./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P --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 807baa6191d907795e80ff5436f6f636b6dbcf7109bdc782ca0ac1b857ff64f7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:07:48,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:07:48,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:07:48,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:07:48,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:07:48,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:07:48,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:07:48,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:07:48,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:07:48,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:07:48,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:07:48,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:07:48,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:07:48,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:07:48,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:07:48,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:07:48,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:07:48,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:07:48,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:07:48,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:07:48,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:07:48,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:07:48,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:07:48,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:07:48,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:07:48,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:07:48,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:07:48,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:07:48,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:07:48,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:07:48,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:07:48,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:07:48,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:07:48,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:07:48,719 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:07:48,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:07:48,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:07:48,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:07:48,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:07:48,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:07:48,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:07:48,724 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:07:48,780 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:07:48,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:07:48,780 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:07:48,780 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:07:48,781 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:07:48,781 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:07:48,781 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:07:48,782 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:07:48,782 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:07:48,782 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:07:48,782 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:07:48,782 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:07:48,783 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:07:48,783 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:07:48,783 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:07:48,783 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:07:48,784 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:07:48,784 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:07:48,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:07:48,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:07:48,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:07:48,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:07:48,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:07:48,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:07:48,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:07:48,786 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:07:48,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:07:48,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:07:48,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:07:48,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:07:48,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:07:48,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:07:48,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:07:48,788 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:07:48,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:07:48,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:07:48,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:07:48,788 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:07:48,789 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_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 807baa6191d907795e80ff5436f6f636b6dbcf7109bdc782ca0ac1b857ff64f7 [2021-11-21 00:07:49,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:07:49,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:07:49,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:07:49,173 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:07:49,175 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:07:49,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2021-11-21 00:07:49,272 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/data/ed118f00b/6da53f42530b47c1aa817d1290d65996/FLAGe47ff6ad0 [2021-11-21 00:07:50,814 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:07:50,815 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2021-11-21 00:07:50,910 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/data/ed118f00b/6da53f42530b47c1aa817d1290d65996/FLAGe47ff6ad0 [2021-11-21 00:07:51,312 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/data/ed118f00b/6da53f42530b47c1aa817d1290d65996 [2021-11-21 00:07:51,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:07:51,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:07:51,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:07:51,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:07:51,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:07:51,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:07:51" (1/1) ... [2021-11-21 00:07:51,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d6310f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:51, skipping insertion in model container [2021-11-21 00:07:51,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:07:51" (1/1) ... [2021-11-21 00:07:51,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:07:51,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:07:58,191 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_fe0a02dc-c676-4af1-97f7-3886e2d90ced/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[513173,513186] [2021-11-21 00:07:58,195 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_fe0a02dc-c676-4af1-97f7-3886e2d90ced/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[513320,513333] [2021-11-21 00:07:58,199 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_fe0a02dc-c676-4af1-97f7-3886e2d90ced/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[513459,513472] [2021-11-21 00:07:58,200 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_fe0a02dc-c676-4af1-97f7-3886e2d90ced/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[513617,513630] [2021-11-21 00:07:58,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:07:58,408 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:07:59,269 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_fe0a02dc-c676-4af1-97f7-3886e2d90ced/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[513173,513186] [2021-11-21 00:07:59,270 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_fe0a02dc-c676-4af1-97f7-3886e2d90ced/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[513320,513333] [2021-11-21 00:07:59,270 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_fe0a02dc-c676-4af1-97f7-3886e2d90ced/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[513459,513472] [2021-11-21 00:07:59,271 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_fe0a02dc-c676-4af1-97f7-3886e2d90ced/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[513617,513630] [2021-11-21 00:07:59,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:07:59,689 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:07:59,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:59 WrapperNode [2021-11-21 00:07:59,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:07:59,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:07:59,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:07:59,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:07:59,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:59" (1/1) ... [2021-11-21 00:07:59,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:59" (1/1) ... [2021-11-21 00:08:00,494 INFO L137 Inliner]: procedures = 619, calls = 4098, calls flagged for inlining = 350, calls inlined = 330, statements flattened = 9859 [2021-11-21 00:08:00,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:08:00,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:08:00,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:08:00,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:08:00,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:59" (1/1) ... [2021-11-21 00:08:00,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:59" (1/1) ... [2021-11-21 00:08:00,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:59" (1/1) ... [2021-11-21 00:08:00,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:59" (1/1) ... [2021-11-21 00:08:01,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:59" (1/1) ... [2021-11-21 00:08:01,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:59" (1/1) ... [2021-11-21 00:08:01,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:59" (1/1) ... [2021-11-21 00:08:01,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:08:01,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:08:01,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:08:01,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:08:01,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:59" (1/1) ... [2021-11-21 00:08:01,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:08:01,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:08:01,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:08:01,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:08:01,440 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-21 00:08:01,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-21 00:08:01,441 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 00:08:01,441 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 00:08:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 00:08:01,442 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 00:08:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2021-11-21 00:08:01,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2021-11-21 00:08:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clean_rx_irq [2021-11-21 00:08:01,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clean_rx_irq [2021-11-21 00:08:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_setup_rx_resources [2021-11-21 00:08:01,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_setup_rx_resources [2021-11-21 00:08:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:08:01,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:08:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_tx_ctxtdesc [2021-11-21 00:08:01,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_tx_ctxtdesc [2021-11-21 00:08:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure skb_header_pointer [2021-11-21 00:08:01,445 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_header_pointer [2021-11-21 00:08:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 00:08:01,445 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 00:08:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_eitr [2021-11-21 00:08:01,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_eitr [2021-11-21 00:08:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-21 00:08:01,446 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-21 00:08:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_uc_addr_vf [2021-11-21 00:08:01,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_uc_addr_vf [2021-11-21 00:08:01,447 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2021-11-21 00:08:01,447 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2021-11-21 00:08:01,447 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 00:08:01,448 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 00:08:01,448 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 00:08:01,449 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 00:08:01,449 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~bool~0~TO~~s32~0 [2021-11-21 00:08:01,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~bool~0~TO~~s32~0 [2021-11-21 00:08:01,449 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 00:08:01,449 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 00:08:01,450 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_desc_unused [2021-11-21 00:08:01,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_desc_unused [2021-11-21 00:08:01,450 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_poll_for_ack [2021-11-21 00:08:01,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_poll_for_ack [2021-11-21 00:08:01,451 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_setup_tx_resources [2021-11-21 00:08:01,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_setup_tx_resources [2021-11-21 00:08:01,452 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_remove [2021-11-21 00:08:01,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_remove [2021-11-21 00:08:01,453 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 00:08:01,454 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 00:08:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:08:01,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:08:01,454 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 00:08:01,455 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 00:08:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-21 00:08:01,455 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-21 00:08:01,455 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 00:08:01,455 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 00:08:01,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:08:01,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:08:01,457 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-21 00:08:01,457 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-21 00:08:01,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:08:01,457 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-21 00:08:01,458 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-21 00:08:01,458 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_resume [2021-11-21 00:08:01,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_resume [2021-11-21 00:08:01,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-21 00:08:01,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-21 00:08:01,459 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-21 00:08:01,460 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-21 00:08:01,460 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-21 00:08:01,461 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-21 00:08:01,461 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_mbx_vf [2021-11-21 00:08:01,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_mbx_vf [2021-11-21 00:08:01,461 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_posted_mbx [2021-11-21 00:08:01,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_posted_mbx [2021-11-21 00:08:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_mbx_vf [2021-11-21 00:08:01,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_mbx_vf [2021-11-21 00:08:01,462 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 00:08:01,463 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 00:08:01,463 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-21 00:08:01,464 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-21 00:08:01,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:08:01,464 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reinit_locked [2021-11-21 00:08:01,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reinit_locked [2021-11-21 00:08:01,465 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_up [2021-11-21 00:08:01,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_up [2021-11-21 00:08:01,467 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-21 00:08:01,467 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-21 00:08:01,467 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 00:08:01,468 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 00:08:01,469 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 00:08:01,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 00:08:01,469 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_irq [2021-11-21 00:08:01,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_irq [2021-11-21 00:08:01,469 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_rar_vf [2021-11-21 00:08:01,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_rar_vf [2021-11-21 00:08:01,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:08:01,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:08:01,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:08:01,470 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header_len [2021-11-21 00:08:01,471 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header_len [2021-11-21 00:08:01,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:08:01,472 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 00:08:01,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 00:08:01,472 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_vfta_vf [2021-11-21 00:08:01,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_vfta_vf [2021-11-21 00:08:01,473 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2021-11-21 00:08:01,474 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2021-11-21 00:08:01,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 00:08:01,478 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 00:08:01,478 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_down [2021-11-21 00:08:01,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_down [2021-11-21 00:08:01,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 00:08:01,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 00:08:01,480 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-21 00:08:01,480 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-21 00:08:01,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 00:08:01,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 00:08:01,487 INFO L130 BoogieDeclarations]: Found specification of procedure map_vector_to_txq [2021-11-21 00:08:01,488 INFO L138 BoogieDeclarations]: Found implementation of procedure map_vector_to_txq [2021-11-21 00:08:01,488 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2021-11-21 00:08:01,488 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2021-11-21 00:08:01,488 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_all_rx_resources [2021-11-21 00:08:01,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_all_rx_resources [2021-11-21 00:08:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 00:08:01,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 00:08:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-21 00:08:01,489 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-21 00:08:01,489 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_tx_timeout [2021-11-21 00:08:01,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_tx_timeout [2021-11-21 00:08:01,490 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 00:08:01,490 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 00:08:01,490 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2021-11-21 00:08:01,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2021-11-21 00:08:01,491 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_negotiate_api [2021-11-21 00:08:01,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_negotiate_api [2021-11-21 00:08:01,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:08:01,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 00:08:01,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 00:08:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 00:08:01,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 00:08:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-21 00:08:01,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-21 00:08:01,492 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_alloc_rx_buffers [2021-11-21 00:08:01,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_alloc_rx_buffers [2021-11-21 00:08:01,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-21 00:08:01,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-21 00:08:01,493 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_interrupt_scheme [2021-11-21 00:08:01,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_interrupt_scheme [2021-11-21 00:08:01,493 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-21 00:08:01,494 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-21 00:08:01,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:08:01,494 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-21 00:08:01,494 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-21 00:08:01,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:08:01,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:08:01,495 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 00:08:01,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 00:08:01,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:08:01,495 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 00:08:01,496 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_tx_resources [2021-11-21 00:08:01,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_tx_resources [2021-11-21 00:08:01,496 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_hw_vf [2021-11-21 00:08:01,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_hw_vf [2021-11-21 00:08:01,496 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-21 00:08:01,497 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-21 00:08:01,497 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_maybe_stop_tx [2021-11-21 00:08:01,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_maybe_stop_tx [2021-11-21 00:08:01,497 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_msg_vf [2021-11-21 00:08:01,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_msg_vf [2021-11-21 00:08:01,498 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-21 00:08:01,498 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-21 00:08:01,498 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_busy_poll_recv [2021-11-21 00:08:01,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_busy_poll_recv [2021-11-21 00:08:01,498 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_posted_mbx [2021-11-21 00:08:01,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_posted_mbx [2021-11-21 00:08:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~TO~~s32~0 [2021-11-21 00:08:01,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~TO~~s32~0 [2021-11-21 00:08:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-21 00:08:01,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-21 00:08:01,499 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-21 00:08:01,500 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-21 00:08:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 00:08:01,500 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 00:08:01,500 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~s32~0 [2021-11-21 00:08:01,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~s32~0 [2021-11-21 00:08:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_last_counter_stats [2021-11-21 00:08:01,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_last_counter_stats [2021-11-21 00:08:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_io_resume [2021-11-21 00:08:01,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_io_resume [2021-11-21 00:08:01,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 00:08:01,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 00:08:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_up_complete [2021-11-21 00:08:01,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_up_complete [2021-11-21 00:08:01,502 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2021-11-21 00:08:01,502 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2021-11-21 00:08:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_ivar [2021-11-21 00:08:01,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_ivar [2021-11-21 00:08:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_bit_vf [2021-11-21 00:08:01,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_bit_vf [2021-11-21 00:08:01,503 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 00:08:01,504 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 00:08:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-21 00:08:01,504 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-21 00:08:01,504 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_shutdown [2021-11-21 00:08:01,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_shutdown [2021-11-21 00:08:01,505 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset_interrupt_capability [2021-11-21 00:08:01,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset_interrupt_capability [2021-11-21 00:08:01,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:08:01,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:08:01,505 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-21 00:08:01,506 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-21 00:08:01,506 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_nway_reset [2021-11-21 00:08:01,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_nway_reset [2021-11-21 00:08:01,506 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-21 00:08:01,506 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-21 00:08:01,507 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_obtain_mbx_lock_vf [2021-11-21 00:08:01,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_obtain_mbx_lock_vf [2021-11-21 00:08:01,507 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clean_tx_ring [2021-11-21 00:08:01,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clean_tx_ring [2021-11-21 00:08:01,507 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_rst_vf [2021-11-21 00:08:01,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_rst_vf [2021-11-21 00:08:01,508 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_v2p_mailbox [2021-11-21 00:08:01,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_v2p_mailbox [2021-11-21 00:08:01,508 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-21 00:08:01,508 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-21 00:08:01,508 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_ack_vf [2021-11-21 00:08:01,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_ack_vf [2021-11-21 00:08:01,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:08:01,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:08:01,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:08:01,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:08:01,510 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_update_stats [2021-11-21 00:08:01,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_update_stats [2021-11-21 00:08:01,511 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 00:08:01,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 00:08:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_irq_enable [2021-11-21 00:08:01,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_irq_enable [2021-11-21 00:08:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-21 00:08:01,517 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-21 00:08:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 00:08:01,517 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 00:08:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-21 00:08:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_start_hw_vf [2021-11-21 00:08:01,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_start_hw_vf [2021-11-21 00:08:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-11-21 00:08:01,521 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-11-21 00:08:01,521 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-21 00:08:01,521 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-21 00:08:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure napi_hash_del [2021-11-21 00:08:01,522 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_hash_del [2021-11-21 00:08:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 00:08:01,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 00:08:01,522 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_update_begin [2021-11-21 00:08:01,523 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_update_begin [2021-11-21 00:08:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_all_queues [2021-11-21 00:08:01,523 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_all_queues [2021-11-21 00:08:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_rx_mode [2021-11-21 00:08:01,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_rx_mode [2021-11-21 00:08:01,523 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-21 00:08:01,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-21 00:08:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-21 00:08:01,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-21 00:08:01,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:08:01,524 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:08:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~X~~u32~0~TO~~s32~0 [2021-11-21 00:08:01,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~X~~u32~0~TO~~s32~0 [2021-11-21 00:08:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_poll_for_msg [2021-11-21 00:08:01,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_poll_for_msg [2021-11-21 00:08:01,525 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_suspend [2021-11-21 00:08:01,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_suspend [2021-11-21 00:08:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-21 00:08:01,526 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-21 00:08:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-21 00:08:01,526 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-21 00:08:01,526 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 00:08:01,527 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 00:08:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:08:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 00:08:01,527 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 00:08:01,527 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-21 00:08:01,527 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-21 00:08:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 00:08:01,528 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 00:08:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_link_test [2021-11-21 00:08:01,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_link_test [2021-11-21 00:08:01,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:08:01,529 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_vlan_rx_add_vid [2021-11-21 00:08:01,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_vlan_rx_add_vid [2021-11-21 00:08:01,529 INFO L130 BoogieDeclarations]: Found specification of procedure map_vector_to_rxq [2021-11-21 00:08:01,529 INFO L138 BoogieDeclarations]: Found implementation of procedure map_vector_to_rxq [2021-11-21 00:08:01,529 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~~bool~0~TO~~s32~0 [2021-11-21 00:08:01,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~~bool~0~TO~~s32~0 [2021-11-21 00:08:01,530 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-21 00:08:01,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-21 00:08:01,530 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-21 00:08:01,530 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-21 00:08:01,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:08:01,531 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_get_mac_addr_vf [2021-11-21 00:08:01,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_get_mac_addr_vf [2021-11-21 00:08:01,531 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_configure [2021-11-21 00:08:01,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_configure [2021-11-21 00:08:01,531 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_all_tx_resources [2021-11-21 00:08:01,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_all_tx_resources [2021-11-21 00:08:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-21 00:08:01,532 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-21 00:08:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-21 00:08:01,532 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-21 00:08:01,532 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_get_queues [2021-11-21 00:08:01,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_get_queues [2021-11-21 00:08:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 00:08:01,533 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 00:08:01,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-21 00:08:01,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-21 00:08:01,534 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_msg_read_ack [2021-11-21 00:08:01,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_msg_read_ack [2021-11-21 00:08:01,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:08:01,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:08:01,534 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-21 00:08:01,534 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-21 00:08:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 00:08:01,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 00:08:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 00:08:01,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 00:08:01,535 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-21 00:08:01,536 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-21 00:08:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_open [2021-11-21 00:08:01,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_open [2021-11-21 00:08:01,536 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-21 00:08:01,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-21 00:08:01,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ixgbevf_exit_module_17_2 [2021-11-21 00:08:01,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ixgbevf_exit_module_17_2 [2021-11-21 00:08:01,537 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_mac_link_vf [2021-11-21 00:08:01,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_mac_link_vf [2021-11-21 00:08:01,537 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clear_interrupt_scheme [2021-11-21 00:08:01,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clear_interrupt_scheme [2021-11-21 00:08:01,538 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_get_regs_len [2021-11-21 00:08:01,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_get_regs_len [2021-11-21 00:08:01,538 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-21 00:08:01,538 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-21 00:08:01,538 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 00:08:01,539 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 00:08:01,539 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 00:08:01,539 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 00:08:01,539 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-21 00:08:01,539 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-21 00:08:01,539 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_update_mc_addr_list_vf [2021-11-21 00:08:01,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_update_mc_addr_list_vf [2021-11-21 00:08:01,540 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_rx_resources [2021-11-21 00:08:01,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_rx_resources [2021-11-21 00:08:01,540 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 00:08:01,540 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 00:08:01,541 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-21 00:08:01,541 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-21 00:08:01,541 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:08:01,541 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:08:01,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:08:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_mbx_params_vf [2021-11-21 00:08:01,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_mbx_params_vf [2021-11-21 00:08:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-11-21 00:08:01,542 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-11-21 00:08:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_q_vectors [2021-11-21 00:08:01,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_q_vectors [2021-11-21 00:08:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:08:01,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:08:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_disable_rx_queue [2021-11-21 00:08:01,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_disable_rx_queue [2021-11-21 00:08:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset [2021-11-21 00:08:01,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset [2021-11-21 00:08:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_close [2021-11-21 00:08:01,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_close [2021-11-21 00:08:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-21 00:08:01,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-21 00:08:01,546 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2021-11-21 00:08:01,546 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2021-11-21 00:08:01,546 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2021-11-21 00:08:01,546 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2021-11-21 00:08:01,547 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 00:08:01,547 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 00:08:01,547 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2021-11-21 00:08:01,547 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2021-11-21 00:08:01,547 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-21 00:08:01,547 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-21 00:08:01,548 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-11-21 00:08:01,548 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-11-21 00:08:01,548 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-11-21 00:08:01,548 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-11-21 00:08:01,548 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-21 00:08:01,548 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-21 00:08:01,549 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-11-21 00:08:01,549 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-11-21 00:08:01,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:08:01,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:08:01,549 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-21 00:08:01,550 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-21 00:08:01,550 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 00:08:01,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 00:08:01,550 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clean_rx_ring [2021-11-21 00:08:01,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clean_rx_ring [2021-11-21 00:08:01,550 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_stop_hw_vf [2021-11-21 00:08:01,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_stop_hw_vf [2021-11-21 00:08:01,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2021-11-21 00:08:01,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2021-11-21 00:08:01,551 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset_hw_vf [2021-11-21 00:08:01,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset_hw_vf [2021-11-21 00:08:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-21 00:08:01,552 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-21 00:08:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-21 00:08:01,552 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-21 00:08:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_unmap_and_free_tx_resource [2021-11-21 00:08:01,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_unmap_and_free_tx_resource [2021-11-21 00:08:01,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:08:01,553 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-21 00:08:01,553 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-21 00:08:01,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:08:01,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:08:01,554 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_trap [2021-11-21 00:08:01,554 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_trap [2021-11-21 00:08:03,455 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:08:03,461 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:08:03,653 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:11:17,588 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 00:11:17,708 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:11:22,314 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:11:22,314 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-21 00:11:22,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:11:22 BoogieIcfgContainer [2021-11-21 00:11:22,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:11:22,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:11:22,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:11:22,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:11:22,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:07:51" (1/3) ... [2021-11-21 00:11:22,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc2a124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:11:22, skipping insertion in model container [2021-11-21 00:11:22,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:59" (2/3) ... [2021-11-21 00:11:22,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc2a124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:11:22, skipping insertion in model container [2021-11-21 00:11:22,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:11:22" (3/3) ... [2021-11-21 00:11:22,337 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2021-11-21 00:11:22,344 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:11:22,344 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 00:11:22,419 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:11:22,433 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 [2021-11-21 00:11:22,433 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 00:11:22,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 2721 states, 1638 states have (on average 1.297924297924298) internal successors, (2126), 1681 states have internal predecessors, (2126), 883 states have call successors, (883), 199 states have call predecessors, (883), 198 states have return successors, (876), 872 states have call predecessors, (876), 876 states have call successors, (876) [2021-11-21 00:11:22,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-11-21 00:11:22,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:11:22,556 INFO L514 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:11:22,557 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:11:22,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:11:22,566 INFO L85 PathProgramCache]: Analyzing trace with hash -707308528, now seen corresponding path program 1 times [2021-11-21 00:11:22,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:11:22,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046242105] [2021-11-21 00:11:22,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:22,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:11:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:11:23,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2021-11-21 00:11:23,966 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:11:23,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046242105] [2021-11-21 00:11:23,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046242105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:11:23,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:11:23,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:11:23,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177162261] [2021-11-21 00:11:23,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:11:23,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:11:23,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:11:24,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:11:24,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:11:24,011 INFO L87 Difference]: Start difference. First operand has 2721 states, 1638 states have (on average 1.297924297924298) internal successors, (2126), 1681 states have internal predecessors, (2126), 883 states have call successors, (883), 199 states have call predecessors, (883), 198 states have return successors, (876), 872 states have call predecessors, (876), 876 states have call successors, (876) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-21 00:11:26,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:31,317 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:33,903 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:35,951 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:41,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:11:41,623 INFO L93 Difference]: Finished difference Result 7968 states and 11375 transitions. [2021-11-21 00:11:41,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:11:41,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 310 [2021-11-21 00:11:41,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:11:41,693 INFO L225 Difference]: With dead ends: 7968 [2021-11-21 00:11:41,693 INFO L226 Difference]: Without dead ends: 5295 [2021-11-21 00:11:41,723 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 [2021-11-21 00:11:41,727 INFO L933 BasicCegarLoop]: 4137 mSDtfsCounter, 3706 mSDsluCounter, 3831 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3706 SdHoareTripleChecker+Valid, 7413 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:11:41,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3706 Valid, 7413 Invalid, 1156 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1145 Invalid, 4 Unknown, 0 Unchecked, 17.0s Time] [2021-11-21 00:11:41,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5295 states. [2021-11-21 00:11:42,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5295 to 5293. [2021-11-21 00:11:42,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5293 states, 3201 states have (on average 1.29553264604811) internal successors, (4147), 3284 states have internal predecessors, (4147), 1697 states have call successors, (1697), 394 states have call predecessors, (1697), 393 states have return successors, (1694), 1686 states have call predecessors, (1694), 1694 states have call successors, (1694) [2021-11-21 00:11:42,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 7538 transitions. [2021-11-21 00:11:42,224 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 7538 transitions. Word has length 310 [2021-11-21 00:11:42,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:11:42,230 INFO L470 AbstractCegarLoop]: Abstraction has 5293 states and 7538 transitions. [2021-11-21 00:11:42,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-21 00:11:42,232 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 7538 transitions. [2021-11-21 00:11:42,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2021-11-21 00:11:42,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:11:42,246 INFO L514 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:11:42,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:11:42,246 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:11:42,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:11:42,250 INFO L85 PathProgramCache]: Analyzing trace with hash -691802399, now seen corresponding path program 1 times [2021-11-21 00:11:42,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:11:42,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717815642] [2021-11-21 00:11:42,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:42,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:11:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:11:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2021-11-21 00:11:43,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:11:43,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717815642] [2021-11-21 00:11:43,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717815642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:11:43,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:11:43,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:11:43,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099393602] [2021-11-21 00:11:43,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:11:43,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:11:43,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:11:43,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:11:43,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:11:43,122 INFO L87 Difference]: Start difference. First operand 5293 states and 7538 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-21 00:11:45,248 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:49,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:53,432 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:55,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:01,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:12:01,460 INFO L93 Difference]: Finished difference Result 11804 states and 16813 transitions. [2021-11-21 00:12:01,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:12:01,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 324 [2021-11-21 00:12:01,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:12:01,524 INFO L225 Difference]: With dead ends: 11804 [2021-11-21 00:12:01,525 INFO L226 Difference]: Without dead ends: 6570 [2021-11-21 00:12:01,555 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 [2021-11-21 00:12:01,556 INFO L933 BasicCegarLoop]: 4206 mSDtfsCounter, 2746 mSDsluCounter, 3794 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 19 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2746 SdHoareTripleChecker+Valid, 7450 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:12:01,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2746 Valid, 7450 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1256 Invalid, 4 Unknown, 0 Unchecked, 17.9s Time] [2021-11-21 00:12:01,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6570 states. [2021-11-21 00:12:01,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6570 to 6563. [2021-11-21 00:12:01,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6563 states, 4005 states have (on average 1.2948813982521847) internal successors, (5186), 4105 states have internal predecessors, (5186), 2071 states have call successors, (2071), 487 states have call predecessors, (2071), 485 states have return successors, (2068), 2055 states have call predecessors, (2068), 2068 states have call successors, (2068) [2021-11-21 00:12:01,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6563 states to 6563 states and 9325 transitions. [2021-11-21 00:12:01,995 INFO L78 Accepts]: Start accepts. Automaton has 6563 states and 9325 transitions. Word has length 324 [2021-11-21 00:12:02,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:12:02,000 INFO L470 AbstractCegarLoop]: Abstraction has 6563 states and 9325 transitions. [2021-11-21 00:12:02,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-21 00:12:02,001 INFO L276 IsEmpty]: Start isEmpty. Operand 6563 states and 9325 transitions. [2021-11-21 00:12:02,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-11-21 00:12:02,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:12:02,016 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 4, 4, 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] [2021-11-21 00:12:02,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:12:02,016 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:12:02,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:12:02,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1611800547, now seen corresponding path program 1 times [2021-11-21 00:12:02,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:12:02,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811884804] [2021-11-21 00:12:02,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:12:02,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:12:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:12:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3519 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3519 trivial. 0 not checked. [2021-11-21 00:12:03,051 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:12:03,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811884804] [2021-11-21 00:12:03,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811884804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:12:03,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:12:03,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:12:03,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750652936] [2021-11-21 00:12:03,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:12:03,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:12:03,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:12:03,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:12:03,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:12:03,055 INFO L87 Difference]: Start difference. First operand 6563 states and 9325 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-21 00:12:05,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:11,182 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:13,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:19,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:12:19,786 INFO L93 Difference]: Finished difference Result 11150 states and 15840 transitions. [2021-11-21 00:12:19,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:12:19,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 352 [2021-11-21 00:12:19,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:12:19,886 INFO L225 Difference]: With dead ends: 11150 [2021-11-21 00:12:19,886 INFO L226 Difference]: Without dead ends: 11127 [2021-11-21 00:12:19,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:12:19,899 INFO L933 BasicCegarLoop]: 4160 mSDtfsCounter, 3744 mSDsluCounter, 8491 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3744 SdHoareTripleChecker+Valid, 11522 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:12:19,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3744 Valid, 11522 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1703 Invalid, 3 Unknown, 0 Unchecked, 16.3s Time] [2021-11-21 00:12:19,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11127 states. [2021-11-21 00:12:20,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11127 to 11125. [2021-11-21 00:12:20,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11125 states, 6790 states have (on average 1.2952871870397644) internal successors, (8795), 6956 states have internal predecessors, (8795), 3504 states have call successors, (3504), 831 states have call predecessors, (3504), 829 states have return successors, (3501), 3481 states have call predecessors, (3501), 3501 states have call successors, (3501) [2021-11-21 00:12:20,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11125 states to 11125 states and 15800 transitions. [2021-11-21 00:12:20,542 INFO L78 Accepts]: Start accepts. Automaton has 11125 states and 15800 transitions. Word has length 352 [2021-11-21 00:12:20,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:12:20,543 INFO L470 AbstractCegarLoop]: Abstraction has 11125 states and 15800 transitions. [2021-11-21 00:12:20,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-21 00:12:20,543 INFO L276 IsEmpty]: Start isEmpty. Operand 11125 states and 15800 transitions. [2021-11-21 00:12:20,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2021-11-21 00:12:20,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:12:20,565 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 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] [2021-11-21 00:12:20,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:12:20,566 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:12:20,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:12:20,566 INFO L85 PathProgramCache]: Analyzing trace with hash 27280044, now seen corresponding path program 1 times [2021-11-21 00:12:20,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:12:20,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293721433] [2021-11-21 00:12:20,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:12:20,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:12:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:12:21,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3525 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3522 trivial. 0 not checked. [2021-11-21 00:12:21,288 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:12:21,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293721433] [2021-11-21 00:12:21,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293721433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:12:21,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:12:21,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:12:21,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608365738] [2021-11-21 00:12:21,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:12:21,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:12:21,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:12:21,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:12:21,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:12:21,290 INFO L87 Difference]: Start difference. First operand 11125 states and 15800 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, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-21 00:12:23,408 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:25,873 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:32,343 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:34,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:39,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:12:39,720 INFO L93 Difference]: Finished difference Result 24179 states and 34357 transitions. [2021-11-21 00:12:39,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:12:39,720 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, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 371 [2021-11-21 00:12:39,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:12:39,821 INFO L225 Difference]: With dead ends: 24179 [2021-11-21 00:12:39,821 INFO L226 Difference]: Without dead ends: 15016 [2021-11-21 00:12:39,876 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 [2021-11-21 00:12:39,877 INFO L933 BasicCegarLoop]: 5585 mSDtfsCounter, 2740 mSDsluCounter, 3792 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 15 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2740 SdHoareTripleChecker+Valid, 8827 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:12:39,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2740 Valid, 8827 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1621 Invalid, 4 Unknown, 0 Unchecked, 18.0s Time] [2021-11-21 00:12:39,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15016 states. [2021-11-21 00:12:41,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15016 to 15008. [2021-11-21 00:12:41,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15008 states, 9177 states have (on average 1.2955214122262178) internal successors, (11889), 9400 states have internal predecessors, (11889), 4710 states have call successors, (4710), 1122 states have call predecessors, (4710), 1119 states have return successors, (4707), 4677 states have call predecessors, (4707), 4707 states have call successors, (4707) [2021-11-21 00:12:41,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15008 states to 15008 states and 21306 transitions. [2021-11-21 00:12:41,134 INFO L78 Accepts]: Start accepts. Automaton has 15008 states and 21306 transitions. Word has length 371 [2021-11-21 00:12:41,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:12:41,135 INFO L470 AbstractCegarLoop]: Abstraction has 15008 states and 21306 transitions. [2021-11-21 00:12:41,136 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, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-21 00:12:41,136 INFO L276 IsEmpty]: Start isEmpty. Operand 15008 states and 21306 transitions. [2021-11-21 00:12:41,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2021-11-21 00:12:41,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:12:41,181 INFO L514 BasicCegarLoop]: trace histogram [35, 29, 29, 29, 29, 29, 29, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2021-11-21 00:12:41,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:12:41,181 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:12:41,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:12:41,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1054761777, now seen corresponding path program 1 times [2021-11-21 00:12:41,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:12:41,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268919742] [2021-11-21 00:12:41,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:12:41,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:12:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:12:42,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3770 trivial. 0 not checked. [2021-11-21 00:12:42,198 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:12:42,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268919742] [2021-11-21 00:12:42,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268919742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:12:42,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:12:42,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:12:42,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069042555] [2021-11-21 00:12:42,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:12:42,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:12:42,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:12:42,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:12:42,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:12:42,201 INFO L87 Difference]: Start difference. First operand 15008 states and 21306 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-21 00:12:44,325 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:49,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:52,012 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:58,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:13:09,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:13:09,641 INFO L93 Difference]: Finished difference Result 19990 states and 29219 transitions. [2021-11-21 00:13:09,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:13:09,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 434 [2021-11-21 00:13:09,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:13:09,755 INFO L225 Difference]: With dead ends: 19990 [2021-11-21 00:13:09,755 INFO L226 Difference]: Without dead ends: 19988 [2021-11-21 00:13:09,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:13:09,770 INFO L933 BasicCegarLoop]: 7023 mSDtfsCounter, 4932 mSDsluCounter, 11467 mSDsCounter, 0 mSdLazyCounter, 2909 mSolverCounterSat, 365 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5300 SdHoareTripleChecker+Valid, 17038 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 2909 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:13:09,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5300 Valid, 17038 Invalid, 3278 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [365 Valid, 2909 Invalid, 4 Unknown, 0 Unchecked, 26.7s Time] [2021-11-21 00:13:09,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19988 states. [2021-11-21 00:13:10,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19988 to 15008. [2021-11-21 00:13:10,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15008 states, 9177 states have (on average 1.2954124441538628) internal successors, (11888), 9400 states have internal predecessors, (11888), 4710 states have call successors, (4710), 1122 states have call predecessors, (4710), 1119 states have return successors, (4707), 4677 states have call predecessors, (4707), 4707 states have call successors, (4707) [2021-11-21 00:13:11,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15008 states to 15008 states and 21305 transitions. [2021-11-21 00:13:11,012 INFO L78 Accepts]: Start accepts. Automaton has 15008 states and 21305 transitions. Word has length 434 [2021-11-21 00:13:11,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:13:11,014 INFO L470 AbstractCegarLoop]: Abstraction has 15008 states and 21305 transitions. [2021-11-21 00:13:11,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-21 00:13:11,015 INFO L276 IsEmpty]: Start isEmpty. Operand 15008 states and 21305 transitions. [2021-11-21 00:13:11,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-11-21 00:13:11,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:13:11,059 INFO L514 BasicCegarLoop]: trace histogram [33, 31, 31, 31, 31, 31, 31, 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] [2021-11-21 00:13:11,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:13:11,059 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:13:11,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:13:11,060 INFO L85 PathProgramCache]: Analyzing trace with hash -2098108523, now seen corresponding path program 1 times [2021-11-21 00:13:11,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:13:11,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017256062] [2021-11-21 00:13:11,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:13:11,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:13:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:13:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3854 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3851 trivial. 0 not checked. [2021-11-21 00:13:11,656 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:13:11,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017256062] [2021-11-21 00:13:11,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017256062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:13:11,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:13:11,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:13:11,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536515926] [2021-11-21 00:13:11,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:13:11,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:13:11,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:13:11,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:13:11,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:13:11,659 INFO L87 Difference]: Start difference. First operand 15008 states and 21305 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 00:13:13,785 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:13:23,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:13:25,423 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:13:27,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:13:27,704 INFO L93 Difference]: Finished difference Result 34853 states and 49287 transitions. [2021-11-21 00:13:27,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:13:27,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 431 [2021-11-21 00:13:27,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:13:27,816 INFO L225 Difference]: With dead ends: 34853 [2021-11-21 00:13:27,816 INFO L226 Difference]: Without dead ends: 19904 [2021-11-21 00:13:27,885 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 [2021-11-21 00:13:27,886 INFO L933 BasicCegarLoop]: 3929 mSDtfsCounter, 2718 mSDsluCounter, 3765 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 7173 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:13:27,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2718 Valid, 7173 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1178 Invalid, 3 Unknown, 0 Unchecked, 15.4s Time] [2021-11-21 00:13:27,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19904 states. [2021-11-21 00:13:28,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19904 to 19891. [2021-11-21 00:13:29,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19891 states, 12184 states have (on average 1.2935817465528563) internal successors, (15761), 12470 states have internal predecessors, (15761), 6132 states have call successors, (6132), 1578 states have call predecessors, (6132), 1573 states have return successors, (6131), 6074 states have call predecessors, (6131), 6129 states have call successors, (6131) [2021-11-21 00:13:29,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19891 states to 19891 states and 28024 transitions. [2021-11-21 00:13:29,119 INFO L78 Accepts]: Start accepts. Automaton has 19891 states and 28024 transitions. Word has length 431 [2021-11-21 00:13:29,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:13:29,120 INFO L470 AbstractCegarLoop]: Abstraction has 19891 states and 28024 transitions. [2021-11-21 00:13:29,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 00:13:29,121 INFO L276 IsEmpty]: Start isEmpty. Operand 19891 states and 28024 transitions. [2021-11-21 00:13:29,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2021-11-21 00:13:29,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:13:29,209 INFO L514 BasicCegarLoop]: trace histogram [45, 33, 33, 33, 33, 33, 33, 18, 18, 10, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:13:29,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:13:29,210 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:13:29,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:13:29,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1899880637, now seen corresponding path program 1 times [2021-11-21 00:13:29,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:13:29,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362607771] [2021-11-21 00:13:29,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:13:29,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:13:29,562 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:13:29,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [612929505] [2021-11-21 00:13:29,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:13:29,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:13:29,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:13:29,570 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:13:29,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:13:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:13:32,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 7230 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:13:32,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:13:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5847 backedges. 1009 proven. 0 refuted. 0 times theorem prover too weak. 4838 trivial. 0 not checked. [2021-11-21 00:13:34,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:13:34,826 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:13:34,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362607771] [2021-11-21 00:13:34,826 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:13:34,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612929505] [2021-11-21 00:13:34,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612929505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:13:34,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:13:34,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:13:34,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726343553] [2021-11-21 00:13:34,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:13:34,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:13:34,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:13:34,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:13:34,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:13:34,832 INFO L87 Difference]: Start difference. First operand 19891 states and 28024 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 3 states have call successors, (117), 3 states have call predecessors, (117), 3 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) [2021-11-21 00:13:36,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:13:48,101 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:13:50,144 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:13:51,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:13:51,692 INFO L93 Difference]: Finished difference Result 45594 states and 64220 transitions. [2021-11-21 00:13:51,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:13:51,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 3 states have call successors, (117), 3 states have call predecessors, (117), 3 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) Word has length 875 [2021-11-21 00:13:51,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:13:51,796 INFO L225 Difference]: With dead ends: 45594 [2021-11-21 00:13:51,797 INFO L226 Difference]: Without dead ends: 26305 [2021-11-21 00:13:51,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 873 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:13:51,854 INFO L933 BasicCegarLoop]: 5585 mSDtfsCounter, 2736 mSDsluCounter, 3702 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 55 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2736 SdHoareTripleChecker+Valid, 8793 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:13:51,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2736 Valid, 8793 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1531 Invalid, 3 Unknown, 0 Unchecked, 16.1s Time] [2021-11-21 00:13:51,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26305 states. [2021-11-21 00:13:53,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26305 to 26292. [2021-11-21 00:13:53,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26292 states, 16166 states have (on average 1.2910429296053445) internal successors, (20871), 16539 states have internal predecessors, (20871), 7998 states have call successors, (7998), 2133 states have call predecessors, (7998), 2126 states have return successors, (7999), 7913 states have call predecessors, (7999), 7995 states have call successors, (7999) [2021-11-21 00:13:53,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26292 states to 26292 states and 36868 transitions. [2021-11-21 00:13:53,181 INFO L78 Accepts]: Start accepts. Automaton has 26292 states and 36868 transitions. Word has length 875 [2021-11-21 00:13:53,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:13:53,183 INFO L470 AbstractCegarLoop]: Abstraction has 26292 states and 36868 transitions. [2021-11-21 00:13:53,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 3 states have call successors, (117), 3 states have call predecessors, (117), 3 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) [2021-11-21 00:13:53,183 INFO L276 IsEmpty]: Start isEmpty. Operand 26292 states and 36868 transitions. [2021-11-21 00:13:53,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2021-11-21 00:13:53,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:13:53,489 INFO L514 BasicCegarLoop]: trace histogram [47, 33, 33, 33, 33, 33, 33, 18, 18, 10, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:13:53,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:13:53,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-21 00:13:53,703 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:13:53,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:13:53,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1389555548, now seen corresponding path program 1 times [2021-11-21 00:13:53,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:13:53,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691058306] [2021-11-21 00:13:53,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:13:53,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:13:54,283 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:13:54,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046315068] [2021-11-21 00:13:54,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:13:54,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:13:54,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:13:54,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:13:54,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:13:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:13:56,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 7292 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:13:56,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:13:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6056 backedges. 1200 proven. 0 refuted. 0 times theorem prover too weak. 4856 trivial. 0 not checked. [2021-11-21 00:13:58,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:13:58,848 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:13:58,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691058306] [2021-11-21 00:13:58,848 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:13:58,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046315068] [2021-11-21 00:13:58,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046315068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:13:58,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:13:58,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:13:58,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061229925] [2021-11-21 00:13:58,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:13:58,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:13:58,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:13:58,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:13:58,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:13:58,851 INFO L87 Difference]: Start difference. First operand 26292 states and 36868 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 3 states have call successors, (119), 3 states have call predecessors, (119), 3 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2021-11-21 00:14:00,931 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:14:08,631 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:14:10,678 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:14:12,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:14:12,991 INFO L93 Difference]: Finished difference Result 61874 states and 86386 transitions. [2021-11-21 00:14:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:14:12,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 3 states have call successors, (119), 3 states have call predecessors, (119), 3 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) Word has length 896 [2021-11-21 00:14:12,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:14:13,115 INFO L225 Difference]: With dead ends: 61874 [2021-11-21 00:14:13,115 INFO L226 Difference]: Without dead ends: 36184 [2021-11-21 00:14:13,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 894 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:14:13,181 INFO L933 BasicCegarLoop]: 3919 mSDtfsCounter, 3628 mSDsluCounter, 2949 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 30 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3628 SdHoareTripleChecker+Valid, 6454 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:14:13,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3628 Valid, 6454 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1075 Invalid, 3 Unknown, 0 Unchecked, 13.1s Time] [2021-11-21 00:14:13,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36184 states. [2021-11-21 00:14:14,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36184 to 36169. [2021-11-21 00:14:14,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36169 states, 22280 states have (on average 1.2885547576301615) internal successors, (28709), 22789 states have internal predecessors, (28709), 10807 states have call successors, (10807), 3089 states have call predecessors, (10807), 3080 states have return successors, (10810), 10690 states have call predecessors, (10810), 10804 states have call successors, (10810) [2021-11-21 00:14:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36169 states to 36169 states and 50326 transitions. [2021-11-21 00:14:14,979 INFO L78 Accepts]: Start accepts. Automaton has 36169 states and 50326 transitions. Word has length 896 [2021-11-21 00:14:14,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:14:14,981 INFO L470 AbstractCegarLoop]: Abstraction has 36169 states and 50326 transitions. [2021-11-21 00:14:14,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 3 states have call successors, (119), 3 states have call predecessors, (119), 3 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2021-11-21 00:14:14,981 INFO L276 IsEmpty]: Start isEmpty. Operand 36169 states and 50326 transitions. [2021-11-21 00:14:15,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2021-11-21 00:14:15,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:14:15,143 INFO L514 BasicCegarLoop]: trace histogram [47, 33, 33, 33, 33, 33, 33, 18, 18, 10, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:14:15,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:14:15,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:14:15,359 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:14:15,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:14:15,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1589521522, now seen corresponding path program 1 times [2021-11-21 00:14:15,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:14:15,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147778389] [2021-11-21 00:14:15,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:14:15,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:14:15,910 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:14:15,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1182962423] [2021-11-21 00:14:15,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:14:15,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:14:15,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:14:15,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:14:15,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:14:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:14:18,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 7298 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:14:18,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:14:21,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6058 backedges. 1383 proven. 0 refuted. 0 times theorem prover too weak. 4675 trivial. 0 not checked. [2021-11-21 00:14:21,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:14:21,196 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:14:21,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147778389] [2021-11-21 00:14:21,197 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:14:21,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182962423] [2021-11-21 00:14:21,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182962423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:14:21,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:14:21,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 00:14:21,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093147422] [2021-11-21 00:14:21,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:14:21,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:14:21,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:14:21,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:14:21,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:14:21,202 INFO L87 Difference]: Start difference. First operand 36169 states and 50326 transitions. Second operand has 7 states, 7 states have (on average 43.0) internal successors, (301), 6 states have internal predecessors, (301), 2 states have call successors, (118), 2 states have call predecessors, (118), 3 states have return successors, (117), 3 states have call predecessors, (117), 2 states have call successors, (117) [2021-11-21 00:14:23,296 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:14:42,964 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:14:45,152 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:14:47,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:14:52,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:14:54,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:15:00,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:15:00,561 INFO L93 Difference]: Finished difference Result 81715 states and 115483 transitions. [2021-11-21 00:15:00,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:15:00,561 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 43.0) internal successors, (301), 6 states have internal predecessors, (301), 2 states have call successors, (118), 2 states have call predecessors, (118), 3 states have return successors, (117), 3 states have call predecessors, (117), 2 states have call successors, (117) Word has length 900 [2021-11-21 00:15:00,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:15:00,779 INFO L225 Difference]: With dead ends: 81715 [2021-11-21 00:15:00,779 INFO L226 Difference]: Without dead ends: 46148 [2021-11-21 00:15:00,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 894 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:15:00,878 INFO L933 BasicCegarLoop]: 4495 mSDtfsCounter, 760 mSDsluCounter, 25154 mSDsCounter, 0 mSdLazyCounter, 4407 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 26063 SdHoareTripleChecker+Invalid, 4415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4407 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:15:00,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 26063 Invalid, 4415 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 4407 Invalid, 6 Unknown, 0 Unchecked, 37.7s Time] [2021-11-21 00:15:00,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46148 states. [2021-11-21 00:15:02,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46148 to 36225. [2021-11-21 00:15:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36225 states, 22328 states have (on average 1.287934432103189) internal successors, (28757), 22837 states have internal predecessors, (28757), 10807 states have call successors, (10807), 3089 states have call predecessors, (10807), 3088 states have return successors, (10826), 10698 states have call predecessors, (10826), 10804 states have call successors, (10826) [2021-11-21 00:15:03,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36225 states to 36225 states and 50390 transitions. [2021-11-21 00:15:03,047 INFO L78 Accepts]: Start accepts. Automaton has 36225 states and 50390 transitions. Word has length 900 [2021-11-21 00:15:03,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:15:03,048 INFO L470 AbstractCegarLoop]: Abstraction has 36225 states and 50390 transitions. [2021-11-21 00:15:03,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 43.0) internal successors, (301), 6 states have internal predecessors, (301), 2 states have call successors, (118), 2 states have call predecessors, (118), 3 states have return successors, (117), 3 states have call predecessors, (117), 2 states have call successors, (117) [2021-11-21 00:15:03,049 INFO L276 IsEmpty]: Start isEmpty. Operand 36225 states and 50390 transitions. [2021-11-21 00:15:03,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2021-11-21 00:15:03,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:15:03,125 INFO L514 BasicCegarLoop]: trace histogram [47, 33, 33, 33, 33, 33, 33, 18, 18, 10, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:15:03,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-21 00:15:03,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:15:03,339 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:15:03,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:15:03,339 INFO L85 PathProgramCache]: Analyzing trace with hash -158832446, now seen corresponding path program 1 times [2021-11-21 00:15:03,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:15:03,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217035802] [2021-11-21 00:15:03,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:15:03,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:15:03,713 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:15:03,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859316541] [2021-11-21 00:15:03,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:15:03,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:15:03,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:15:03,715 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:15:03,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:15:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:15:06,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 7326 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:15:06,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:15:08,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6058 backedges. 1383 proven. 0 refuted. 0 times theorem prover too weak. 4675 trivial. 0 not checked. [2021-11-21 00:15:08,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:15:08,433 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:15:08,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217035802] [2021-11-21 00:15:08,433 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:15:08,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859316541] [2021-11-21 00:15:08,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859316541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:15:08,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:15:08,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:15:08,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144253184] [2021-11-21 00:15:08,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:15:08,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:15:08,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:15:08,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:15:08,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:15:08,436 INFO L87 Difference]: Start difference. First operand 36225 states and 50390 transitions. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2021-11-21 00:15:10,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:15:20,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:15:25,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:15:27,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:15:28,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:15:28,664 INFO L93 Difference]: Finished difference Result 72192 states and 100525 transitions. [2021-11-21 00:15:28,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:15:28,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) Word has length 905 [2021-11-21 00:15:28,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:15:28,810 INFO L225 Difference]: With dead ends: 72192 [2021-11-21 00:15:28,811 INFO L226 Difference]: Without dead ends: 36569 [2021-11-21 00:15:28,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 905 GetRequests, 902 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:15:28,908 INFO L933 BasicCegarLoop]: 3349 mSDtfsCounter, 83 mSDsluCounter, 7720 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 24 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 9948 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:15:28,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 9948 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1703 Invalid, 4 Unknown, 0 Unchecked, 18.9s Time] [2021-11-21 00:15:28,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36569 states. [2021-11-21 00:15:30,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36569 to 36241. [2021-11-21 00:15:30,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36241 states, 22344 states have (on average 1.2877282491944146) internal successors, (28773), 22853 states have internal predecessors, (28773), 10807 states have call successors, (10807), 3089 states have call predecessors, (10807), 3088 states have return successors, (10826), 10698 states have call predecessors, (10826), 10804 states have call successors, (10826) [2021-11-21 00:15:30,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36241 states to 36241 states and 50406 transitions. [2021-11-21 00:15:30,466 INFO L78 Accepts]: Start accepts. Automaton has 36241 states and 50406 transitions. Word has length 905 [2021-11-21 00:15:30,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:15:30,468 INFO L470 AbstractCegarLoop]: Abstraction has 36241 states and 50406 transitions. [2021-11-21 00:15:30,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2021-11-21 00:15:30,468 INFO L276 IsEmpty]: Start isEmpty. Operand 36241 states and 50406 transitions. [2021-11-21 00:15:30,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2021-11-21 00:15:30,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:15:30,527 INFO L514 BasicCegarLoop]: trace histogram [47, 33, 33, 33, 33, 33, 33, 18, 18, 10, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:15:30,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:15:30,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-21 00:15:30,735 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:15:30,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:15:30,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2005732684, now seen corresponding path program 1 times [2021-11-21 00:15:30,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:15:30,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874389009] [2021-11-21 00:15:30,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:15:30,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:15:31,248 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:15:31,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254745712] [2021-11-21 00:15:31,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:15:31,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:15:31,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:15:31,250 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:15:31,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:15:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:15:33,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 7353 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:15:33,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:15:35,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6058 backedges. 1383 proven. 0 refuted. 0 times theorem prover too weak. 4675 trivial. 0 not checked. [2021-11-21 00:15:35,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:15:35,752 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:15:35,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874389009] [2021-11-21 00:15:35,752 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:15:35,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254745712] [2021-11-21 00:15:35,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254745712] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:15:35,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:15:35,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:15:35,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204807989] [2021-11-21 00:15:35,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:15:35,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:15:35,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:15:35,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:15:35,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:15:35,756 INFO L87 Difference]: Start difference. First operand 36241 states and 50406 transitions. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2021-11-21 00:15:37,844 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:15:48,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:15:52,501 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:15:54,539 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:15:56,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:15:56,099 INFO L93 Difference]: Finished difference Result 72240 states and 100581 transitions. [2021-11-21 00:15:56,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:15:56,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) Word has length 906 [2021-11-21 00:15:56,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:15:56,349 INFO L225 Difference]: With dead ends: 72240 [2021-11-21 00:15:56,349 INFO L226 Difference]: Without dead ends: 36601 [2021-11-21 00:15:56,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 903 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:15:56,421 INFO L933 BasicCegarLoop]: 3347 mSDtfsCounter, 87 mSDsluCounter, 7721 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 24 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 9949 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:15:56,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 9949 Invalid, 1727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1699 Invalid, 4 Unknown, 0 Unchecked, 19.1s Time] [2021-11-21 00:15:56,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36601 states. [2021-11-21 00:15:57,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36601 to 36257. [2021-11-21 00:15:57,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36257 states, 22360 states have (on average 1.2878801431127012) internal successors, (28797), 22869 states have internal predecessors, (28797), 10807 states have call successors, (10807), 3089 states have call predecessors, (10807), 3088 states have return successors, (10826), 10698 states have call predecessors, (10826), 10804 states have call successors, (10826) [2021-11-21 00:15:57,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36257 states to 36257 states and 50430 transitions. [2021-11-21 00:15:57,786 INFO L78 Accepts]: Start accepts. Automaton has 36257 states and 50430 transitions. Word has length 906 [2021-11-21 00:15:57,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:15:57,787 INFO L470 AbstractCegarLoop]: Abstraction has 36257 states and 50430 transitions. [2021-11-21 00:15:57,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2021-11-21 00:15:57,787 INFO L276 IsEmpty]: Start isEmpty. Operand 36257 states and 50430 transitions. [2021-11-21 00:15:57,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2021-11-21 00:15:57,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:15:57,836 INFO L514 BasicCegarLoop]: trace histogram [47, 33, 33, 33, 33, 33, 33, 18, 18, 10, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:15:57,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 00:15:58,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-21 00:15:58,037 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:15:58,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:15:58,037 INFO L85 PathProgramCache]: Analyzing trace with hash 292676050, now seen corresponding path program 1 times [2021-11-21 00:15:58,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:15:58,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777715167] [2021-11-21 00:15:58,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:15:58,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:15:58,533 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:15:58,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049819229] [2021-11-21 00:15:58,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:15:58,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:15:58,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:15:58,535 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:15:58,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 00:16:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:16:00,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 7337 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 00:16:00,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:16:03,168 INFO L134 CoverageAnalysis]: Checked inductivity of 6058 backedges. 1163 proven. 0 refuted. 0 times theorem prover too weak. 4895 trivial. 0 not checked. [2021-11-21 00:16:03,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:16:03,172 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:16:03,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777715167] [2021-11-21 00:16:03,173 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:16:03,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049819229] [2021-11-21 00:16:03,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049819229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:16:03,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:16:03,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:16:03,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454182177] [2021-11-21 00:16:03,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:16:03,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:16:03,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:16:03,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:16:03,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:16:03,180 INFO L87 Difference]: Start difference. First operand 36257 states and 50430 transitions. Second operand has 6 states, 6 states have (on average 51.0) internal successors, (306), 5 states have internal predecessors, (306), 3 states have call successors, (119), 2 states have call predecessors, (119), 3 states have return successors, (118), 4 states have call predecessors, (118), 3 states have call successors, (118) [2021-11-21 00:16:05,263 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:16:23,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:16:29,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:16:31,701 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:16:38,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:16:38,431 INFO L93 Difference]: Finished difference Result 102411 states and 147825 transitions. [2021-11-21 00:16:38,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:16:38,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 51.0) internal successors, (306), 5 states have internal predecessors, (306), 3 states have call successors, (119), 2 states have call predecessors, (119), 3 states have return successors, (118), 4 states have call predecessors, (118), 3 states have call successors, (118) Word has length 907 [2021-11-21 00:16:38,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:16:38,794 INFO L225 Difference]: With dead ends: 102411 [2021-11-21 00:16:38,794 INFO L226 Difference]: Without dead ends: 66756 [2021-11-21 00:16:38,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 908 GetRequests, 903 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:16:38,881 INFO L933 BasicCegarLoop]: 5098 mSDtfsCounter, 2782 mSDsluCounter, 22147 mSDsCounter, 0 mSdLazyCounter, 3762 mSolverCounterSat, 654 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3461 SdHoareTripleChecker+Valid, 24273 SdHoareTripleChecker+Invalid, 4420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 3762 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:16:38,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3461 Valid, 24273 Invalid, 4420 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [654 Valid, 3762 Invalid, 4 Unknown, 0 Unchecked, 32.5s Time] [2021-11-21 00:16:38,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66756 states. [2021-11-21 00:16:41,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66756 to 36347. [2021-11-21 00:16:41,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36347 states, 22410 states have (on average 1.2875948237394022) internal successors, (28855), 22927 states have internal predecessors, (28855), 10839 states have call successors, (10839), 3089 states have call predecessors, (10839), 3096 states have return successors, (10882), 10732 states have call predecessors, (10882), 10836 states have call successors, (10882) [2021-11-21 00:16:41,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36347 states to 36347 states and 50576 transitions. [2021-11-21 00:16:41,151 INFO L78 Accepts]: Start accepts. Automaton has 36347 states and 50576 transitions. Word has length 907 [2021-11-21 00:16:41,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:16:41,152 INFO L470 AbstractCegarLoop]: Abstraction has 36347 states and 50576 transitions. [2021-11-21 00:16:41,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.0) internal successors, (306), 5 states have internal predecessors, (306), 3 states have call successors, (119), 2 states have call predecessors, (119), 3 states have return successors, (118), 4 states have call predecessors, (118), 3 states have call successors, (118) [2021-11-21 00:16:41,153 INFO L276 IsEmpty]: Start isEmpty. Operand 36347 states and 50576 transitions. [2021-11-21 00:16:41,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2021-11-21 00:16:41,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:16:41,231 INFO L514 BasicCegarLoop]: trace histogram [47, 33, 33, 33, 33, 33, 33, 18, 18, 11, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:16:41,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 00:16:41,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:16:41,447 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:16:41,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:16:41,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1270772063, now seen corresponding path program 1 times [2021-11-21 00:16:41,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:16:41,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262882107] [2021-11-21 00:16:41,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:16:41,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:16:41,734 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:16:41,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1526009505] [2021-11-21 00:16:41,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:16:41,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:16:41,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:16:41,736 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:16:41,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 00:16:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:16:43,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 7572 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 00:16:43,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:16:46,330 INFO L134 CoverageAnalysis]: Checked inductivity of 6138 backedges. 1179 proven. 0 refuted. 0 times theorem prover too weak. 4959 trivial. 0 not checked. [2021-11-21 00:16:46,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:16:46,331 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:16:46,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262882107] [2021-11-21 00:16:46,331 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:16:46,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526009505] [2021-11-21 00:16:46,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526009505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:16:46,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:16:46,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 00:16:46,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719185026] [2021-11-21 00:16:46,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:16:46,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:16:46,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:16:46,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:16:46,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:16:46,336 INFO L87 Difference]: Start difference. First operand 36347 states and 50576 transitions. Second operand has 7 states, 7 states have (on average 45.857142857142854) internal successors, (321), 6 states have internal predecessors, (321), 3 states have call successors, (123), 2 states have call predecessors, (123), 3 states have return successors, (122), 4 states have call predecessors, (122), 3 states have call successors, (122) [2021-11-21 00:16:48,443 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:17:07,423 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:17:09,582 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:17:15,221 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:17:17,263 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:17:30,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:17:31,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:17:31,567 INFO L93 Difference]: Finished difference Result 92740 states and 132687 transitions. [2021-11-21 00:17:31,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:17:31,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.857142857142854) internal successors, (321), 6 states have internal predecessors, (321), 3 states have call successors, (123), 2 states have call predecessors, (123), 3 states have return successors, (122), 4 states have call predecessors, (122), 3 states have call successors, (122) Word has length 952 [2021-11-21 00:17:31,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:17:31,797 INFO L225 Difference]: With dead ends: 92740 [2021-11-21 00:17:31,797 INFO L226 Difference]: Without dead ends: 56995 [2021-11-21 00:17:32,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 954 GetRequests, 947 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:17:32,075 INFO L933 BasicCegarLoop]: 4960 mSDtfsCounter, 2337 mSDsluCounter, 26772 mSDsCounter, 0 mSdLazyCounter, 4507 mSolverCounterSat, 650 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2694 SdHoareTripleChecker+Valid, 28081 SdHoareTripleChecker+Invalid, 5162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 4507 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:17:32,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2694 Valid, 28081 Invalid, 5162 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [650 Valid, 4507 Invalid, 5 Unknown, 0 Unchecked, 42.3s Time] [2021-11-21 00:17:32,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56995 states. [2021-11-21 00:17:34,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56995 to 36355. [2021-11-21 00:17:34,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36355 states, 22418 states have (on average 1.2874921937728612) internal successors, (28863), 22927 states have internal predecessors, (28863), 10839 states have call successors, (10839), 3089 states have call predecessors, (10839), 3096 states have return successors, (10882), 10732 states have call predecessors, (10882), 10836 states have call successors, (10882) [2021-11-21 00:17:34,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36355 states to 36355 states and 50584 transitions. [2021-11-21 00:17:34,235 INFO L78 Accepts]: Start accepts. Automaton has 36355 states and 50584 transitions. Word has length 952 [2021-11-21 00:17:34,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:17:34,240 INFO L470 AbstractCegarLoop]: Abstraction has 36355 states and 50584 transitions. [2021-11-21 00:17:34,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.857142857142854) internal successors, (321), 6 states have internal predecessors, (321), 3 states have call successors, (123), 2 states have call predecessors, (123), 3 states have return successors, (122), 4 states have call predecessors, (122), 3 states have call successors, (122) [2021-11-21 00:17:34,240 INFO L276 IsEmpty]: Start isEmpty. Operand 36355 states and 50584 transitions. [2021-11-21 00:17:34,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2021-11-21 00:17:34,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:17:34,318 INFO L514 BasicCegarLoop]: trace histogram [47, 33, 33, 33, 33, 33, 33, 18, 18, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:17:34,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 00:17:34,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:17:34,531 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:17:34,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:17:34,532 INFO L85 PathProgramCache]: Analyzing trace with hash 25983636, now seen corresponding path program 1 times [2021-11-21 00:17:34,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:17:34,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165331800] [2021-11-21 00:17:34,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:17:34,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:17:35,109 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:17:35,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [933868299] [2021-11-21 00:17:35,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:17:35,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:17:35,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:17:35,115 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:17:35,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 00:17:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:17:37,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 7370 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 00:17:37,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:17:40,070 INFO L134 CoverageAnalysis]: Checked inductivity of 5984 backedges. 1121 proven. 0 refuted. 0 times theorem prover too weak. 4863 trivial. 0 not checked. [2021-11-21 00:17:40,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:17:40,070 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:17:40,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165331800] [2021-11-21 00:17:40,071 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:17:40,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933868299] [2021-11-21 00:17:40,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933868299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:17:40,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:17:40,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 00:17:40,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158825206] [2021-11-21 00:17:40,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:17:40,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:17:40,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:17:40,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:17:40,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:17:40,075 INFO L87 Difference]: Start difference. First operand 36355 states and 50584 transitions. Second operand has 8 states, 8 states have (on average 39.625) internal successors, (317), 7 states have internal predecessors, (317), 4 states have call successors, (121), 2 states have call predecessors, (121), 3 states have return successors, (120), 5 states have call predecessors, (120), 4 states have call successors, (120) [2021-11-21 00:17:42,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:18:08,486 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:18:15,501 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:18:17,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:18:20,058 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:18:22,528 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:18:33,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:18:33,647 INFO L93 Difference]: Finished difference Result 104645 states and 151339 transitions. [2021-11-21 00:18:33,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 00:18:33,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 39.625) internal successors, (317), 7 states have internal predecessors, (317), 4 states have call successors, (121), 2 states have call predecessors, (121), 3 states have return successors, (120), 5 states have call predecessors, (120), 4 states have call successors, (120) Word has length 922 [2021-11-21 00:18:33,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:18:33,875 INFO L225 Difference]: With dead ends: 104645 [2021-11-21 00:18:33,875 INFO L226 Difference]: Without dead ends: 68892 [2021-11-21 00:18:33,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 918 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-11-21 00:18:33,960 INFO L933 BasicCegarLoop]: 5332 mSDtfsCounter, 5340 mSDsluCounter, 33300 mSDsCounter, 0 mSdLazyCounter, 5284 mSolverCounterSat, 2340 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5749 SdHoareTripleChecker+Valid, 34247 SdHoareTripleChecker+Invalid, 7630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2340 IncrementalHoareTripleChecker+Valid, 5284 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:18:33,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5749 Valid, 34247 Invalid, 7630 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2340 Valid, 5284 Invalid, 6 Unknown, 0 Unchecked, 49.2s Time] [2021-11-21 00:18:34,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68892 states. [2021-11-21 00:18:36,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68892 to 36557. [2021-11-21 00:18:36,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36557 states, 22524 states have (on average 1.2864944059669685) internal successors, (28977), 23041 states have internal predecessors, (28977), 10927 states have call successors, (10927), 3089 states have call predecessors, (10927), 3104 states have return successors, (10994), 10822 states have call predecessors, (10994), 10924 states have call successors, (10994) [2021-11-21 00:18:36,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36557 states to 36557 states and 50898 transitions. [2021-11-21 00:18:36,429 INFO L78 Accepts]: Start accepts. Automaton has 36557 states and 50898 transitions. Word has length 922 [2021-11-21 00:18:36,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:18:36,430 INFO L470 AbstractCegarLoop]: Abstraction has 36557 states and 50898 transitions. [2021-11-21 00:18:36,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 39.625) internal successors, (317), 7 states have internal predecessors, (317), 4 states have call successors, (121), 2 states have call predecessors, (121), 3 states have return successors, (120), 5 states have call predecessors, (120), 4 states have call successors, (120) [2021-11-21 00:18:36,431 INFO L276 IsEmpty]: Start isEmpty. Operand 36557 states and 50898 transitions. [2021-11-21 00:18:36,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2021-11-21 00:18:36,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:18:36,481 INFO L514 BasicCegarLoop]: trace histogram [47, 33, 33, 33, 33, 33, 33, 18, 18, 11, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:18:36,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-21 00:18:36,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-21 00:18:36,683 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:18:36,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:18:36,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1938802444, now seen corresponding path program 1 times [2021-11-21 00:18:36,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:18:36,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710276790] [2021-11-21 00:18:36,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:18:36,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:18:37,163 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:18:37,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [999546194] [2021-11-21 00:18:37,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:18:37,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:18:37,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:18:37,165 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:18:37,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 00:18:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:18:39,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 7606 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 00:18:39,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:18:41,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6138 backedges. 871 proven. 0 refuted. 0 times theorem prover too weak. 5267 trivial. 0 not checked. [2021-11-21 00:18:41,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:18:41,450 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:18:41,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710276790] [2021-11-21 00:18:41,450 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:18:41,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999546194] [2021-11-21 00:18:41,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999546194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:18:41,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:18:41,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:18:41,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008648910] [2021-11-21 00:18:41,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:18:41,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:18:41,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:18:41,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:18:41,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:18:41,456 INFO L87 Difference]: Start difference. First operand 36557 states and 50898 transitions. Second operand has 5 states, 5 states have (on average 65.6) internal successors, (328), 4 states have internal predecessors, (328), 3 states have call successors, (124), 3 states have call predecessors, (124), 4 states have return successors, (123), 4 states have call predecessors, (123), 3 states have call successors, (123) [2021-11-21 00:18:43,573 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:18:58,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:19:06,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:19:09,013 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:19:15,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:15,355 INFO L93 Difference]: Finished difference Result 85537 states and 119122 transitions. [2021-11-21 00:19:15,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:19:15,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 4 states have internal predecessors, (328), 3 states have call successors, (124), 3 states have call predecessors, (124), 4 states have return successors, (123), 4 states have call predecessors, (123), 3 states have call successors, (123) Word has length 958 [2021-11-21 00:19:15,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:15,649 INFO L225 Difference]: With dead ends: 85537 [2021-11-21 00:19:15,649 INFO L226 Difference]: Without dead ends: 49582 [2021-11-21 00:19:15,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 954 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:19:15,734 INFO L933 BasicCegarLoop]: 5629 mSDtfsCounter, 2715 mSDsluCounter, 16887 mSDsCounter, 0 mSdLazyCounter, 3543 mSolverCounterSat, 29 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2715 SdHoareTripleChecker+Valid, 20132 SdHoareTripleChecker+Invalid, 3576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3543 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:15,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2715 Valid, 20132 Invalid, 3576 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 3543 Invalid, 4 Unknown, 0 Unchecked, 31.7s Time] [2021-11-21 00:19:15,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49582 states. [2021-11-21 00:19:17,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49582 to 43064. [2021-11-21 00:19:17,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43064 states, 26574 states have (on average 1.28482727477986) internal successors, (34143), 27180 states have internal predecessors, (34143), 12823 states have call successors, (12823), 3640 states have call predecessors, (12823), 3665 states have return successors, (12914), 12699 states have call predecessors, (12914), 12820 states have call successors, (12914) [2021-11-21 00:19:17,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43064 states to 43064 states and 59880 transitions. [2021-11-21 00:19:17,959 INFO L78 Accepts]: Start accepts. Automaton has 43064 states and 59880 transitions. Word has length 958 [2021-11-21 00:19:17,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:17,960 INFO L470 AbstractCegarLoop]: Abstraction has 43064 states and 59880 transitions. [2021-11-21 00:19:17,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.6) internal successors, (328), 4 states have internal predecessors, (328), 3 states have call successors, (124), 3 states have call predecessors, (124), 4 states have return successors, (123), 4 states have call predecessors, (123), 3 states have call successors, (123) [2021-11-21 00:19:17,960 INFO L276 IsEmpty]: Start isEmpty. Operand 43064 states and 59880 transitions. [2021-11-21 00:19:18,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 960 [2021-11-21 00:19:18,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:18,025 INFO L514 BasicCegarLoop]: trace histogram [47, 33, 33, 33, 33, 33, 33, 18, 18, 11, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:19:18,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-21 00:19:18,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-21 00:19:18,238 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:19:18,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:18,238 INFO L85 PathProgramCache]: Analyzing trace with hash -482071082, now seen corresponding path program 1 times [2021-11-21 00:19:18,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:18,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904194292] [2021-11-21 00:19:18,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:18,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:18,685 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:19:18,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215381121] [2021-11-21 00:19:18,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:18,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:19:18,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:19:18,686 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:19:18,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 00:19:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:20,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 7607 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 00:19:20,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:19:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6138 backedges. 871 proven. 0 refuted. 0 times theorem prover too weak. 5267 trivial. 0 not checked. [2021-11-21 00:19:22,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:19:22,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:22,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904194292] [2021-11-21 00:19:22,793 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:19:22,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215381121] [2021-11-21 00:19:22,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215381121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:19:22,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:19:22,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:19:22,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850808379] [2021-11-21 00:19:22,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:22,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:19:22,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:22,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:19:22,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:19:22,914 INFO L87 Difference]: Start difference. First operand 43064 states and 59880 transitions. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 4 states have internal predecessors, (329), 3 states have call successors, (124), 3 states have call predecessors, (124), 4 states have return successors, (123), 4 states have call predecessors, (123), 3 states have call successors, (123) [2021-11-21 00:19:25,004 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:19:39,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:19:41,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:19:52,563 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:19:54,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:20:00,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:20:00,490 INFO L93 Difference]: Finished difference Result 92062 states and 128104 transitions. [2021-11-21 00:20:00,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:20:00,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 4 states have internal predecessors, (329), 3 states have call successors, (124), 3 states have call predecessors, (124), 4 states have return successors, (123), 4 states have call predecessors, (123), 3 states have call successors, (123) Word has length 959 [2021-11-21 00:20:00,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:20:00,710 INFO L225 Difference]: With dead ends: 92062 [2021-11-21 00:20:00,710 INFO L226 Difference]: Without dead ends: 49600 [2021-11-21 00:20:00,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 955 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:20:00,972 INFO L933 BasicCegarLoop]: 5642 mSDtfsCounter, 2780 mSDsluCounter, 16932 mSDsCounter, 0 mSdLazyCounter, 3592 mSolverCounterSat, 56 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2781 SdHoareTripleChecker+Valid, 20167 SdHoareTripleChecker+Invalid, 3653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3592 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:20:00,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2781 Valid, 20167 Invalid, 3653 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 3592 Invalid, 5 Unknown, 0 Unchecked, 35.1s Time] [2021-11-21 00:20:01,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49600 states. [2021-11-21 00:20:03,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49600 to 49571. [2021-11-21 00:20:03,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49571 states, 30624 states have (on average 1.2837970219435737) internal successors, (39315), 31319 states have internal predecessors, (39315), 14719 states have call successors, (14719), 4191 states have call predecessors, (14719), 4226 states have return successors, (14834), 14576 states have call predecessors, (14834), 14716 states have call successors, (14834) [2021-11-21 00:20:03,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49571 states to 49571 states and 68868 transitions. [2021-11-21 00:20:03,473 INFO L78 Accepts]: Start accepts. Automaton has 49571 states and 68868 transitions. Word has length 959 [2021-11-21 00:20:03,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:20:03,474 INFO L470 AbstractCegarLoop]: Abstraction has 49571 states and 68868 transitions. [2021-11-21 00:20:03,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 4 states have internal predecessors, (329), 3 states have call successors, (124), 3 states have call predecessors, (124), 4 states have return successors, (123), 4 states have call predecessors, (123), 3 states have call successors, (123) [2021-11-21 00:20:03,475 INFO L276 IsEmpty]: Start isEmpty. Operand 49571 states and 68868 transitions. [2021-11-21 00:20:03,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2021-11-21 00:20:03,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:20:03,547 INFO L514 BasicCegarLoop]: trace histogram [47, 33, 33, 33, 33, 33, 33, 18, 18, 11, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:20:03,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-21 00:20:03,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-21 00:20:03,763 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:20:03,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:20:03,763 INFO L85 PathProgramCache]: Analyzing trace with hash 811474613, now seen corresponding path program 1 times [2021-11-21 00:20:03,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:20:03,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394573870] [2021-11-21 00:20:03,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:20:03,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:20:04,229 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:20:04,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668269702] [2021-11-21 00:20:04,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:20:04,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:20:04,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:20:04,231 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:20:04,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe0a02dc-c676-4af1-97f7-3886e2d90ced/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-21 00:20:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:20:06,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 7612 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 00:20:06,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:20:08,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6138 backedges. 871 proven. 0 refuted. 0 times theorem prover too weak. 5267 trivial. 0 not checked. [2021-11-21 00:20:08,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:20:08,495 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:20:08,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394573870] [2021-11-21 00:20:08,495 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:20:08,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668269702] [2021-11-21 00:20:08,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668269702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:20:08,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:20:08,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:20:08,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34901895] [2021-11-21 00:20:08,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:20:08,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:20:08,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:20:08,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:20:08,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:20:08,498 INFO L87 Difference]: Start difference. First operand 49571 states and 68868 transitions. Second operand has 5 states, 5 states have (on average 66.4) internal successors, (332), 4 states have internal predecessors, (332), 3 states have call successors, (124), 3 states have call predecessors, (124), 4 states have return successors, (123), 4 states have call predecessors, (123), 3 states have call successors, (123) [2021-11-21 00:20:10,584 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:20:28,537 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:20:30,576 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []