./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 aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/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_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 24e26672720ca570553d18d605e2ce47cd111ea61f1f4153430b6ee115172355 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:33:02,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:33:02,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:33:02,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:33:02,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:33:02,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:33:02,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:33:02,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:33:02,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:33:02,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:33:02,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:33:02,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:33:02,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:33:02,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:33:02,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:33:02,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:33:02,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:33:02,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:33:02,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:33:02,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:33:02,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:33:02,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:33:02,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:33:02,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:33:02,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:33:02,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:33:02,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:33:02,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:33:02,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:33:02,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:33:02,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:33:02,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:33:02,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:33:02,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:33:02,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:33:02,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:33:02,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:33:02,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:33:02,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:33:02,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:33:02,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:33:02,492 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:33:02,536 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:33:02,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:33:02,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:33:02,537 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:33:02,539 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:33:02,539 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:33:02,539 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:33:02,540 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:33:02,540 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:33:02,540 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:33:02,541 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:33:02,541 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:33:02,542 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:33:02,542 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:33:02,542 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:33:02,542 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:33:02,543 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:33:02,543 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:33:02,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:33:02,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:33:02,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:33:02,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:33:02,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:33:02,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:33:02,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:33:02,546 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:33:02,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:33:02,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:33:02,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:33:02,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:33:02,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:33:02,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:33:02,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:33:02,549 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:33:02,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:33:02,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:33:02,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:33:02,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:33:02,550 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24e26672720ca570553d18d605e2ce47cd111ea61f1f4153430b6ee115172355 [2021-11-23 02:33:02,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:33:02,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:33:02,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:33:02,851 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:33:02,852 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:33:02,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2021-11-23 02:33:02,919 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/data/1f233d461/194c956707404504876f8b74edc7a8b0/FLAG16904f933 [2021-11-23 02:33:04,123 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:33:04,124 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2021-11-23 02:33:04,208 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/data/1f233d461/194c956707404504876f8b74edc7a8b0/FLAG16904f933 [2021-11-23 02:33:04,292 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/data/1f233d461/194c956707404504876f8b74edc7a8b0 [2021-11-23 02:33:04,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:33:04,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:33:04,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:33:04,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:33:04,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:33:04,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:33:04" (1/1) ... [2021-11-23 02:33:04,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7cf8c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:04, skipping insertion in model container [2021-11-23 02:33:04,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:33:04" (1/1) ... [2021-11-23 02:33:04,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:33:04,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:33:10,185 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588527,588540] [2021-11-23 02:33:10,188 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588672,588685] [2021-11-23 02:33:10,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:33:10,350 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:33:11,242 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588527,588540] [2021-11-23 02:33:11,243 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588672,588685] [2021-11-23 02:33:11,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:33:11,459 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:33:11,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:11 WrapperNode [2021-11-23 02:33:11,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:33:11,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:33:11,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:33:11,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:33:11,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:11" (1/1) ... [2021-11-23 02:33:11,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:11" (1/1) ... [2021-11-23 02:33:11,907 INFO L137 Inliner]: procedures = 538, calls = 4280, calls flagged for inlining = 263, calls inlined = 250, statements flattened = 8540 [2021-11-23 02:33:11,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:33:11,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:33:11,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:33:11,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:33:11,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:11" (1/1) ... [2021-11-23 02:33:11,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:11" (1/1) ... [2021-11-23 02:33:11,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:11" (1/1) ... [2021-11-23 02:33:11,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:11" (1/1) ... [2021-11-23 02:33:12,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:11" (1/1) ... [2021-11-23 02:33:12,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:11" (1/1) ... [2021-11-23 02:33:12,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:11" (1/1) ... [2021-11-23 02:33:12,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:33:12,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:33:12,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:33:12,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:33:12,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:11" (1/1) ... [2021-11-23 02:33:12,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:33:12,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:33:12,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:33:12,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:33:12,530 INFO L130 BoogieDeclarations]: Found specification of procedure video_open [2021-11-23 02:33:12,531 INFO L138 BoogieDeclarations]: Found implementation of procedure video_open [2021-11-23 02:33:12,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:33:12,531 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:33:12,531 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamon [2021-11-23 02:33:12,531 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamon [2021-11-23 02:33:12,531 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_unregister_video [2021-11-23 02:33:12,531 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_unregister_video [2021-11-23 02:33:12,531 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_fmt_vid_cap [2021-11-23 02:33:12,532 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_fmt_vid_cap [2021-11-23 02:33:12,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:33:12,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:33:12,532 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_input [2021-11-23 02:33:12,532 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_input [2021-11-23 02:33:12,532 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_reqbufs [2021-11-23 02:33:12,533 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_reqbufs [2021-11-23 02:33:12,533 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_fmt_vid_cap [2021-11-23 02:33:12,533 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_fmt_vid_cap [2021-11-23 02:33:12,533 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 02:33:12,533 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 02:33:12,533 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_tvnorm [2021-11-23 02:33:12,533 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_tvnorm [2021-11-23 02:33:12,534 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_tvaudio [2021-11-23 02:33:12,534 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_tvaudio [2021-11-23 02:33:12,534 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_s_vid_ctrl [2021-11-23 02:33:12,534 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_s_vid_ctrl [2021-11-23 02:33:12,534 INFO L130 BoogieDeclarations]: Found specification of procedure res_free [2021-11-23 02:33:12,534 INFO L138 BoogieDeclarations]: Found implementation of procedure res_free [2021-11-23 02:33:12,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_slock_of_cx8800_dev [2021-11-23 02:33:12,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_slock_of_cx8800_dev [2021-11-23 02:33:12,535 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-23 02:33:12,535 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-23 02:33:12,535 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_to_dma [2021-11-23 02:33:12,535 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_to_dma [2021-11-23 02:33:12,535 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_shutdown [2021-11-23 02:33:12,535 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_shutdown [2021-11-23 02:33:12,535 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-23 02:33:12,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-23 02:33:12,536 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fmt_vid_cap [2021-11-23 02:33:12,536 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fmt_vid_cap [2021-11-23 02:33:12,536 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_newstation [2021-11-23 02:33:12,536 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_newstation [2021-11-23 02:33:12,536 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_std [2021-11-23 02:33:12,536 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_std [2021-11-23 02:33:12,537 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_vdev_init [2021-11-23 02:33:12,537 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_vdev_init [2021-11-23 02:33:12,537 INFO L130 BoogieDeclarations]: Found specification of procedure video_mmap [2021-11-23 02:33:12,538 INFO L138 BoogieDeclarations]: Found implementation of procedure video_mmap [2021-11-23 02:33:12,539 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-23 02:33:12,539 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-23 02:33:12,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 02:33:12,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 02:33:12,540 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 02:33:12,540 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 02:33:12,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer [2021-11-23 02:33:12,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer [2021-11-23 02:33:12,540 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-11-23 02:33:12,541 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-11-23 02:33:12,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:33:12,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:33:12,542 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_poll [2021-11-23 02:33:12,542 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_poll [2021-11-23 02:33:12,542 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_frequency [2021-11-23 02:33:12,542 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_frequency [2021-11-23 02:33:12,542 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querybuf [2021-11-23 02:33:12,542 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querybuf [2021-11-23 02:33:12,542 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_register [2021-11-23 02:33:12,543 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_register [2021-11-23 02:33:12,543 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2021-11-23 02:33:12,543 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2021-11-23 02:33:12,543 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_setup [2021-11-23 02:33:12,544 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_setup [2021-11-23 02:33:12,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:33:12,544 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_stereo [2021-11-23 02:33:12,544 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_stereo [2021-11-23 02:33:12,544 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_vbi_fmt [2021-11-23 02:33:12,544 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_vbi_fmt [2021-11-23 02:33:12,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_102 [2021-11-23 02:33:12,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_102 [2021-11-23 02:33:12,545 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-23 02:33:12,545 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-23 02:33:12,545 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_audio_thread [2021-11-23 02:33:12,545 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_cap [2021-11-23 02:33:12,546 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_cap [2021-11-23 02:33:12,546 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2021-11-23 02:33:12,546 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2021-11-23 02:33:12,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:33:12,547 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2021-11-23 02:33:12,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2021-11-23 02:33:12,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 02:33:12,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 02:33:12,548 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_restart_vbi_queue [2021-11-23 02:33:12,548 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_restart_vbi_queue [2021-11-23 02:33:12,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:33:12,549 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_finidev [2021-11-23 02:33:12,549 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_finidev [2021-11-23 02:33:12,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-23 02:33:12,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-23 02:33:12,549 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2021-11-23 02:33:12,549 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2021-11-23 02:33:12,549 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_querycap [2021-11-23 02:33:12,550 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_querycap [2021-11-23 02:33:12,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 02:33:12,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 02:33:12,550 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_freq [2021-11-23 02:33:12,550 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_freq [2021-11-23 02:33:12,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 02:33:12,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 02:33:12,551 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_s_aud_ctrl [2021-11-23 02:33:12,552 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_s_aud_ctrl [2021-11-23 02:33:12,709 INFO L130 BoogieDeclarations]: Found specification of procedure video_read [2021-11-23 02:33:12,709 INFO L138 BoogieDeclarations]: Found implementation of procedure video_read [2021-11-23 02:33:12,709 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-23 02:33:12,709 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-23 02:33:12,709 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_video_mux [2021-11-23 02:33:12,709 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_video_mux [2021-11-23 02:33:12,709 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 02:33:12,710 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 02:33:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure video_is_registered [2021-11-23 02:33:12,710 INFO L138 BoogieDeclarations]: Found implementation of procedure video_is_registered [2021-11-23 02:33:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2021-11-23 02:33:12,710 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_subscribe_event [2021-11-23 02:33:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure video_unregister_device [2021-11-23 02:33:12,710 INFO L138 BoogieDeclarations]: Found implementation of procedure video_unregister_device [2021-11-23 02:33:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:33:12,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-23 02:33:12,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-23 02:33:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 02:33:12,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 02:33:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-23 02:33:12,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-23 02:33:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-23 02:33:12,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-23 02:33:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_queue_sg_init [2021-11-23 02:33:12,711 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_queue_sg_init [2021-11-23 02:33:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:33:12,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:33:12,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:33:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:33:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure video_release [2021-11-23 02:33:12,712 INFO L138 BoogieDeclarations]: Found implementation of procedure video_release [2021-11-23 02:33:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:33:12,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:33:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:33:12,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:33:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure restart_video_queue [2021-11-23 02:33:12,712 INFO L138 BoogieDeclarations]: Found implementation of procedure restart_video_queue [2021-11-23 02:33:12,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-23 02:33:12,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-23 02:33:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-23 02:33:12,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-23 02:33:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_qbuf [2021-11-23 02:33:12,713 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_qbuf [2021-11-23 02:33:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_wakeup [2021-11-23 02:33:12,713 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_wakeup [2021-11-23 02:33:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-23 02:33:12,713 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-23 02:33:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_s_ctrl [2021-11-23 02:33:12,713 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_s_ctrl [2021-11-23 02:33:12,713 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-23 02:33:12,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-23 02:33:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_iolock [2021-11-23 02:33:12,714 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_iolock [2021-11-23 02:33:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_enum_input [2021-11-23 02:33:12,714 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_enum_input [2021-11-23 02:33:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_sram_channel_dump [2021-11-23 02:33:12,714 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_sram_channel_dump [2021-11-23 02:33:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure video_set_drvdata [2021-11-23 02:33:12,714 INFO L138 BoogieDeclarations]: Found implementation of procedure video_set_drvdata [2021-11-23 02:33:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_tuner [2021-11-23 02:33:12,714 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_tuner [2021-11-23 02:33:12,714 INFO L130 BoogieDeclarations]: Found specification of procedure res_check [2021-11-23 02:33:12,714 INFO L138 BoogieDeclarations]: Found implementation of procedure res_check [2021-11-23 02:33:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure format_by_fourcc [2021-11-23 02:33:12,715 INFO L138 BoogieDeclarations]: Found implementation of procedure format_by_fourcc [2021-11-23 02:33:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_risc_buffer [2021-11-23 02:33:12,715 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_risc_buffer [2021-11-23 02:33:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-23 02:33:12,715 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-23 02:33:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-23 02:33:12,715 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-23 02:33:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2021-11-23 02:33:12,715 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_unsubscribe [2021-11-23 02:33:12,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:33:12,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:33:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_risc_stopper [2021-11-23 02:33:12,716 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_risc_stopper [2021-11-23 02:33:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 02:33:12,716 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 02:33:12,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-23 02:33:12,741 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-23 02:33:12,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:33:12,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:33:12,741 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_std [2021-11-23 02:33:12,743 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_std [2021-11-23 02:33:12,743 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamoff [2021-11-23 02:33:12,743 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamoff [2021-11-23 02:33:12,743 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_sram_channel_setup [2021-11-23 02:33:12,743 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_sram_channel_setup [2021-11-23 02:33:12,744 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_free_buffer [2021-11-23 02:33:12,744 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_free_buffer [2021-11-23 02:33:12,744 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2021-11-23 02:33:12,744 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2021-11-23 02:33:12,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-23 02:33:12,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-23 02:33:12,752 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_input [2021-11-23 02:33:12,752 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_input [2021-11-23 02:33:12,752 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:33:12,752 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:33:12,753 INFO L130 BoogieDeclarations]: Found specification of procedure res_get [2021-11-23 02:33:12,753 INFO L138 BoogieDeclarations]: Found implementation of procedure res_get [2021-11-23 02:33:12,753 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_mmap_free [2021-11-23 02:33:12,753 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_mmap_free [2021-11-23 02:33:12,753 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_resume [2021-11-23 02:33:12,753 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_resume [2021-11-23 02:33:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cx8800_pci_driver_exit_15_2 [2021-11-23 02:33:12,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cx8800_pci_driver_exit_15_2 [2021-11-23 02:33:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_frequency [2021-11-23 02:33:12,754 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_frequency [2021-11-23 02:33:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-11-23 02:33:12,754 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-11-23 02:33:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-23 02:33:12,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-23 02:33:12,755 INFO L130 BoogieDeclarations]: Found specification of procedure video_poll [2021-11-23 02:33:12,755 INFO L138 BoogieDeclarations]: Found implementation of procedure video_poll [2021-11-23 02:33:12,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:33:12,755 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:33:12,755 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:33:12,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:33:12,756 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_core_put [2021-11-23 02:33:12,756 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_core_put [2021-11-23 02:33:12,756 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_find [2021-11-23 02:33:12,756 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_find [2021-11-23 02:33:12,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_100 [2021-11-23 02:33:12,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_100 [2021-11-23 02:33:12,756 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_release [2021-11-23 02:33:12,757 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_release [2021-11-23 02:33:12,757 INFO L130 BoogieDeclarations]: Found specification of procedure start_video_dma [2021-11-23 02:33:12,757 INFO L138 BoogieDeclarations]: Found implementation of procedure start_video_dma [2021-11-23 02:33:12,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:33:12,757 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2021-11-23 02:33:12,757 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2021-11-23 02:33:12,758 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 02:33:12,758 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 02:33:12,758 INFO L130 BoogieDeclarations]: Found specification of procedure get_queue [2021-11-23 02:33:12,758 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queue [2021-11-23 02:33:12,758 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-23 02:33:12,758 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-23 02:33:12,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 02:33:12,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 02:33:12,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-23 02:33:12,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-23 02:33:12,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 02:33:12,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 02:33:12,759 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_dqbuf [2021-11-23 02:33:12,760 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_dqbuf [2021-11-23 02:33:12,760 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 02:33:12,760 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 02:33:12,760 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querycap [2021-11-23 02:33:12,760 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querycap [2021-11-23 02:33:12,760 INFO L130 BoogieDeclarations]: Found specification of procedure video_register_device [2021-11-23 02:33:12,760 INFO L138 BoogieDeclarations]: Found implementation of procedure video_register_device [2021-11-23 02:33:12,761 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:33:12,761 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:33:12,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:33:12,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:33:12,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:33:12,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_101 [2021-11-23 02:33:12,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_101 [2021-11-23 02:33:12,762 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_input [2021-11-23 02:33:12,762 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_input [2021-11-23 02:33:12,762 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-23 02:33:12,762 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-23 02:33:12,762 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_tuner [2021-11-23 02:33:12,762 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_tuner [2021-11-23 02:33:12,763 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-23 02:33:12,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-23 02:33:12,763 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_start_vbi_dma [2021-11-23 02:33:12,763 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_start_vbi_dma [2021-11-23 02:33:12,763 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_ir_stop [2021-11-23 02:33:12,763 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_ir_stop [2021-11-23 02:33:12,763 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_register [2021-11-23 02:33:12,764 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_register [2021-11-23 02:33:12,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 02:33:12,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 02:33:12,764 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-23 02:33:12,764 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-23 02:33:12,764 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-23 02:33:12,764 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-23 02:33:12,765 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxw [2021-11-23 02:33:12,765 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxw [2021-11-23 02:33:12,765 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-23 02:33:12,765 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-23 02:33:12,765 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxh [2021-11-23 02:33:12,765 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxh [2021-11-23 02:33:12,765 INFO L130 BoogieDeclarations]: Found specification of procedure get_resource [2021-11-23 02:33:12,766 INFO L138 BoogieDeclarations]: Found implementation of procedure get_resource [2021-11-23 02:33:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 02:33:12,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 02:33:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-23 02:33:12,766 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-23 02:33:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_initdev [2021-11-23 02:33:12,766 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_initdev [2021-11-23 02:33:12,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:33:12,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_slock_of_cx8800_dev [2021-11-23 02:33:12,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_slock_of_cx8800_dev [2021-11-23 02:33:12,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 02:33:12,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 02:33:14,160 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:33:14,172 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:33:14,541 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:33:42,908 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 02:33:43,020 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:33:45,006 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:33:45,006 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-23 02:33:45,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:33:45 BoogieIcfgContainer [2021-11-23 02:33:45,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:33:45,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:33:45,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:33:45,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:33:45,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:33:04" (1/3) ... [2021-11-23 02:33:45,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1188ef73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:33:45, skipping insertion in model container [2021-11-23 02:33:45,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:33:11" (2/3) ... [2021-11-23 02:33:45,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1188ef73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:33:45, skipping insertion in model container [2021-11-23 02:33:45,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:33:45" (3/3) ... [2021-11-23 02:33:45,025 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2021-11-23 02:33:45,032 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:33:45,032 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:33:45,113 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:33:45,122 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:33:45,122 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:33:45,216 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) [2021-11-23 02:33:45,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2021-11-23 02:33:45,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:45,270 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:33:45,271 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:33:45,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:45,278 INFO L85 PathProgramCache]: Analyzing trace with hash 873645182, now seen corresponding path program 1 times [2021-11-23 02:33:45,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:45,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151512321] [2021-11-23 02:33:45,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:45,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2021-11-23 02:33:46,938 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:46,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151512321] [2021-11-23 02:33:46,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151512321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:46,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:33:46,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:33:46,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764765678] [2021-11-23 02:33:46,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:46,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:33:46,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:46,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:33:46,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:33:47,000 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) [2021-11-23 02:33:49,636 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:52,488 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:33:54,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:54,058 INFO L93 Difference]: Finished difference Result 6316 states and 9194 transitions. [2021-11-23 02:33:54,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:33:54,061 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 [2021-11-23 02:33:54,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:54,134 INFO L225 Difference]: With dead ends: 6316 [2021-11-23 02:33:54,134 INFO L226 Difference]: Without dead ends: 4115 [2021-11-23 02:33:54,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:33:54,161 INFO L933 BasicCegarLoop]: 3410 mSDtfsCounter, 2771 mSDsluCounter, 3110 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2771 SdHoareTripleChecker+Valid, 6122 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:54,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2771 Valid, 6122 Invalid, 1011 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 993 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2021-11-23 02:33:54,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2021-11-23 02:33:54,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 4110. [2021-11-23 02:33:54,521 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) [2021-11-23 02:33:54,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4110 states to 4110 states and 5894 transitions. [2021-11-23 02:33:54,566 INFO L78 Accepts]: Start accepts. Automaton has 4110 states and 5894 transitions. Word has length 523 [2021-11-23 02:33:54,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:54,569 INFO L470 AbstractCegarLoop]: Abstraction has 4110 states and 5894 transitions. [2021-11-23 02:33:54,570 INFO L471 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) [2021-11-23 02:33:54,570 INFO L276 IsEmpty]: Start isEmpty. Operand 4110 states and 5894 transitions. [2021-11-23 02:33:54,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2021-11-23 02:33:54,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:54,594 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:33:54,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:33:54,595 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:33:54,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:54,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1003587758, now seen corresponding path program 1 times [2021-11-23 02:33:54,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:54,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335797713] [2021-11-23 02:33:54,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:54,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:55,376 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2021-11-23 02:33:55,376 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:55,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335797713] [2021-11-23 02:33:55,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335797713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:55,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:33:55,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:33:55,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886209998] [2021-11-23 02:33:55,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:55,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:33:55,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:55,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:33:55,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:33:55,389 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) [2021-11-23 02:34:00,132 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:34:01,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:34:01,990 INFO L93 Difference]: Finished difference Result 11821 states and 16935 transitions. [2021-11-23 02:34:01,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:34:01,991 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 [2021-11-23 02:34:01,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:34:02,082 INFO L225 Difference]: With dead ends: 11821 [2021-11-23 02:34:02,082 INFO L226 Difference]: Without dead ends: 7810 [2021-11-23 02:34:02,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:34:02,110 INFO L933 BasicCegarLoop]: 3431 mSDtfsCounter, 2761 mSDsluCounter, 3124 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2761 SdHoareTripleChecker+Valid, 6107 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:34:02,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2761 Valid, 6107 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 983 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2021-11-23 02:34:02,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7810 states. [2021-11-23 02:34:02,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7810 to 7805. [2021-11-23 02:34:02,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7805 states, 4721 states have (on average 1.2948527854268164) internal successors, (6113), 4778 states have internal predecessors, (6113), 2521 states have call successors, (2521), 562 states have call predecessors, (2521), 562 states have return successors, (2521), 2508 states have call predecessors, (2521), 2521 states have call successors, (2521) [2021-11-23 02:34:02,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7805 states to 7805 states and 11155 transitions. [2021-11-23 02:34:02,672 INFO L78 Accepts]: Start accepts. Automaton has 7805 states and 11155 transitions. Word has length 528 [2021-11-23 02:34:02,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:34:02,677 INFO L470 AbstractCegarLoop]: Abstraction has 7805 states and 11155 transitions. [2021-11-23 02:34:02,678 INFO L471 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) [2021-11-23 02:34:02,680 INFO L276 IsEmpty]: Start isEmpty. Operand 7805 states and 11155 transitions. [2021-11-23 02:34:02,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2021-11-23 02:34:02,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:34:02,707 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:34:02,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:34:02,708 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:34:02,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:34:02,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1416517290, now seen corresponding path program 1 times [2021-11-23 02:34:02,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:34:02,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73847178] [2021-11-23 02:34:02,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:34:02,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:34:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:34:03,405 INFO L134 CoverageAnalysis]: Checked inductivity of 9609 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9606 trivial. 0 not checked. [2021-11-23 02:34:03,405 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:34:03,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73847178] [2021-11-23 02:34:03,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73847178] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:34:03,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:34:03,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:34:03,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3898944] [2021-11-23 02:34:03,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:34:03,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:34:03,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:34:03,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:34:03,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:34:03,412 INFO L87 Difference]: Start difference. First operand 7805 states and 11155 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) [2021-11-23 02:34:07,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:34:09,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:34:09,664 INFO L93 Difference]: Finished difference Result 17272 states and 24623 transitions. [2021-11-23 02:34:09,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:34:09,665 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 [2021-11-23 02:34:09,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:34:09,759 INFO L225 Difference]: With dead ends: 17272 [2021-11-23 02:34:09,759 INFO L226 Difference]: Without dead ends: 9566 [2021-11-23 02:34:09,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:34:09,808 INFO L933 BasicCegarLoop]: 3341 mSDtfsCounter, 2444 mSDsluCounter, 3119 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2444 SdHoareTripleChecker+Valid, 6013 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:34:09,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2444 Valid, 6013 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 961 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-11-23 02:34:09,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9566 states. [2021-11-23 02:34:10,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9566 to 9563. [2021-11-23 02:34:10,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9563 states, 5800 states have (on average 1.292758620689655) internal successors, (7498), 5869 states have internal predecessors, (7498), 3054 states have call successors, (3054), 708 states have call predecessors, (3054), 708 states have return successors, (3054), 3039 states have call predecessors, (3054), 3054 states have call successors, (3054) [2021-11-23 02:34:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9563 states to 9563 states and 13606 transitions. [2021-11-23 02:34:10,384 INFO L78 Accepts]: Start accepts. Automaton has 9563 states and 13606 transitions. Word has length 542 [2021-11-23 02:34:10,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:34:10,386 INFO L470 AbstractCegarLoop]: Abstraction has 9563 states and 13606 transitions. [2021-11-23 02:34:10,386 INFO L471 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) [2021-11-23 02:34:10,387 INFO L276 IsEmpty]: Start isEmpty. Operand 9563 states and 13606 transitions. [2021-11-23 02:34:10,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2021-11-23 02:34:10,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:34:10,397 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:34:10,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:34:10,398 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:34:10,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:34:10,399 INFO L85 PathProgramCache]: Analyzing trace with hash -160552341, now seen corresponding path program 1 times [2021-11-23 02:34:10,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:34:10,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041460232] [2021-11-23 02:34:10,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:34:10,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:34:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:34:11,202 INFO L134 CoverageAnalysis]: Checked inductivity of 10306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10306 trivial. 0 not checked. [2021-11-23 02:34:11,202 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:34:11,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041460232] [2021-11-23 02:34:11,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041460232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:34:11,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:34:11,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:34:11,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125685425] [2021-11-23 02:34:11,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:34:11,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:34:11,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:34:11,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:34:11,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:34:11,208 INFO L87 Difference]: Start difference. First operand 9563 states and 13606 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) [2021-11-23 02:34:14,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:34:18,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:34:21,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:34:21,279 INFO L93 Difference]: Finished difference Result 23701 states and 33692 transitions. [2021-11-23 02:34:21,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:34:21,280 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 [2021-11-23 02:34:21,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:34:21,395 INFO L225 Difference]: With dead ends: 23701 [2021-11-23 02:34:21,395 INFO L226 Difference]: Without dead ends: 14237 [2021-11-23 02:34:21,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:34:21,446 INFO L933 BasicCegarLoop]: 3905 mSDtfsCounter, 2700 mSDsluCounter, 3047 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2702 SdHoareTripleChecker+Valid, 6559 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:34:21,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2702 Valid, 6559 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1139 Invalid, 2 Unknown, 0 Unchecked, 9.6s Time] [2021-11-23 02:34:21,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14237 states. [2021-11-23 02:34:22,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14237 to 14228. [2021-11-23 02:34:22,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14228 states, 8625 states have (on average 1.2855652173913044) internal successors, (11088), 8746 states have internal predecessors, (11088), 4542 states have call successors, (4542), 1060 states have call predecessors, (4542), 1060 states have return successors, (4546), 4509 states have call predecessors, (4546), 4542 states have call successors, (4546) [2021-11-23 02:34:22,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14228 states to 14228 states and 20176 transitions. [2021-11-23 02:34:22,173 INFO L78 Accepts]: Start accepts. Automaton has 14228 states and 20176 transitions. Word has length 557 [2021-11-23 02:34:22,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:34:22,175 INFO L470 AbstractCegarLoop]: Abstraction has 14228 states and 20176 transitions. [2021-11-23 02:34:22,176 INFO L471 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) [2021-11-23 02:34:22,176 INFO L276 IsEmpty]: Start isEmpty. Operand 14228 states and 20176 transitions. [2021-11-23 02:34:22,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2021-11-23 02:34:22,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:34:22,196 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:34:22,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:34:22,197 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:34:22,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:34:22,198 INFO L85 PathProgramCache]: Analyzing trace with hash 497808429, now seen corresponding path program 1 times [2021-11-23 02:34:22,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:34:22,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679736623] [2021-11-23 02:34:22,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:34:22,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:34:22,450 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:34:22,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950796741] [2021-11-23 02:34:22,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:34:22,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:34:22,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:34:22,453 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:34:22,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:34:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:34:24,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 9178 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:34:24,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:34:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 9643 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 9447 trivial. 0 not checked. [2021-11-23 02:34:25,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:34:25,968 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:34:25,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679736623] [2021-11-23 02:34:25,968 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:34:25,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950796741] [2021-11-23 02:34:25,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950796741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:34:25,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:34:25,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:34:25,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754306686] [2021-11-23 02:34:25,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:34:25,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:34:25,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:34:25,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:34:25,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:34:25,972 INFO L87 Difference]: Start difference. First operand 14228 states and 20176 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) [2021-11-23 02:34:28,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:34:32,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:34:32,723 INFO L93 Difference]: Finished difference Result 34249 states and 48574 transitions. [2021-11-23 02:34:32,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:34:32,724 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 [2021-11-23 02:34:32,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:34:32,842 INFO L225 Difference]: With dead ends: 34249 [2021-11-23 02:34:32,842 INFO L226 Difference]: Without dead ends: 20757 [2021-11-23 02:34:32,892 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:34:32,893 INFO L933 BasicCegarLoop]: 3517 mSDtfsCounter, 2825 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2825 SdHoareTripleChecker+Valid, 6087 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:34:32,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2825 Valid, 6087 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1025 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-23 02:34:32,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20757 states. [2021-11-23 02:34:34,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20757 to 20751. [2021-11-23 02:34:34,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20751 states, 12634 states have (on average 1.2896944752255817) internal successors, (16294), 12812 states have internal predecessors, (16294), 6548 states have call successors, (6548), 1568 states have call predecessors, (6548), 1568 states have return successors, (6552), 6499 states have call predecessors, (6552), 6548 states have call successors, (6552) [2021-11-23 02:34:34,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20751 states to 20751 states and 29394 transitions. [2021-11-23 02:34:34,199 INFO L78 Accepts]: Start accepts. Automaton has 20751 states and 29394 transitions. Word has length 583 [2021-11-23 02:34:34,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:34:34,201 INFO L470 AbstractCegarLoop]: Abstraction has 20751 states and 29394 transitions. [2021-11-23 02:34:34,201 INFO L471 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) [2021-11-23 02:34:34,201 INFO L276 IsEmpty]: Start isEmpty. Operand 20751 states and 29394 transitions. [2021-11-23 02:34:34,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2021-11-23 02:34:34,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:34:34,226 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:34:34,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:34:34,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:34:34,441 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:34:34,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:34:34,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1316392891, now seen corresponding path program 1 times [2021-11-23 02:34:34,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:34:34,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459870652] [2021-11-23 02:34:34,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:34:34,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:34:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:34:35,262 INFO L134 CoverageAnalysis]: Checked inductivity of 9845 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9842 trivial. 0 not checked. [2021-11-23 02:34:35,262 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:34:35,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459870652] [2021-11-23 02:34:35,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459870652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:34:35,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:34:35,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:34:35,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399246380] [2021-11-23 02:34:35,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:34:35,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:34:35,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:34:35,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:34:35,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:34:35,265 INFO L87 Difference]: Start difference. First operand 20751 states and 29394 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) [2021-11-23 02:34:37,393 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:34:40,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:34:40,975 INFO L93 Difference]: Finished difference Result 49946 states and 70801 transitions. [2021-11-23 02:34:40,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:34:40,980 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 [2021-11-23 02:34:40,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:34:41,260 INFO L225 Difference]: With dead ends: 49946 [2021-11-23 02:34:41,261 INFO L226 Difference]: Without dead ends: 29931 [2021-11-23 02:34:41,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:34:41,331 INFO L933 BasicCegarLoop]: 4018 mSDtfsCounter, 2768 mSDsluCounter, 3117 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2768 SdHoareTripleChecker+Valid, 6686 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:34:41,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2768 Valid, 6686 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-23 02:34:41,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29931 states. [2021-11-23 02:34:42,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29931 to 29923. [2021-11-23 02:34:42,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29923 states, 18259 states have (on average 1.2909250232761926) internal successors, (23571), 18514 states have internal predecessors, (23571), 9385 states have call successors, (9385), 2278 states have call predecessors, (9385), 2278 states have return successors, (9391), 9311 states have call predecessors, (9391), 9385 states have call successors, (9391) [2021-11-23 02:34:42,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29923 states to 29923 states and 42347 transitions. [2021-11-23 02:34:42,987 INFO L78 Accepts]: Start accepts. Automaton has 29923 states and 42347 transitions. Word has length 579 [2021-11-23 02:34:42,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:34:42,988 INFO L470 AbstractCegarLoop]: Abstraction has 29923 states and 42347 transitions. [2021-11-23 02:34:42,988 INFO L471 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) [2021-11-23 02:34:42,988 INFO L276 IsEmpty]: Start isEmpty. Operand 29923 states and 42347 transitions. [2021-11-23 02:34:43,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2021-11-23 02:34:43,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:34:43,009 INFO L514 BasicCegarLoop]: trace histogram [51, 49, 49, 49, 49, 49, 49, 5, 5, 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] [2021-11-23 02:34:43,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:34:43,010 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:34:43,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:34:43,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1352318211, now seen corresponding path program 1 times [2021-11-23 02:34:43,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:34:43,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945910038] [2021-11-23 02:34:43,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:34:43,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:34:43,484 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:34:43,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [297607481] [2021-11-23 02:34:43,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:34:43,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:34:43,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:34:43,487 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:34:43,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:34:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:34:45,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 9127 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:34:45,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:34:46,492 INFO L134 CoverageAnalysis]: Checked inductivity of 9652 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 9444 trivial. 0 not checked. [2021-11-23 02:34:46,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:34:46,493 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:34:46,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945910038] [2021-11-23 02:34:46,493 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:34:46,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297607481] [2021-11-23 02:34:46,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297607481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:34:46,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:34:46,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:34:46,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864661957] [2021-11-23 02:34:46,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:34:46,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:34:46,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:34:46,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:34:46,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:34:46,496 INFO L87 Difference]: Start difference. First operand 29923 states and 42347 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, (62), 3 states have call predecessors, (62), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-23 02:34:49,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:34:53,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:34:53,865 INFO L93 Difference]: Finished difference Result 68296 states and 96713 transitions. [2021-11-23 02:34:53,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:34:53,866 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, (62), 3 states have call predecessors, (62), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 588 [2021-11-23 02:34:53,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:34:54,063 INFO L225 Difference]: With dead ends: 68296 [2021-11-23 02:34:54,063 INFO L226 Difference]: Without dead ends: 39109 [2021-11-23 02:34:54,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:34:54,156 INFO L933 BasicCegarLoop]: 4460 mSDtfsCounter, 2728 mSDsluCounter, 3124 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2728 SdHoareTripleChecker+Valid, 7136 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:34:54,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2728 Valid, 7136 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1263 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2021-11-23 02:34:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39109 states. [2021-11-23 02:34:55,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39109 to 39101. [2021-11-23 02:34:55,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39101 states, 23890 states have (on average 1.2915027208036836) internal successors, (30854), 24222 states have internal predecessors, (30854), 12222 states have call successors, (12222), 2988 states have call predecessors, (12222), 2988 states have return successors, (12230), 12123 states have call predecessors, (12230), 12222 states have call successors, (12230) [2021-11-23 02:34:56,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39101 states to 39101 states and 55306 transitions. [2021-11-23 02:34:56,160 INFO L78 Accepts]: Start accepts. Automaton has 39101 states and 55306 transitions. Word has length 588 [2021-11-23 02:34:56,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:34:56,161 INFO L470 AbstractCegarLoop]: Abstraction has 39101 states and 55306 transitions. [2021-11-23 02:34:56,161 INFO L471 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, (62), 3 states have call predecessors, (62), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-23 02:34:56,161 INFO L276 IsEmpty]: Start isEmpty. Operand 39101 states and 55306 transitions. [2021-11-23 02:34:56,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2021-11-23 02:34:56,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:34:56,188 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:34:56,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:34:56,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:34:56,405 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:34:56,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:34:56,406 INFO L85 PathProgramCache]: Analyzing trace with hash 579828226, now seen corresponding path program 1 times [2021-11-23 02:34:56,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:34:56,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721363405] [2021-11-23 02:34:56,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:34:56,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:34:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:34:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 9941 trivial. 0 not checked. [2021-11-23 02:34:57,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:34:57,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721363405] [2021-11-23 02:34:57,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721363405] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:34:57,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703334866] [2021-11-23 02:34:57,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:34:57,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:34:57,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:34:57,118 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:34:57,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:34:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:34:58,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 9184 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:34:58,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:34:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9954 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 9841 trivial. 0 not checked. [2021-11-23 02:34:59,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:34:59,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703334866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:34:59,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:34:59,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 02:34:59,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548063878] [2021-11-23 02:34:59,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:34:59,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:34:59,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:34:59,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:34:59,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:34:59,836 INFO L87 Difference]: Start difference. First operand 39101 states and 55306 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) [2021-11-23 02:35:02,311 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:35:06,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:35:06,569 INFO L93 Difference]: Finished difference Result 91843 states and 129552 transitions. [2021-11-23 02:35:06,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:35:06,570 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 [2021-11-23 02:35:06,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:35:06,806 INFO L225 Difference]: With dead ends: 91843 [2021-11-23 02:35:06,807 INFO L226 Difference]: Without dead ends: 53478 [2021-11-23 02:35:06,911 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:35:06,912 INFO L933 BasicCegarLoop]: 3545 mSDtfsCounter, 2897 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2897 SdHoareTripleChecker+Valid, 6071 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:35:06,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2897 Valid, 6071 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1033 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2021-11-23 02:35:06,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53478 states. [2021-11-23 02:35:09,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53478 to 53434. [2021-11-23 02:35:09,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53434 states, 32681 states have (on average 1.2904133900431443) internal successors, (42172), 33123 states have internal predecessors, (42172), 16498 states have call successors, (16498), 4254 states have call predecessors, (16498), 4254 states have return successors, (16506), 16368 states have call predecessors, (16506), 16498 states have call successors, (16506) [2021-11-23 02:35:09,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53434 states to 53434 states and 75176 transitions. [2021-11-23 02:35:09,227 INFO L78 Accepts]: Start accepts. Automaton has 53434 states and 75176 transitions. Word has length 588 [2021-11-23 02:35:09,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:35:09,228 INFO L470 AbstractCegarLoop]: Abstraction has 53434 states and 75176 transitions. [2021-11-23 02:35:09,228 INFO L471 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) [2021-11-23 02:35:09,229 INFO L276 IsEmpty]: Start isEmpty. Operand 53434 states and 75176 transitions. [2021-11-23 02:35:09,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2021-11-23 02:35:09,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:35:09,261 INFO L514 BasicCegarLoop]: trace histogram [53, 51, 51, 51, 51, 51, 51, 4, 4, 2, 2, 2, 2, 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] [2021-11-23 02:35:09,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:35:09,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:35:09,481 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:35:09,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:35:09,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1395043930, now seen corresponding path program 1 times [2021-11-23 02:35:09,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:35:09,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165595471] [2021-11-23 02:35:09,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:09,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:35:09,695 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:35:09,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264972277] [2021-11-23 02:35:09,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:09,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:35:09,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:35:09,697 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:35:09,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:35:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:11,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 9250 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:35:11,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:35:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 10447 backedges. 988 proven. 0 refuted. 0 times theorem prover too weak. 9459 trivial. 0 not checked. [2021-11-23 02:35:12,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:35:12,639 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:35:12,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165595471] [2021-11-23 02:35:12,639 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:35:12,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264972277] [2021-11-23 02:35:12,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264972277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:35:12,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:35:12,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:35:12,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580170338] [2021-11-23 02:35:12,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:35:12,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:35:12,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:35:12,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:35:12,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:35:12,642 INFO L87 Difference]: Start difference. First operand 53434 states and 75176 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-23 02:35:15,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:35:21,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:35:21,619 INFO L93 Difference]: Finished difference Result 124731 states and 175308 transitions. [2021-11-23 02:35:21,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:35:21,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 617 [2021-11-23 02:35:21,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:35:22,069 INFO L225 Difference]: With dead ends: 124731 [2021-11-23 02:35:22,070 INFO L226 Difference]: Without dead ends: 72033 [2021-11-23 02:35:22,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:35:22,478 INFO L933 BasicCegarLoop]: 4137 mSDtfsCounter, 2793 mSDsluCounter, 2965 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2793 SdHoareTripleChecker+Valid, 6711 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:35:22,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2793 Valid, 6711 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1211 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-11-23 02:35:22,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72033 states. [2021-11-23 02:35:24,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72033 to 72023. [2021-11-23 02:35:24,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72023 states, 44087 states have (on average 1.2902216072765214) internal successors, (56882), 44689 states have internal predecessors, (56882), 22081 states have call successors, (22081), 5854 states have call predecessors, (22081), 5854 states have return successors, (22089), 21906 states have call predecessors, (22089), 22081 states have call successors, (22089) [2021-11-23 02:35:25,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72023 states to 72023 states and 101052 transitions. [2021-11-23 02:35:25,193 INFO L78 Accepts]: Start accepts. Automaton has 72023 states and 101052 transitions. Word has length 617 [2021-11-23 02:35:25,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:35:25,194 INFO L470 AbstractCegarLoop]: Abstraction has 72023 states and 101052 transitions. [2021-11-23 02:35:25,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (66), 3 states have call predecessors, (66), 3 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-23 02:35:25,195 INFO L276 IsEmpty]: Start isEmpty. Operand 72023 states and 101052 transitions. [2021-11-23 02:35:25,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-11-23 02:35:25,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:35:25,247 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:35:25,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:35:25,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-23 02:35:25,461 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:35:25,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:35:25,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1313534580, now seen corresponding path program 1 times [2021-11-23 02:35:25,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:35:25,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661384101] [2021-11-23 02:35:25,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:25,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:35:26,031 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:35:26,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29303758] [2021-11-23 02:35:26,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:26,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:35:26,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:35:26,033 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:35:26,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:35:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:27,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 9345 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:35:27,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:35:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9643 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 9437 trivial. 0 not checked. [2021-11-23 02:35:28,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:35:28,652 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:35:28,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661384101] [2021-11-23 02:35:28,652 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:35:28,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29303758] [2021-11-23 02:35:28,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29303758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:35:28,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:35:28,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:35:28,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352937827] [2021-11-23 02:35:28,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:35:28,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:35:28,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:35:28,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:35:28,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:35:28,655 INFO L87 Difference]: Start difference. First operand 72023 states and 101052 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) [2021-11-23 02:35:31,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:35:37,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:35:37,291 INFO L93 Difference]: Finished difference Result 212412 states and 297563 transitions. [2021-11-23 02:35:37,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:35:37,292 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 [2021-11-23 02:35:37,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:35:37,888 INFO L225 Difference]: With dead ends: 212412 [2021-11-23 02:35:37,888 INFO L226 Difference]: Without dead ends: 140488 [2021-11-23 02:35:38,287 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:35:38,287 INFO L933 BasicCegarLoop]: 3389 mSDtfsCounter, 3092 mSDsluCounter, 2936 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3092 SdHoareTripleChecker+Valid, 5881 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:35:38,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3092 Valid, 5881 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 932 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-23 02:35:38,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140488 states. [2021-11-23 02:35:43,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140488 to 140398. [2021-11-23 02:35:43,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140398 states, 85923 states have (on average 1.288397751475158) internal successors, (110703), 87182 states have internal predecessors, (110703), 42858 states have call successors, (42858), 11616 states have call predecessors, (42858), 11616 states have return successors, (42874), 42453 states have call predecessors, (42874), 42858 states have call successors, (42874) [2021-11-23 02:35:44,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140398 states to 140398 states and 196435 transitions. [2021-11-23 02:35:44,389 INFO L78 Accepts]: Start accepts. Automaton has 140398 states and 196435 transitions. Word has length 610 [2021-11-23 02:35:44,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:35:44,398 INFO L470 AbstractCegarLoop]: Abstraction has 140398 states and 196435 transitions. [2021-11-23 02:35:44,398 INFO L471 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) [2021-11-23 02:35:44,398 INFO L276 IsEmpty]: Start isEmpty. Operand 140398 states and 196435 transitions. [2021-11-23 02:35:44,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2021-11-23 02:35:44,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:35:44,434 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:35:44,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:35:44,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19e9153b-2060-4304-8750-854a8149d8cc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 02:35:44,660 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION === [kzallocErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:35:44,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:35:44,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1925153041, now seen corresponding path program 1 times [2021-11-23 02:35:44,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:35:44,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26059680] [2021-11-23 02:35:44,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:35:44,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:35:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:35:45,158 INFO L134 CoverageAnalysis]: Checked inductivity of 10770 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10763 trivial. 0 not checked. [2021-11-23 02:35:45,158 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:35:45,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26059680] [2021-11-23 02:35:45,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26059680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:35:45,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:35:45,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:35:45,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523008278] [2021-11-23 02:35:45,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:35:45,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:35:45,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:35:45,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:35:45,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:35:45,161 INFO L87 Difference]: Start difference. First operand 140398 states and 196435 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) [2021-11-23 02:35:48,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []