./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-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0ffe84-9b22-407d-b2b8-fbbd8a783e27/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0ffe84-9b22-407d-b2b8-fbbd8a783e27/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0ffe84-9b22-407d-b2b8-fbbd8a783e27/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0ffe84-9b22-407d-b2b8-fbbd8a783e27/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0ffe84-9b22-407d-b2b8-fbbd8a783e27/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0ffe84-9b22-407d-b2b8-fbbd8a783e27/bin/utaipan-G1rejxKTta --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 20e4a1f568783894f17840aa5f338f3fb65a6686c2b0eb1bb7dec08049ab8d00 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:20:58,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:20:58,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:20:58,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:20:58,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:20:58,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:20:58,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:20:58,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:20:58,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:20:58,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:20:58,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:20:58,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:20:58,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:20:58,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:20:58,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:20:58,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:20:58,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:20:58,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:20:58,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:20:58,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:20:58,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:20:58,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:20:58,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:20:58,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:20:58,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:20:58,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:20:58,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:20:58,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:20:58,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:20:58,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:20:58,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:20:58,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:20:58,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:20:58,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:20:58,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:20:58,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:20:58,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:20:58,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:20:58,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:20:58,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:20:58,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:20:58,752 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0ffe84-9b22-407d-b2b8-fbbd8a783e27/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:20:58,794 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:20:58,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:20:58,795 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:20:58,795 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:20:58,796 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:20:58,797 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:20:58,797 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:20:58,797 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:20:58,798 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:20:58,798 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:20:58,799 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:20:58,800 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:20:58,800 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:20:58,800 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:20:58,800 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:20:58,801 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:20:58,801 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:20:58,801 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:20:58,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:20:58,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:20:58,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:20:58,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:20:58,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:20:58,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:20:58,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:20:58,804 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:20:58,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:20:58,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:20:58,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:20:58,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:20:58,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:20:58,807 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:20:58,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:20:58,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:20:58,808 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:20:58,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:20:58,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:20:58,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:20:58,809 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0ffe84-9b22-407d-b2b8-fbbd8a783e27/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0ffe84-9b22-407d-b2b8-fbbd8a783e27/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20e4a1f568783894f17840aa5f338f3fb65a6686c2b0eb1bb7dec08049ab8d00 [2022-10-17 17:20:59,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:20:59,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:20:59,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:20:59,150 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:20:59,151 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:20:59,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0ffe84-9b22-407d-b2b8-fbbd8a783e27/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2022-10-17 17:20:59,236 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0ffe84-9b22-407d-b2b8-fbbd8a783e27/bin/utaipan-G1rejxKTta/data/903c409e0/b228dff3ef6243c58a298901e496600d/FLAG5b2864eac [2022-10-17 17:20:59,991 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:20:59,992 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0ffe84-9b22-407d-b2b8-fbbd8a783e27/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2022-10-17 17:21:00,034 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0ffe84-9b22-407d-b2b8-fbbd8a783e27/bin/utaipan-G1rejxKTta/data/903c409e0/b228dff3ef6243c58a298901e496600d/FLAG5b2864eac [2022-10-17 17:21:00,530 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0ffe84-9b22-407d-b2b8-fbbd8a783e27/bin/utaipan-G1rejxKTta/data/903c409e0/b228dff3ef6243c58a298901e496600d [2022-10-17 17:21:00,533 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:21:00,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:21:00,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:21:00,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:21:00,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:21:00,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:21:00" (1/1) ... [2022-10-17 17:21:00,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6032bb92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:00, skipping insertion in model container [2022-10-17 17:21:00,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:21:00" (1/1) ... [2022-10-17 17:21:00,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:21:00,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:21:02,297 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_4b0ffe84-9b22-407d-b2b8-fbbd8a783e27/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i[175998,176011] [2022-10-17 17:21:02,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:21:02,489 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:21:02,882 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_4b0ffe84-9b22-407d-b2b8-fbbd8a783e27/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i[175998,176011] [2022-10-17 17:21:02,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:21:03,090 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:21:03,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:03 WrapperNode [2022-10-17 17:21:03,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:21:03,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:21:03,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:21:03,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:21:03,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:03" (1/1) ... [2022-10-17 17:21:03,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:03" (1/1) ... [2022-10-17 17:21:03,369 INFO L138 Inliner]: procedures = 199, calls = 2183, calls flagged for inlining = 73, calls inlined = 51, statements flattened = 3134 [2022-10-17 17:21:03,369 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:21:03,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:21:03,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:21:03,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:21:03,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:03" (1/1) ... [2022-10-17 17:21:03,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:03" (1/1) ... [2022-10-17 17:21:03,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:03" (1/1) ... [2022-10-17 17:21:03,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:03" (1/1) ... [2022-10-17 17:21:03,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:03" (1/1) ... [2022-10-17 17:21:03,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:03" (1/1) ... [2022-10-17 17:21:03,526 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:03" (1/1) ... [2022-10-17 17:21:03,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:03" (1/1) ... [2022-10-17 17:21:03,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:21:03,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:21:03,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:21:03,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:21:03,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:03" (1/1) ... [2022-10-17 17:21:03,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:21:03,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0ffe84-9b22-407d-b2b8-fbbd8a783e27/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:21:03,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0ffe84-9b22-407d-b2b8-fbbd8a783e27/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:21:03,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b0ffe84-9b22-407d-b2b8-fbbd8a783e27/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:21:03,651 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-10-17 17:21:03,651 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-10-17 17:21:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2022-10-17 17:21:03,652 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2022-10-17 17:21:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-10-17 17:21:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-17 17:21:03,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-17 17:21:03,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-17 17:21:03,653 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-17 17:21:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-10-17 17:21:03,653 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-10-17 17:21:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 17:21:03,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 17:21:03,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_abituguru_data [2022-10-17 17:21:03,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_abituguru_data [2022-10-17 17:21:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 17:21:03,654 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 17:21:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 17:21:03,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 17:21:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-10-17 17:21:03,655 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-10-17 17:21:03,655 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 17:21:03,655 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 17:21:03,655 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_resume [2022-10-17 17:21:03,655 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_resume [2022-10-17 17:21:03,655 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-10-17 17:21:03,655 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-10-17 17:21:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:21:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:21:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-10-17 17:21:03,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-10-17 17:21:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:21:03,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:21:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_abituguru_data [2022-10-17 17:21:03,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_abituguru_data [2022-10-17 17:21:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-10-17 17:21:03,657 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-10-17 17:21:03,657 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_send_address [2022-10-17 17:21:03,657 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_send_address [2022-10-17 17:21:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-10-17 17:21:03,658 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-10-17 17:21:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:21:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_wait [2022-10-17 17:21:03,658 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_wait [2022-10-17 17:21:03,658 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_remove [2022-10-17 17:21:03,659 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_remove [2022-10-17 17:21:03,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:21:03,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 17:21:03,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 17:21:03,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-10-17 17:21:03,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-10-17 17:21:03,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:21:03,660 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2022-10-17 17:21:03,660 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2022-10-17 17:21:03,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:21:03,660 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_write [2022-10-17 17:21:03,660 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_write [2022-10-17 17:21:03,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:21:03,661 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_ready [2022-10-17 17:21:03,661 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_ready [2022-10-17 17:21:03,661 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-10-17 17:21:03,661 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_suspend [2022-10-17 17:21:03,661 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_suspend [2022-10-17 17:21:03,662 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_read [2022-10-17 17:21:03,662 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_read [2022-10-17 17:21:03,662 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_probe [2022-10-17 17:21:03,662 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_probe [2022-10-17 17:21:03,662 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-10-17 17:21:03,662 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-10-17 17:21:03,662 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-10-17 17:21:03,663 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-10-17 17:21:03,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:21:03,663 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-10-17 17:21:03,663 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-10-17 17:21:03,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:21:03,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:21:03,664 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-10-17 17:21:03,664 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-10-17 17:21:04,154 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:21:04,157 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:21:13,758 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-17 17:21:15,964 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:21:16,726 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:21:16,726 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:21:16,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:21:16 BoogieIcfgContainer [2022-10-17 17:21:16,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:21:16,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:21:16,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:21:16,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:21:16,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:21:00" (1/3) ... [2022-10-17 17:21:16,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b15c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:21:16, skipping insertion in model container [2022-10-17 17:21:16,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:21:03" (2/3) ... [2022-10-17 17:21:16,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b15c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:21:16, skipping insertion in model container [2022-10-17 17:21:16,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:21:16" (3/3) ... [2022-10-17 17:21:16,741 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2022-10-17 17:21:16,761 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:21:16,762 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:21:16,832 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:21:16,838 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@43cae61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:21:16,839 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:21:16,846 INFO L276 IsEmpty]: Start isEmpty. Operand has 578 states, 405 states have (on average 1.4666666666666666) internal successors, (594), 419 states have internal predecessors, (594), 140 states have call successors, (140), 32 states have call predecessors, (140), 31 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) [2022-10-17 17:21:16,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:21:16,857 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:21:16,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:21:16,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:21:16,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:21:16,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1181888028, now seen corresponding path program 1 times [2022-10-17 17:21:16,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:21:16,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358458381] [2022-10-17 17:21:16,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:16,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:21:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:21:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:21:17,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:21:17,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358458381] [2022-10-17 17:21:17,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358458381] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:21:17,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:21:17,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:21:17,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978211610] [2022-10-17 17:21:17,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:21:17,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:21:17,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:21:17,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:21:17,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:21:17,755 INFO L87 Difference]: Start difference. First operand has 578 states, 405 states have (on average 1.4666666666666666) internal successors, (594), 419 states have internal predecessors, (594), 140 states have call successors, (140), 32 states have call predecessors, (140), 31 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:21:20,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:21:22,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:21:24,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:21:24,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:21:24,868 INFO L93 Difference]: Finished difference Result 1684 states and 2553 transitions. [2022-10-17 17:21:24,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:21:24,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-10-17 17:21:24,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:21:24,913 INFO L225 Difference]: With dead ends: 1684 [2022-10-17 17:21:24,913 INFO L226 Difference]: Without dead ends: 1095 [2022-10-17 17:21:24,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:21:24,930 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 833 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-10-17 17:21:24,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 1705 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 257 Invalid, 3 Unknown, 0 Unchecked, 6.9s Time] [2022-10-17 17:21:24,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2022-10-17 17:21:25,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1091. [2022-10-17 17:21:25,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 772 states have (on average 1.4520725388601037) internal successors, (1121), 784 states have internal predecessors, (1121), 258 states have call successors, (258), 61 states have call predecessors, (258), 60 states have return successors, (254), 253 states have call predecessors, (254), 253 states have call successors, (254) [2022-10-17 17:21:25,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1633 transitions. [2022-10-17 17:21:25,165 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1633 transitions. Word has length 15 [2022-10-17 17:21:25,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:21:25,166 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1633 transitions. [2022-10-17 17:21:25,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:21:25,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1633 transitions. [2022-10-17 17:21:25,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 17:21:25,176 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:21:25,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:21:25,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:21:25,177 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:21:25,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:21:25,178 INFO L85 PathProgramCache]: Analyzing trace with hash 296671097, now seen corresponding path program 1 times [2022-10-17 17:21:25,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:21:25,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601765143] [2022-10-17 17:21:25,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:25,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:21:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:21:25,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:21:25,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:21:25,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601765143] [2022-10-17 17:21:25,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601765143] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:21:25,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:21:25,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:21:25,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534218684] [2022-10-17 17:21:25,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:21:25,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:21:25,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:21:25,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:21:25,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:21:25,535 INFO L87 Difference]: Start difference. First operand 1091 states and 1633 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:21:27,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:21:29,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:21:31,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:21:32,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:21:32,523 INFO L93 Difference]: Finished difference Result 3123 states and 4679 transitions. [2022-10-17 17:21:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:21:32,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-10-17 17:21:32,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:21:32,548 INFO L225 Difference]: With dead ends: 3123 [2022-10-17 17:21:32,548 INFO L226 Difference]: Without dead ends: 2033 [2022-10-17 17:21:32,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:21:32,556 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 735 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-10-17 17:21:32,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1761 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 281 Invalid, 3 Unknown, 0 Unchecked, 6.7s Time] [2022-10-17 17:21:32,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2033 states. [2022-10-17 17:21:32,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2033 to 2020. [2022-10-17 17:21:32,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 1433 states have (on average 1.4452198185624563) internal successors, (2071), 1453 states have internal predecessors, (2071), 481 states have call successors, (481), 106 states have call predecessors, (481), 105 states have return successors, (479), 476 states have call predecessors, (479), 476 states have call successors, (479) [2022-10-17 17:21:32,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3031 transitions. [2022-10-17 17:21:32,746 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3031 transitions. Word has length 22 [2022-10-17 17:21:32,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:21:32,747 INFO L495 AbstractCegarLoop]: Abstraction has 2020 states and 3031 transitions. [2022-10-17 17:21:32,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:21:32,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3031 transitions. [2022-10-17 17:21:32,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 17:21:32,749 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:21:32,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:21:32,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:21:32,750 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:21:32,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:21:32,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1298425812, now seen corresponding path program 1 times [2022-10-17 17:21:32,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:21:32,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944212501] [2022-10-17 17:21:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:21:32,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:21:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:21:33,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:21:33,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:21:33,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944212501] [2022-10-17 17:21:33,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944212501] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:21:33,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:21:33,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:21:33,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232583232] [2022-10-17 17:21:33,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:21:33,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:21:33,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:21:33,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:21:33,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:21:33,145 INFO L87 Difference]: Start difference. First operand 2020 states and 3031 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 17:21:35,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []