./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--stmicro--stmmac--stmmac.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e36c76-32f9-4e36-a876-44ee2ac6d0b8/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e36c76-32f9-4e36-a876-44ee2ac6d0b8/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e36c76-32f9-4e36-a876-44ee2ac6d0b8/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e36c76-32f9-4e36-a876-44ee2ac6d0b8/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--stmicro--stmmac--stmmac.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e36c76-32f9-4e36-a876-44ee2ac6d0b8/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e36c76-32f9-4e36-a876-44ee2ac6d0b8/bin/uautomizer-tBqnrhUYjU --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 046f5371192e04edfcb404c42cbf904dba4f5de1b9feb443275d06b623bd9ae5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:12:48,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:12:48,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:12:48,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:12:48,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:12:48,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:12:48,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:12:48,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:12:48,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:12:48,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:12:48,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:12:48,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:12:48,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:12:48,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:12:48,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:12:48,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:12:48,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:12:48,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:12:48,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:12:48,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:12:48,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:12:48,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:12:48,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:12:48,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:12:48,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:12:48,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:12:48,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:12:48,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:12:48,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:12:48,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:12:48,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:12:48,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:12:48,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:12:48,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:12:48,921 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:12:48,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:12:48,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:12:48,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:12:48,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:12:48,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:12:48,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:12:48,928 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e36c76-32f9-4e36-a876-44ee2ac6d0b8/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 23:12:48,985 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:12:48,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:12:48,988 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:12:48,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:12:48,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:12:48,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:12:48,990 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:12:48,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:12:48,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:12:48,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:12:48,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:12:48,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:12:48,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:12:48,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:12:48,992 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:12:48,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:12:48,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:12:48,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:12:48,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:12:48,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:12:48,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:12:48,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:12:48,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:12:48,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:12:48,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:12:48,995 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 23:12:48,996 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 23:12:48,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:12:48,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:12:48,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e36c76-32f9-4e36-a876-44ee2ac6d0b8/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e36c76-32f9-4e36-a876-44ee2ac6d0b8/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 046f5371192e04edfcb404c42cbf904dba4f5de1b9feb443275d06b623bd9ae5 [2021-11-02 23:12:49,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:12:49,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:12:49,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:12:49,330 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:12:49,333 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:12:49,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e36c76-32f9-4e36-a876-44ee2ac6d0b8/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--stmicro--stmmac--stmmac.ko-entry_point.cil.out.i [2021-11-02 23:12:49,417 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e36c76-32f9-4e36-a876-44ee2ac6d0b8/bin/uautomizer-tBqnrhUYjU/data/1fc4341e2/e6c35e6aa0d8480f8f03bd2bd80fcc6f/FLAG5e8f52e48 [2021-11-02 23:12:50,923 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:12:50,924 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e36c76-32f9-4e36-a876-44ee2ac6d0b8/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--stmicro--stmmac--stmmac.ko-entry_point.cil.out.i [2021-11-02 23:12:51,002 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e36c76-32f9-4e36-a876-44ee2ac6d0b8/bin/uautomizer-tBqnrhUYjU/data/1fc4341e2/e6c35e6aa0d8480f8f03bd2bd80fcc6f/FLAG5e8f52e48 [2021-11-02 23:12:51,329 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e36c76-32f9-4e36-a876-44ee2ac6d0b8/bin/uautomizer-tBqnrhUYjU/data/1fc4341e2/e6c35e6aa0d8480f8f03bd2bd80fcc6f [2021-11-02 23:12:51,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:12:51,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:12:51,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:12:51,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:12:51,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:12:51,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:12:51" (1/1) ... [2021-11-02 23:12:51,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71ef62df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:12:51, skipping insertion in model container [2021-11-02 23:12:51,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:12:51" (1/1) ... [2021-11-02 23:12:51,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:12:51,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:12:52,550 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6674] [2021-11-02 23:12:52,550 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6675-6676] [2021-11-02 23:12:53,536 WARN L228 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_d2e36c76-32f9-4e36-a876-44ee2ac6d0b8/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--stmicro--stmmac--stmmac.ko-entry_point.cil.out.i[206918,206931] [2021-11-02 23:13:01,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:13:02,247 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:13:02,496 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [6674] [2021-11-02 23:13:02,496 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [6675-6676] [2021-11-02 23:13:02,524 WARN L228 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_d2e36c76-32f9-4e36-a876-44ee2ac6d0b8/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--stmicro--stmmac--stmmac.ko-entry_point.cil.out.i[206918,206931] [2021-11-02 23:13:03,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:13:04,019 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:13:04,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:04 WrapperNode [2021-11-02 23:13:04,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:13:04,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:13:04,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:13:04,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:13:04,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:04" (1/1) ... [2021-11-02 23:13:04,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:04" (1/1) ... [2021-11-02 23:13:07,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:13:07,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:13:07,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:13:07,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:13:07,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:04" (1/1) ... [2021-11-02 23:13:07,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:04" (1/1) ... [2021-11-02 23:13:08,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:04" (1/1) ... [2021-11-02 23:13:08,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:04" (1/1) ... [2021-11-02 23:13:10,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:04" (1/1) ... [2021-11-02 23:13:10,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:04" (1/1) ... [2021-11-02 23:13:10,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:04" (1/1) ... [2021-11-02 23:13:11,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:13:11,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:13:11,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:13:11,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:13:11,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:04" (1/1) ... [2021-11-02 23:13:11,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:13:11,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e36c76-32f9-4e36-a876-44ee2ac6d0b8/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:13:11,347 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e36c76-32f9-4e36-a876-44ee2ac6d0b8/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:13:11,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2e36c76-32f9-4e36-a876-44ee2ac6d0b8/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:13:11,414 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_clean_desc3___0 [2021-11-02 23:13:11,415 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_clean_desc3___0 [2021-11-02 23:13:11,415 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_probe [2021-11-02 23:13:11,415 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_probe [2021-11-02 23:13:11,415 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_poll_controller [2021-11-02 23:13:11,416 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_poll_controller [2021-11-02 23:13:11,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-02 23:13:11,416 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_suspend [2021-11-02 23:13:11,416 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_suspend [2021-11-02 23:13:11,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 23:13:11,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 23:13:11,417 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_tx_skbufs [2021-11-02 23:13:11,417 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_tx_skbufs [2021-11-02 23:13:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 23:13:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 23:13:11,418 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_suspend [2021-11-02 23:13:11,418 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_suspend [2021-11-02 23:13:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_interrupt [2021-11-02 23:13:11,419 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_interrupt [2021-11-02 23:13:11,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:13:11,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:13:11,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 23:13:11,420 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-02 23:13:11,420 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_get_ethtool_stats [2021-11-02 23:13:11,420 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_get_ethtool_stats [2021-11-02 23:13:11,421 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_init_rx_buffers [2021-11-02 23:13:11,421 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_init_rx_buffers [2021-11-02 23:13:11,421 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_setup [2021-11-02 23:13:11,421 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_setup [2021-11-02 23:13:11,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:13:11,422 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-02 23:13:11,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-02 23:13:11,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 23:13:11,423 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_release [2021-11-02 23:13:11,424 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_release [2021-11-02 23:13:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_timeout [2021-11-02 23:13:11,424 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_timeout [2021-11-02 23:13:11,424 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_hw_init [2021-11-02 23:13:11,425 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_hw_init [2021-11-02 23:13:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 23:13:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_eee_mode [2021-11-02 23:13:11,426 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_eee_mode [2021-11-02 23:13:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_remove [2021-11-02 23:13:11,427 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_remove [2021-11-02 23:13:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_remove [2021-11-02 23:13:11,428 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_remove [2021-11-02 23:13:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dma_interrupt [2021-11-02 23:13:11,428 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dma_interrupt [2021-11-02 23:13:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pltfr_resume [2021-11-02 23:13:11,429 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pltfr_resume [2021-11-02 23:13:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 23:13:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_open [2021-11-02 23:13:11,430 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_open [2021-11-02 23:13:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 23:13:11,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 23:13:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure init_dma_desc_rings [2021-11-02 23:13:11,433 INFO L138 BoogieDeclarations]: Found implementation of procedure init_dma_desc_rings [2021-11-02 23:13:11,433 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_get_hw_features [2021-11-02 23:13:11,433 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_get_hw_features [2021-11-02 23:13:11,433 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_probe [2021-11-02 23:13:11,434 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_probe [2021-11-02 23:13:11,434 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_probe [2021-11-02 23:13:11,434 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_probe [2021-11-02 23:13:11,435 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_resume [2021-11-02 23:13:11,435 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_resume [2021-11-02 23:13:11,435 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma_desc_resources [2021-11-02 23:13:11,436 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma_desc_resources [2021-11-02 23:13:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_mdio_reset [2021-11-02 23:13:11,437 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_mdio_reset [2021-11-02 23:13:11,437 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 23:13:11,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 23:13:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_op_set_eee [2021-11-02 23:13:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_op_set_eee [2021-11-02 23:13:11,438 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-02 23:13:11,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-02 23:13:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 23:13:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 23:13:11,439 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_disable_dma_irq [2021-11-02 23:13:11,439 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_disable_dma_irq [2021-11-02 23:13:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_dvr_remove [2021-11-02 23:13:11,440 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_dvr_remove [2021-11-02 23:13:11,440 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_tx_err [2021-11-02 23:13:11,441 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_tx_err [2021-11-02 23:13:11,441 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_ethtool_getsettings [2021-11-02 23:13:11,441 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_ethtool_getsettings [2021-11-02 23:13:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 23:13:11,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 23:13:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:13:11,442 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-02 23:13:11,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-02 23:13:11,443 INFO L130 BoogieDeclarations]: Found specification of procedure stmmac_pci_resume [2021-11-02 23:13:11,443 INFO L138 BoogieDeclarations]: Found implementation of procedure stmmac_pci_resume [2021-11-02 23:15:50,979 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:15:50,979 INFO L299 CfgBuilder]: Removed 10186 assume(true) statements. [2021-11-02 23:15:50,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:15:50 BoogieIcfgContainer [2021-11-02 23:15:50,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:15:51,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:15:51,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:15:51,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:15:51,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:12:51" (1/3) ... [2021-11-02 23:15:51,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1dd0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:15:51, skipping insertion in model container [2021-11-02 23:15:51,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:13:04" (2/3) ... [2021-11-02 23:15:51,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c1dd0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:15:51, skipping insertion in model container [2021-11-02 23:15:51,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:15:50" (3/3) ... [2021-11-02 23:15:51,011 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_bitvector_linux-3.16-rc1.tar.xz-43_2a-drivers--net--ethernet--stmicro--stmmac--stmmac.ko-entry_point.cil.out.i [2021-11-02 23:15:51,019 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:15:51,019 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-02 23:15:51,147 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:15:51,160 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=PETRI_NET, 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 [2021-11-02 23:15:51,160 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-02 23:15:51,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 9857 states, 9672 states have (on average 1.423904052936311) internal successors, (13772), 9684 states have internal predecessors, (13772), 144 states have call successors, (144), 37 states have call predecessors, (144), 37 states have return successors, (144), 142 states have call predecessors, (144), 144 states have call successors, (144) [2021-11-02 23:15:51,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 23:15:51,479 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:51,480 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:15:51,481 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_hw_initErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_hw_initErr1ASSERT_VIOLATIONERROR_FUNCTION, stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:15:51,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:51,489 INFO L85 PathProgramCache]: Analyzing trace with hash -942835593, now seen corresponding path program 1 times [2021-11-02 23:15:51,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:15:51,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857774275] [2021-11-02 23:15:51,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:51,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:15:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:15:54,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:15:54,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857774275] [2021-11-02 23:15:54,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857774275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:15:54,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:15:54,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:15:54,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346360083] [2021-11-02 23:15:54,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:15:54,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:15:54,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:15:54,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:15:54,529 INFO L87 Difference]: Start difference. First operand has 9857 states, 9672 states have (on average 1.423904052936311) internal successors, (13772), 9684 states have internal predecessors, (13772), 144 states have call successors, (144), 37 states have call predecessors, (144), 37 states have return successors, (144), 142 states have call predecessors, (144), 144 states have call successors, (144) Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:55,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:55,670 INFO L93 Difference]: Finished difference Result 19736 states and 28308 transitions. [2021-11-02 23:15:55,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:15:55,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-02 23:15:55,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:15:55,792 INFO L225 Difference]: With dead ends: 19736 [2021-11-02 23:15:55,792 INFO L226 Difference]: Without dead ends: 9808 [2021-11-02 23:15:55,888 INFO L786 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 [2021-11-02 23:15:55,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9808 states. [2021-11-02 23:15:56,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9808 to 9808. [2021-11-02 23:15:56,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9808 states, 9624 states have (on average 1.3873649210307564) internal successors, (13352), 9635 states have internal predecessors, (13352), 144 states have call successors, (144), 37 states have call predecessors, (144), 37 states have return successors, (144), 142 states have call predecessors, (144), 144 states have call successors, (144) [2021-11-02 23:15:56,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9808 states to 9808 states and 13640 transitions. [2021-11-02 23:15:56,414 INFO L78 Accepts]: Start accepts. Automaton has 9808 states and 13640 transitions. Word has length 73 [2021-11-02 23:15:56,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:15:56,415 INFO L470 AbstractCegarLoop]: Abstraction has 9808 states and 13640 transitions. [2021-11-02 23:15:56,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:56,416 INFO L276 IsEmpty]: Start isEmpty. Operand 9808 states and 13640 transitions. [2021-11-02 23:15:56,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 23:15:56,449 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:15:56,450 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:15:56,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 23:15:56,451 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_hw_initErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_hw_initErr1ASSERT_VIOLATIONERROR_FUNCTION, stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:15:56,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:15:56,451 INFO L85 PathProgramCache]: Analyzing trace with hash 376197114, now seen corresponding path program 1 times [2021-11-02 23:15:56,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:15:56,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587940596] [2021-11-02 23:15:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:15:56,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:15:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:15:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 23:15:58,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:15:58,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587940596] [2021-11-02 23:15:58,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587940596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:15:58,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:15:58,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:15:58,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608634587] [2021-11-02 23:15:58,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:15:58,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:15:58,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:15:58,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:15:58,187 INFO L87 Difference]: Start difference. First operand 9808 states and 13640 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:15:59,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:15:59,930 INFO L93 Difference]: Finished difference Result 28569 states and 39961 transitions. [2021-11-02 23:15:59,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:15:59,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-02 23:15:59,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:00,182 INFO L225 Difference]: With dead ends: 28569 [2021-11-02 23:16:00,185 INFO L226 Difference]: Without dead ends: 18830 [2021-11-02 23:16:00,256 INFO L786 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 [2021-11-02 23:16:00,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18830 states. [2021-11-02 23:16:00,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18830 to 18586. [2021-11-02 23:16:00,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18586 states, 18237 states have (on average 1.3861380709546527) internal successors, (25279), 18258 states have internal predecessors, (25279), 275 states have call successors, (275), 74 states have call predecessors, (275), 71 states have return successors, (532), 266 states have call predecessors, (532), 275 states have call successors, (532) [2021-11-02 23:16:01,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18586 states to 18586 states and 26086 transitions. [2021-11-02 23:16:01,092 INFO L78 Accepts]: Start accepts. Automaton has 18586 states and 26086 transitions. Word has length 74 [2021-11-02 23:16:01,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:01,093 INFO L470 AbstractCegarLoop]: Abstraction has 18586 states and 26086 transitions. [2021-11-02 23:16:01,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:01,097 INFO L276 IsEmpty]: Start isEmpty. Operand 18586 states and 26086 transitions. [2021-11-02 23:16:01,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 23:16:01,362 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:01,363 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:16:01,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 23:16:01,364 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_hw_initErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_hw_initErr1ASSERT_VIOLATIONERROR_FUNCTION, stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:16:01,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:01,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1807666124, now seen corresponding path program 1 times [2021-11-02 23:16:01,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:01,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273624478] [2021-11-02 23:16:01,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:01,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:02,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 23:16:02,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:02,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273624478] [2021-11-02 23:16:02,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273624478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:02,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:02,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:16:02,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036764107] [2021-11-02 23:16:02,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:16:02,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:02,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:16:02,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:16:02,900 INFO L87 Difference]: Start difference. First operand 18586 states and 26086 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:04,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:04,601 INFO L93 Difference]: Finished difference Result 55518 states and 77956 transitions. [2021-11-02 23:16:04,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:16:04,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-02 23:16:04,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:05,167 INFO L225 Difference]: With dead ends: 55518 [2021-11-02 23:16:05,167 INFO L226 Difference]: Without dead ends: 37001 [2021-11-02 23:16:05,247 INFO L786 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 [2021-11-02 23:16:05,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37001 states. [2021-11-02 23:16:06,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37001 to 36633. [2021-11-02 23:16:06,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36633 states, 35948 states have (on average 1.3896183375987539) internal successors, (49954), 35986 states have internal predecessors, (49954), 540 states have call successors, (540), 148 states have call predecessors, (540), 142 states have return successors, (1048), 524 states have call predecessors, (1048), 540 states have call successors, (1048) [2021-11-02 23:16:07,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36633 states to 36633 states and 51542 transitions. [2021-11-02 23:16:07,286 INFO L78 Accepts]: Start accepts. Automaton has 36633 states and 51542 transitions. Word has length 75 [2021-11-02 23:16:07,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:07,287 INFO L470 AbstractCegarLoop]: Abstraction has 36633 states and 51542 transitions. [2021-11-02 23:16:07,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:07,288 INFO L276 IsEmpty]: Start isEmpty. Operand 36633 states and 51542 transitions. [2021-11-02 23:16:07,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 23:16:07,327 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:07,327 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:16:07,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 23:16:07,328 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_hw_initErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_hw_initErr1ASSERT_VIOLATIONERROR_FUNCTION, stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:16:07,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:07,329 INFO L85 PathProgramCache]: Analyzing trace with hash -358170467, now seen corresponding path program 1 times [2021-11-02 23:16:07,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:07,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967466217] [2021-11-02 23:16:07,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:07,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 23:16:09,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:09,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967466217] [2021-11-02 23:16:09,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967466217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:09,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:09,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:16:09,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962236106] [2021-11-02 23:16:09,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:16:09,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:09,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:16:09,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:16:09,236 INFO L87 Difference]: Start difference. First operand 36633 states and 51542 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:12,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:12,585 INFO L93 Difference]: Finished difference Result 109239 states and 153648 transitions. [2021-11-02 23:16:12,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:16:12,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-02 23:16:12,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:13,058 INFO L225 Difference]: With dead ends: 109239 [2021-11-02 23:16:13,058 INFO L226 Difference]: Without dead ends: 72675 [2021-11-02 23:16:13,225 INFO L786 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 [2021-11-02 23:16:13,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72675 states. [2021-11-02 23:16:15,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72675 to 72461. [2021-11-02 23:16:16,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72461 states, 71118 states have (on average 1.3898309851233162) internal successors, (98842), 71192 states have internal predecessors, (98842), 1056 states have call successors, (1056), 296 states have call predecessors, (1056), 284 states have return successors, (2048), 1024 states have call predecessors, (2048), 1056 states have call successors, (2048) [2021-11-02 23:16:16,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72461 states to 72461 states and 101946 transitions. [2021-11-02 23:16:16,398 INFO L78 Accepts]: Start accepts. Automaton has 72461 states and 101946 transitions. Word has length 81 [2021-11-02 23:16:16,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:16:16,399 INFO L470 AbstractCegarLoop]: Abstraction has 72461 states and 101946 transitions. [2021-11-02 23:16:16,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:16,399 INFO L276 IsEmpty]: Start isEmpty. Operand 72461 states and 101946 transitions. [2021-11-02 23:16:16,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 23:16:16,431 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:16:16,431 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:16:16,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 23:16:16,432 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION === [stmmac_hw_initErr0ASSERT_VIOLATIONERROR_FUNCTION, stmmac_hw_initErr1ASSERT_VIOLATIONERROR_FUNCTION, stmmac_init_rx_buffersErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 23:16:16,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:16:16,433 INFO L85 PathProgramCache]: Analyzing trace with hash 2084432441, now seen corresponding path program 1 times [2021-11-02 23:16:16,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:16:16,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160065447] [2021-11-02 23:16:16,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:16:16,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:16:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:16:18,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 23:16:18,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:16:18,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160065447] [2021-11-02 23:16:18,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160065447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:16:18,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:16:18,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:16:18,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169323632] [2021-11-02 23:16:18,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:16:18,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:16:18,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:16:18,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:16:18,553 INFO L87 Difference]: Start difference. First operand 72461 states and 101946 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:16:22,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:16:22,928 INFO L93 Difference]: Finished difference Result 214103 states and 301342 transitions. [2021-11-02 23:16:22,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:16:22,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-02 23:16:22,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:16:23,844 INFO L225 Difference]: With dead ends: 214103 [2021-11-02 23:16:23,845 INFO L226 Difference]: Without dead ends: 141711 [2021-11-02 23:16:24,217 INFO L786 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 [2021-11-02 23:16:24,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141711 states.