./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 aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ce835e-e16c-452d-bfa5-b9fa0dd4d461/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ce835e-e16c-452d-bfa5-b9fa0dd4d461/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ce835e-e16c-452d-bfa5-b9fa0dd4d461/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ce835e-e16c-452d-bfa5-b9fa0dd4d461/bin/utaipan-EQgc7hIp5V/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_95ce835e-e16c-452d-bfa5-b9fa0dd4d461/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ce835e-e16c-452d-bfa5-b9fa0dd4d461/bin/utaipan-EQgc7hIp5V --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 --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:36:52,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:36:52,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:36:52,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:36:52,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:36:52,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:36:52,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:36:52,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:36:52,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:36:52,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:36:52,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:36:52,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:36:52,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:36:52,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:36:52,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:36:52,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:36:52,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:36:52,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:36:52,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:36:52,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:36:52,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:36:52,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:36:52,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:36:52,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:36:52,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:36:52,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:36:52,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:36:52,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:36:52,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:36:52,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:36:52,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:36:52,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:36:52,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:36:52,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:36:52,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:36:52,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:36:52,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:36:52,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:36:52,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:36:52,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:36:52,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:36:52,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ce835e-e16c-452d-bfa5-b9fa0dd4d461/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:36:52,840 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:36:52,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:36:52,840 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:36:52,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:36:52,847 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:36:52,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:36:52,848 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:36:52,848 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:36:52,848 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:36:52,849 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:36:52,850 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:36:52,850 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:36:52,850 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:36:52,850 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:36:52,851 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:36:52,851 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:36:52,851 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:36:52,851 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:36:52,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:36:52,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:36:52,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:36:52,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:36:52,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:36:52,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:36:52,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:36:52,854 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:36:52,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:36:52,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:36:52,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:36:52,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:36:52,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:36:52,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:36:52,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:36:52,857 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:36:52,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:36:52,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:36:52,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:36:52,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:36:52,858 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ce835e-e16c-452d-bfa5-b9fa0dd4d461/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ce835e-e16c-452d-bfa5-b9fa0dd4d461/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c13f17bef293e22dbc8fc00ce80e620ba1259ce3bd9f704a30527baafc650b9 [2021-11-23 03:36:53,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:36:53,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:36:53,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:36:53,109 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:36:53,110 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:36:53,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ce835e-e16c-452d-bfa5-b9fa0dd4d461/bin/utaipan-EQgc7hIp5V/../../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 [2021-11-23 03:36:53,210 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ce835e-e16c-452d-bfa5-b9fa0dd4d461/bin/utaipan-EQgc7hIp5V/data/c3c22b5ea/a3c23c8681f949bb894eee8a5bce53a3/FLAG7cd211f15 [2021-11-23 03:36:54,061 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:36:54,062 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ce835e-e16c-452d-bfa5-b9fa0dd4d461/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 [2021-11-23 03:36:54,114 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ce835e-e16c-452d-bfa5-b9fa0dd4d461/bin/utaipan-EQgc7hIp5V/data/c3c22b5ea/a3c23c8681f949bb894eee8a5bce53a3/FLAG7cd211f15 [2021-11-23 03:36:54,538 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ce835e-e16c-452d-bfa5-b9fa0dd4d461/bin/utaipan-EQgc7hIp5V/data/c3c22b5ea/a3c23c8681f949bb894eee8a5bce53a3 [2021-11-23 03:36:54,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:36:54,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:36:54,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:36:54,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:36:54,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:36:54,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:54" (1/1) ... [2021-11-23 03:36:54,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d3c004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:54, skipping insertion in model container [2021-11-23 03:36:54,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:54" (1/1) ... [2021-11-23 03:36:54,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:36:54,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:36:56,861 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ce835e-e16c-452d-bfa5-b9fa0dd4d461/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] [2021-11-23 03:36:56,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:36:57,036 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:36:57,546 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ce835e-e16c-452d-bfa5-b9fa0dd4d461/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] [2021-11-23 03:36:57,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:36:57,738 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:36:57,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:57 WrapperNode [2021-11-23 03:36:57,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:36:57,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:36:57,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:36:57,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:36:57,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:57" (1/1) ... [2021-11-23 03:36:57,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:57" (1/1) ... [2021-11-23 03:36:58,050 INFO L137 Inliner]: procedures = 314, calls = 3825, calls flagged for inlining = 118, calls inlined = 83, statements flattened = 4704 [2021-11-23 03:36:58,051 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:36:58,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:36:58,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:36:58,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:36:58,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:57" (1/1) ... [2021-11-23 03:36:58,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:57" (1/1) ... [2021-11-23 03:36:58,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:57" (1/1) ... [2021-11-23 03:36:58,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:57" (1/1) ... [2021-11-23 03:36:58,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:57" (1/1) ... [2021-11-23 03:36:58,347 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:57" (1/1) ... [2021-11-23 03:36:58,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:57" (1/1) ... [2021-11-23 03:36:58,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:36:58,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:36:58,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:36:58,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:36:58,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:57" (1/1) ... [2021-11-23 03:36:58,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:36:58,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ce835e-e16c-452d-bfa5-b9fa0dd4d461/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:36:58,435 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ce835e-e16c-452d-bfa5-b9fa0dd4d461/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:36:58,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ce835e-e16c-452d-bfa5-b9fa0dd4d461/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:36:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-23 03:36:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure smi_stats_proc_open [2021-11-23 03:36:58,480 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_stats_proc_open [2021-11-23 03:36:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-23 03:36:58,480 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-23 03:36:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:36:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_smi_msg_received [2021-11-23 03:36:58,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_smi_msg_received [2021-11-23 03:36:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:36:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 03:36:58,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 03:36:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 03:36:58,481 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 03:36:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure intf_find_seq [2021-11-23 03:36:58,481 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_find_seq [2021-11-23 03:36:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-23 03:36:58,481 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-23 03:36:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-23 03:36:58,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-23 03:36:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:36:58,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:36:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure handle_read_event_rsp [2021-11-23 03:36:58,482 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_read_event_rsp [2021-11-23 03:36:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2021-11-23 03:36:58,482 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2021-11-23 03:36:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure handle_ipmb_get_msg_cmd [2021-11-23 03:36:58,482 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_ipmb_get_msg_cmd [2021-11-23 03:36:58,483 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~bool~0~TO~VOID [2021-11-23 03:36:58,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~bool~0~TO~VOID [2021-11-23 03:36:58,483 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_poll [2021-11-23 03:36:58,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_poll [2021-11-23 03:36:58,483 INFO L130 BoogieDeclarations]: Found specification of procedure handle_lan_get_msg_cmd [2021-11-23 03:36:58,483 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_lan_get_msg_cmd [2021-11-23 03:36:58,483 INFO L130 BoogieDeclarations]: Found specification of procedure handle_bmc_rsp [2021-11-23 03:36:58,483 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_bmc_rsp [2021-11-23 03:36:58,484 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 03:36:58,484 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 03:36:58,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 03:36:58,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 03:36:58,484 INFO L130 BoogieDeclarations]: Found specification of procedure __write_once_size [2021-11-23 03:36:58,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __write_once_size [2021-11-23 03:36:58,485 INFO L130 BoogieDeclarations]: Found specification of procedure format_lan_msg [2021-11-23 03:36:58,485 INFO L138 BoogieDeclarations]: Found implementation of procedure format_lan_msg [2021-11-23 03:36:58,485 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 03:36:58,485 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 03:36:58,485 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:36:58,485 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:36:58,486 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_smi_msg [2021-11-23 03:36:58,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_smi_msg [2021-11-23 03:36:58,486 INFO L130 BoogieDeclarations]: Found specification of procedure copy_event_into_recv_msg [2021-11-23 03:36:58,487 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_event_into_recv_msg [2021-11-23 03:36:58,487 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_panic_request_and_wait [2021-11-23 03:36:58,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_panic_request_and_wait [2021-11-23 03:36:58,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2021-11-23 03:36:58,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2021-11-23 03:36:58,488 INFO L130 BoogieDeclarations]: Found specification of procedure handle_oem_get_msg_cmd [2021-11-23 03:36:58,488 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_oem_get_msg_cmd [2021-11-23 03:36:58,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:36:58,489 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 03:36:58,489 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 03:36:58,489 INFO L130 BoogieDeclarations]: Found specification of procedure proc_mkdir [2021-11-23 03:36:58,490 INFO L138 BoogieDeclarations]: Found implementation of procedure proc_mkdir [2021-11-23 03:36:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure need_waiter [2021-11-23 03:36:58,490 INFO L138 BoogieDeclarations]: Found implementation of procedure need_waiter [2021-11-23 03:36:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:36:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-23 03:36:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 03:36:58,490 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 03:36:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure smi_send [2021-11-23 03:36:58,491 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_send [2021-11-23 03:36:58,491 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2021-11-23 03:36:58,491 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2021-11-23 03:36:58,491 INFO L130 BoogieDeclarations]: Found specification of procedure smi_add_send_msg [2021-11-23 03:36:58,492 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_add_send_msg [2021-11-23 03:36:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure intf_next_seq [2021-11-23 03:36:58,492 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_next_seq [2021-11-23 03:36:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:36:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:36:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure find_cmd_rcvr [2021-11-23 03:36:58,492 INFO L138 BoogieDeclarations]: Found implementation of procedure find_cmd_rcvr [2021-11-23 03:36:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure PDE_DATA [2021-11-23 03:36:58,493 INFO L138 BoogieDeclarations]: Found implementation of procedure PDE_DATA [2021-11-23 03:36:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-23 03:36:58,493 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-23 03:36:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 03:36:58,494 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 03:36:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure i_ipmi_request [2021-11-23 03:36:58,494 INFO L138 BoogieDeclarations]: Found implementation of procedure i_ipmi_request [2021-11-23 03:36:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_init_msghandler [2021-11-23 03:36:58,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_init_msghandler [2021-11-23 03:36:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-23 03:36:58,495 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-23 03:36:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:36:58,496 INFO L130 BoogieDeclarations]: Found specification of procedure free_smi_msg_list [2021-11-23 03:36:58,496 INFO L138 BoogieDeclarations]: Found implementation of procedure free_smi_msg_list [2021-11-23 03:36:58,496 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 03:36:58,496 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 03:36:58,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:36:58,496 INFO L130 BoogieDeclarations]: Found specification of procedure clean_up_interface_data [2021-11-23 03:36:58,496 INFO L138 BoogieDeclarations]: Found implementation of procedure clean_up_interface_data [2021-11-23 03:36:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~ipmi_smi_t~0~X~$Pointer$~TO~VOID [2021-11-23 03:36:58,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~ipmi_smi_t~0~X~$Pointer$~TO~VOID [2021-11-23 03:36:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2021-11-23 03:36:58,497 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2021-11-23 03:36:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-11-23 03:36:58,497 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-11-23 03:36:58,497 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_recv_msg [2021-11-23 03:36:58,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_recv_msg [2021-11-23 03:36:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:36:58,498 INFO L130 BoogieDeclarations]: Found specification of procedure handle_ipmb_get_msg_rsp [2021-11-23 03:36:58,498 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_ipmb_get_msg_rsp [2021-11-23 03:36:58,499 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_err_response [2021-11-23 03:36:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_err_response [2021-11-23 03:36:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2021-11-23 03:36:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2021-11-23 03:36:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 03:36:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 03:36:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-23 03:36:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-23 03:36:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_rcu [2021-11-23 03:36:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_rcu [2021-11-23 03:36:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2021-11-23 03:36:58,509 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2021-11-23 03:36:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure smi_ipmb_proc_open [2021-11-23 03:36:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_ipmb_proc_open [2021-11-23 03:36:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure maintenance_mode_update [2021-11-23 03:36:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure maintenance_mode_update [2021-11-23 03:36:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 03:36:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 03:36:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-23 03:36:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-23 03:36:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:36:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2021-11-23 03:36:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2021-11-23 03:36:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-23 03:36:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-23 03:36:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:36:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:36:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2021-11-23 03:36:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2021-11-23 03:36:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_addr [2021-11-23 03:36:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_addr [2021-11-23 03:36:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2021-11-23 03:36:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2021-11-23 03:36:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-23 03:36:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-23 03:36:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:36:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure handle_lan_get_msg_rsp [2021-11-23 03:36:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_lan_get_msg_rsp [2021-11-23 03:36:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-23 03:36:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-23 03:36:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure smi_version_proc_open [2021-11-23 03:36:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_version_proc_open [2021-11-23 03:36:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2021-11-23 03:36:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2021-11-23 03:36:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure is_ipmb_bcast_addr [2021-11-23 03:36:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure is_ipmb_bcast_addr [2021-11-23 03:36:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-23 03:36:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-23 03:36:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:36:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure send_channel_info_cmd [2021-11-23 03:36:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure send_channel_info_cmd [2021-11-23 03:36:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-23 03:36:58,514 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-23 03:36:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure format_ipmb_msg [2021-11-23 03:36:58,514 INFO L138 BoogieDeclarations]: Found implementation of procedure format_ipmb_msg [2021-11-23 03:36:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:36:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-23 03:36:58,514 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-23 03:36:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure free_recv_msg_list [2021-11-23 03:36:58,514 INFO L138 BoogieDeclarations]: Found implementation of procedure free_recv_msg_list [2021-11-23 03:36:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 03:36:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure handle_one_recv_msg [2021-11-23 03:36:58,515 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_one_recv_msg [2021-11-23 03:36:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure intf_err_seq [2021-11-23 03:36:58,515 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_err_seq [2021-11-23 03:36:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:36:58,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:36:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-23 03:36:58,515 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-23 03:36:58,515 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-23 03:36:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-23 03:36:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-23 03:36:58,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-23 03:36:58,516 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_timeout [2021-11-23 03:36:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_timeout [2021-11-23 03:36:58,517 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_alloc_smi_msg [2021-11-23 03:36:58,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_alloc_smi_msg [2021-11-23 03:36:58,518 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-23 03:36:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-23 03:36:58,518 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2021-11-23 03:36:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2021-11-23 03:36:58,518 INFO L130 BoogieDeclarations]: Found specification of procedure handle_new_recv_msgs [2021-11-23 03:36:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_new_recv_msgs [2021-11-23 03:36:58,518 INFO L130 BoogieDeclarations]: Found specification of procedure is_lan_addr [2021-11-23 03:36:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure is_lan_addr [2021-11-23 03:36:58,518 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 03:36:58,518 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 03:36:58,519 INFO L130 BoogieDeclarations]: Found specification of procedure intf_free [2021-11-23 03:36:58,519 INFO L138 BoogieDeclarations]: Found implementation of procedure intf_free [2021-11-23 03:36:58,519 INFO L130 BoogieDeclarations]: Found specification of procedure smi_recv_tasklet [2021-11-23 03:36:58,519 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_recv_tasklet [2021-11-23 03:36:58,519 INFO L130 BoogieDeclarations]: Found specification of procedure ipmb_checksum [2021-11-23 03:36:58,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmb_checksum [2021-11-23 03:36:58,519 INFO L130 BoogieDeclarations]: Found specification of procedure deliver_response [2021-11-23 03:36:58,519 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver_response [2021-11-23 03:36:58,519 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2021-11-23 03:36:58,520 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2021-11-23 03:36:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:36:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-23 03:36:58,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-23 03:36:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_recv_msg [2021-11-23 03:36:58,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_recv_msg [2021-11-23 03:36:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-23 03:36:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:36:58,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:36:59,446 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:36:59,450 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:37:00,114 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 03:37:08,252 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:37:09,376 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:37:09,377 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 03:37:09,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:37:09 BoogieIcfgContainer [2021-11-23 03:37:09,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:37:09,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:37:09,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:37:09,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:37:09,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:36:54" (1/3) ... [2021-11-23 03:37:09,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610ffe79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:37:09, skipping insertion in model container [2021-11-23 03:37:09,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:57" (2/3) ... [2021-11-23 03:37:09,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610ffe79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:37:09, skipping insertion in model container [2021-11-23 03:37:09,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:37:09" (3/3) ... [2021-11-23 03:37:09,390 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--char--ipmi--ipmi_msghandler.ko-entry_point.cil.out.i [2021-11-23 03:37:09,400 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:37:09,401 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:37:09,471 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:37:09,485 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:37:09,485 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:37:09,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 1401 states, 854 states have (on average 1.3934426229508197) internal successors, (1190), 946 states have internal predecessors, (1190), 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) [2021-11-23 03:37:09,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2021-11-23 03:37:09,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:09,676 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:37:09,677 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:37:09,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:09,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1145873869, now seen corresponding path program 1 times [2021-11-23 03:37:09,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:09,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124714808] [2021-11-23 03:37:09,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:09,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:10,998 INFO L134 CoverageAnalysis]: Checked inductivity of 7971 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7971 trivial. 0 not checked. [2021-11-23 03:37:10,998 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:10,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124714808] [2021-11-23 03:37:10,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124714808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:10,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:10,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:37:11,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724465567] [2021-11-23 03:37:11,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:11,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:37:11,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:11,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:37:11,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:37:11,102 INFO L87 Difference]: Start difference. First operand has 1401 states, 854 states have (on average 1.3934426229508197) internal successors, (1190), 946 states have internal predecessors, (1190), 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) [2021-11-23 03:37:13,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:13,121 INFO L93 Difference]: Finished difference Result 3916 states and 5868 transitions. [2021-11-23 03:37:13,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:37:13,124 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 [2021-11-23 03:37:13,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:13,185 INFO L225 Difference]: With dead ends: 3916 [2021-11-23 03:37:13,185 INFO L226 Difference]: Without dead ends: 2560 [2021-11-23 03:37:13,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:37:13,210 INFO L933 BasicCegarLoop]: 2252 mSDtfsCounter, 1947 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1947 SdHoareTripleChecker+Valid, 3992 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:13,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1947 Valid, 3992 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 03:37:13,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2021-11-23 03:37:13,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 2556. [2021-11-23 03:37:13,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2556 states, 1589 states have (on average 1.3838892385147892) internal successors, (2199), 1730 states have internal predecessors, (2199), 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) [2021-11-23 03:37:13,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2556 states to 2556 states and 3752 transitions. [2021-11-23 03:37:13,501 INFO L78 Accepts]: Start accepts. Automaton has 2556 states and 3752 transitions. Word has length 583 [2021-11-23 03:37:13,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:13,505 INFO L470 AbstractCegarLoop]: Abstraction has 2556 states and 3752 transitions. [2021-11-23 03:37:13,505 INFO L471 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) [2021-11-23 03:37:13,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2556 states and 3752 transitions. [2021-11-23 03:37:13,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2021-11-23 03:37:13,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:13,532 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:37:13,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:37:13,533 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:37:13,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:13,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1322664644, now seen corresponding path program 1 times [2021-11-23 03:37:13,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:13,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13059199] [2021-11-23 03:37:13,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:13,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:14,529 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2021-11-23 03:37:14,529 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:14,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13059199] [2021-11-23 03:37:14,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13059199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:14,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:14,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:37:14,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994496200] [2021-11-23 03:37:14,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:14,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:37:14,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:14,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:37:14,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:37:14,539 INFO L87 Difference]: Start difference. First operand 2556 states and 3752 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) [2021-11-23 03:37:21,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:21,075 INFO L93 Difference]: Finished difference Result 9898 states and 14693 transitions. [2021-11-23 03:37:21,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:37:21,076 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 [2021-11-23 03:37:21,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:21,147 INFO L225 Difference]: With dead ends: 9898 [2021-11-23 03:37:21,147 INFO L226 Difference]: Without dead ends: 7448 [2021-11-23 03:37:21,161 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:37:21,163 INFO L933 BasicCegarLoop]: 2712 mSDtfsCounter, 3848 mSDsluCounter, 3857 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3848 SdHoareTripleChecker+Valid, 6207 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:21,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3848 Valid, 6207 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-11-23 03:37:21,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7448 states. [2021-11-23 03:37:21,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7448 to 7430. [2021-11-23 03:37:21,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7430 states, 4653 states have (on average 1.3915753277455405) internal successors, (6475), 5064 states have internal predecessors, (6475), 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) [2021-11-23 03:37:21,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7430 states to 7430 states and 11068 transitions. [2021-11-23 03:37:21,734 INFO L78 Accepts]: Start accepts. Automaton has 7430 states and 11068 transitions. Word has length 599 [2021-11-23 03:37:21,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:21,737 INFO L470 AbstractCegarLoop]: Abstraction has 7430 states and 11068 transitions. [2021-11-23 03:37:21,737 INFO L471 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) [2021-11-23 03:37:21,738 INFO L276 IsEmpty]: Start isEmpty. Operand 7430 states and 11068 transitions. [2021-11-23 03:37:21,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2021-11-23 03:37:21,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:21,748 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:37:21,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:37:21,748 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:37:21,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:21,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1208262060, now seen corresponding path program 1 times [2021-11-23 03:37:21,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:21,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961136620] [2021-11-23 03:37:21,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:21,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2021-11-23 03:37:22,392 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:22,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961136620] [2021-11-23 03:37:22,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961136620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:22,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:22,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:37:22,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829291420] [2021-11-23 03:37:22,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:22,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:37:22,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:22,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:37:22,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:37:22,401 INFO L87 Difference]: Start difference. First operand 7430 states and 11068 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) [2021-11-23 03:37:28,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:28,188 INFO L93 Difference]: Finished difference Result 29386 states and 44577 transitions. [2021-11-23 03:37:28,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:37:28,189 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 [2021-11-23 03:37:28,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:28,384 INFO L225 Difference]: With dead ends: 29386 [2021-11-23 03:37:28,385 INFO L226 Difference]: Without dead ends: 22062 [2021-11-23 03:37:28,434 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:37:28,438 INFO L933 BasicCegarLoop]: 2597 mSDtfsCounter, 4935 mSDsluCounter, 3093 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4935 SdHoareTripleChecker+Valid, 5374 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:28,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4935 Valid, 5374 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [748 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-11-23 03:37:28,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22062 states. [2021-11-23 03:37:29,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22062 to 22044. [2021-11-23 03:37:29,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22044 states, 13845 states have (on average 1.3934994582881908) internal successors, (19293), 15058 states have internal predecessors, (19293), 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) [2021-11-23 03:37:29,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22044 states to 22044 states and 33626 transitions. [2021-11-23 03:37:29,816 INFO L78 Accepts]: Start accepts. Automaton has 22044 states and 33626 transitions. Word has length 600 [2021-11-23 03:37:29,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:29,817 INFO L470 AbstractCegarLoop]: Abstraction has 22044 states and 33626 transitions. [2021-11-23 03:37:29,818 INFO L471 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) [2021-11-23 03:37:29,819 INFO L276 IsEmpty]: Start isEmpty. Operand 22044 states and 33626 transitions. [2021-11-23 03:37:29,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2021-11-23 03:37:29,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:29,827 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:37:29,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:37:29,828 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:37:29,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:29,829 INFO L85 PathProgramCache]: Analyzing trace with hash -748058884, now seen corresponding path program 1 times [2021-11-23 03:37:29,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:29,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622840237] [2021-11-23 03:37:29,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:29,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:30,568 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2021-11-23 03:37:30,568 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:30,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622840237] [2021-11-23 03:37:30,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622840237] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:30,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:30,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:37:30,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979839257] [2021-11-23 03:37:30,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:30,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:37:30,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:30,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:37:30,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:37:30,571 INFO L87 Difference]: Start difference. First operand 22044 states and 33626 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) [2021-11-23 03:37:37,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:37,095 INFO L93 Difference]: Finished difference Result 87818 states and 137421 transitions. [2021-11-23 03:37:37,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:37:37,096 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 [2021-11-23 03:37:37,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:37,759 INFO L225 Difference]: With dead ends: 87818 [2021-11-23 03:37:37,759 INFO L226 Difference]: Without dead ends: 65880 [2021-11-23 03:37:37,878 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:37:37,882 INFO L933 BasicCegarLoop]: 2597 mSDtfsCounter, 4933 mSDsluCounter, 3093 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4933 SdHoareTripleChecker+Valid, 5374 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:37,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4933 Valid, 5374 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [748 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-23 03:37:37,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65880 states. [2021-11-23 03:37:41,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65880 to 65862. [2021-11-23 03:37:42,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65862 states, 41421 states have (on average 1.3934719103836217) internal successors, (57719), 45016 states have internal predecessors, (57719), 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) [2021-11-23 03:37:42,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65862 states to 65862 states and 103884 transitions. [2021-11-23 03:37:42,893 INFO L78 Accepts]: Start accepts. Automaton has 65862 states and 103884 transitions. Word has length 601 [2021-11-23 03:37:42,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:42,895 INFO L470 AbstractCegarLoop]: Abstraction has 65862 states and 103884 transitions. [2021-11-23 03:37:42,896 INFO L471 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) [2021-11-23 03:37:42,897 INFO L276 IsEmpty]: Start isEmpty. Operand 65862 states and 103884 transitions. [2021-11-23 03:37:42,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2021-11-23 03:37:42,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:42,908 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:37:42,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:37:42,909 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:37:42,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:42,910 INFO L85 PathProgramCache]: Analyzing trace with hash 325693156, now seen corresponding path program 1 times [2021-11-23 03:37:42,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:42,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714365758] [2021-11-23 03:37:42,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:42,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:43,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7969 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2021-11-23 03:37:43,707 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:43,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714365758] [2021-11-23 03:37:43,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714365758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:43,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:43,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:37:43,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038430673] [2021-11-23 03:37:43,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:43,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:37:43,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:43,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:37:43,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:37:43,710 INFO L87 Difference]: Start difference. First operand 65862 states and 103884 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) [2021-11-23 03:37:54,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:54,370 INFO L93 Difference]: Finished difference Result 261453 states and 427706 transitions. [2021-11-23 03:37:54,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:37:54,370 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 [2021-11-23 03:37:54,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:56,050 INFO L225 Difference]: With dead ends: 261453 [2021-11-23 03:37:56,050 INFO L226 Difference]: Without dead ends: 195697 [2021-11-23 03:37:56,284 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:37:56,285 INFO L933 BasicCegarLoop]: 2597 mSDtfsCounter, 4931 mSDsluCounter, 3093 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4931 SdHoareTripleChecker+Valid, 5374 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:56,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4931 Valid, 5374 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [748 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-11-23 03:37:56,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195697 states. [2021-11-23 03:38:05,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195697 to 195571. [2021-11-23 03:38:05,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195571 states, 123083 states have (on average 1.3932062104433593) internal successors, (171480), 133772 states have internal predecessors, (171480), 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) [2021-11-23 03:38:07,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195571 states to 195571 states and 323615 transitions. [2021-11-23 03:38:07,322 INFO L78 Accepts]: Start accepts. Automaton has 195571 states and 323615 transitions. Word has length 602 [2021-11-23 03:38:07,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:38:07,323 INFO L470 AbstractCegarLoop]: Abstraction has 195571 states and 323615 transitions. [2021-11-23 03:38:07,324 INFO L471 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) [2021-11-23 03:38:07,324 INFO L276 IsEmpty]: Start isEmpty. Operand 195571 states and 323615 transitions. [2021-11-23 03:38:07,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2021-11-23 03:38:07,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:38:07,359 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:38:07,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:38:07,360 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:38:07,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:38:07,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1647817270, now seen corresponding path program 1 times [2021-11-23 03:38:07,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:38:07,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404494888] [2021-11-23 03:38:07,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:07,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:38:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 7974 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7969 trivial. 0 not checked. [2021-11-23 03:38:08,529 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:38:08,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404494888] [2021-11-23 03:38:08,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404494888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:38:08,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:38:08,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:38:08,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990787522] [2021-11-23 03:38:08,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:38:08,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:38:08,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:38:08,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:38:08,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:38:08,532 INFO L87 Difference]: Start difference. First operand 195571 states and 323615 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) [2021-11-23 03:38:17,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:38:17,560 INFO L93 Difference]: Finished difference Result 390955 states and 646992 transitions. [2021-11-23 03:38:17,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:38:17,561 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 641 [2021-11-23 03:38:17,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:38:18,665 INFO L225 Difference]: With dead ends: 390955 [2021-11-23 03:38:18,665 INFO L226 Difference]: Without dead ends: 195490 [2021-11-23 03:38:19,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:38:19,839 INFO L933 BasicCegarLoop]: 1845 mSDtfsCounter, 2008 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:38:19,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2008 Valid, 1845 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 03:38:20,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195490 states.