-19 06:33:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_acquire_eeprom [2022-11-19 06:33:40,457 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_acquire_eeprom [2022-11-19 06:33:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-19 06:33:40,457 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-19 06:33:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:33:40,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:33:40,457 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_down_phy [2022-11-19 06:33:40,458 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_down_phy [2022-11-19 06:33:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-19 06:33:40,458 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-19 06:33:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure pci_select_bars [2022-11-19 06:33:40,458 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_select_bars [2022-11-19 06:33:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_spi_eeprom_ready [2022-11-19 06:33:40,458 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_spi_eeprom_ready [2022-11-19 06:33:40,458 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_clear_mwi [2022-11-19 06:33:40,458 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_clear_mwi [2022-11-19 06:33:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 06:33:40,459 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 06:33:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_up_phy [2022-11-19 06:33:40,459 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_up_phy [2022-11-19 06:33:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 06:33:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 06:33:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 06:33:40,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 06:33:40,459 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2022-11-19 06:33:40,460 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2022-11-19 06:33:40,460 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 06:33:40,460 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 06:33:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-19 06:33:40,460 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-19 06:33:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg_ex [2022-11-19 06:33:40,460 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg_ex [2022-11-19 06:33:40,460 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 06:33:40,460 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 06:33:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-19 06:33:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-19 06:33:40,461 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-19 06:33:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-19 06:33:40,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-19 06:33:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_resume [2022-11-19 06:33:40,461 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_resume [2022-11-19 06:33:40,461 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2022-11-19 06:33:40,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2022-11-19 06:33:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-19 06:33:40,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-19 06:33:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_polarity [2022-11-19 06:33:40,462 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_polarity [2022-11-19 06:33:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-19 06:33:40,462 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-19 06:33:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 06:33:40,462 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 06:33:40,462 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-19 06:33:40,463 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-19 06:33:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_mdi_clk [2022-11-19 06:33:40,463 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_mdi_clk [2022-11-19 06:33:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_mac_to_phy [2022-11-19 06:33:40,463 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_mac_to_phy [2022-11-19 06:33:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom_len [2022-11-19 06:33:40,463 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom_len [2022-11-19 06:33:40,463 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 06:33:40,463 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 06:33:40,464 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2022-11-19 06:33:40,464 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2022-11-19 06:33:40,464 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_rx_resources [2022-11-19 06:33:40,464 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_rx_resources [2022-11-19 06:33:40,464 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2022-11-19 06:33:40,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2022-11-19 06:33:40,464 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-19 06:33:40,464 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-19 06:33:40,464 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_close [2022-11-19 06:33:40,464 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_close [2022-11-19 06:33:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset_clk_and_crs [2022-11-19 06:33:40,465 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset_clk_and_crs [2022-11-19 06:33:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-19 06:33:40,465 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-19 06:33:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 06:33:40,465 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 06:33:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-19 06:33:40,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-19 06:33:40,465 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-19 06:33:40,465 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-19 06:33:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:33:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 06:33:40,466 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 06:33:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-19 06:33:40,466 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-19 06:33:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 06:33:40,466 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 06:33:40,466 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_regs_len [2022-11-19 06:33:40,466 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_regs_len [2022-11-19 06:33:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:33:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2022-11-19 06:33:40,467 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2022-11-19 06:33:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-19 06:33:40,467 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-19 06:33:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2022-11-19 06:33:40,467 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2022-11-19 06:33:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_tx_resources [2022-11-19 06:33:40,467 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_tx_resources [2022-11-19 06:33:40,467 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_setup_autoneg [2022-11-19 06:33:40,468 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_setup_autoneg [2022-11-19 06:33:40,468 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_mng_vlan [2022-11-19 06:33:40,468 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_mng_vlan [2022-11-19 06:33:40,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:33:40,468 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_media_type [2022-11-19 06:33:40,468 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_media_type [2022-11-19 06:33:40,468 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_eeprom [2022-11-19 06:33:40,468 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_eeprom [2022-11-19 06:33:40,468 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_filter_on_off [2022-11-19 06:33:40,469 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_filter_on_off [2022-11-19 06:33:40,469 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-19 06:33:40,469 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-19 06:33:40,469 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_nway_reset [2022-11-19 06:33:40,469 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_nway_reset [2022-11-19 06:33:40,469 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-19 06:33:40,469 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-19 06:33:40,469 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_phy_loopback [2022-11-19 06:33:40,469 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_phy_loopback [2022-11-19 06:33:40,469 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 06:33:40,470 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 06:33:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-19 06:33:40,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-19 06:33:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 06:33:40,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 06:33:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-19 06:33:40,470 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-19 06:33:40,470 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_all_rx_rings [2022-11-19 06:33:40,470 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_all_rx_rings [2022-11-19 06:33:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-19 06:33:40,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-19 06:33:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_enable [2022-11-19 06:33:40,471 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_enable [2022-11-19 06:33:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_up [2022-11-19 06:33:40,471 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_up [2022-11-19 06:33:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_tx_timeout [2022-11-19 06:33:40,471 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_tx_timeout [2022-11-19 06:33:40,471 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reinit_locked [2022-11-19 06:33:40,471 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reinit_locked [2022-11-19 06:33:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2022-11-19 06:33:40,472 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2022-11-19 06:33:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_phy_reg [2022-11-19 06:33:40,472 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_phy_reg [2022-11-19 06:33:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_rx_resources [2022-11-19 06:33:40,472 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_rx_resources [2022-11-19 06:33:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_mdi_clk [2022-11-19 06:33:40,472 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_mdi_clk [2022-11-19 06:33:40,472 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-19 06:33:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-19 06:33:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-19 06:33:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-19 06:33:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 06:33:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 06:33:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_copper_link_rtl_setup [2022-11-19 06:33:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_copper_link_rtl_setup [2022-11-19 06:33:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2022-11-19 06:33:40,473 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2022-11-19 06:33:40,473 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_eeprom [2022-11-19 06:33:40,474 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_eeprom [2022-11-19 06:33:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_desc_rings [2022-11-19 06:33:40,474 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_desc_rings [2022-11-19 06:33:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_set_mwi [2022-11-19 06:33:40,474 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_set_mwi [2022-11-19 06:33:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2022-11-19 06:33:40,474 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2022-11-19 06:33:40,474 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 06:33:40,474 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 06:33:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_polarity_reversal_workaround [2022-11-19 06:33:40,475 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_polarity_reversal_workaround [2022-11-19 06:33:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-19 06:33:40,475 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-19 06:33:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-11-19 06:33:40,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-11-19 06:33:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 06:33:40,475 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 06:33:40,475 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_link_test [2022-11-19 06:33:40,476 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_link_test [2022-11-19 06:33:40,476 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_mdi_bits [2022-11-19 06:33:40,476 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_mdi_bits [2022-11-19 06:33:40,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:33:40,476 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_64k_bound [2022-11-19 06:33:40,476 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_64k_bound [2022-11-19 06:33:40,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 06:33:40,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 06:33:40,476 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_spd_dplx [2022-11-19 06:33:40,476 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_spd_dplx [2022-11-19 06:33:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2022-11-19 06:33:40,477 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2022-11-19 06:33:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down [2022-11-19 06:33:40,477 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down [2022-11-19 06:33:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 06:33:40,477 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 06:33:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_init_script [2022-11-19 06:33:40,477 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_init_script [2022-11-19 06:33:40,477 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-19 06:33:40,477 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-19 06:33:40,478 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-11-19 06:33:40,478 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-11-19 06:33:40,478 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_request_irq [2022-11-19 06:33:40,478 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_request_irq [2022-11-19 06:33:40,478 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-19 06:33:40,478 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-19 06:33:40,478 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_eeprom [2022-11-19 06:33:40,478 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_eeprom [2022-11-19 06:33:40,478 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw [2022-11-19 06:33:40,479 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw [2022-11-19 06:33:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_disable [2022-11-19 06:33:40,479 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_disable [2022-11-19 06:33:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2022-11-19 06:33:40,479 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2022-11-19 06:33:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-19 06:33:40,479 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-19 06:33:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_10 [2022-11-19 06:33:40,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_10 [2022-11-19 06:33:40,479 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_tx_ring [2022-11-19 06:33:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_tx_ring [2022-11-19 06:33:40,480 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_shutdown [2022-11-19 06:33:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_shutdown [2022-11-19 06:33:40,480 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_tx_resources [2022-11-19 06:33:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_tx_resources [2022-11-19 06:33:40,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 06:33:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 06:33:40,480 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-19 06:33:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-19 06:33:40,480 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 06:33:40,484 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 06:33:40,484 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-19 06:33:40,484 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-19 06:33:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_manageability [2022-11-19 06:33:40,485 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_manageability [2022-11-19 06:33:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2022-11-19 06:33:40,485 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2022-11-19 06:33:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-19 06:33:40,485 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-19 06:33:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_wol_exclusion [2022-11-19 06:33:40,485 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_wol_exclusion [2022-11-19 06:33:40,485 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 06:33:40,485 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 06:33:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-19 06:33:40,486 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-19 06:33:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_e1000_exit_module_13_2 [2022-11-19 06:33:40,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_e1000_exit_module_13_2 [2022-11-19 06:33:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-19 06:33:40,486 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-19 06:33:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-19 06:33:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:33:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-19 06:33:40,486 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-19 06:33:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_rx_ring [2022-11-19 06:33:40,487 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_rx_ring [2022-11-19 06:33:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 06:33:40,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 06:33:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-19 06:33:43,001 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:33:43,013 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:33:44,502 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 06:34:45,436 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 06:34:46,020 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:34:58,202 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:34:58,203 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-19 06:34:58,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:34:58 BoogieIcfgContainer [2022-11-19 06:34:58,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:34:58,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:34:58,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:34:58,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:34:58,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:33:26" (1/3) ... [2022-11-19 06:34:58,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230cb4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:34:58, skipping insertion in model container [2022-11-19 06:34:58,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:37" (2/3) ... [2022-11-19 06:34:58,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230cb4a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:34:58, skipping insertion in model container [2022-11-19 06:34:58,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:34:58" (3/3) ... [2022-11-19 06:34:58,227 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i [2022-11-19 06:34:58,252 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:34:58,252 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:34:58,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:34:58,503 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;@5e4a7aad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:34:58,503 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:34:58,536 INFO L276 IsEmpty]: Start isEmpty. Operand has 6719 states, 4306 states have (on average 1.3420808174640038) internal successors, (5779), 4398 states have internal predecessors, (5779), 2170 states have call successors, (2170), 245 states have call predecessors, (2170), 244 states have return successors, (2164), 2156 states have call predecessors, (2164), 2164 states have call successors, (2164) [2022-11-19 06:34:58,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-11-19 06:34:58,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:58,583 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:34:58,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:34:58,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:58,591 INFO L85 PathProgramCache]: Analyzing trace with hash 894688110, now seen corresponding path program 1 times [2022-11-19 06:34:58,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:58,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514204685] [2022-11-19 06:34:58,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:58,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2022-11-19 06:35:00,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:35:00,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514204685] [2022-11-19 06:35:00,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514204685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:35:00,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:35:00,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:35:00,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785266427] [2022-11-19 06:35:00,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:35:00,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:35:00,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:35:01,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:35:01,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:35:01,025 INFO L87 Difference]: Start difference. First operand has 6719 states, 4306 states have (on average 1.3420808174640038) internal successors, (5779), 4398 states have internal predecessors, (5779), 2170 states have call successors, (2170), 245 states have call predecessors, (2170), 244 states have return successors, (2164), 2156 states have call predecessors, (2164), 2164 states have call successors, (2164) Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-19 06:35:10,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:35:16,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:35:19,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:35:22,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:35:26,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:35:27,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:35:27,201 INFO L93 Difference]: Finished difference Result 19560 states and 29501 transitions. [2022-11-19 06:35:27,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:35:27,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 250 [2022-11-19 06:35:27,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:35:27,364 INFO L225 Difference]: With dead ends: 19560 [2022-11-19 06:35:27,364 INFO L226 Difference]: Without dead ends: 12878 [2022-11-19 06:35:27,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:35:27,434 INFO L413 NwaCegarLoop]: 11260 mSDtfsCounter, 9287 mSDsluCounter, 9167 mSDsCounter, 0 mSdLazyCounter, 1794 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9288 SdHoareTripleChecker+Valid, 20427 SdHoareTripleChecker+Invalid, 1805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1794 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:35:27,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9288 Valid, 20427 Invalid, 1805 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1794 Invalid, 4 Unknown, 0 Unchecked, 25.2s Time] [2022-11-19 06:35:27,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12878 states. [2022-11-19 06:35:28,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12878 to 12869. [2022-11-19 06:35:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12869 states, 8209 states have (on average 1.3363381654281885) internal successors, (10970), 8389 states have internal predecessors, (10970), 4180 states have call successors, (4180), 480 states have call predecessors, (4180), 479 states have return successors, (4178), 4160 states have call predecessors, (4178), 4177 states have call successors, (4178) [2022-11-19 06:35:28,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12869 states to 12869 states and 19328 transitions. [2022-11-19 06:35:28,873 INFO L78 Accepts]: Start accepts. Automaton has 12869 states and 19328 transitions. Word has length 250 [2022-11-19 06:35:28,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:35:28,880 INFO L495 AbstractCegarLoop]: Abstraction has 12869 states and 19328 transitions. [2022-11-19 06:35:28,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-19 06:35:28,881 INFO L276 IsEmpty]: Start isEmpty. Operand 12869 states and 19328 transitions. [2022-11-19 06:35:28,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-11-19 06:35:28,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:35:28,902 INFO L195 NwaCegarLoop]: trace histogram [27, 23, 23, 23, 23, 23, 23, 4, 4, 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] [2022-11-19 06:35:28,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:35:28,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:35:28,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:35:28,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1970343713, now seen corresponding path program 1 times [2022-11-19 06:35:28,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:35:28,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85001431] [2022-11-19 06:35:28,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:35:28,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:35:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:31,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2247 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2247 trivial. 0 not checked. [2022-11-19 06:35:31,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:35:31,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85001431] [2022-11-19 06:35:31,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85001431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:35:31,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:35:31,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:35:31,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278515126] [2022-11-19 06:35:31,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:35:31,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:35:31,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:35:31,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:35:31,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:35:31,780 INFO L87 Difference]: Start difference. First operand 12869 states and 19328 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 06:35:41,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:35:48,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:35:51,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:35:56,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:35:58,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:36:01,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:36:01,722 INFO L93 Difference]: Finished difference Result 19098 states and 28665 transitions. [2022-11-19 06:36:01,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:36:01,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 292 [2022-11-19 06:36:01,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:36:01,900 INFO L225 Difference]: With dead ends: 19098 [2022-11-19 06:36:01,900 INFO L226 Difference]: Without dead ends: 19082 [2022-11-19 06:36:01,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:36:01,928 INFO L413 NwaCegarLoop]: 11234 mSDtfsCounter, 9322 mSDsluCounter, 20348 mSDsCounter, 0 mSdLazyCounter, 2672 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9323 SdHoareTripleChecker+Valid, 31582 SdHoareTripleChecker+Invalid, 2676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2672 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:36:01,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9323 Valid, 31582 Invalid, 2676 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2672 Invalid, 4 Unknown, 0 Unchecked, 29.1s Time] [2022-11-19 06:36:01,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19082 states. [2022-11-19 06:36:03,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19082 to 19074. [2022-11-19 06:36:03,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19074 states, 12145 states have (on average 1.3347879785920131) internal successors, (16211), 12413 states have internal predecessors, (16211), 6210 states have call successors, (6210), 719 states have call predecessors, (6210), 718 states have return successors, (6209), 6182 states have call predecessors, (6209), 6207 states have call successors, (6209) [2022-11-19 06:36:03,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19074 states to 19074 states and 28630 transitions. [2022-11-19 06:36:03,628 INFO L78 Accepts]: Start accepts. Automaton has 19074 states and 28630 transitions. Word has length 292 [2022-11-19 06:36:03,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:36:03,631 INFO L495 AbstractCegarLoop]: Abstraction has 19074 states and 28630 transitions. [2022-11-19 06:36:03,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 06:36:03,631 INFO L276 IsEmpty]: Start isEmpty. Operand 19074 states and 28630 transitions. [2022-11-19 06:36:03,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-11-19 06:36:03,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:36:03,720 INFO L195 NwaCegarLoop]: trace histogram [29, 25, 25, 25, 25, 25, 25, 5, 5, 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] [2022-11-19 06:36:03,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:36:03,722 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:36:03,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:36:03,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1302343921, now seen corresponding path program 1 times [2022-11-19 06:36:03,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:36:03,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456594317] [2022-11-19 06:36:03,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:36:03,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:36:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:36:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2647 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2644 trivial. 0 not checked. [2022-11-19 06:36:05,678 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:36:05,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456594317] [2022-11-19 06:36:05,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456594317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:36:05,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:36:05,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:36:05,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575630190] [2022-11-19 06:36:05,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:36:05,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:36:05,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:36:05,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:36:05,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:36:05,681 INFO L87 Difference]: Start difference. First operand 19074 states and 28630 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-11-19 06:36:16,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:36:21,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:36:24,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:36:28,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:36:30,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:36:30,871 INFO L93 Difference]: Finished difference Result 48991 states and 73556 transitions. [2022-11-19 06:36:30,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:36:30,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 410 [2022-11-19 06:36:30,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:36:31,223 INFO L225 Difference]: With dead ends: 48991 [2022-11-19 06:36:31,224 INFO L226 Difference]: Without dead ends: 29964 [2022-11-19 06:36:31,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:36:31,378 INFO L413 NwaCegarLoop]: 11284 mSDtfsCounter, 8532 mSDsluCounter, 9139 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8533 SdHoareTripleChecker+Valid, 20423 SdHoareTripleChecker+Invalid, 1905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:36:31,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8533 Valid, 20423 Invalid, 1905 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 1883 Invalid, 3 Unknown, 0 Unchecked, 24.0s Time] [2022-11-19 06:36:31,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29964 states. [2022-11-19 06:36:33,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29964 to 29954. [2022-11-19 06:36:33,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29954 states, 19139 states have (on average 1.3326715084382674) internal successors, (25506), 19549 states have internal predecessors, (25506), 9716 states have call successors, (9716), 1100 states have call predecessors, (9716), 1098 states have return successors, (9717), 9666 states have call predecessors, (9717), 9713 states have call successors, (9717) [2022-11-19 06:36:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29954 states to 29954 states and 44939 transitions. [2022-11-19 06:36:34,166 INFO L78 Accepts]: Start accepts. Automaton has 29954 states and 44939 transitions. Word has length 410 [2022-11-19 06:36:34,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:36:34,167 INFO L495 AbstractCegarLoop]: Abstraction has 29954 states and 44939 transitions. [2022-11-19 06:36:34,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-11-19 06:36:34,168 INFO L276 IsEmpty]: Start isEmpty. Operand 29954 states and 44939 transitions. [2022-11-19 06:36:34,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-11-19 06:36:34,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:36:34,297 INFO L195 NwaCegarLoop]: trace histogram [32, 25, 25, 25, 25, 25, 25, 9, 9, 3, 3, 3, 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] [2022-11-19 06:36:34,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:36:34,297 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:36:34,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:36:34,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1177473315, now seen corresponding path program 1 times [2022-11-19 06:36:34,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:36:34,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36009804] [2022-11-19 06:36:34,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:36:34,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:36:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:36:36,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2921 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2906 trivial. 0 not checked. [2022-11-19 06:36:36,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:36:36,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36009804] [2022-11-19 06:36:36,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36009804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:36:36,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:36:36,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:36:36,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639950937] [2022-11-19 06:36:36,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:36:36,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:36:36,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:36:36,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:36:36,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:36:36,310 INFO L87 Difference]: Start difference. First operand 29954 states and 44939 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2022-11-19 06:36:40,210 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 06:36:53,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:36:55,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:37:03,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:37:05,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:37:06,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:37:07,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:37:07,903 INFO L93 Difference]: Finished difference Result 65603 states and 98439 transitions. [2022-11-19 06:37:07,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:37:07,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 457 [2022-11-19 06:37:07,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:37:08,175 INFO L225 Difference]: With dead ends: 65603 [2022-11-19 06:37:08,175 INFO L226 Difference]: Without dead ends: 41349 [2022-11-19 06:37:08,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:37:08,526 INFO L413 NwaCegarLoop]: 16966 mSDtfsCounter, 8526 mSDsluCounter, 9137 mSDsCounter, 0 mSdLazyCounter, 2567 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8527 SdHoareTripleChecker+Valid, 26103 SdHoareTripleChecker+Invalid, 2584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2567 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:37:08,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8527 Valid, 26103 Invalid, 2584 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 2567 Invalid, 2 Unknown, 0 Unchecked, 29.9s Time] [2022-11-19 06:37:08,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41349 states. [2022-11-19 06:37:11,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41349 to 41339. [2022-11-19 06:37:11,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41339 states, 26420 states have (on average 1.3320211960635882) internal successors, (35192), 26985 states have internal predecessors, (35192), 13408 states have call successors, (13408), 1513 states have call predecessors, (13408), 1510 states have return successors, (13411), 13336 states have call predecessors, (13411), 13405 states have call successors, (13411) [2022-11-19 06:37:12,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41339 states to 41339 states and 62011 transitions. [2022-11-19 06:37:12,067 INFO L78 Accepts]: Start accepts. Automaton has 41339 states and 62011 transitions. Word has length 457 [2022-11-19 06:37:12,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:37:12,070 INFO L495 AbstractCegarLoop]: Abstraction has 41339 states and 62011 transitions. [2022-11-19 06:37:12,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2022-11-19 06:37:12,070 INFO L276 IsEmpty]: Start isEmpty. Operand 41339 states and 62011 transitions. [2022-11-19 06:37:12,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2022-11-19 06:37:12,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:37:12,252 INFO L195 NwaCegarLoop]: trace histogram [34, 25, 25, 25, 25, 25, 25, 13, 13, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:37:12,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:37:12,252 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:37:12,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:37:12,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1385390355, now seen corresponding path program 1 times [2022-11-19 06:37:12,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:37:12,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308504275] [2022-11-19 06:37:12,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:37:12,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:37:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:37:15,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3217 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3217 trivial. 0 not checked. [2022-11-19 06:37:15,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:37:15,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308504275] [2022-11-19 06:37:15,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308504275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:37:15,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:37:15,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:37:15,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46152696] [2022-11-19 06:37:15,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:37:15,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:37:15,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:37:15,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:37:15,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:37:15,952 INFO L87 Difference]: Start difference. First operand 41339 states and 62011 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2022-11-19 06:37:22,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:37:28,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:37:30,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:37:33,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:37:37,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:37:40,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:37:48,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:37:48,724 INFO L93 Difference]: Finished difference Result 59207 states and 88820 transitions. [2022-11-19 06:37:48,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:37:48,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) Word has length 519 [2022-11-19 06:37:48,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:37:49,159 INFO L225 Difference]: With dead ends: 59207 [2022-11-19 06:37:49,159 INFO L226 Difference]: Without dead ends: 59177 [2022-11-19 06:37:49,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:37:49,198 INFO L413 NwaCegarLoop]: 11277 mSDtfsCounter, 9615 mSDsluCounter, 20391 mSDsCounter, 0 mSdLazyCounter, 2660 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9616 SdHoareTripleChecker+Valid, 31668 SdHoareTripleChecker+Invalid, 2664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2660 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:37:49,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9616 Valid, 31668 Invalid, 2664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2660 Invalid, 4 Unknown, 0 Unchecked, 30.9s Time] [2022-11-19 06:37:49,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59177 states. [2022-11-19 06:37:52,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59177 to 59140. [2022-11-19 06:37:53,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59140 states, 37809 states have (on average 1.3323547303552064) internal successors, (50375), 38615 states have internal predecessors, (50375), 19168 states have call successors, (19168), 2165 states have call predecessors, (19168), 2162 states have return successors, (19174), 19069 states have call predecessors, (19174), 19165 states have call successors, (19174) [2022-11-19 06:37:53,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59140 states to 59140 states and 88717 transitions. [2022-11-19 06:37:53,530 INFO L78 Accepts]: Start accepts. Automaton has 59140 states and 88717 transitions. Word has length 519 [2022-11-19 06:37:53,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:37:53,533 INFO L495 AbstractCegarLoop]: Abstraction has 59140 states and 88717 transitions. [2022-11-19 06:37:53,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2022-11-19 06:37:53,533 INFO L276 IsEmpty]: Start isEmpty. Operand 59140 states and 88717 transitions. [2022-11-19 06:37:54,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2022-11-19 06:37:54,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:37:54,371 INFO L195 NwaCegarLoop]: trace histogram [34, 25, 25, 25, 25, 25, 25, 14, 13, 13, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:37:54,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:37:54,371 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:37:54,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:37:54,372 INFO L85 PathProgramCache]: Analyzing trace with hash 258069113, now seen corresponding path program 1 times [2022-11-19 06:37:54,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:37:54,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7103072] [2022-11-19 06:37:54,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:37:54,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:37:55,346 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:37:55,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127485205] [2022-11-19 06:37:55,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:37:55,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:37:55,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:37:55,354 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:37:55,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:38:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:02,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 23034 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:38:02,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3507 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 3189 trivial. 0 not checked. [2022-11-19 06:38:02,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:38:02,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:02,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7103072] [2022-11-19 06:38:02,614 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:38:02,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127485205] [2022-11-19 06:38:02,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127485205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:02,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:02,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:38:02,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436886085] [2022-11-19 06:38:02,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:02,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:38:02,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:02,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:38:02,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:02,618 INFO L87 Difference]: Start difference. First operand 59140 states and 88717 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 3 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (127), 3 states have call predecessors, (127), 3 states have call successors, (127) [2022-11-19 06:38:04,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:38:07,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:38:13,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:38:18,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:38:19,869 WARN L539 Checker$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 06:38:23,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:38:30,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:38:30,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:30,765 INFO L93 Difference]: Finished difference Result 81160 states and 122136 transitions. [2022-11-19 06:38:30,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:38:30,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 3 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (127), 3 states have call predecessors, (127), 3 states have call successors, (127) Word has length 881 [2022-11-19 06:38:30,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:31,194 INFO L225 Difference]: With dead ends: 81160 [2022-11-19 06:38:31,194 INFO L226 Difference]: Without dead ends: 63106 [2022-11-19 06:38:31,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 879 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:31,282 INFO L413 NwaCegarLoop]: 11193 mSDtfsCounter, 1229 mSDsluCounter, 9696 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1746 SdHoareTripleChecker+Valid, 20889 SdHoareTripleChecker+Invalid, 2045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:31,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1746 Valid, 20889 Invalid, 2045 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2040 Invalid, 4 Unknown, 0 Unchecked, 26.1s Time] [2022-11-19 06:38:31,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63106 states. [2022-11-19 06:38:35,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63106 to 59145. [2022-11-19 06:38:35,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59145 states, 37813 states have (on average 1.3323460185650438) internal successors, (50380), 38619 states have internal predecessors, (50380), 19169 states have call successors, (19169), 2165 states have call predecessors, (19169), 2162 states have return successors, (19175), 19070 states have call predecessors, (19175), 19166 states have call successors, (19175) [2022-11-19 06:38:35,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59145 states to 59145 states and 88724 transitions. [2022-11-19 06:38:35,887 INFO L78 Accepts]: Start accepts. Automaton has 59145 states and 88724 transitions. Word has length 881 [2022-11-19 06:38:35,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:35,889 INFO L495 AbstractCegarLoop]: Abstraction has 59145 states and 88724 transitions. [2022-11-19 06:38:35,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 3 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (127), 3 states have call predecessors, (127), 3 states have call successors, (127) [2022-11-19 06:38:35,890 INFO L276 IsEmpty]: Start isEmpty. Operand 59145 states and 88724 transitions. [2022-11-19 06:38:36,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2022-11-19 06:38:36,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:36,396 INFO L195 NwaCegarLoop]: trace histogram [34, 25, 25, 25, 25, 25, 25, 17, 13, 13, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:38:36,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 06:38:36,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:36,603 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:36,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:36,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1582529781, now seen corresponding path program 1 times [2022-11-19 06:38:36,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:36,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994328455] [2022-11-19 06:38:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:36,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:37,766 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:38:37,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687677853] [2022-11-19 06:38:37,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:37,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:37,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:37,768 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:38:37,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:38:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:45,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 23510 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:38:45,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:46,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3635 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 3389 trivial. 0 not checked. [2022-11-19 06:38:46,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:38:46,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:46,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994328455] [2022-11-19 06:38:46,058 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:38:46,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687677853] [2022-11-19 06:38:46,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687677853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:46,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:46,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:38:46,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396370846] [2022-11-19 06:38:46,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:46,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:38:46,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:46,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:38:46,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:38:46,062 INFO L87 Difference]: Start difference. First operand 59145 states and 88724 transitions. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 2 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) [2022-11-19 06:38:48,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:39:02,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:39:03,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:39:06,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:39:10,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:39:21,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:39:23,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:39:26,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:39:28,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:39:29,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:39:30,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:39:35,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:39:35,668 INFO L93 Difference]: Finished difference Result 122508 states and 186321 transitions. [2022-11-19 06:39:35,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:39:35,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 2 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) Word has length 925 [2022-11-19 06:39:35,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:39:36,089 INFO L225 Difference]: With dead ends: 122508 [2022-11-19 06:39:36,089 INFO L226 Difference]: Without dead ends: 86648 [2022-11-19 06:39:36,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 926 GetRequests, 923 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:39:36,257 INFO L413 NwaCegarLoop]: 13703 mSDtfsCounter, 3804 mSDsluCounter, 23190 mSDsCounter, 0 mSdLazyCounter, 3681 mSolverCounterSat, 1017 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4858 SdHoareTripleChecker+Valid, 36893 SdHoareTripleChecker+Invalid, 4703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1017 IncrementalHoareTripleChecker+Valid, 3681 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:39:36,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4858 Valid, 36893 Invalid, 4703 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1017 Valid, 3681 Invalid, 5 Unknown, 0 Unchecked, 45.8s Time] [2022-11-19 06:39:36,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86648 states. [2022-11-19 06:39:42,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86648 to 59149. [2022-11-19 06:39:42,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59149 states, 37817 states have (on average 1.3323108654837772) internal successors, (50384), 38623 states have internal predecessors, (50384), 19169 states have call successors, (19169), 2165 states have call predecessors, (19169), 2162 states have return successors, (19175), 19070 states have call predecessors, (19175), 19166 states have call successors, (19175) [2022-11-19 06:39:42,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59149 states to 59149 states and 88728 transitions. [2022-11-19 06:39:42,597 INFO L78 Accepts]: Start accepts. Automaton has 59149 states and 88728 transitions. Word has length 925 [2022-11-19 06:39:42,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:39:42,598 INFO L495 AbstractCegarLoop]: Abstraction has 59149 states and 88728 transitions. [2022-11-19 06:39:42,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 2 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) [2022-11-19 06:39:42,599 INFO L276 IsEmpty]: Start isEmpty. Operand 59149 states and 88728 transitions. [2022-11-19 06:39:42,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 944 [2022-11-19 06:39:42,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:42,908 INFO L195 NwaCegarLoop]: trace histogram [34, 25, 25, 25, 25, 25, 25, 18, 13, 13, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:39:42,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 06:39:43,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:39:43,108 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:39:43,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:43,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1192971442, now seen corresponding path program 1 times [2022-11-19 06:39:43,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:39:43,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341752080] [2022-11-19 06:39:43,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:43,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:39:44,085 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:39:44,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782817262] [2022-11-19 06:39:44,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:44,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:39:44,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:39:44,087 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:39:44,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fa8889e-f93f-478e-8a6b-52903463c634/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:39:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:52,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 23769 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:39:52,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:52,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3669 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 3421 trivial. 0 not checked. [2022-11-19 06:39:52,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:39:52,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:39:52,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341752080] [2022-11-19 06:39:52,526 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:39:52,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782817262] [2022-11-19 06:39:52,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782817262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:39:52,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:39:52,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:39:52,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850061414] [2022-11-19 06:39:52,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:39:52,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:39:52,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:39:52,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:39:52,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:39:52,531 INFO L87 Difference]: Start difference. First operand 59149 states and 88728 transitions. Second operand has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 2 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) [2022-11-19 06:40:07,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:40:10,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:40:12,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:40:20,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:40:22,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:40:23,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:40:25,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:40:27,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []