./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccca11b0-4631-4e8d-ad0e-0403337bed2f/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccca11b0-4631-4e8d-ad0e-0403337bed2f/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccca11b0-4631-4e8d-ad0e-0403337bed2f/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccca11b0-4631-4e8d-ad0e-0403337bed2f/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccca11b0-4631-4e8d-ad0e-0403337bed2f/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccca11b0-4631-4e8d-ad0e-0403337bed2f/bin/utaipan-6cKwYrpEi9 --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 2c13f17bef293e22dbc8fc00ce80e620ba1259ce3bd9f704a30527baafc650b9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:48:20,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:48:20,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:48:20,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:48:20,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:48:20,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:48:20,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:48:20,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:48:20,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:48:20,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:48:20,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:48:20,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:48:20,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:48:20,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:48:20,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:48:20,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:48:20,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:48:20,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:48:20,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:48:20,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:48:20,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:48:20,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:48:20,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:48:20,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:48:20,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:48:20,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:48:20,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:48:20,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:48:20,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:48:20,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:48:20,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:48:20,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:48:20,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:48:20,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:48:20,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:48:20,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:48:20,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:48:20,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:48:20,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:48:20,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:48:20,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:48:20,988 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccca11b0-4631-4e8d-ad0e-0403337bed2f/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 20:48:21,026 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:48:21,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:48:21,027 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:48:21,028 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:48:21,029 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:48:21,029 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:48:21,029 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:48:21,029 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:48:21,030 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:48:21,030 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:48:21,031 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:48:21,032 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:48:21,032 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:48:21,032 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:48:21,032 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:48:21,033 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:48:21,033 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:48:21,033 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:48:21,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:48:21,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:48:21,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:48:21,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:48:21,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:48:21,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:48:21,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:48:21,036 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:48:21,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:48:21,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:48:21,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:48:21,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:48:21,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:48:21,038 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:48:21,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:48:21,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:48:21,039 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:48:21,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:48:21,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:48:21,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:48:21,040 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_ccca11b0-4631-4e8d-ad0e-0403337bed2f/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccca11b0-4631-4e8d-ad0e-0403337bed2f/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c13f17bef293e22dbc8fc00ce80e620ba1259ce3bd9f704a30527baafc650b9 [2022-11-20 20:48:21,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:48:21,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:48:21,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:48:21,371 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:48:21,371 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:48:21,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccca11b0-4631-4e8d-ad0e-0403337bed2f/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2022-11-20 20:48:24,329 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:48:24,953 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:48:24,954 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccca11b0-4631-4e8d-ad0e-0403337bed2f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2022-11-20 20:48:25,017 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccca11b0-4631-4e8d-ad0e-0403337bed2f/bin/utaipan-6cKwYrpEi9/data/29abbbc89/c032d4119ce642c7a4216b0c1cdd52c5/FLAG8e2f5de7a [2022-11-20 20:48:25,036 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccca11b0-4631-4e8d-ad0e-0403337bed2f/bin/utaipan-6cKwYrpEi9/data/29abbbc89/c032d4119ce642c7a4216b0c1cdd52c5 [2022-11-20 20:48:25,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:48:25,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:48:25,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:48:25,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:48:25,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:48:25,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:48:25" (1/1) ... [2022-11-20 20:48:25,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec56846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:25, skipping insertion in model container [2022-11-20 20:48:25,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:48:25" (1/1) ... [2022-11-20 20:48:25,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:48:25,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:48:27,440 WARN L237 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_ccca11b0-4631-4e8d-ad0e-0403337bed2f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i[299705,299718] [2022-11-20 20:48:27,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:48:27,605 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:48:28,074 WARN L237 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_ccca11b0-4631-4e8d-ad0e-0403337bed2f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i[299705,299718] [2022-11-20 20:48:28,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:48:28,271 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:48:28,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:28 WrapperNode [2022-11-20 20:48:28,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:48:28,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:48:28,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:48:28,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:48:28,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:28" (1/1) ... [2022-11-20 20:48:28,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:28" (1/1) ... [2022-11-20 20:48:28,620 INFO L138 Inliner]: procedures = 314, calls = 3823, calls flagged for inlining = 118, calls inlined = 83, statements flattened = 4790 [2022-11-20 20:48:28,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:48:28,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:48:28,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:48:28,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:48:28,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:28" (1/1) ... [2022-11-20 20:48:28,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:28" (1/1) ... [2022-11-20 20:48:28,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:28" (1/1) ... [2022-11-20 20:48:28,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:28" (1/1) ... [2022-11-20 20:48:28,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:28" (1/1) ... [2022-11-20 20:48:28,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:28" (1/1) ... [2022-11-20 20:48:28,955 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:28" (1/1) ... [2022-11-20 20:48:28,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:28" (1/1) ... [2022-11-20 20:48:29,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:48:29,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:48:29,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:48:29,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:48:29,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:28" (1/1) ... [2022-11-20 20:48:29,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:48:29,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccca11b0-4631-4e8d-ad0e-0403337bed2f/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:48:29,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccca11b0-4631-4e8d-ad0e-0403337bed2f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:48:29,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ccca11b0-4631-4e8d-ad0e-0403337bed2f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:48:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2022-11-20 20:48:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure smi_stats_proc_open [2022-11-20 20:48:29,105 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_stats_proc_open [2022-11-20 20:48:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-20 20:48:29,105 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-20 20:48:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-20 20:48:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_smi_msg_received [2022-11-20 20:48:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_smi_msg_received [2022-11-20 20:48:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 20:48:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-20 20:48:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-20 20:48:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-20 20:48:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-20 20:48:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure intf_find_seq [2022-11-20 20:48:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_find_seq [2022-11-20 20:48:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-20 20:48:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-20 20:48:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-20 20:48:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-20 20:48:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 20:48:29,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 20:48:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure handle_read_event_rsp [2022-11-20 20:48:29,108 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_read_event_rsp [2022-11-20 20:48:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2022-11-20 20:48:29,108 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2022-11-20 20:48:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure handle_ipmb_get_msg_cmd [2022-11-20 20:48:29,109 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_ipmb_get_msg_cmd [2022-11-20 20:48:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~bool~0~TO~VOID [2022-11-20 20:48:29,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~bool~0~TO~VOID [2022-11-20 20:48:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_poll [2022-11-20 20:48:29,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_poll [2022-11-20 20:48:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure handle_lan_get_msg_cmd [2022-11-20 20:48:29,111 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_lan_get_msg_cmd [2022-11-20 20:48:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure handle_bmc_rsp [2022-11-20 20:48:29,111 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_bmc_rsp [2022-11-20 20:48:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-20 20:48:29,111 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-20 20:48:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-20 20:48:29,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-20 20:48:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure __write_once_size [2022-11-20 20:48:29,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __write_once_size [2022-11-20 20:48:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure format_lan_msg [2022-11-20 20:48:29,112 INFO L138 BoogieDeclarations]: Found implementation of procedure format_lan_msg [2022-11-20 20:48:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-20 20:48:29,113 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-20 20:48:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 20:48:29,113 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 20:48:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_smi_msg [2022-11-20 20:48:29,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_smi_msg [2022-11-20 20:48:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure copy_event_into_recv_msg [2022-11-20 20:48:29,114 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_event_into_recv_msg [2022-11-20 20:48:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_panic_request_and_wait [2022-11-20 20:48:29,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_panic_request_and_wait [2022-11-20 20:48:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-11-20 20:48:29,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-11-20 20:48:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure handle_oem_get_msg_cmd [2022-11-20 20:48:29,115 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_oem_get_msg_cmd [2022-11-20 20:48:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:48:29,115 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-20 20:48:29,116 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-20 20:48:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure proc_mkdir [2022-11-20 20:48:29,116 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_mkdir [2022-11-20 20:48:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure need_waiter [2022-11-20 20:48:29,116 INFO L138 BoogieDeclarations]: Found implementation of procedure need_waiter [2022-11-20 20:48:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 20:48:29,116 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-20 20:48:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-20 20:48:29,117 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-20 20:48:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure smi_send [2022-11-20 20:48:29,117 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_send [2022-11-20 20:48:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2022-11-20 20:48:29,117 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2022-11-20 20:48:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure smi_add_send_msg [2022-11-20 20:48:29,118 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_add_send_msg [2022-11-20 20:48:29,118 INFO L130 BoogieDeclarations]: Found specification of procedure intf_next_seq [2022-11-20 20:48:29,118 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_next_seq [2022-11-20 20:48:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:48:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 20:48:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure find_cmd_rcvr [2022-11-20 20:48:29,119 INFO L138 BoogieDeclarations]: Found implementation of procedure find_cmd_rcvr [2022-11-20 20:48:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure PDE_DATA [2022-11-20 20:48:29,119 INFO L138 BoogieDeclarations]: Found implementation of procedure PDE_DATA [2022-11-20 20:48:29,120 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-20 20:48:29,120 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-20 20:48:29,120 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-20 20:48:29,121 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-20 20:48:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure i_ipmi_request [2022-11-20 20:48:29,121 INFO L138 BoogieDeclarations]: Found implementation of procedure i_ipmi_request [2022-11-20 20:48:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_init_msghandler [2022-11-20 20:48:29,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_init_msghandler [2022-11-20 20:48:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-20 20:48:29,122 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-20 20:48:29,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-20 20:48:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure free_smi_msg_list [2022-11-20 20:48:29,123 INFO L138 BoogieDeclarations]: Found implementation of procedure free_smi_msg_list [2022-11-20 20:48:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-20 20:48:29,123 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-20 20:48:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 20:48:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure clean_up_interface_data [2022-11-20 20:48:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure clean_up_interface_data [2022-11-20 20:48:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~ipmi_smi_t~0~X~$Pointer$~TO~VOID [2022-11-20 20:48:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~ipmi_smi_t~0~X~$Pointer$~TO~VOID [2022-11-20 20:48:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-11-20 20:48:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-11-20 20:48:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-20 20:48:29,125 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-20 20:48:29,125 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_recv_msg [2022-11-20 20:48:29,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_recv_msg [2022-11-20 20:48:29,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:48:29,126 INFO L130 BoogieDeclarations]: Found specification of procedure handle_ipmb_get_msg_rsp [2022-11-20 20:48:29,126 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_ipmb_get_msg_rsp [2022-11-20 20:48:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_err_response [2022-11-20 20:48:29,129 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_err_response [2022-11-20 20:48:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-11-20 20:48:29,130 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-11-20 20:48:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-20 20:48:29,132 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-20 20:48:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-20 20:48:29,133 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-20 20:48:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_rcu [2022-11-20 20:48:29,138 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_rcu [2022-11-20 20:48:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-11-20 20:48:29,138 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-11-20 20:48:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure smi_ipmb_proc_open [2022-11-20 20:48:29,139 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_ipmb_proc_open [2022-11-20 20:48:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure maintenance_mode_update [2022-11-20 20:48:29,139 INFO L138 BoogieDeclarations]: Found implementation of procedure maintenance_mode_update [2022-11-20 20:48:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-20 20:48:29,139 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-20 20:48:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-20 20:48:29,139 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-20 20:48:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:48:29,140 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-11-20 20:48:29,140 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-11-20 20:48:29,140 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-20 20:48:29,140 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-20 20:48:29,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-20 20:48:29,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-20 20:48:29,140 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-20 20:48:29,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-20 20:48:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_addr [2022-11-20 20:48:29,141 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_addr [2022-11-20 20:48:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2022-11-20 20:48:29,141 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2022-11-20 20:48:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-20 20:48:29,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-20 20:48:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 20:48:29,141 INFO L130 BoogieDeclarations]: Found specification of procedure handle_lan_get_msg_rsp [2022-11-20 20:48:29,142 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_lan_get_msg_rsp [2022-11-20 20:48:29,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-20 20:48:29,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-20 20:48:29,142 INFO L130 BoogieDeclarations]: Found specification of procedure smi_version_proc_open [2022-11-20 20:48:29,142 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_version_proc_open [2022-11-20 20:48:29,142 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2022-11-20 20:48:29,142 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2022-11-20 20:48:29,143 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_bcast_addr [2022-11-20 20:48:29,143 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_bcast_addr [2022-11-20 20:48:29,143 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-20 20:48:29,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-20 20:48:29,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:48:29,143 INFO L130 BoogieDeclarations]: Found specification of procedure send_channel_info_cmd [2022-11-20 20:48:29,143 INFO L138 BoogieDeclarations]: Found implementation of procedure send_channel_info_cmd [2022-11-20 20:48:29,143 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-20 20:48:29,144 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-20 20:48:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure format_ipmb_msg [2022-11-20 20:48:29,144 INFO L138 BoogieDeclarations]: Found implementation of procedure format_ipmb_msg [2022-11-20 20:48:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 20:48:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-20 20:48:29,144 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-20 20:48:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure free_recv_msg_list [2022-11-20 20:48:29,144 INFO L138 BoogieDeclarations]: Found implementation of procedure free_recv_msg_list [2022-11-20 20:48:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-20 20:48:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure handle_one_recv_msg [2022-11-20 20:48:29,145 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_one_recv_msg [2022-11-20 20:48:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure intf_err_seq [2022-11-20 20:48:29,145 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_err_seq [2022-11-20 20:48:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 20:48:29,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 20:48:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-20 20:48:29,146 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-20 20:48:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-20 20:48:29,146 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-20 20:48:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-20 20:48:29,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-20 20:48:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_timeout [2022-11-20 20:48:29,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_timeout [2022-11-20 20:48:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_smi_msg [2022-11-20 20:48:29,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_smi_msg [2022-11-20 20:48:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-20 20:48:29,147 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-20 20:48:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2022-11-20 20:48:29,147 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2022-11-20 20:48:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure handle_new_recv_msgs [2022-11-20 20:48:29,147 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_new_recv_msgs [2022-11-20 20:48:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure is_lan_addr [2022-11-20 20:48:29,148 INFO L138 BoogieDeclarations]: Found implementation of procedure is_lan_addr [2022-11-20 20:48:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-20 20:48:29,148 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-20 20:48:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure intf_free [2022-11-20 20:48:29,148 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_free [2022-11-20 20:48:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure smi_recv_tasklet [2022-11-20 20:48:29,148 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_recv_tasklet [2022-11-20 20:48:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure ipmb_checksum [2022-11-20 20:48:29,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmb_checksum [2022-11-20 20:48:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_response [2022-11-20 20:48:29,149 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_response [2022-11-20 20:48:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2022-11-20 20:48:29,149 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2022-11-20 20:48:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:48:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-20 20:48:29,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-20 20:48:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_recv_msg [2022-11-20 20:48:29,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_recv_msg [2022-11-20 20:48:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-20 20:48:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:48:29,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:48:30,218 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:48:30,226 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:48:30,990 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-20 20:48:39,982 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:48:41,449 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:48:41,449 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 20:48:41,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:48:41 BoogieIcfgContainer [2022-11-20 20:48:41,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:48:41,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:48:41,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:48:41,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:48:41,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:48:25" (1/3) ... [2022-11-20 20:48:41,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41749488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:48:41, skipping insertion in model container [2022-11-20 20:48:41,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:48:28" (2/3) ... [2022-11-20 20:48:41,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41749488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:48:41, skipping insertion in model container [2022-11-20 20:48:41,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:48:41" (3/3) ... [2022-11-20 20:48:41,462 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2022-11-20 20:48:41,482 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:48:41,482 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:48:41,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:48:41,562 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@36082fc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:48:41,563 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:48:41,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 1421 states, 874 states have (on average 1.4073226544622426) internal successors, (1230), 966 states have internal predecessors, (1230), 448 states have call successors, (448), 98 states have call predecessors, (448), 97 states have return successors, (430), 408 states have call predecessors, (430), 430 states have call successors, (430) [2022-11-20 20:48:41,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2022-11-20 20:48:41,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:48:41,619 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:48:41,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:48:41,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:48:41,625 INFO L85 PathProgramCache]: Analyzing trace with hash 888247751, now seen corresponding path program 1 times [2022-11-20 20:48:41,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:48:41,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483699441] [2022-11-20 20:48:41,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:48:41,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:48:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:48:43,713 INFO L134 CoverageAnalysis]: Checked inductivity of 7971 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7971 trivial. 0 not checked. [2022-11-20 20:48:43,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:48:43,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483699441] [2022-11-20 20:48:43,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483699441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:48:43,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:48:43,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:48:43,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743821256] [2022-11-20 20:48:43,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:48:43,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:48:43,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:48:43,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:48:43,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:48:43,769 INFO L87 Difference]: Start difference. First operand has 1421 states, 874 states have (on average 1.4073226544622426) internal successors, (1230), 966 states have internal predecessors, (1230), 448 states have call successors, (448), 98 states have call predecessors, (448), 97 states have return successors, (430), 408 states have call predecessors, (430), 430 states have call successors, (430) Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-20 20:48:47,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:48:47,260 INFO L93 Difference]: Finished difference Result 3976 states and 5988 transitions. [2022-11-20 20:48:47,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:48:47,264 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), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 583 [2022-11-20 20:48:47,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:48:47,320 INFO L225 Difference]: With dead ends: 3976 [2022-11-20 20:48:47,320 INFO L226 Difference]: Without dead ends: 2600 [2022-11-20 20:48:47,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:48:47,341 INFO L413 NwaCegarLoop]: 2283 mSDtfsCounter, 1987 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 4054 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:48:47,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1987 Valid, 4054 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 20:48:47,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2022-11-20 20:48:47,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2596. [2022-11-20 20:48:47,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 1629 states have (on average 1.3990178023327196) internal successors, (2279), 1770 states have internal predecessors, (2279), 777 states have call successors, (777), 190 states have call predecessors, (777), 189 states have return successors, (776), 731 states have call predecessors, (776), 776 states have call successors, (776) [2022-11-20 20:48:47,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3832 transitions. [2022-11-20 20:48:47,668 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3832 transitions. Word has length 583 [2022-11-20 20:48:47,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:48:47,675 INFO L495 AbstractCegarLoop]: Abstraction has 2596 states and 3832 transitions. [2022-11-20 20:48:47,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2022-11-20 20:48:47,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3832 transitions. [2022-11-20 20:48:47,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2022-11-20 20:48:47,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:48:47,699 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:48:47,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:48:47,699 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:48:47,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:48:47,700 INFO L85 PathProgramCache]: Analyzing trace with hash -917173068, now seen corresponding path program 1 times [2022-11-20 20:48:47,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:48:47,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196333998] [2022-11-20 20:48:47,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:48:47,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:48:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:48:49,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2022-11-20 20:48:49,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:48:49,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196333998] [2022-11-20 20:48:49,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196333998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:48:49,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:48:49,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:48:49,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435061469] [2022-11-20 20:48:49,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:48:49,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:48:49,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:48:49,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:48:49,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:48:49,401 INFO L87 Difference]: Start difference. First operand 2596 states and 3832 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-20 20:48:50,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:48:52,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:48:59,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:48:59,809 INFO L93 Difference]: Finished difference Result 10058 states and 15013 transitions. [2022-11-20 20:48:59,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:48:59,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 599 [2022-11-20 20:48:59,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:48:59,875 INFO L225 Difference]: With dead ends: 10058 [2022-11-20 20:48:59,875 INFO L226 Difference]: Without dead ends: 7568 [2022-11-20 20:48:59,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:48:59,893 INFO L413 NwaCegarLoop]: 2743 mSDtfsCounter, 5038 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 742 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5038 SdHoareTripleChecker+Valid, 5582 SdHoareTripleChecker+Invalid, 2127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 742 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:48:59,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5038 Valid, 5582 Invalid, 2127 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [742 Valid, 1384 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2022-11-20 20:48:59,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7568 states. [2022-11-20 20:49:00,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7568 to 7550. [2022-11-20 20:49:00,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7550 states, 4773 states have (on average 1.406871988267337) internal successors, (6715), 5184 states have internal predecessors, (6715), 2215 states have call successors, (2215), 562 states have call predecessors, (2215), 561 states have return successors, (2378), 2083 states have call predecessors, (2378), 2214 states have call successors, (2378) [2022-11-20 20:49:00,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7550 states to 7550 states and 11308 transitions. [2022-11-20 20:49:00,385 INFO L78 Accepts]: Start accepts. Automaton has 7550 states and 11308 transitions. Word has length 599 [2022-11-20 20:49:00,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:49:00,387 INFO L495 AbstractCegarLoop]: Abstraction has 7550 states and 11308 transitions. [2022-11-20 20:49:00,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-20 20:49:00,388 INFO L276 IsEmpty]: Start isEmpty. Operand 7550 states and 11308 transitions. [2022-11-20 20:49:00,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2022-11-20 20:49:00,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:49:00,404 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:49:00,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:49:00,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:49:00,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:49:00,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1574841416, now seen corresponding path program 1 times [2022-11-20 20:49:00,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:49:00,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192405659] [2022-11-20 20:49:00,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:49:00,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:49:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:49:01,761 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2022-11-20 20:49:01,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:49:01,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192405659] [2022-11-20 20:49:01,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192405659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:49:01,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:49:01,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:49:01,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915826368] [2022-11-20 20:49:01,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:49:01,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:49:01,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:49:01,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:49:01,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:49:01,767 INFO L87 Difference]: Start difference. First operand 7550 states and 11308 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-20 20:49:02,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:04,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:11,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:49:11,131 INFO L93 Difference]: Finished difference Result 29866 states and 45537 transitions. [2022-11-20 20:49:11,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:49:11,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 600 [2022-11-20 20:49:11,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:49:11,288 INFO L225 Difference]: With dead ends: 29866 [2022-11-20 20:49:11,288 INFO L226 Difference]: Without dead ends: 22422 [2022-11-20 20:49:11,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:49:11,333 INFO L413 NwaCegarLoop]: 2628 mSDtfsCounter, 5055 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5055 SdHoareTripleChecker+Valid, 5467 SdHoareTripleChecker+Invalid, 2116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:49:11,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5055 Valid, 5467 Invalid, 2116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [748 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-20 20:49:11,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22422 states. [2022-11-20 20:49:12,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22422 to 22404. [2022-11-20 20:49:12,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22404 states, 14205 states have (on average 1.408870116156283) internal successors, (20013), 15418 states have internal predecessors, (20013), 6521 states have call successors, (6521), 1678 states have call predecessors, (6521), 1677 states have return successors, (7812), 6139 states have call predecessors, (7812), 6520 states have call successors, (7812) [2022-11-20 20:49:12,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22404 states to 22404 states and 34346 transitions. [2022-11-20 20:49:12,871 INFO L78 Accepts]: Start accepts. Automaton has 22404 states and 34346 transitions. Word has length 600 [2022-11-20 20:49:12,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:49:12,872 INFO L495 AbstractCegarLoop]: Abstraction has 22404 states and 34346 transitions. [2022-11-20 20:49:12,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-20 20:49:12,873 INFO L276 IsEmpty]: Start isEmpty. Operand 22404 states and 34346 transitions. [2022-11-20 20:49:12,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2022-11-20 20:49:12,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:49:12,891 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:49:12,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:49:12,891 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:49:12,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:49:12,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1102435436, now seen corresponding path program 1 times [2022-11-20 20:49:12,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:49:12,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625347045] [2022-11-20 20:49:12,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:49:12,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:49:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:49:14,398 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2022-11-20 20:49:14,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:49:14,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625347045] [2022-11-20 20:49:14,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625347045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:49:14,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:49:14,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:49:14,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272393790] [2022-11-20 20:49:14,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:49:14,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:49:14,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:49:14,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:49:14,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:49:14,401 INFO L87 Difference]: Start difference. First operand 22404 states and 34346 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-20 20:49:24,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:49:24,572 INFO L93 Difference]: Finished difference Result 89258 states and 140301 transitions. [2022-11-20 20:49:24,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:49:24,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 601 [2022-11-20 20:49:24,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:49:25,270 INFO L225 Difference]: With dead ends: 89258 [2022-11-20 20:49:25,271 INFO L226 Difference]: Without dead ends: 66960 [2022-11-20 20:49:25,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:49:25,385 INFO L413 NwaCegarLoop]: 2628 mSDtfsCounter, 5053 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5053 SdHoareTripleChecker+Valid, 5467 SdHoareTripleChecker+Invalid, 2116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:49:25,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5053 Valid, 5467 Invalid, 2116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [748 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-20 20:49:25,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66960 states. [2022-11-20 20:49:29,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66960 to 66942. [2022-11-20 20:49:29,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66942 states, 42501 states have (on average 1.4088844968353686) internal successors, (59879), 46096 states have internal predecessors, (59879), 19415 states have call successors, (19415), 5026 states have call predecessors, (19415), 5025 states have return successors, (26750), 18307 states have call predecessors, (26750), 19414 states have call successors, (26750) [2022-11-20 20:49:30,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66942 states to 66942 states and 106044 transitions. [2022-11-20 20:49:30,605 INFO L78 Accepts]: Start accepts. Automaton has 66942 states and 106044 transitions. Word has length 601 [2022-11-20 20:49:30,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:49:30,606 INFO L495 AbstractCegarLoop]: Abstraction has 66942 states and 106044 transitions. [2022-11-20 20:49:30,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-20 20:49:30,607 INFO L276 IsEmpty]: Start isEmpty. Operand 66942 states and 106044 transitions. [2022-11-20 20:49:30,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2022-11-20 20:49:30,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:49:30,622 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:49:30,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:49:30,623 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:49:30,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:49:30,623 INFO L85 PathProgramCache]: Analyzing trace with hash -211168912, now seen corresponding path program 1 times [2022-11-20 20:49:30,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:49:30,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596699888] [2022-11-20 20:49:30,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:49:30,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:49:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:49:32,069 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2022-11-20 20:49:32,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:49:32,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596699888] [2022-11-20 20:49:32,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596699888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:49:32,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:49:32,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:49:32,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81104149] [2022-11-20 20:49:32,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:49:32,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:49:32,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:49:32,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:49:32,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:49:32,072 INFO L87 Difference]: Start difference. First operand 66942 states and 106044 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-20 20:49:34,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 20:49:48,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:49:48,271 INFO L93 Difference]: Finished difference Result 265773 states and 436346 transitions. [2022-11-20 20:49:48,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:49:48,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 602 [2022-11-20 20:49:48,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:49:50,470 INFO L225 Difference]: With dead ends: 265773 [2022-11-20 20:49:50,471 INFO L226 Difference]: Without dead ends: 198937 [2022-11-20 20:49:50,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:49:50,821 INFO L413 NwaCegarLoop]: 2628 mSDtfsCounter, 3925 mSDsluCounter, 4557 mSDsCounter, 0 mSdLazyCounter, 1580 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3925 SdHoareTripleChecker+Valid, 7185 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1580 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:49:50,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3925 Valid, 7185 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1580 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2022-11-20 20:49:51,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198937 states. [2022-11-20 20:50:01,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198937 to 198811. [2022-11-20 20:50:02,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198811 states, 126323 states have (on average 1.4087695827363187) internal successors, (177960), 137012 states have internal predecessors, (177960), 57527 states have call successors, (57527), 14933 states have call predecessors, (57527), 14960 states have return successors, (94608), 54273 states have call predecessors, (94608), 57526 states have call successors, (94608) [2022-11-20 20:50:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198811 states to 198811 states and 330095 transitions. [2022-11-20 20:50:04,466 INFO L78 Accepts]: Start accepts. Automaton has 198811 states and 330095 transitions. Word has length 602 [2022-11-20 20:50:04,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:50:04,468 INFO L495 AbstractCegarLoop]: Abstraction has 198811 states and 330095 transitions. [2022-11-20 20:50:04,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-20 20:50:04,468 INFO L276 IsEmpty]: Start isEmpty. Operand 198811 states and 330095 transitions. [2022-11-20 20:50:04,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2022-11-20 20:50:04,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:50:04,510 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 40, 40, 11, 11, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:50:04,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:50:04,511 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:50:04,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:50:04,512 INFO L85 PathProgramCache]: Analyzing trace with hash 628767501, now seen corresponding path program 1 times [2022-11-20 20:50:04,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:50:04,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974317387] [2022-11-20 20:50:04,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:50:04,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:50:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:50:06,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7974 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2022-11-20 20:50:06,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:50:06,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974317387] [2022-11-20 20:50:06,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974317387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:50:06,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:50:06,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:50:06,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278421679] [2022-11-20 20:50:06,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:50:06,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:50:06,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:50:06,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:50:06,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:50:06,027 INFO L87 Difference]: Start difference. First operand 198811 states and 330095 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-20 20:50:08,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []