./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ea75eb-5e7f-4a26-ae60-fc2f2ce67cc1/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ea75eb-5e7f-4a26-ae60-fc2f2ce67cc1/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ea75eb-5e7f-4a26-ae60-fc2f2ce67cc1/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ea75eb-5e7f-4a26-ae60-fc2f2ce67cc1/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ea75eb-5e7f-4a26-ae60-fc2f2ce67cc1/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ea75eb-5e7f-4a26-ae60-fc2f2ce67cc1/bin/utaipan-TEXQjIfE4P --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 dc0241e7c40235715d7f33abd33c740b0c60d48c0a8a0992cf99bd2d48b4ffd0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:35:45,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:35:45,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:35:45,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:35:45,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:35:45,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:35:45,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:35:45,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:35:45,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:35:45,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:35:45,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:35:45,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:35:45,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:35:45,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:35:45,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:35:45,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:35:45,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:35:45,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:35:45,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:35:45,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:35:45,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:35:45,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:35:45,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:35:45,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:35:45,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:35:45,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:35:45,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:35:45,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:35:45,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:35:45,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:35:45,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:35:45,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:35:45,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:35:45,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:35:45,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:35:45,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:35:45,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:35:45,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:35:45,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:35:45,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:35:45,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:35:45,962 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ea75eb-5e7f-4a26-ae60-fc2f2ce67cc1/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:35:46,007 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:35:46,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:35:46,008 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:35:46,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:35:46,009 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:35:46,015 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:35:46,016 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:35:46,016 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:35:46,016 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:35:46,016 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:35:46,018 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:35:46,018 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:35:46,018 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:35:46,018 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:35:46,019 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:35:46,019 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:35:46,019 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:35:46,019 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:35:46,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:35:46,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:35:46,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:35:46,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:35:46,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:35:46,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:35:46,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:35:46,022 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:35:46,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:35:46,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:35:46,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:35:46,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:35:46,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:35:46,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:35:46,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:35:46,026 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:35:46,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:35:46,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:35:46,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:35:46,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:35:46,027 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ea75eb-5e7f-4a26-ae60-fc2f2ce67cc1/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ea75eb-5e7f-4a26-ae60-fc2f2ce67cc1/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc0241e7c40235715d7f33abd33c740b0c60d48c0a8a0992cf99bd2d48b4ffd0 [2021-11-20 23:35:46,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:35:46,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:35:46,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:35:46,338 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:35:46,339 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:35:46,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ea75eb-5e7f-4a26-ae60-fc2f2ce67cc1/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2021-11-20 23:35:46,408 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ea75eb-5e7f-4a26-ae60-fc2f2ce67cc1/bin/utaipan-TEXQjIfE4P/data/19baada55/ea16d772b93646f4a9fb38d93ceda4d9/FLAG8bb69f9d1 [2021-11-20 23:35:47,274 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:35:47,275 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ea75eb-5e7f-4a26-ae60-fc2f2ce67cc1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2021-11-20 23:35:47,325 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ea75eb-5e7f-4a26-ae60-fc2f2ce67cc1/bin/utaipan-TEXQjIfE4P/data/19baada55/ea16d772b93646f4a9fb38d93ceda4d9/FLAG8bb69f9d1 [2021-11-20 23:35:47,703 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ea75eb-5e7f-4a26-ae60-fc2f2ce67cc1/bin/utaipan-TEXQjIfE4P/data/19baada55/ea16d772b93646f4a9fb38d93ceda4d9 [2021-11-20 23:35:47,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:35:47,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:35:47,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:47,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:35:47,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:35:47,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:47" (1/1) ... [2021-11-20 23:35:47,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d96e748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:47, skipping insertion in model container [2021-11-20 23:35:47,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:47" (1/1) ... [2021-11-20 23:35:47,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:35:47,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:35:50,810 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ea75eb-5e7f-4a26-ae60-fc2f2ce67cc1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i[336326,336339] [2021-11-20 23:35:50,852 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:50,885 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:35:51,407 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ea75eb-5e7f-4a26-ae60-fc2f2ce67cc1/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i[336326,336339] [2021-11-20 23:35:51,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:51,652 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:35:51,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:51 WrapperNode [2021-11-20 23:35:51,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:51,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:35:51,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:35:51,655 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:35:51,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:51" (1/1) ... [2021-11-20 23:35:51,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:51" (1/1) ... [2021-11-20 23:35:51,989 INFO L137 Inliner]: procedures = 426, calls = 2215, calls flagged for inlining = 256, calls inlined = 245, statements flattened = 5984 [2021-11-20 23:35:51,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:35:51,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:35:51,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:35:51,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:35:52,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:51" (1/1) ... [2021-11-20 23:35:52,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:51" (1/1) ... [2021-11-20 23:35:52,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:51" (1/1) ... [2021-11-20 23:35:52,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:51" (1/1) ... [2021-11-20 23:35:52,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:51" (1/1) ... [2021-11-20 23:35:52,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:51" (1/1) ... [2021-11-20 23:35:52,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:51" (1/1) ... [2021-11-20 23:35:52,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:35:52,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:35:52,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:35:52,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:35:52,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:51" (1/1) ... [2021-11-20 23:35:52,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:35:52,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ea75eb-5e7f-4a26-ae60-fc2f2ce67cc1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:35:52,427 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ea75eb-5e7f-4a26-ae60-fc2f2ce67cc1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:35:52,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8ea75eb-5e7f-4a26-ae60-fc2f2ce67cc1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:35:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:35:52,480 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:35:52,480 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-20 23:35:52,480 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-20 23:35:52,480 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-20 23:35:52,480 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-20 23:35:52,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:35:52,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:35:52,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_open_9_6 [2021-11-20 23:35:52,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_open_9_6 [2021-11-20 23:35:52,481 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-20 23:35:52,481 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-20 23:35:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-20 23:35:52,482 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-20 23:35:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-20 23:35:52,482 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-20 23:35:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure macb_set_hwaddr [2021-11-20 23:35:52,482 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_set_hwaddr [2021-11-20 23:35:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure macb_get_regs_len [2021-11-20 23:35:52,483 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_get_regs_len [2021-11-20 23:35:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 23:35:52,483 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 23:35:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure macb_probe [2021-11-20 23:35:52,483 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_probe [2021-11-20 23:35:52,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-20 23:35:52,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-20 23:35:52,484 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-20 23:35:52,484 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-20 23:35:52,484 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-20 23:35:52,484 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-20 23:35:52,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 23:35:52,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 23:35:52,485 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-20 23:35:52,485 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-20 23:35:52,486 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-20 23:35:52,486 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-20 23:35:52,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:35:52,486 INFO L130 BoogieDeclarations]: Found specification of procedure macb_remove [2021-11-20 23:35:52,487 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_remove [2021-11-20 23:35:52,487 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-20 23:35:52,487 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-20 23:35:52,487 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-11-20 23:35:52,487 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-11-20 23:35:52,487 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-20 23:35:52,488 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-20 23:35:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:35:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure __napi_schedule [2021-11-20 23:35:52,488 INFO L138 BoogieDeclarations]: Found implementation of procedure __napi_schedule [2021-11-20 23:35:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-20 23:35:52,489 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-20 23:35:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-20 23:35:52,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-20 23:35:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:35:52,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-20 23:35:52,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-20 23:35:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:35:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-20 23:35:52,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-20 23:35:52,492 INFO L130 BoogieDeclarations]: Found specification of procedure macb_free_consistent [2021-11-20 23:35:52,493 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_free_consistent [2021-11-20 23:35:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:35:52,493 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:35:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2021-11-20 23:35:52,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_drivers_clk1__more_at_exit [2021-11-20 23:35:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-20 23:35:52,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-20 23:35:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure macb_open [2021-11-20 23:35:52,494 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_open [2021-11-20 23:35:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-20 23:35:52,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-20 23:35:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure macb_alloc_consistent [2021-11-20 23:35:52,495 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_alloc_consistent [2021-11-20 23:35:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure macb_resume [2021-11-20 23:35:52,496 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_resume [2021-11-20 23:35:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:35:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-20 23:35:52,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-20 23:35:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-20 23:35:52,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-20 23:35:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-20 23:35:52,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-20 23:35:52,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev [2021-11-20 23:35:52,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev [2021-11-20 23:35:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure macb_is_gem [2021-11-20 23:35:52,498 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_is_gem [2021-11-20 23:35:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-20 23:35:52,499 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-20 23:35:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:35:52,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-20 23:35:52,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-20 23:35:52,500 INFO L130 BoogieDeclarations]: Found specification of procedure macb_rx_ring_wrap [2021-11-20 23:35:52,500 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_rx_ring_wrap [2021-11-20 23:35:52,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:35:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:35:52,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:35:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:35:52,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:35:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2021-11-20 23:35:52,502 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2021-11-20 23:35:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 23:35:52,503 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 23:35:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-20 23:35:52,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-20 23:35:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-20 23:35:52,503 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-20 23:35:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule_prep [2021-11-20 23:35:52,504 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule_prep [2021-11-20 23:35:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-20 23:35:52,504 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-20 23:35:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:35:52,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:35:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-20 23:35:52,508 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-20 23:35:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2021-11-20 23:35:52,509 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2021-11-20 23:35:52,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:35:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:35:52,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:35:52,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:35:52,511 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2021-11-20 23:35:52,511 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2021-11-20 23:35:52,517 INFO L130 BoogieDeclarations]: Found specification of procedure phy_find_first [2021-11-20 23:35:52,517 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_find_first [2021-11-20 23:35:52,517 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-20 23:35:52,517 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-20 23:35:52,517 INFO L130 BoogieDeclarations]: Found specification of procedure macb_tx_ring_wrap [2021-11-20 23:35:52,517 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_tx_ring_wrap [2021-11-20 23:35:52,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-20 23:35:52,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-20 23:35:52,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_17 [2021-11-20 23:35:52,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_17 [2021-11-20 23:35:52,518 INFO L130 BoogieDeclarations]: Found specification of procedure macb_get_hwaddr [2021-11-20 23:35:52,518 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_get_hwaddr [2021-11-20 23:35:52,518 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-20 23:35:52,519 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-20 23:35:52,519 INFO L130 BoogieDeclarations]: Found specification of procedure macb_handle_link_change [2021-11-20 23:35:52,519 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_handle_link_change [2021-11-20 23:35:52,519 INFO L130 BoogieDeclarations]: Found specification of procedure macb_mii_init [2021-11-20 23:35:52,519 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_mii_init [2021-11-20 23:35:52,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_prepare_enable_14 [2021-11-20 23:35:52,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_prepare_enable_14 [2021-11-20 23:35:52,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_prepare_enable_16 [2021-11-20 23:35:52,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_prepare_enable_16 [2021-11-20 23:35:52,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_prepare_enable_15 [2021-11-20 23:35:52,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_prepare_enable_15 [2021-11-20 23:35:52,520 INFO L130 BoogieDeclarations]: Found specification of procedure macb_close [2021-11-20 23:35:52,520 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_close [2021-11-20 23:35:52,520 INFO L130 BoogieDeclarations]: Found specification of procedure macb_mdc_clk_div [2021-11-20 23:35:52,521 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_mdc_clk_div [2021-11-20 23:35:52,521 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-20 23:35:52,521 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-20 23:35:52,521 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-20 23:35:52,521 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-20 23:35:52,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_disable_unprepare_19 [2021-11-20 23:35:52,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_disable_unprepare_19 [2021-11-20 23:35:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:35:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_platdata [2021-11-20 23:35:52,522 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_platdata [2021-11-20 23:35:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-20 23:35:52,522 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-20 23:35:52,522 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-20 23:35:52,523 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-20 23:35:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_disable_unprepare_21 [2021-11-20 23:35:52,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_disable_unprepare_21 [2021-11-20 23:35:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:35:52,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_clk_disable_unprepare_20 [2021-11-20 23:35:52,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_clk_disable_unprepare_20 [2021-11-20 23:35:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure clk_get_rate [2021-11-20 23:35:52,524 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_get_rate [2021-11-20 23:35:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:35:52,524 INFO L130 BoogieDeclarations]: Found specification of procedure macb_set_rx_mode [2021-11-20 23:35:52,524 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_set_rx_mode [2021-11-20 23:35:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure macb_tx_desc [2021-11-20 23:35:52,525 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_tx_desc [2021-11-20 23:35:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-20 23:35:52,525 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-20 23:35:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-20 23:35:52,525 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-20 23:35:52,525 INFO L130 BoogieDeclarations]: Found specification of procedure macb_reset_hw [2021-11-20 23:35:52,525 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_reset_hw [2021-11-20 23:35:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-20 23:35:52,526 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-20 23:35:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure macb_suspend [2021-11-20 23:35:52,526 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_suspend [2021-11-20 23:35:52,526 INFO L130 BoogieDeclarations]: Found specification of procedure devm_clk_get [2021-11-20 23:35:52,528 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_clk_get [2021-11-20 23:35:52,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-20 23:35:52,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-20 23:35:52,528 INFO L130 BoogieDeclarations]: Found specification of procedure macb_dbw [2021-11-20 23:35:52,528 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_dbw [2021-11-20 23:35:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-20 23:35:52,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-20 23:35:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-20 23:35:52,529 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-20 23:35:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-20 23:35:52,529 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-20 23:35:52,529 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-20 23:35:52,530 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-20 23:35:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure devm_pinctrl_put [2021-11-20 23:35:52,530 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_pinctrl_put [2021-11-20 23:35:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-20 23:35:52,530 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-20 23:35:52,530 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 23:35:52,530 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 23:35:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:35:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:35:52,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:35:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure gem_rx_refill [2021-11-20 23:35:52,531 INFO L138 BoogieDeclarations]: Found implementation of procedure gem_rx_refill [2021-11-20 23:35:52,531 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-20 23:35:52,531 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-20 23:35:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure macb_tx_dma [2021-11-20 23:35:52,532 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_tx_dma [2021-11-20 23:35:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure macb_tx_skb [2021-11-20 23:35:52,532 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_tx_skb [2021-11-20 23:35:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure macb_interrupt [2021-11-20 23:35:52,532 INFO L138 BoogieDeclarations]: Found implementation of procedure macb_interrupt [2021-11-20 23:35:52,532 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-20 23:35:52,533 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-20 23:35:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure __readl [2021-11-20 23:35:52,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __readl [2021-11-20 23:35:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-20 23:35:52,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-20 23:35:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure __writel [2021-11-20 23:35:52,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __writel [2021-11-20 23:35:52,533 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-20 23:35:52,534 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-20 23:35:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:35:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-20 23:35:52,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-20 23:35:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-20 23:35:52,534 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-20 23:35:53,692 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:35:53,699 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:35:53,841 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:35:58,887 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-20 23:35:58,955 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:36:00,190 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:36:00,190 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:36:00,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:00 BoogieIcfgContainer [2021-11-20 23:36:00,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:36:00,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:36:00,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:36:00,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:36:00,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:35:47" (1/3) ... [2021-11-20 23:36:00,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6735d836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:00, skipping insertion in model container [2021-11-20 23:36:00,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:51" (2/3) ... [2021-11-20 23:36:00,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6735d836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:00, skipping insertion in model container [2021-11-20 23:36:00,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:00" (3/3) ... [2021-11-20 23:36:00,204 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-cadence-macb.cil.i [2021-11-20 23:36:00,209 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:36:00,209 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:36:00,266 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:36:00,272 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:36:00,272 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:36:00,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 1609 states, 979 states have (on average 1.2941777323799795) internal successors, (1267), 997 states have internal predecessors, (1267), 522 states have call successors, (522), 108 states have call predecessors, (522), 107 states have return successors, (515), 510 states have call predecessors, (515), 515 states have call successors, (515) [2021-11-20 23:36:00,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-20 23:36:00,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:00,345 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:00,345 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:00,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:00,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1590180421, now seen corresponding path program 1 times [2021-11-20 23:36:00,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:00,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699947926] [2021-11-20 23:36:00,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:00,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:00,987 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2021-11-20 23:36:00,988 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:00,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699947926] [2021-11-20 23:36:00,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699947926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:00,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:00,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:00,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413363489] [2021-11-20 23:36:00,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:00,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:00,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:01,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:01,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:01,029 INFO L87 Difference]: Start difference. First operand has 1609 states, 979 states have (on average 1.2941777323799795) internal successors, (1267), 997 states have internal predecessors, (1267), 522 states have call successors, (522), 108 states have call predecessors, (522), 107 states have return successors, (515), 510 states have call predecessors, (515), 515 states have call successors, (515) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 23:36:05,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:05,434 INFO L93 Difference]: Finished difference Result 4724 states and 6776 transitions. [2021-11-20 23:36:05,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:05,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 127 [2021-11-20 23:36:05,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:05,486 INFO L225 Difference]: With dead ends: 4724 [2021-11-20 23:36:05,486 INFO L226 Difference]: Without dead ends: 3126 [2021-11-20 23:36:05,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:05,505 INFO L933 BasicCegarLoop]: 2464 mSDtfsCounter, 2224 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2224 SdHoareTripleChecker+Valid, 4405 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:05,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2224 Valid, 4405 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-20 23:36:05,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2021-11-20 23:36:05,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 3126. [2021-11-20 23:36:05,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3126 states, 1912 states have (on average 1.2913179916317992) internal successors, (2469), 1948 states have internal predecessors, (2469), 1002 states have call successors, (1002), 212 states have call predecessors, (1002), 211 states have return successors, (999), 989 states have call predecessors, (999), 999 states have call successors, (999) [2021-11-20 23:36:05,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 4470 transitions. [2021-11-20 23:36:05,913 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 4470 transitions. Word has length 127 [2021-11-20 23:36:05,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:05,917 INFO L470 AbstractCegarLoop]: Abstraction has 3126 states and 4470 transitions. [2021-11-20 23:36:05,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 23:36:05,919 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 4470 transitions. [2021-11-20 23:36:05,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-20 23:36:05,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:05,948 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 4, 4, 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] [2021-11-20 23:36:05,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:36:05,949 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:05,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:05,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1872571493, now seen corresponding path program 1 times [2021-11-20 23:36:05,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:05,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210168929] [2021-11-20 23:36:05,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:05,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:06,343 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2021-11-20 23:36:06,343 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:06,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210168929] [2021-11-20 23:36:06,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210168929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:06,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:06,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:36:06,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010871974] [2021-11-20 23:36:06,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:06,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:06,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:06,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:06,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:06,347 INFO L87 Difference]: Start difference. First operand 3126 states and 4470 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-20 23:36:08,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:10,732 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:14,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:14,859 INFO L93 Difference]: Finished difference Result 6235 states and 8911 transitions. [2021-11-20 23:36:14,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:36:14,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 165 [2021-11-20 23:36:14,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:14,926 INFO L225 Difference]: With dead ends: 6235 [2021-11-20 23:36:14,926 INFO L226 Difference]: Without dead ends: 6233 [2021-11-20 23:36:14,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:14,937 INFO L933 BasicCegarLoop]: 2445 mSDtfsCounter, 2239 mSDsluCounter, 7790 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 9245 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:14,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2242 Valid, 9245 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1333 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2021-11-20 23:36:14,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6233 states. [2021-11-20 23:36:15,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6233 to 6231. [2021-11-20 23:36:15,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6231 states, 3814 states have (on average 1.2920818038804405) internal successors, (4928), 3886 states have internal predecessors, (4928), 1993 states have call successors, (1993), 425 states have call predecessors, (1993), 423 states have return successors, (1987), 1967 states have call predecessors, (1987), 1987 states have call successors, (1987) [2021-11-20 23:36:15,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6231 states to 6231 states and 8908 transitions. [2021-11-20 23:36:15,418 INFO L78 Accepts]: Start accepts. Automaton has 6231 states and 8908 transitions. Word has length 165 [2021-11-20 23:36:15,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:15,421 INFO L470 AbstractCegarLoop]: Abstraction has 6231 states and 8908 transitions. [2021-11-20 23:36:15,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-20 23:36:15,422 INFO L276 IsEmpty]: Start isEmpty. Operand 6231 states and 8908 transitions. [2021-11-20 23:36:15,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-20 23:36:15,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:15,435 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:15,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:36:15,435 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:15,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:15,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1739269773, now seen corresponding path program 1 times [2021-11-20 23:36:15,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:15,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963400613] [2021-11-20 23:36:15,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:15,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:15,796 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2021-11-20 23:36:15,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:15,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963400613] [2021-11-20 23:36:15,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963400613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:15,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:15,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:36:15,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200572243] [2021-11-20 23:36:15,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:15,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:15,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:15,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:15,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:15,802 INFO L87 Difference]: Start difference. First operand 6231 states and 8908 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-20 23:36:19,033 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:22,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:27,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:27,149 INFO L93 Difference]: Finished difference Result 12029 states and 17383 transitions. [2021-11-20 23:36:27,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:36:27,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 170 [2021-11-20 23:36:27,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:27,262 INFO L225 Difference]: With dead ends: 12029 [2021-11-20 23:36:27,263 INFO L226 Difference]: Without dead ends: 12027 [2021-11-20 23:36:27,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:27,278 INFO L933 BasicCegarLoop]: 2485 mSDtfsCounter, 2138 mSDsluCounter, 7879 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 9359 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:27,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2140 Valid, 9359 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1362 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2021-11-20 23:36:27,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12027 states. [2021-11-20 23:36:27,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12027 to 11937. [2021-11-20 23:36:27,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11937 states, 7305 states have (on average 1.2956878850102669) internal successors, (9465), 7481 states have internal predecessors, (9465), 3807 states have call successors, (3807), 828 states have call predecessors, (3807), 824 states have return successors, (3987), 3719 states have call predecessors, (3987), 3795 states have call successors, (3987) [2021-11-20 23:36:28,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11937 states to 11937 states and 17259 transitions. [2021-11-20 23:36:28,064 INFO L78 Accepts]: Start accepts. Automaton has 11937 states and 17259 transitions. Word has length 170 [2021-11-20 23:36:28,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:28,066 INFO L470 AbstractCegarLoop]: Abstraction has 11937 states and 17259 transitions. [2021-11-20 23:36:28,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-20 23:36:28,067 INFO L276 IsEmpty]: Start isEmpty. Operand 11937 states and 17259 transitions. [2021-11-20 23:36:28,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-20 23:36:28,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:28,080 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:28,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:36:28,080 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:28,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:28,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1742205595, now seen corresponding path program 1 times [2021-11-20 23:36:28,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:28,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443047361] [2021-11-20 23:36:28,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:28,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2021-11-20 23:36:28,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:28,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443047361] [2021-11-20 23:36:28,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443047361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:28,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:28,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:36:28,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448771113] [2021-11-20 23:36:28,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:28,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:28,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:28,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:28,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:28,408 INFO L87 Difference]: Start difference. First operand 11937 states and 17259 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-20 23:36:34,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:36,230 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:37,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:37,900 INFO L93 Difference]: Finished difference Result 23257 states and 34161 transitions. [2021-11-20 23:36:37,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:36:37,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 175 [2021-11-20 23:36:37,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:38,086 INFO L225 Difference]: With dead ends: 23257 [2021-11-20 23:36:38,087 INFO L226 Difference]: Without dead ends: 23253 [2021-11-20 23:36:38,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:38,111 INFO L933 BasicCegarLoop]: 2484 mSDtfsCounter, 2125 mSDsluCounter, 7879 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2126 SdHoareTripleChecker+Valid, 9362 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:38,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2126 Valid, 9362 Invalid, 1363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1357 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2021-11-20 23:36:38,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23253 states. [2021-11-20 23:36:39,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23253 to 23123. [2021-11-20 23:36:39,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23123 states, 14164 states have (on average 1.2987150522451285) internal successors, (18395), 14543 states have internal predecessors, (18395), 7359 states have call successors, (7359), 1620 states have call predecessors, (7359), 1599 states have return successors, (8231), 7135 states have call predecessors, (8231), 7335 states have call successors, (8231) [2021-11-20 23:36:39,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23123 states to 23123 states and 33985 transitions. [2021-11-20 23:36:39,701 INFO L78 Accepts]: Start accepts. Automaton has 23123 states and 33985 transitions. Word has length 175 [2021-11-20 23:36:39,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:39,701 INFO L470 AbstractCegarLoop]: Abstraction has 23123 states and 33985 transitions. [2021-11-20 23:36:39,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-20 23:36:39,702 INFO L276 IsEmpty]: Start isEmpty. Operand 23123 states and 33985 transitions. [2021-11-20 23:36:39,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-20 23:36:39,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:39,720 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 11, 11, 11, 11, 11, 6, 6, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:39,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:36:39,720 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:39,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:39,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1218812534, now seen corresponding path program 1 times [2021-11-20 23:36:39,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:39,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166798469] [2021-11-20 23:36:39,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:39,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2021-11-20 23:36:39,985 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:39,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166798469] [2021-11-20 23:36:39,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166798469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:39,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:39,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:36:39,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636044870] [2021-11-20 23:36:39,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:39,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:36:39,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:39,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:36:39,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:39,989 INFO L87 Difference]: Start difference. First operand 23123 states and 33985 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 23:36:42,478 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:46,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:49,588 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:51,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:51,443 INFO L93 Difference]: Finished difference Result 46221 states and 69505 transitions. [2021-11-20 23:36:51,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:36:51,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 189 [2021-11-20 23:36:51,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:51,915 INFO L225 Difference]: With dead ends: 46221 [2021-11-20 23:36:51,915 INFO L226 Difference]: Without dead ends: 46132 [2021-11-20 23:36:51,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:36:51,957 INFO L933 BasicCegarLoop]: 2486 mSDtfsCounter, 2257 mSDsluCounter, 7887 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2257 SdHoareTripleChecker+Valid, 9386 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:51,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2257 Valid, 9386 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1330 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2021-11-20 23:36:52,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46132 states. [2021-11-20 23:36:54,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46132 to 46104. [2021-11-20 23:36:55,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46104 states, 28249 states have (on average 1.2992318312152642) internal successors, (36702), 29014 states have internal predecessors, (36702), 14674 states have call successors, (14674), 3224 states have call predecessors, (14674), 3180 states have return successors, (17989), 14217 states have call predecessors, (17989), 14629 states have call successors, (17989) [2021-11-20 23:36:55,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46104 states to 46104 states and 69365 transitions. [2021-11-20 23:36:55,395 INFO L78 Accepts]: Start accepts. Automaton has 46104 states and 69365 transitions. Word has length 189 [2021-11-20 23:36:55,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:55,399 INFO L470 AbstractCegarLoop]: Abstraction has 46104 states and 69365 transitions. [2021-11-20 23:36:55,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-20 23:36:55,400 INFO L276 IsEmpty]: Start isEmpty. Operand 46104 states and 69365 transitions. [2021-11-20 23:36:55,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-20 23:36:55,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:55,438 INFO L514 BasicCegarLoop]: trace histogram [16, 11, 11, 11, 11, 11, 11, 4, 4, 3, 3, 3, 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] [2021-11-20 23:36:55,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:36:55,439 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:55,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:55,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1442814685, now seen corresponding path program 1 times [2021-11-20 23:36:55,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:55,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933533730] [2021-11-20 23:36:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:55,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2021-11-20 23:36:55,877 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:55,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933533730] [2021-11-20 23:36:55,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933533730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:55,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:55,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:55,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246386908] [2021-11-20 23:36:55,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:55,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:55,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:55,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:55,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:55,880 INFO L87 Difference]: Start difference. First operand 46104 states and 69365 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-20 23:37:03,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:03,793 INFO L93 Difference]: Finished difference Result 132914 states and 204695 transitions. [2021-11-20 23:37:03,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:37:03,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 201 [2021-11-20 23:37:03,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:04,495 INFO L225 Difference]: With dead ends: 132914 [2021-11-20 23:37:04,495 INFO L226 Difference]: Without dead ends: 86833 [2021-11-20 23:37:04,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:04,903 INFO L933 BasicCegarLoop]: 2421 mSDtfsCounter, 2005 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 4341 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:04,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2005 Valid, 4341 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-20 23:37:04,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86833 states. [2021-11-20 23:37:09,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86833 to 86567. [2021-11-20 23:37:09,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86567 states, 52964 states have (on average 1.29225511668303) internal successors, (68443), 54463 states have internal predecessors, (68443), 27430 states have call successors, (27430), 6276 states have call predecessors, (27430), 6172 states have return successors, (39049), 26443 states have call predecessors, (39049), 27385 states have call successors, (39049) [2021-11-20 23:37:10,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86567 states to 86567 states and 134922 transitions. [2021-11-20 23:37:10,317 INFO L78 Accepts]: Start accepts. Automaton has 86567 states and 134922 transitions. Word has length 201 [2021-11-20 23:37:10,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:10,318 INFO L470 AbstractCegarLoop]: Abstraction has 86567 states and 134922 transitions. [2021-11-20 23:37:10,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-20 23:37:10,318 INFO L276 IsEmpty]: Start isEmpty. Operand 86567 states and 134922 transitions. [2021-11-20 23:37:10,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-20 23:37:10,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:10,349 INFO L514 BasicCegarLoop]: trace histogram [18, 11, 11, 11, 11, 11, 11, 4, 4, 3, 3, 3, 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] [2021-11-20 23:37:10,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:37:10,349 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:10,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:10,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1474675785, now seen corresponding path program 1 times [2021-11-20 23:37:10,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:10,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524303484] [2021-11-20 23:37:10,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:10,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2021-11-20 23:37:10,540 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:10,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524303484] [2021-11-20 23:37:10,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524303484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:10,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:10,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:37:10,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761705777] [2021-11-20 23:37:10,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:10,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:37:10,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:10,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:37:10,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:10,543 INFO L87 Difference]: Start difference. First operand 86567 states and 134922 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-20 23:37:16,624 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:20,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:20,505 INFO L93 Difference]: Finished difference Result 245775 states and 373842 transitions. [2021-11-20 23:37:20,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:37:20,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 235 [2021-11-20 23:37:20,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:21,793 INFO L225 Difference]: With dead ends: 245775 [2021-11-20 23:37:21,793 INFO L226 Difference]: Without dead ends: 159231 [2021-11-20 23:37:22,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:22,107 INFO L933 BasicCegarLoop]: 3067 mSDtfsCounter, 2029 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 4961 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:22,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2029 Valid, 4961 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-20 23:37:22,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159231 states. [2021-11-20 23:37:29,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159231 to 158893. [2021-11-20 23:37:29,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158893 states, 96766 states have (on average 1.2731847963127545) internal successors, (123201), 99469 states have internal predecessors, (123201), 50194 states have call successors, (50194), 11932 states have call predecessors, (50194), 11932 states have return successors, (63413), 48723 states have call predecessors, (63413), 50149 states have call successors, (63413) [2021-11-20 23:37:31,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158893 states to 158893 states and 236808 transitions. [2021-11-20 23:37:31,119 INFO L78 Accepts]: Start accepts. Automaton has 158893 states and 236808 transitions. Word has length 235 [2021-11-20 23:37:31,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:31,119 INFO L470 AbstractCegarLoop]: Abstraction has 158893 states and 236808 transitions. [2021-11-20 23:37:31,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-20 23:37:31,120 INFO L276 IsEmpty]: Start isEmpty. Operand 158893 states and 236808 transitions. [2021-11-20 23:37:31,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-20 23:37:31,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:31,165 INFO L514 BasicCegarLoop]: trace histogram [19, 11, 11, 11, 11, 11, 11, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:31,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:37:31,165 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_drivers_clk1__more_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:31,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:31,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1728050790, now seen corresponding path program 1 times [2021-11-20 23:37:31,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:31,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882153899] [2021-11-20 23:37:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:31,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:31,335 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2021-11-20 23:37:31,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:31,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882153899] [2021-11-20 23:37:31,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882153899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:31,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:31,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:37:31,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48174988] [2021-11-20 23:37:31,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:31,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:37:31,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:31,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:37:31,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:31,339 INFO L87 Difference]: Start difference. First operand 158893 states and 236808 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-20 23:37:35,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:40,132 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:41,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:45,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:45,129 INFO L93 Difference]: Finished difference Result 296143 states and 441670 transitions. [2021-11-20 23:37:45,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:37:45,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 249 [2021-11-20 23:37:45,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:46,518 INFO L225 Difference]: With dead ends: 296143 [2021-11-20 23:37:46,518 INFO L226 Difference]: Without dead ends: 137273 [2021-11-20 23:37:47,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:37:47,067 INFO L933 BasicCegarLoop]: 3591 mSDtfsCounter, 2161 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 5514 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:47,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2161 Valid, 5514 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 954 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2021-11-20 23:37:47,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137273 states.