./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba --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 24e26672720ca570553d18d605e2ce47cd111ea61f1f4153430b6ee115172355 --- 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-b5237d8 [2022-11-22 01:59:02,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:59:02,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:59:02,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:59:02,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:59:02,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:59:02,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:59:02,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:59:02,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:59:02,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:59:02,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:59:02,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:59:02,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:59:02,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:59:02,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:59:02,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:59:02,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:59:02,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:59:02,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:59:02,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:59:02,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:59:02,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:59:02,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:59:02,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:59:02,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:59:02,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:59:02,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:59:02,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:59:02,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:59:02,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:59:02,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:59:02,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:59:02,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:59:02,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:59:02,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:59:02,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:59:02,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:59:02,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:59:02,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:59:02,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:59:02,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:59:02,810 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:59:02,849 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:59:02,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:59:02,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:59:02,851 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:59:02,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:59:02,852 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:59:02,853 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:59:02,853 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:59:02,853 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:59:02,853 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:59:02,854 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:59:02,855 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:59:02,855 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:59:02,855 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:59:02,856 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:59:02,856 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:59:02,856 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:59:02,856 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:59:02,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:59:02,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:59:02,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:59:02,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:59:02,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:59:02,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:59:02,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:59:02,859 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:59:02,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:59:02,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:59:02,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:59:02,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:59:02,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:59:02,862 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:59:02,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:59:02,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:59:02,863 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:59:02,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:59:02,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:59:02,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:59:02,864 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_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24e26672720ca570553d18d605e2ce47cd111ea61f1f4153430b6ee115172355 [2022-11-22 01:59:03,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:59:03,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:59:03,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:59:03,268 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:59:03,268 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:59:03,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2022-11-22 01:59:06,655 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:59:07,650 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:59:07,651 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2022-11-22 01:59:07,757 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/data/2ca88d21a/d30f3bf4eb884643b51b22d349b6e67d/FLAG255b64a8c [2022-11-22 01:59:07,778 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/data/2ca88d21a/d30f3bf4eb884643b51b22d349b6e67d [2022-11-22 01:59:07,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:59:07,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:59:07,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:59:07,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:59:07,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:59:07,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:59:07" (1/1) ... [2022-11-22 01:59:07,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@547f7219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:07, skipping insertion in model container [2022-11-22 01:59:07,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:59:07" (1/1) ... [2022-11-22 01:59:07,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:59:08,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:59:12,885 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588527,588540] [2022-11-22 01:59:12,890 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588672,588685] [2022-11-22 01:59:12,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:59:13,079 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:59:13,958 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588527,588540] [2022-11-22 01:59:13,960 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588672,588685] [2022-11-22 01:59:13,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:59:14,208 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:59:14,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:14 WrapperNode [2022-11-22 01:59:14,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:59:14,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:59:14,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:59:14,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:59:14,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:14" (1/1) ... [2022-11-22 01:59:14,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:14" (1/1) ... [2022-11-22 01:59:14,825 INFO L138 Inliner]: procedures = 538, calls = 4352, calls flagged for inlining = 263, calls inlined = 250, statements flattened = 8609 [2022-11-22 01:59:14,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:59:14,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:59:14,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:59:14,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:59:14,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:14" (1/1) ... [2022-11-22 01:59:14,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:14" (1/1) ... [2022-11-22 01:59:14,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:14" (1/1) ... [2022-11-22 01:59:14,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:14" (1/1) ... [2022-11-22 01:59:15,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:14" (1/1) ... [2022-11-22 01:59:15,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:14" (1/1) ... [2022-11-22 01:59:15,251 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:14" (1/1) ... [2022-11-22 01:59:15,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:14" (1/1) ... [2022-11-22 01:59:15,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:59:15,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:59:15,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:59:15,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:59:15,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:14" (1/1) ... [2022-11-22 01:59:15,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:59:15,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:59:15,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:59:15,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:59:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure video_open [2022-11-22 01:59:15,462 INFO L138 BoogieDeclarations]: Found implementation of procedure video_open [2022-11-22 01:59:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 01:59:15,462 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 01:59:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamon [2022-11-22 01:59:15,462 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamon [2022-11-22 01:59:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_unregister_video [2022-11-22 01:59:15,463 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_unregister_video [2022-11-22 01:59:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_fmt_vid_cap [2022-11-22 01:59:15,463 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_fmt_vid_cap [2022-11-22 01:59:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:59:15,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:59:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_input [2022-11-22 01:59:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_input [2022-11-22 01:59:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_reqbufs [2022-11-22 01:59:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_reqbufs [2022-11-22 01:59:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_fmt_vid_cap [2022-11-22 01:59:15,464 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_fmt_vid_cap [2022-11-22 01:59:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-22 01:59:15,465 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-22 01:59:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_tvnorm [2022-11-22 01:59:15,466 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_tvnorm [2022-11-22 01:59:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_tvaudio [2022-11-22 01:59:15,467 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_tvaudio [2022-11-22 01:59:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_s_vid_ctrl [2022-11-22 01:59:15,468 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_s_vid_ctrl [2022-11-22 01:59:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure res_free [2022-11-22 01:59:15,468 INFO L138 BoogieDeclarations]: Found implementation of procedure res_free [2022-11-22 01:59:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_slock_of_cx8800_dev [2022-11-22 01:59:15,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_slock_of_cx8800_dev [2022-11-22 01:59:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-22 01:59:15,469 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-22 01:59:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_to_dma [2022-11-22 01:59:15,470 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_to_dma [2022-11-22 01:59:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_shutdown [2022-11-22 01:59:15,470 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_shutdown [2022-11-22 01:59:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-22 01:59:15,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-22 01:59:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fmt_vid_cap [2022-11-22 01:59:15,471 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fmt_vid_cap [2022-11-22 01:59:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_newstation [2022-11-22 01:59:15,471 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_newstation [2022-11-22 01:59:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_std [2022-11-22 01:59:15,472 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_std [2022-11-22 01:59:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_vdev_init [2022-11-22 01:59:15,472 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_vdev_init [2022-11-22 01:59:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure video_mmap [2022-11-22 01:59:15,473 INFO L138 BoogieDeclarations]: Found implementation of procedure video_mmap [2022-11-22 01:59:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-22 01:59:15,473 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-22 01:59:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 01:59:15,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 01:59:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 01:59:15,474 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 01:59:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer [2022-11-22 01:59:15,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer [2022-11-22 01:59:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2022-11-22 01:59:15,475 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2022-11-22 01:59:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 01:59:15,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 01:59:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_poll [2022-11-22 01:59:15,475 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_poll [2022-11-22 01:59:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_frequency [2022-11-22 01:59:15,476 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_frequency [2022-11-22 01:59:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querybuf [2022-11-22 01:59:15,476 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querybuf [2022-11-22 01:59:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_register [2022-11-22 01:59:15,477 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_register [2022-11-22 01:59:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2022-11-22 01:59:15,478 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2022-11-22 01:59:15,478 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_setup [2022-11-22 01:59:15,478 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_setup [2022-11-22 01:59:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:59:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_stereo [2022-11-22 01:59:15,479 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_stereo [2022-11-22 01:59:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_vbi_fmt [2022-11-22 01:59:15,480 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_vbi_fmt [2022-11-22 01:59:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_102 [2022-11-22 01:59:15,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_102 [2022-11-22 01:59:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-22 01:59:15,481 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-22 01:59:15,482 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_audio_thread [2022-11-22 01:59:15,482 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_cap [2022-11-22 01:59:15,482 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_cap [2022-11-22 01:59:15,482 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2022-11-22 01:59:15,482 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2022-11-22 01:59:15,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 01:59:15,483 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2022-11-22 01:59:15,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2022-11-22 01:59:15,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 01:59:15,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 01:59:15,484 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_restart_vbi_queue [2022-11-22 01:59:15,484 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_restart_vbi_queue [2022-11-22 01:59:15,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:59:15,485 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_finidev [2022-11-22 01:59:15,485 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_finidev [2022-11-22 01:59:15,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 01:59:15,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 01:59:15,486 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2022-11-22 01:59:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2022-11-22 01:59:15,486 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_querycap [2022-11-22 01:59:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_querycap [2022-11-22 01:59:15,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 01:59:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 01:59:15,487 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_freq [2022-11-22 01:59:15,487 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_freq [2022-11-22 01:59:15,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 01:59:15,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 01:59:15,489 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_s_aud_ctrl [2022-11-22 01:59:15,491 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_s_aud_ctrl [2022-11-22 01:59:15,492 INFO L130 BoogieDeclarations]: Found specification of procedure video_read [2022-11-22 01:59:15,492 INFO L138 BoogieDeclarations]: Found implementation of procedure video_read [2022-11-22 01:59:15,494 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-22 01:59:15,495 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-22 01:59:15,495 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_video_mux [2022-11-22 01:59:15,496 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_video_mux [2022-11-22 01:59:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 01:59:15,497 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 01:59:15,502 INFO L130 BoogieDeclarations]: Found specification of procedure video_is_registered [2022-11-22 01:59:15,503 INFO L138 BoogieDeclarations]: Found implementation of procedure video_is_registered [2022-11-22 01:59:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2022-11-22 01:59:15,503 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_subscribe_event [2022-11-22 01:59:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure video_unregister_device [2022-11-22 01:59:15,503 INFO L138 BoogieDeclarations]: Found implementation of procedure video_unregister_device [2022-11-22 01:59:15,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:59:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 01:59:15,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 01:59:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 01:59:15,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 01:59:15,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-22 01:59:15,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-22 01:59:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-22 01:59:15,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-22 01:59:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_queue_sg_init [2022-11-22 01:59:15,505 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_queue_sg_init [2022-11-22 01:59:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:59:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 01:59:15,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 01:59:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:59:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure video_release [2022-11-22 01:59:15,506 INFO L138 BoogieDeclarations]: Found implementation of procedure video_release [2022-11-22 01:59:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:59:15,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:59:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:59:15,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:59:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure restart_video_queue [2022-11-22 01:59:15,507 INFO L138 BoogieDeclarations]: Found implementation of procedure restart_video_queue [2022-11-22 01:59:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-22 01:59:15,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-22 01:59:15,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-22 01:59:15,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-22 01:59:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_qbuf [2022-11-22 01:59:15,508 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_qbuf [2022-11-22 01:59:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_wakeup [2022-11-22 01:59:15,508 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_wakeup [2022-11-22 01:59:15,508 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-22 01:59:15,508 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-22 01:59:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_s_ctrl [2022-11-22 01:59:15,509 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_s_ctrl [2022-11-22 01:59:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 01:59:15,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 01:59:15,509 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_iolock [2022-11-22 01:59:15,510 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_iolock [2022-11-22 01:59:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_enum_input [2022-11-22 01:59:15,510 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_enum_input [2022-11-22 01:59:15,510 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_sram_channel_dump [2022-11-22 01:59:15,510 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_sram_channel_dump [2022-11-22 01:59:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure video_set_drvdata [2022-11-22 01:59:15,511 INFO L138 BoogieDeclarations]: Found implementation of procedure video_set_drvdata [2022-11-22 01:59:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_tuner [2022-11-22 01:59:15,511 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_tuner [2022-11-22 01:59:15,511 INFO L130 BoogieDeclarations]: Found specification of procedure res_check [2022-11-22 01:59:15,511 INFO L138 BoogieDeclarations]: Found implementation of procedure res_check [2022-11-22 01:59:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure format_by_fourcc [2022-11-22 01:59:15,512 INFO L138 BoogieDeclarations]: Found implementation of procedure format_by_fourcc [2022-11-22 01:59:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_risc_buffer [2022-11-22 01:59:15,512 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_risc_buffer [2022-11-22 01:59:15,512 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-22 01:59:15,512 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-22 01:59:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-22 01:59:15,513 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-22 01:59:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2022-11-22 01:59:15,513 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_unsubscribe [2022-11-22 01:59:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:59:15,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:59:15,513 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_risc_stopper [2022-11-22 01:59:15,514 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_risc_stopper [2022-11-22 01:59:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-22 01:59:15,514 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-22 01:59:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-22 01:59:15,514 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-22 01:59:15,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 01:59:15,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 01:59:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_std [2022-11-22 01:59:15,515 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_std [2022-11-22 01:59:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamoff [2022-11-22 01:59:15,515 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamoff [2022-11-22 01:59:15,515 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_sram_channel_setup [2022-11-22 01:59:15,516 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_sram_channel_setup [2022-11-22 01:59:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_free_buffer [2022-11-22 01:59:15,516 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_free_buffer [2022-11-22 01:59:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2022-11-22 01:59:15,516 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2022-11-22 01:59:15,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 01:59:15,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 01:59:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_input [2022-11-22 01:59:15,517 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_input [2022-11-22 01:59:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-22 01:59:15,517 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-22 01:59:15,517 INFO L130 BoogieDeclarations]: Found specification of procedure res_get [2022-11-22 01:59:15,517 INFO L138 BoogieDeclarations]: Found implementation of procedure res_get [2022-11-22 01:59:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_mmap_free [2022-11-22 01:59:15,518 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_mmap_free [2022-11-22 01:59:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_resume [2022-11-22 01:59:15,518 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_resume [2022-11-22 01:59:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cx8800_pci_driver_exit_15_2 [2022-11-22 01:59:15,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cx8800_pci_driver_exit_15_2 [2022-11-22 01:59:15,518 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_frequency [2022-11-22 01:59:15,519 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_frequency [2022-11-22 01:59:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-22 01:59:15,519 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-22 01:59:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2022-11-22 01:59:15,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2022-11-22 01:59:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure video_poll [2022-11-22 01:59:15,520 INFO L138 BoogieDeclarations]: Found implementation of procedure video_poll [2022-11-22 01:59:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:59:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-22 01:59:15,520 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-22 01:59:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:59:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_core_put [2022-11-22 01:59:15,520 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_core_put [2022-11-22 01:59:15,521 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_find [2022-11-22 01:59:15,521 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_find [2022-11-22 01:59:15,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_100 [2022-11-22 01:59:15,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_100 [2022-11-22 01:59:15,522 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_release [2022-11-22 01:59:15,526 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_release [2022-11-22 01:59:15,527 INFO L130 BoogieDeclarations]: Found specification of procedure start_video_dma [2022-11-22 01:59:15,527 INFO L138 BoogieDeclarations]: Found implementation of procedure start_video_dma [2022-11-22 01:59:15,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:59:15,527 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2022-11-22 01:59:15,527 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2022-11-22 01:59:15,527 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-22 01:59:15,527 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-22 01:59:15,528 INFO L130 BoogieDeclarations]: Found specification of procedure get_queue [2022-11-22 01:59:15,528 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queue [2022-11-22 01:59:15,530 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-22 01:59:15,530 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-22 01:59:15,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 01:59:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 01:59:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-22 01:59:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-22 01:59:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-22 01:59:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-22 01:59:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_dqbuf [2022-11-22 01:59:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_dqbuf [2022-11-22 01:59:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-22 01:59:15,532 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-22 01:59:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querycap [2022-11-22 01:59:15,532 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querycap [2022-11-22 01:59:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure video_register_device [2022-11-22 01:59:15,532 INFO L138 BoogieDeclarations]: Found implementation of procedure video_register_device [2022-11-22 01:59:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 01:59:15,532 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 01:59:15,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:59:15,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:59:15,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:59:15,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_101 [2022-11-22 01:59:15,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_101 [2022-11-22 01:59:15,533 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_input [2022-11-22 01:59:15,533 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_input [2022-11-22 01:59:15,534 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-22 01:59:15,534 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-22 01:59:15,534 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_tuner [2022-11-22 01:59:15,534 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_tuner [2022-11-22 01:59:15,534 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-22 01:59:15,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-22 01:59:15,534 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_start_vbi_dma [2022-11-22 01:59:15,535 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_start_vbi_dma [2022-11-22 01:59:15,535 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_ir_stop [2022-11-22 01:59:15,535 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_ir_stop [2022-11-22 01:59:15,535 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_register [2022-11-22 01:59:15,535 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_register [2022-11-22 01:59:15,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 01:59:15,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 01:59:15,535 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-22 01:59:15,536 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-22 01:59:15,536 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-22 01:59:15,536 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-22 01:59:15,536 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxw [2022-11-22 01:59:15,536 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxw [2022-11-22 01:59:15,536 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-22 01:59:15,536 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-22 01:59:15,537 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxh [2022-11-22 01:59:15,537 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxh [2022-11-22 01:59:15,537 INFO L130 BoogieDeclarations]: Found specification of procedure get_resource [2022-11-22 01:59:15,537 INFO L138 BoogieDeclarations]: Found implementation of procedure get_resource [2022-11-22 01:59:15,537 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-22 01:59:15,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-22 01:59:15,537 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-22 01:59:15,537 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-22 01:59:15,538 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_initdev [2022-11-22 01:59:15,538 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_initdev [2022-11-22 01:59:15,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:59:15,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_slock_of_cx8800_dev [2022-11-22 01:59:15,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_slock_of_cx8800_dev [2022-11-22 01:59:15,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 01:59:15,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 01:59:17,168 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:59:17,181 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:59:17,718 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 01:59:52,631 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 01:59:52,822 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:59:54,628 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:59:54,629 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-22 01:59:54,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:59:54 BoogieIcfgContainer [2022-11-22 01:59:54,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:59:54,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:59:54,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:59:54,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:59:54,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:59:07" (1/3) ... [2022-11-22 01:59:54,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4324fe14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:59:54, skipping insertion in model container [2022-11-22 01:59:54,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:59:14" (2/3) ... [2022-11-22 01:59:54,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4324fe14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:59:54, skipping insertion in model container [2022-11-22 01:59:54,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:59:54" (3/3) ... [2022-11-22 01:59:54,645 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2022-11-22 01:59:54,669 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:59:54,670 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:59:54,781 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:59:54,789 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;@6d0623d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:59:54,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:59:54,804 INFO L276 IsEmpty]: Start isEmpty. Operand has 2236 states, 1320 states have (on average 1.2992424242424243) internal successors, (1715), 1334 states have internal predecessors, (1715), 769 states have call successors, (769), 147 states have call predecessors, (769), 146 states have return successors, (762), 761 states have call predecessors, (762), 762 states have call successors, (762) [2022-11-22 01:59:54,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2022-11-22 01:59:54,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:54,864 INFO L195 NwaCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:54,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:59:54,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:54,871 INFO L85 PathProgramCache]: Analyzing trace with hash 255806400, now seen corresponding path program 1 times [2022-11-22 01:59:54,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:54,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15786701] [2022-11-22 01:59:54,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:54,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:59:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2022-11-22 01:59:57,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:59:57,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15786701] [2022-11-22 01:59:57,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15786701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:59:57,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:59:57,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:59:57,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012977308] [2022-11-22 01:59:57,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:59:57,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:59:57,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:57,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:59:57,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:59:57,413 INFO L87 Difference]: Start difference. First operand has 2236 states, 1320 states have (on average 1.2992424242424243) internal successors, (1715), 1334 states have internal predecessors, (1715), 769 states have call successors, (769), 147 states have call predecessors, (769), 146 states have return successors, (762), 761 states have call predecessors, (762), 762 states have call successors, (762) Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-11-22 02:00:02,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:00:04,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:00:05,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:05,904 INFO L93 Difference]: Finished difference Result 6316 states and 9194 transitions. [2022-11-22 02:00:05,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:05,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 523 [2022-11-22 02:00:05,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:05,957 INFO L225 Difference]: With dead ends: 6316 [2022-11-22 02:00:05,957 INFO L226 Difference]: Without dead ends: 4115 [2022-11-22 02:00:05,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:05,979 INFO L413 NwaCegarLoop]: 3411 mSDtfsCounter, 2771 mSDsluCounter, 2713 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2771 SdHoareTripleChecker+Valid, 6124 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:05,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2771 Valid, 6124 Invalid, 1009 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 990 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2022-11-22 02:00:06,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2022-11-22 02:00:06,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 4110. [2022-11-22 02:00:06,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4110 states, 2468 states have (on average 1.2917341977309562) internal successors, (3188), 2497 states have internal predecessors, (3188), 1353 states have call successors, (1353), 288 states have call predecessors, (1353), 288 states have return successors, (1353), 1348 states have call predecessors, (1353), 1353 states have call successors, (1353) [2022-11-22 02:00:06,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4110 states to 4110 states and 5894 transitions. [2022-11-22 02:00:06,388 INFO L78 Accepts]: Start accepts. Automaton has 4110 states and 5894 transitions. Word has length 523 [2022-11-22 02:00:06,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:06,394 INFO L495 AbstractCegarLoop]: Abstraction has 4110 states and 5894 transitions. [2022-11-22 02:00:06,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2022-11-22 02:00:06,395 INFO L276 IsEmpty]: Start isEmpty. Operand 4110 states and 5894 transitions. [2022-11-22 02:00:06,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2022-11-22 02:00:06,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:06,424 INFO L195 NwaCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:06,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:00:06,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:06,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:06,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1256427370, now seen corresponding path program 1 times [2022-11-22 02:00:06,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:06,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605813748] [2022-11-22 02:00:06,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:06,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2022-11-22 02:00:07,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:07,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605813748] [2022-11-22 02:00:07,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605813748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:07,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:07,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:07,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468666421] [2022-11-22 02:00:07,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:07,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:07,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:07,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:07,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:07,683 INFO L87 Difference]: Start difference. First operand 4110 states and 5894 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-22 02:00:10,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:00:15,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:15,022 INFO L93 Difference]: Finished difference Result 11822 states and 16940 transitions. [2022-11-22 02:00:15,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:15,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 528 [2022-11-22 02:00:15,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:15,098 INFO L225 Difference]: With dead ends: 11822 [2022-11-22 02:00:15,098 INFO L226 Difference]: Without dead ends: 7811 [2022-11-22 02:00:15,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:15,121 INFO L413 NwaCegarLoop]: 3434 mSDtfsCounter, 2760 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2766 SdHoareTripleChecker+Valid, 6111 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:15,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2766 Valid, 6111 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 981 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-22 02:00:15,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7811 states. [2022-11-22 02:00:15,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7811 to 7805. [2022-11-22 02:00:15,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7805 states, 4721 states have (on average 1.2948527854268164) internal successors, (6113), 4777 states have internal predecessors, (6113), 2523 states have call successors, (2523), 560 states have call predecessors, (2523), 560 states have return successors, (2523), 2511 states have call predecessors, (2523), 2523 states have call successors, (2523) [2022-11-22 02:00:15,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7805 states to 7805 states and 11159 transitions. [2022-11-22 02:00:15,639 INFO L78 Accepts]: Start accepts. Automaton has 7805 states and 11159 transitions. Word has length 528 [2022-11-22 02:00:15,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:15,641 INFO L495 AbstractCegarLoop]: Abstraction has 7805 states and 11159 transitions. [2022-11-22 02:00:15,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2022-11-22 02:00:15,642 INFO L276 IsEmpty]: Start isEmpty. Operand 7805 states and 11159 transitions. [2022-11-22 02:00:15,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-11-22 02:00:15,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:15,662 INFO L195 NwaCegarLoop]: trace histogram [51, 49, 49, 49, 49, 49, 49, 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] [2022-11-22 02:00:15,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:00:15,662 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:15,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:15,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1362267234, now seen corresponding path program 1 times [2022-11-22 02:00:15,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:15,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544535229] [2022-11-22 02:00:15,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:15,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:16,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9609 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9606 trivial. 0 not checked. [2022-11-22 02:00:16,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:16,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544535229] [2022-11-22 02:00:16,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544535229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:16,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:16,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:16,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429602935] [2022-11-22 02:00:16,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:16,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:16,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:16,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:16,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:16,770 INFO L87 Difference]: Start difference. First operand 7805 states and 11159 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-22 02:00:21,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:00:22,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:22,756 INFO L93 Difference]: Finished difference Result 19170 states and 27360 transitions. [2022-11-22 02:00:22,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:22,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 542 [2022-11-22 02:00:22,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:22,849 INFO L225 Difference]: With dead ends: 19170 [2022-11-22 02:00:22,849 INFO L226 Difference]: Without dead ends: 11464 [2022-11-22 02:00:22,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:22,894 INFO L413 NwaCegarLoop]: 3440 mSDtfsCounter, 2743 mSDsluCounter, 2673 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2743 SdHoareTripleChecker+Valid, 6113 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:22,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2743 Valid, 6113 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-22 02:00:22,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11464 states. [2022-11-22 02:00:23,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11464 to 11462. [2022-11-22 02:00:23,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11462 states, 6956 states have (on average 1.294134560092007) internal successors, (9002), 7035 states have internal predecessors, (9002), 3665 states have call successors, (3665), 840 states have call predecessors, (3665), 840 states have return successors, (3665), 3650 states have call predecessors, (3665), 3665 states have call successors, (3665) [2022-11-22 02:00:23,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11462 states to 11462 states and 16332 transitions. [2022-11-22 02:00:23,648 INFO L78 Accepts]: Start accepts. Automaton has 11462 states and 16332 transitions. Word has length 542 [2022-11-22 02:00:23,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:23,651 INFO L495 AbstractCegarLoop]: Abstraction has 11462 states and 16332 transitions. [2022-11-22 02:00:23,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-22 02:00:23,651 INFO L276 IsEmpty]: Start isEmpty. Operand 11462 states and 16332 transitions. [2022-11-22 02:00:23,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2022-11-22 02:00:23,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:23,669 INFO L195 NwaCegarLoop]: trace histogram [52, 51, 51, 51, 51, 51, 51, 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] [2022-11-22 02:00:23,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:00:23,670 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:23,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:23,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1818760955, now seen corresponding path program 1 times [2022-11-22 02:00:23,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:23,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115026646] [2022-11-22 02:00:23,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:23,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:24,948 INFO L134 CoverageAnalysis]: Checked inductivity of 10306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10306 trivial. 0 not checked. [2022-11-22 02:00:24,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:24,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115026646] [2022-11-22 02:00:24,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115026646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:24,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:24,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:24,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571430114] [2022-11-22 02:00:24,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:24,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:24,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:24,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:24,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:24,953 INFO L87 Difference]: Start difference. First operand 11462 states and 16332 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-22 02:00:28,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:00:33,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:33,642 INFO L93 Difference]: Finished difference Result 27344 states and 38888 transitions. [2022-11-22 02:00:33,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:33,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 557 [2022-11-22 02:00:33,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:33,781 INFO L225 Difference]: With dead ends: 27344 [2022-11-22 02:00:33,782 INFO L226 Difference]: Without dead ends: 15981 [2022-11-22 02:00:33,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:33,855 INFO L413 NwaCegarLoop]: 3369 mSDtfsCounter, 2715 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2715 SdHoareTripleChecker+Valid, 6024 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:33,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2715 Valid, 6024 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-22 02:00:33,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15981 states. [2022-11-22 02:00:35,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15981 to 15975. [2022-11-22 02:00:35,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15975 states, 9704 states have (on average 1.2861706512778235) internal successors, (12481), 9831 states have internal predecessors, (12481), 5079 states have call successors, (5079), 1191 states have call predecessors, (5079), 1191 states have return successors, (5079), 5050 states have call predecessors, (5079), 5079 states have call successors, (5079) [2022-11-22 02:00:35,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15975 states to 15975 states and 22639 transitions. [2022-11-22 02:00:35,139 INFO L78 Accepts]: Start accepts. Automaton has 15975 states and 22639 transitions. Word has length 557 [2022-11-22 02:00:35,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:35,140 INFO L495 AbstractCegarLoop]: Abstraction has 15975 states and 22639 transitions. [2022-11-22 02:00:35,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-22 02:00:35,140 INFO L276 IsEmpty]: Start isEmpty. Operand 15975 states and 22639 transitions. [2022-11-22 02:00:35,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2022-11-22 02:00:35,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:35,162 INFO L195 NwaCegarLoop]: trace histogram [51, 49, 49, 49, 49, 49, 49, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:00:35,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:00:35,163 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:35,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:35,164 INFO L85 PathProgramCache]: Analyzing trace with hash -893764309, now seen corresponding path program 1 times [2022-11-22 02:00:35,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:35,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602890843] [2022-11-22 02:00:35,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:35,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:35,431 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:00:35,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1807476023] [2022-11-22 02:00:35,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:35,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:00:35,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:00:35,437 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:00:35,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:00:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:38,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 9478 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:00:38,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:00:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 9643 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 9447 trivial. 0 not checked. [2022-11-22 02:00:38,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:00:38,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:38,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602890843] [2022-11-22 02:00:38,446 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:00:38,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807476023] [2022-11-22 02:00:38,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807476023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:38,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:38,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:38,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289128648] [2022-11-22 02:00:38,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:38,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:38,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:38,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:38,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:38,450 INFO L87 Difference]: Start difference. First operand 15975 states and 22639 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2022-11-22 02:00:40,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:00:43,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:00:47,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:47,258 INFO L93 Difference]: Finished difference Result 45709 states and 64640 transitions. [2022-11-22 02:00:47,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:47,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 583 [2022-11-22 02:00:47,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:47,464 INFO L225 Difference]: With dead ends: 45709 [2022-11-22 02:00:47,464 INFO L226 Difference]: Without dead ends: 29833 [2022-11-22 02:00:47,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:47,555 INFO L413 NwaCegarLoop]: 3688 mSDtfsCounter, 2785 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2785 SdHoareTripleChecker+Valid, 6259 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:47,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2785 Valid, 6259 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1117 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-11-22 02:00:47,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29833 states. [2022-11-22 02:00:49,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29833 to 29777. [2022-11-22 02:00:49,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29777 states, 18114 states have (on average 1.2853593905266645) internal successors, (23283), 18364 states have internal predecessors, (23283), 9383 states have call successors, (9383), 2279 states have call predecessors, (9383), 2279 states have return successors, (9383), 9323 states have call predecessors, (9383), 9383 states have call successors, (9383) [2022-11-22 02:00:49,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29777 states to 29777 states and 42049 transitions. [2022-11-22 02:00:49,576 INFO L78 Accepts]: Start accepts. Automaton has 29777 states and 42049 transitions. Word has length 583 [2022-11-22 02:00:49,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:00:49,578 INFO L495 AbstractCegarLoop]: Abstraction has 29777 states and 42049 transitions. [2022-11-22 02:00:49,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2022-11-22 02:00:49,578 INFO L276 IsEmpty]: Start isEmpty. Operand 29777 states and 42049 transitions. [2022-11-22 02:00:49,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2022-11-22 02:00:49,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:00:49,595 INFO L195 NwaCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 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] [2022-11-22 02:00:49,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:00:49,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:00:49,817 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:00:49,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:00:49,817 INFO L85 PathProgramCache]: Analyzing trace with hash -311547202, now seen corresponding path program 1 times [2022-11-22 02:00:49,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:00:49,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740603881] [2022-11-22 02:00:49,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:00:49,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:00:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:00:50,905 INFO L134 CoverageAnalysis]: Checked inductivity of 9845 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9842 trivial. 0 not checked. [2022-11-22 02:00:50,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:00:50,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740603881] [2022-11-22 02:00:50,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740603881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:00:50,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:00:50,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:00:50,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490545455] [2022-11-22 02:00:50,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:00:50,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:00:50,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:00:50,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:00:50,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:50,909 INFO L87 Difference]: Start difference. First operand 29777 states and 42049 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-22 02:00:57,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:00:57,350 INFO L93 Difference]: Finished difference Result 66863 states and 94566 transitions. [2022-11-22 02:00:57,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:00:57,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 579 [2022-11-22 02:00:57,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:00:57,615 INFO L225 Difference]: With dead ends: 66863 [2022-11-22 02:00:57,615 INFO L226 Difference]: Without dead ends: 41302 [2022-11-22 02:00:57,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:00:57,939 INFO L413 NwaCegarLoop]: 4020 mSDtfsCounter, 2768 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2768 SdHoareTripleChecker+Valid, 6689 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:00:57,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2768 Valid, 6689 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-22 02:00:57,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41302 states. [2022-11-22 02:01:00,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41302 to 41292. [2022-11-22 02:01:00,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41292 states, 25159 states have (on average 1.2868158511864543) internal successors, (32375), 25507 states have internal predecessors, (32375), 12954 states have call successors, (12954), 3178 states have call predecessors, (12954), 3178 states have return successors, (12954), 12863 states have call predecessors, (12954), 12954 states have call successors, (12954) [2022-11-22 02:01:00,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41292 states to 41292 states and 58283 transitions. [2022-11-22 02:01:00,782 INFO L78 Accepts]: Start accepts. Automaton has 41292 states and 58283 transitions. Word has length 579 [2022-11-22 02:01:00,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:01:00,783 INFO L495 AbstractCegarLoop]: Abstraction has 41292 states and 58283 transitions. [2022-11-22 02:01:00,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-22 02:01:00,784 INFO L276 IsEmpty]: Start isEmpty. Operand 41292 states and 58283 transitions. [2022-11-22 02:01:00,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2022-11-22 02:01:00,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:01:00,804 INFO L195 NwaCegarLoop]: trace histogram [54, 49, 49, 49, 49, 49, 49, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:01:00,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:01:00,805 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:01:00,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:01:00,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1484527203, now seen corresponding path program 1 times [2022-11-22 02:01:00,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:01:00,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911689836] [2022-11-22 02:01:00,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:00,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:01:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 9941 trivial. 0 not checked. [2022-11-22 02:01:02,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:01:02,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911689836] [2022-11-22 02:01:02,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911689836] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:01:02,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101082991] [2022-11-22 02:01:02,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:02,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:01:02,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:01:02,557 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:01:02,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:01:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:05,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 9439 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:01:05,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:01:05,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 9841 trivial. 0 not checked. [2022-11-22 02:01:05,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:01:05,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101082991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:01:05,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:01:05,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-22 02:01:05,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693846319] [2022-11-22 02:01:05,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:01:05,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:01:05,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:01:05,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:01:05,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:01:05,612 INFO L87 Difference]: Start difference. First operand 41292 states and 58283 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2022-11-22 02:01:08,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:01:13,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:01:16,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:01:16,759 INFO L93 Difference]: Finished difference Result 86716 states and 122527 transitions. [2022-11-22 02:01:16,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:01:16,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 588 [2022-11-22 02:01:16,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:01:17,050 INFO L225 Difference]: With dead ends: 86716 [2022-11-22 02:01:17,051 INFO L226 Difference]: Without dead ends: 49640 [2022-11-22 02:01:17,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:01:17,224 INFO L413 NwaCegarLoop]: 3532 mSDtfsCounter, 2863 mSDsluCounter, 2527 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 43 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2863 SdHoareTripleChecker+Valid, 6059 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:01:17,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2863 Valid, 6059 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1029 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2022-11-22 02:01:17,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49640 states. [2022-11-22 02:01:19,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49640 to 49562. [2022-11-22 02:01:19,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49562 states, 30245 states have (on average 1.2895354604066789) internal successors, (39002), 30667 states have internal predecessors, (39002), 15506 states have call successors, (15506), 3810 states have call predecessors, (15506), 3810 states have return successors, (15506), 15395 states have call predecessors, (15506), 15506 states have call successors, (15506) [2022-11-22 02:01:20,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49562 states to 49562 states and 70014 transitions. [2022-11-22 02:01:20,111 INFO L78 Accepts]: Start accepts. Automaton has 49562 states and 70014 transitions. Word has length 588 [2022-11-22 02:01:20,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:01:20,113 INFO L495 AbstractCegarLoop]: Abstraction has 49562 states and 70014 transitions. [2022-11-22 02:01:20,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2022-11-22 02:01:20,113 INFO L276 IsEmpty]: Start isEmpty. Operand 49562 states and 70014 transitions. [2022-11-22 02:01:20,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2022-11-22 02:01:20,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:01:20,152 INFO L195 NwaCegarLoop]: trace histogram [51, 49, 49, 49, 49, 49, 49, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:01:20,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:01:20,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-22 02:01:20,376 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:01:20,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:01:20,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1091084179, now seen corresponding path program 1 times [2022-11-22 02:01:20,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:01:20,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046084859] [2022-11-22 02:01:20,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:20,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:01:20,664 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:01:20,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [302464440] [2022-11-22 02:01:20,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:20,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:01:20,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:01:20,666 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:01:20,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:01:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:23,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 9654 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:01:23,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:01:23,754 INFO L134 CoverageAnalysis]: Checked inductivity of 9643 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 9437 trivial. 0 not checked. [2022-11-22 02:01:23,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:01:23,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:01:23,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046084859] [2022-11-22 02:01:23,755 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:01:23,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302464440] [2022-11-22 02:01:23,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302464440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:01:23,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:01:23,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:01:23,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649785834] [2022-11-22 02:01:23,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:01:23,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:01:23,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:01:23,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:01:23,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:01:23,759 INFO L87 Difference]: Start difference. First operand 49562 states and 70014 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (65), 3 states have call predecessors, (65), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-22 02:01:27,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:01:34,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:01:34,458 INFO L93 Difference]: Finished difference Result 146354 states and 206482 transitions. [2022-11-22 02:01:34,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:01:34,459 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), 3 states have call successors, (65), 3 states have call predecessors, (65), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 610 [2022-11-22 02:01:34,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:01:34,942 INFO L225 Difference]: With dead ends: 146354 [2022-11-22 02:01:34,943 INFO L226 Difference]: Without dead ends: 96891 [2022-11-22 02:01:35,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:01:35,124 INFO L413 NwaCegarLoop]: 3390 mSDtfsCounter, 3092 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3092 SdHoareTripleChecker+Valid, 5883 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:01:35,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3092 Valid, 5883 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-22 02:01:35,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96891 states. [2022-11-22 02:01:39,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96891 to 96829. [2022-11-22 02:01:39,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96829 states, 59123 states have (on average 1.2885848147083199) internal successors, (76185), 60013 states have internal predecessors, (76185), 30134 states have call successors, (30134), 7571 states have call predecessors, (30134), 7571 states have return successors, (30134), 29866 states have call predecessors, (30134), 30134 states have call successors, (30134) [2022-11-22 02:01:39,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96829 states to 96829 states and 136453 transitions. [2022-11-22 02:01:40,002 INFO L78 Accepts]: Start accepts. Automaton has 96829 states and 136453 transitions. Word has length 610 [2022-11-22 02:01:40,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:01:40,003 INFO L495 AbstractCegarLoop]: Abstraction has 96829 states and 136453 transitions. [2022-11-22 02:01:40,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (65), 3 states have call predecessors, (65), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-22 02:01:40,004 INFO L276 IsEmpty]: Start isEmpty. Operand 96829 states and 136453 transitions. [2022-11-22 02:01:40,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2022-11-22 02:01:40,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:01:40,056 INFO L195 NwaCegarLoop]: trace histogram [56, 51, 51, 51, 51, 51, 51, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:01:40,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:01:40,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5db87b-bac7-48a4-8e2c-5d22f076675a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:01:40,271 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:01:40,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:01:40,272 INFO L85 PathProgramCache]: Analyzing trace with hash -778907742, now seen corresponding path program 1 times [2022-11-22 02:01:40,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:01:40,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049157923] [2022-11-22 02:01:40,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:01:40,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:01:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:01:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 10770 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10763 trivial. 0 not checked. [2022-11-22 02:01:41,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:01:41,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049157923] [2022-11-22 02:01:41,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049157923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:01:41,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:01:41,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:01:41,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126539459] [2022-11-22 02:01:41,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:01:41,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:01:41,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:01:41,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:01:41,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:01:41,868 INFO L87 Difference]: Start difference. First operand 96829 states and 136453 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-22 02:01:46,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:01:54,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:01:54,865 INFO L93 Difference]: Finished difference Result 215210 states and 303162 transitions. [2022-11-22 02:01:54,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:01:54,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 622 [2022-11-22 02:01:54,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:01:55,709 INFO L225 Difference]: With dead ends: 215210 [2022-11-22 02:01:55,709 INFO L226 Difference]: Without dead ends: 126460 [2022-11-22 02:01:55,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:01:55,932 INFO L413 NwaCegarLoop]: 4166 mSDtfsCounter, 2750 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2750 SdHoareTripleChecker+Valid, 6777 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:01:55,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2750 Valid, 6777 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1163 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-11-22 02:01:56,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126460 states.