./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 949424244b253eebe8c539a6549e978b334eb11066ed24813c344448dac2db32 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 00:21:10,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:21:10,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:21:10,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:21:10,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:21:10,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:21:10,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:21:10,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:21:10,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:21:10,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:21:10,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:21:10,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:21:10,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:21:10,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:21:10,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:21:10,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:21:10,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:21:10,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:21:10,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:21:10,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:21:10,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:21:10,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:21:10,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:21:10,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:21:10,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:21:10,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:21:10,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:21:10,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:21:10,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:21:10,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:21:10,327 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:21:10,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:21:10,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:21:10,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:21:10,332 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:21:10,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:21:10,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:21:10,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:21:10,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:21:10,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:21:10,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:21:10,338 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 00:21:10,366 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:21:10,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:21:10,367 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:21:10,368 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:21:10,368 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:21:10,369 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:21:10,369 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:21:10,369 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:21:10,370 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:21:10,370 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:21:10,370 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:21:10,371 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:21:10,371 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:21:10,371 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:21:10,372 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:21:10,372 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:21:10,372 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:21:10,372 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:21:10,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:21:10,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:21:10,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:21:10,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:21:10,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:21:10,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:21:10,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:21:10,377 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:21:10,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:21:10,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:21:10,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:21:10,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:21:10,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:21:10,379 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:21:10,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:21:10,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:21:10,379 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:21:10,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:21:10,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:21:10,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:21:10,380 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 949424244b253eebe8c539a6549e978b334eb11066ed24813c344448dac2db32 [2022-11-22 00:21:10,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:21:10,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:21:10,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:21:10,860 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:21:10,861 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:21:10,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2022-11-22 00:21:14,717 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:21:15,557 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:21:15,558 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2022-11-22 00:21:15,629 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/data/dceae14f6/f0b3eb53f4544ff89f929529ed386559/FLAGa84a3925c [2022-11-22 00:21:15,692 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/data/dceae14f6/f0b3eb53f4544ff89f929529ed386559 [2022-11-22 00:21:15,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:21:15,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:21:15,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:21:15,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:21:15,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:21:15,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:21:15" (1/1) ... [2022-11-22 00:21:15,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc10a37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:21:15, skipping insertion in model container [2022-11-22 00:21:15,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:21:15" (1/1) ... [2022-11-22 00:21:15,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:21:15,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:21:19,707 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i[422408,422421] [2022-11-22 00:21:19,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:21:20,003 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:21:20,789 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i[422408,422421] [2022-11-22 00:21:20,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:21:21,173 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:21:21,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:21:21 WrapperNode [2022-11-22 00:21:21,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:21:21,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:21:21,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:21:21,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:21:21,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:21:21" (1/1) ... [2022-11-22 00:21:21,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:21:21" (1/1) ... [2022-11-22 00:21:21,930 INFO L138 Inliner]: procedures = 367, calls = 5946, calls flagged for inlining = 162, calls inlined = 160, statements flattened = 12635 [2022-11-22 00:21:21,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:21:21,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:21:21,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:21:21,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:21:21,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:21:21" (1/1) ... [2022-11-22 00:21:21,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:21:21" (1/1) ... [2022-11-22 00:21:22,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:21:21" (1/1) ... [2022-11-22 00:21:22,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:21:21" (1/1) ... [2022-11-22 00:21:22,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:21:21" (1/1) ... [2022-11-22 00:21:22,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:21:21" (1/1) ... [2022-11-22 00:21:22,671 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:21:21" (1/1) ... [2022-11-22 00:21:22,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:21:21" (1/1) ... [2022-11-22 00:21:22,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:21:22,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:21:22,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:21:22,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:21:22,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:21:21" (1/1) ... [2022-11-22 00:21:22,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:21:22,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:21:22,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:21:22,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:21:22,943 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-22 00:21:22,943 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-22 00:21:22,944 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-22 00:21:22,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-22 00:21:22,944 INFO L130 BoogieDeclarations]: Found specification of procedure map_index_to_lba [2022-11-22 00:21:22,944 INFO L138 BoogieDeclarations]: Found implementation of procedure map_index_to_lba [2022-11-22 00:21:22,944 INFO L130 BoogieDeclarations]: Found specification of procedure sector_size_show [2022-11-22 00:21:22,944 INFO L138 BoogieDeclarations]: Found implementation of procedure sector_size_show [2022-11-22 00:21:22,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 00:21:22,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 00:21:22,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 00:21:22,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 00:21:22,946 INFO L130 BoogieDeclarations]: Found specification of procedure dif_show [2022-11-22 00:21:22,946 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_show [2022-11-22 00:21:22,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 00:21:22,947 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 00:21:22,947 INFO L130 BoogieDeclarations]: Found specification of procedure stop_all_queued [2022-11-22 00:21:22,947 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_all_queued [2022-11-22 00:21:22,947 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_remove_adapter [2022-11-22 00:21:22,947 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_remove_adapter [2022-11-22 00:21:22,947 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_lbp [2022-11-22 00:21:22,948 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_lbp [2022-11-22 00:21:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_queuecommand_lock_or_not [2022-11-22 00:21:22,948 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_queuecommand_lock_or_not [2022-11-22 00:21:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-22 00:21:22,949 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-22 00:21:22,950 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_host_reset [2022-11-22 00:21:22,950 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_host_reset [2022-11-22 00:21:22,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-22 00:21:22,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-22 00:21:22,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 00:21:22,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 00:21:22,952 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bufflen [2022-11-22 00:21:22,952 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bufflen [2022-11-22 00:21:22,952 INFO L130 BoogieDeclarations]: Found specification of procedure dev_size_mb_show [2022-11-22 00:21:22,952 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_size_mb_show [2022-11-22 00:21:22,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-22 00:21:22,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-22 00:21:22,953 INFO L130 BoogieDeclarations]: Found specification of procedure num_parts_show [2022-11-22 00:21:22,953 INFO L138 BoogieDeclarations]: Found implementation of procedure num_parts_show [2022-11-22 00:21:22,953 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_level_show [2022-11-22 00:21:22,953 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_level_show [2022-11-22 00:21:22,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2022-11-22 00:21:22,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2022-11-22 00:21:22,954 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be16 [2022-11-22 00:21:22,954 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be16 [2022-11-22 00:21:22,954 INFO L130 BoogieDeclarations]: Found specification of procedure fill_from_dev_buffer [2022-11-22 00:21:22,954 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_from_dev_buffer [2022-11-22 00:21:22,954 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_slave_destroy [2022-11-22 00:21:22,955 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_slave_destroy [2022-11-22 00:21:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure map_region [2022-11-22 00:21:22,956 INFO L138 BoogieDeclarations]: Found implementation of procedure map_region [2022-11-22 00:21:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 00:21:22,956 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 00:21:22,956 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-22 00:21:22,956 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-22 00:21:22,957 INFO L130 BoogieDeclarations]: Found specification of procedure fetch_to_dev_buffer [2022-11-22 00:21:22,957 INFO L138 BoogieDeclarations]: Found implementation of procedure fetch_to_dev_buffer [2022-11-22 00:21:22,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 00:21:22,957 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 00:21:22,957 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_set_guard [2022-11-22 00:21:22,957 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_set_guard [2022-11-22 00:21:22,957 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 00:21:22,958 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 00:21:22,958 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_info [2022-11-22 00:21:22,958 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_info [2022-11-22 00:21:22,958 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sglist [2022-11-22 00:21:22,958 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sglist [2022-11-22 00:21:22,958 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_abort [2022-11-22 00:21:22,959 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_abort [2022-11-22 00:21:22,959 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2022-11-22 00:21:22,959 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2022-11-22 00:21:22,959 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_resp [2022-11-22 00:21:22,959 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_resp [2022-11-22 00:21:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure pseudo_lld_bus_match [2022-11-22 00:21:22,960 INFO L138 BoogieDeclarations]: Found implementation of procedure pseudo_lld_bus_match [2022-11-22 00:21:22,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:21:22,961 INFO L130 BoogieDeclarations]: Found specification of procedure host_lock_show [2022-11-22 00:21:22,961 INFO L138 BoogieDeclarations]: Found implementation of procedure host_lock_show [2022-11-22 00:21:22,961 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-22 00:21:22,963 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_bus_reset [2022-11-22 00:21:22,963 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_bus_reset [2022-11-22 00:21:22,963 INFO L130 BoogieDeclarations]: Found specification of procedure no_lun_0_show [2022-11-22 00:21:22,963 INFO L138 BoogieDeclarations]: Found implementation of procedure no_lun_0_show [2022-11-22 00:21:22,963 INFO L130 BoogieDeclarations]: Found specification of procedure dif_copy_prot [2022-11-22 00:21:22,963 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_copy_prot [2022-11-22 00:21:22,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:21:22,964 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be64 [2022-11-22 00:21:22,964 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be64 [2022-11-22 00:21:22,964 INFO L130 BoogieDeclarations]: Found specification of procedure resp_err_recov_pg [2022-11-22 00:21:22,964 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_err_recov_pg [2022-11-22 00:21:22,964 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-22 00:21:22,965 INFO L130 BoogieDeclarations]: Found specification of procedure map_show [2022-11-22 00:21:22,966 INFO L138 BoogieDeclarations]: Found implementation of procedure map_show [2022-11-22 00:21:22,966 INFO L130 BoogieDeclarations]: Found specification of procedure no_uld_show [2022-11-22 00:21:22,966 INFO L138 BoogieDeclarations]: Found implementation of procedure no_uld_show [2022-11-22 00:21:22,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-22 00:21:22,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-22 00:21:22,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 00:21:22,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 00:21:22,967 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 00:21:22,967 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 00:21:22,967 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_build_sense_buffer [2022-11-22 00:21:22,968 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_build_sense_buffer [2022-11-22 00:21:22,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:21:22,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 00:21:22,968 INFO L130 BoogieDeclarations]: Found specification of procedure removable_show [2022-11-22 00:21:22,968 INFO L138 BoogieDeclarations]: Found implementation of procedure removable_show [2022-11-22 00:21:22,968 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-22 00:21:22,969 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-22 00:21:22,970 INFO L130 BoogieDeclarations]: Found specification of procedure num_tgts_show [2022-11-22 00:21:22,973 INFO L138 BoogieDeclarations]: Found implementation of procedure num_tgts_show [2022-11-22 00:21:22,974 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_device_create [2022-11-22 00:21:22,974 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_device_create [2022-11-22 00:21:22,974 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-22 00:21:22,975 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-22 00:21:22,976 INFO L130 BoogieDeclarations]: Found specification of procedure resp_sas_pcd_m_spg [2022-11-22 00:21:22,977 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_sas_pcd_m_spg [2022-11-22 00:21:22,977 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-22 00:21:22,977 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-22 00:21:22,981 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-22 00:21:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-22 00:21:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure find_last_bit [2022-11-22 00:21:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure find_last_bit [2022-11-22 00:21:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_ioctl [2022-11-22 00:21:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_ioctl [2022-11-22 00:21:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure max_queue_show [2022-11-22 00:21:22,983 INFO L138 BoogieDeclarations]: Found implementation of procedure max_queue_show [2022-11-22 00:21:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_next [2022-11-22 00:21:22,983 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_next [2022-11-22 00:21:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-22 00:21:22,983 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-22 00:21:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure check_device_access_params [2022-11-22 00:21:22,983 INFO L138 BoogieDeclarations]: Found implementation of procedure check_device_access_params [2022-11-22 00:21:22,984 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_priv [2022-11-22 00:21:22,984 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_cmd_priv [2022-11-22 00:21:22,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 00:21:22,984 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_start [2022-11-22 00:21:22,984 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_start [2022-11-22 00:21:22,984 INFO L130 BoogieDeclarations]: Found specification of procedure strict_show [2022-11-22 00:21:22,984 INFO L138 BoogieDeclarations]: Found implementation of procedure strict_show [2022-11-22 00:21:22,984 INFO L130 BoogieDeclarations]: Found specification of procedure dif_verify [2022-11-22 00:21:22,985 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_verify [2022-11-22 00:21:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure resp_sas_sf_m_pg [2022-11-22 00:21:22,985 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_sas_sf_m_pg [2022-11-22 00:21:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2022-11-22 00:21:22,985 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2022-11-22 00:21:22,985 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2022-11-22 00:21:22,985 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2022-11-22 00:21:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure resp_read_dt0 [2022-11-22 00:21:22,986 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_read_dt0 [2022-11-22 00:21:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 00:21:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure resp_disconnect_pg [2022-11-22 00:21:22,986 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_disconnect_pg [2022-11-22 00:21:22,986 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2022-11-22 00:21:22,986 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2022-11-22 00:21:22,987 INFO L130 BoogieDeclarations]: Found specification of procedure dsense_show [2022-11-22 00:21:22,987 INFO L138 BoogieDeclarations]: Found implementation of procedure dsense_show [2022-11-22 00:21:22,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:21:22,987 INFO L130 BoogieDeclarations]: Found specification of procedure resp_format_pg [2022-11-22 00:21:22,987 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_format_pg [2022-11-22 00:21:22,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2022-11-22 00:21:22,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2022-11-22 00:21:22,988 INFO L130 BoogieDeclarations]: Found specification of procedure lba_to_map_index [2022-11-22 00:21:22,988 INFO L138 BoogieDeclarations]: Found implementation of procedure lba_to_map_index [2022-11-22 00:21:22,988 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_prot_sglist [2022-11-22 00:21:22,988 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_prot_sglist [2022-11-22 00:21:22,988 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-22 00:21:22,988 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-22 00:21:22,988 INFO L130 BoogieDeclarations]: Found specification of procedure resp_write_same [2022-11-22 00:21:22,988 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_write_same [2022-11-22 00:21:22,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 00:21:22,989 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 00:21:22,989 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2022-11-22 00:21:22,989 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2022-11-22 00:21:22,989 INFO L130 BoogieDeclarations]: Found specification of procedure ndelay_show [2022-11-22 00:21:22,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ndelay_show [2022-11-22 00:21:22,989 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be64 [2022-11-22 00:21:22,990 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be64 [2022-11-22 00:21:22,990 INFO L130 BoogieDeclarations]: Found specification of procedure resp_caching_pg [2022-11-22 00:21:22,990 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_caching_pg [2022-11-22 00:21:22,990 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 00:21:22,990 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 00:21:22,990 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_queuecommand [2022-11-22 00:21:22,990 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_queuecommand [2022-11-22 00:21:22,990 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-22 00:21:22,994 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-22 00:21:22,994 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-22 00:21:22,994 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-22 00:21:22,994 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_slave_alloc [2022-11-22 00:21:22,995 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_slave_alloc [2022-11-22 00:21:22,995 INFO L130 BoogieDeclarations]: Found specification of procedure resp_iec_m_pg [2022-11-22 00:21:22,995 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_iec_m_pg [2022-11-22 00:21:22,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:21:22,995 INFO L130 BoogieDeclarations]: Found specification of procedure resp_write_dt0 [2022-11-22 00:21:22,995 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_write_dt0 [2022-11-22 00:21:22,995 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_change_qdepth [2022-11-22 00:21:22,995 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_change_qdepth [2022-11-22 00:21:22,996 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock_irqrestore [2022-11-22 00:21:22,996 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock_irqrestore [2022-11-22 00:21:22,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 00:21:22,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 00:21:22,996 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_show_info [2022-11-22 00:21:22,996 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_show_info [2022-11-22 00:21:22,996 INFO L130 BoogieDeclarations]: Found specification of procedure ptype_show [2022-11-22 00:21:22,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ptype_show [2022-11-22 00:21:22,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-22 00:21:22,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-22 00:21:22,997 INFO L130 BoogieDeclarations]: Found specification of procedure root_device_unregister [2022-11-22 00:21:22,997 INFO L138 BoogieDeclarations]: Found implementation of procedure root_device_unregister [2022-11-22 00:21:22,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:21:22,997 INFO L130 BoogieDeclarations]: Found specification of procedure unmap_region [2022-11-22 00:21:22,997 INFO L138 BoogieDeclarations]: Found implementation of procedure unmap_region [2022-11-22 00:21:22,998 INFO L130 BoogieDeclarations]: Found specification of procedure fake_rw_show [2022-11-22 00:21:22,998 INFO L138 BoogieDeclarations]: Found implementation of procedure fake_rw_show [2022-11-22 00:21:22,998 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-11-22 00:21:22,998 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-11-22 00:21:22,998 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-22 00:21:22,998 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-22 00:21:22,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-22 00:21:22,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-22 00:21:22,999 INFO L130 BoogieDeclarations]: Found specification of procedure mk_sense_invalid_fld [2022-11-22 00:21:22,999 INFO L138 BoogieDeclarations]: Found implementation of procedure mk_sense_invalid_fld [2022-11-22 00:21:22,999 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sg_count [2022-11-22 00:21:22,999 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sg_count [2022-11-22 00:21:22,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:21:22,999 INFO L130 BoogieDeclarations]: Found specification of procedure max_luns_show [2022-11-22 00:21:22,999 INFO L138 BoogieDeclarations]: Found implementation of procedure max_luns_show [2022-11-22 00:21:22,999 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irqsave [2022-11-22 00:21:23,000 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irqsave [2022-11-22 00:21:23,000 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-22 00:21:23,000 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-22 00:21:23,000 INFO L130 BoogieDeclarations]: Found specification of procedure hrtimer_cancel [2022-11-22 00:21:23,000 INFO L138 BoogieDeclarations]: Found implementation of procedure hrtimer_cancel [2022-11-22 00:21:23,000 INFO L130 BoogieDeclarations]: Found specification of procedure opts_show [2022-11-22 00:21:23,000 INFO L138 BoogieDeclarations]: Found implementation of procedure opts_show [2022-11-22 00:21:23,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:21:23,002 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-11-22 00:21:23,009 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-11-22 00:21:23,009 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 00:21:23,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 00:21:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure devInfoReg [2022-11-22 00:21:23,010 INFO L138 BoogieDeclarations]: Found implementation of procedure devInfoReg [2022-11-22 00:21:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure guard_show [2022-11-22 00:21:23,010 INFO L138 BoogieDeclarations]: Found implementation of procedure guard_show [2022-11-22 00:21:23,010 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_device_reset [2022-11-22 00:21:23,010 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_device_reset [2022-11-22 00:21:23,011 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irqrestore [2022-11-22 00:21:23,013 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irqrestore [2022-11-22 00:21:23,013 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit [2022-11-22 00:21:23,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit [2022-11-22 00:21:23,013 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-11-22 00:21:23,013 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-11-22 00:21:23,014 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_max_tgts_luns [2022-11-22 00:21:23,014 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_max_tgts_luns [2022-11-22 00:21:23,014 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_slave_configure [2022-11-22 00:21:23,014 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_slave_configure [2022-11-22 00:21:23,014 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be32 [2022-11-22 00:21:23,014 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be32 [2022-11-22 00:21:23,014 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bidi_cmnd [2022-11-22 00:21:23,014 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bidi_cmnd [2022-11-22 00:21:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-11-22 00:21:23,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-11-22 00:21:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-22 00:21:23,015 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-22 00:21:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_stop [2022-11-22 00:21:23,015 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_stop [2022-11-22 00:21:23,015 INFO L130 BoogieDeclarations]: Found specification of procedure do_device_access [2022-11-22 00:21:23,015 INFO L138 BoogieDeclarations]: Found implementation of procedure do_device_access [2022-11-22 00:21:23,016 INFO L130 BoogieDeclarations]: Found specification of procedure virtual_gb_show [2022-11-22 00:21:23,016 INFO L138 BoogieDeclarations]: Found implementation of procedure virtual_gb_show [2022-11-22 00:21:23,016 INFO L130 BoogieDeclarations]: Found specification of procedure vpd_use_hostno_show [2022-11-22 00:21:23,016 INFO L138 BoogieDeclarations]: Found implementation of procedure vpd_use_hostno_show [2022-11-22 00:21:23,016 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_target_reset [2022-11-22 00:21:23,016 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_target_reset [2022-11-22 00:21:23,016 INFO L130 BoogieDeclarations]: Found specification of procedure dix_show [2022-11-22 00:21:23,016 INFO L138 BoogieDeclarations]: Found implementation of procedure dix_show [2022-11-22 00:21:23,017 INFO L130 BoogieDeclarations]: Found specification of procedure every_nth_show [2022-11-22 00:21:23,017 INFO L138 BoogieDeclarations]: Found implementation of procedure every_nth_show [2022-11-22 00:21:23,017 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2022-11-22 00:21:23,017 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2022-11-22 00:21:23,017 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_in [2022-11-22 00:21:23,017 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_in [2022-11-22 00:21:23,017 INFO L130 BoogieDeclarations]: Found specification of procedure clear_luns_changed_on_target [2022-11-22 00:21:23,017 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_luns_changed_on_target [2022-11-22 00:21:23,017 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_prot_sg_count [2022-11-22 00:21:23,018 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_prot_sg_count [2022-11-22 00:21:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure ato_show [2022-11-22 00:21:23,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ato_show [2022-11-22 00:21:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure mk_sense_buffer [2022-11-22 00:21:23,018 INFO L138 BoogieDeclarations]: Found implementation of procedure mk_sense_buffer [2022-11-22 00:21:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure resp_sas_sha_m_spg [2022-11-22 00:21:23,018 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_sas_sha_m_spg [2022-11-22 00:21:23,018 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 00:21:23,019 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 00:21:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure add_host_show [2022-11-22 00:21:23,019 INFO L138 BoogieDeclarations]: Found implementation of procedure add_host_show [2022-11-22 00:21:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_add_adapter [2022-11-22 00:21:23,019 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_add_adapter [2022-11-22 00:21:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sg_copy_to_buffer [2022-11-22 00:21:23,019 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sg_copy_to_buffer [2022-11-22 00:21:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-22 00:21:23,020 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-22 00:21:23,020 INFO L130 BoogieDeclarations]: Found specification of procedure dif_store [2022-11-22 00:21:23,020 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_store [2022-11-22 00:21:23,020 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-22 00:21:23,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-22 00:21:23,020 INFO L130 BoogieDeclarations]: Found specification of procedure mk_sense_invalid_opcode [2022-11-22 00:21:23,020 INFO L138 BoogieDeclarations]: Found implementation of procedure mk_sense_invalid_opcode [2022-11-22 00:21:23,020 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 00:21:23,020 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 00:21:23,021 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_buffer [2022-11-22 00:21:23,021 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_buffer [2022-11-22 00:21:23,021 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_set_resid [2022-11-22 00:21:23,021 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_set_resid [2022-11-22 00:21:23,021 INFO L130 BoogieDeclarations]: Found specification of procedure shost_priv [2022-11-22 00:21:23,021 INFO L138 BoogieDeclarations]: Found implementation of procedure shost_priv [2022-11-22 00:21:23,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:21:23,021 INFO L130 BoogieDeclarations]: Found specification of procedure delay_show [2022-11-22 00:21:23,022 INFO L138 BoogieDeclarations]: Found implementation of procedure delay_show [2022-11-22 00:21:23,022 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-22 00:21:23,022 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-22 00:21:23,022 INFO L130 BoogieDeclarations]: Found specification of procedure get_sdebug_capacity [2022-11-22 00:21:23,022 INFO L138 BoogieDeclarations]: Found implementation of procedure get_sdebug_capacity [2022-11-22 00:21:23,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:21:23,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:21:23,022 INFO L130 BoogieDeclarations]: Found specification of procedure resp_ctrl_m_pg [2022-11-22 00:21:23,023 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_ctrl_m_pg [2022-11-22 00:21:23,023 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-22 00:21:23,023 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-22 00:21:24,604 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:21:24,616 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:21:25,795 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 00:22:16,260 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:22:20,151 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:22:20,152 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-22 00:22:20,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:22:20 BoogieIcfgContainer [2022-11-22 00:22:20,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:22:20,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:22:20,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:22:20,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:22:20,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:21:15" (1/3) ... [2022-11-22 00:22:20,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1020195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:22:20, skipping insertion in model container [2022-11-22 00:22:20,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:21:21" (2/3) ... [2022-11-22 00:22:20,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1020195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:22:20, skipping insertion in model container [2022-11-22 00:22:20,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:22:20" (3/3) ... [2022-11-22 00:22:20,170 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2022-11-22 00:22:20,195 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:22:20,195 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 00:22:20,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:22:20,358 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@559b3a65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:22:20,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 00:22:20,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 2826 states, 1840 states have (on average 1.4271739130434782) internal successors, (2626), 1927 states have internal predecessors, (2626), 829 states have call successors, (829), 156 states have call predecessors, (829), 155 states have return successors, (798), 786 states have call predecessors, (798), 798 states have call successors, (798) [2022-11-22 00:22:20,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2022-11-22 00:22:20,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:20,442 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:22:20,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:22:20,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:20,449 INFO L85 PathProgramCache]: Analyzing trace with hash -460469942, now seen corresponding path program 1 times [2022-11-22 00:22:20,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:20,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217509796] [2022-11-22 00:22:20,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:20,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:23,886 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2022-11-22 00:22:23,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:22:23,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217509796] [2022-11-22 00:22:23,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217509796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:22:23,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:22:23,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:22:23,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649679969] [2022-11-22 00:22:23,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:22:23,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:22:23,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:22:23,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:22:23,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:22:23,972 INFO L87 Difference]: Start difference. First operand has 2826 states, 1840 states have (on average 1.4271739130434782) internal successors, (2626), 1927 states have internal predecessors, (2626), 829 states have call successors, (829), 156 states have call predecessors, (829), 155 states have return successors, (798), 786 states have call predecessors, (798), 798 states have call successors, (798) Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2022-11-22 00:22:26,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:22:30,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:22:32,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:22:34,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:22:37,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:22:41,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:22:49,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:22:49,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:22:49,736 INFO L93 Difference]: Finished difference Result 8081 states and 12245 transitions. [2022-11-22 00:22:49,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:22:49,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 907 [2022-11-22 00:22:49,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:22:49,808 INFO L225 Difference]: With dead ends: 8081 [2022-11-22 00:22:49,808 INFO L226 Difference]: Without dead ends: 5295 [2022-11-22 00:22:49,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:22:49,836 INFO L413 NwaCegarLoop]: 4585 mSDtfsCounter, 3870 mSDsluCounter, 3870 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3876 SdHoareTripleChecker+Valid, 8455 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:22:49,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3876 Valid, 8455 Invalid, 749 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 742 Invalid, 6 Unknown, 0 Unchecked, 25.2s Time] [2022-11-22 00:22:49,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5295 states. [2022-11-22 00:22:50,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5295 to 5286. [2022-11-22 00:22:50,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5286 states, 3511 states have (on average 1.4186841355739106) internal successors, (4981), 3619 states have internal predecessors, (4981), 1469 states have call successors, (1469), 306 states have call predecessors, (1469), 305 states have return successors, (1469), 1440 states have call predecessors, (1469), 1467 states have call successors, (1469) [2022-11-22 00:22:50,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 7919 transitions. [2022-11-22 00:22:50,336 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 7919 transitions. Word has length 907 [2022-11-22 00:22:50,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:22:50,347 INFO L495 AbstractCegarLoop]: Abstraction has 5286 states and 7919 transitions. [2022-11-22 00:22:50,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2022-11-22 00:22:50,348 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 7919 transitions. [2022-11-22 00:22:50,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2022-11-22 00:22:50,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:50,399 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:22:50,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:22:50,400 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:22:50,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:50,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1153376826, now seen corresponding path program 1 times [2022-11-22 00:22:50,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:50,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203049528] [2022-11-22 00:22:50,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:50,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2022-11-22 00:22:52,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:22:52,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203049528] [2022-11-22 00:22:52,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203049528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:22:52,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:22:52,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:22:52,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885398489] [2022-11-22 00:22:52,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:22:52,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:22:52,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:22:52,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:22:52,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:22:52,833 INFO L87 Difference]: Start difference. First operand 5286 states and 7919 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2022-11-22 00:22:55,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:22:59,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:01,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:03,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:07,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:09,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:23:12,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:14,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:18,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:19,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:23:19,078 INFO L93 Difference]: Finished difference Result 15418 states and 23102 transitions. [2022-11-22 00:23:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:23:19,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 914 [2022-11-22 00:23:19,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:23:19,163 INFO L225 Difference]: With dead ends: 15418 [2022-11-22 00:23:19,163 INFO L226 Difference]: Without dead ends: 10293 [2022-11-22 00:23:19,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:23:19,197 INFO L413 NwaCegarLoop]: 4517 mSDtfsCounter, 3735 mSDsluCounter, 3761 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3741 SdHoareTripleChecker+Valid, 8278 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:23:19,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3741 Valid, 8278 Invalid, 745 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 737 Invalid, 7 Unknown, 0 Unchecked, 25.7s Time] [2022-11-22 00:23:19,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10293 states. [2022-11-22 00:23:19,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10293 to 10283. [2022-11-22 00:23:19,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10283 states, 6860 states have (on average 1.4246355685131196) internal successors, (9773), 7076 states have internal predecessors, (9773), 2817 states have call successors, (2817), 606 states have call predecessors, (2817), 605 states have return successors, (2821), 2758 states have call predecessors, (2821), 2815 states have call successors, (2821) [2022-11-22 00:23:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10283 states to 10283 states and 15411 transitions. [2022-11-22 00:23:19,947 INFO L78 Accepts]: Start accepts. Automaton has 10283 states and 15411 transitions. Word has length 914 [2022-11-22 00:23:19,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:23:19,951 INFO L495 AbstractCegarLoop]: Abstraction has 10283 states and 15411 transitions. [2022-11-22 00:23:19,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2022-11-22 00:23:19,953 INFO L276 IsEmpty]: Start isEmpty. Operand 10283 states and 15411 transitions. [2022-11-22 00:23:19,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 919 [2022-11-22 00:23:19,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:23:19,971 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:23:19,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:23:19,972 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:23:19,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:23:19,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1027126344, now seen corresponding path program 1 times [2022-11-22 00:23:19,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:23:19,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948117083] [2022-11-22 00:23:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:23:19,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:23:20,663 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:23:20,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241137681] [2022-11-22 00:23:20,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:23:20,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:23:20,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:23:20,671 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:23:20,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:23:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:23:25,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 14442 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:23:25,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:23:31,298 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-22 00:23:31,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:23:31,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:23:31,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948117083] [2022-11-22 00:23:31,299 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:23:31,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241137681] [2022-11-22 00:23:31,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241137681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:23:31,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:23:31,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:23:31,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460839151] [2022-11-22 00:23:31,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:23:31,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:23:31,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:23:31,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:23:31,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:23:31,304 INFO L87 Difference]: Start difference. First operand 10283 states and 15411 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2022-11-22 00:23:32,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:36,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:38,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:40,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:43,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:47,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:50,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:23:52,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:55,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:23:56,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:23:56,956 INFO L93 Difference]: Finished difference Result 19248 states and 28940 transitions. [2022-11-22 00:23:56,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:23:56,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 918 [2022-11-22 00:23:56,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:23:57,113 INFO L225 Difference]: With dead ends: 19248 [2022-11-22 00:23:57,114 INFO L226 Difference]: Without dead ends: 19244 [2022-11-22 00:23:57,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 917 GetRequests, 916 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:23:57,134 INFO L413 NwaCegarLoop]: 4531 mSDtfsCounter, 3618 mSDsluCounter, 3341 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3620 SdHoareTripleChecker+Valid, 7872 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2022-11-22 00:23:57,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3620 Valid, 7872 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 712 Invalid, 6 Unknown, 0 Unchecked, 24.9s Time] [2022-11-22 00:23:57,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19244 states. [2022-11-22 00:23:58,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19244 to 19099. [2022-11-22 00:23:58,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19099 states, 12887 states have (on average 1.4298129898347172) internal successors, (18426), 13260 states have internal predecessors, (18426), 5081 states have call successors, (5081), 1135 states have call predecessors, (5081), 1130 states have return successors, (5173), 4961 states have call predecessors, (5173), 5079 states have call successors, (5173) [2022-11-22 00:23:58,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19099 states to 19099 states and 28680 transitions. [2022-11-22 00:23:58,202 INFO L78 Accepts]: Start accepts. Automaton has 19099 states and 28680 transitions. Word has length 918 [2022-11-22 00:23:58,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:23:58,204 INFO L495 AbstractCegarLoop]: Abstraction has 19099 states and 28680 transitions. [2022-11-22 00:23:58,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2022-11-22 00:23:58,204 INFO L276 IsEmpty]: Start isEmpty. Operand 19099 states and 28680 transitions. [2022-11-22 00:23:58,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 937 [2022-11-22 00:23:58,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:23:58,223 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:23:58,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 00:23:58,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:23:58,451 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:23:58,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:23:58,452 INFO L85 PathProgramCache]: Analyzing trace with hash -630000355, now seen corresponding path program 1 times [2022-11-22 00:23:58,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:23:58,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932775494] [2022-11-22 00:23:58,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:23:58,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:23:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:24:00,616 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2022-11-22 00:24:00,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:24:00,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932775494] [2022-11-22 00:24:00,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932775494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:24:00,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:24:00,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:24:00,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649145111] [2022-11-22 00:24:00,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:24:00,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:24:00,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:24:00,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:24:00,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:24:00,621 INFO L87 Difference]: Start difference. First operand 19099 states and 28680 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-11-22 00:24:02,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:08,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:10,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:12,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 00:24:14,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:19,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:21,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:23,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:24,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:24:24,680 INFO L93 Difference]: Finished difference Result 43519 states and 65070 transitions. [2022-11-22 00:24:24,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:24:24,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) Word has length 936 [2022-11-22 00:24:24,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:24:24,826 INFO L225 Difference]: With dead ends: 43519 [2022-11-22 00:24:24,826 INFO L226 Difference]: Without dead ends: 24581 [2022-11-22 00:24:24,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:24:24,933 INFO L413 NwaCegarLoop]: 4033 mSDtfsCounter, 1168 mSDsluCounter, 3674 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 7707 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:24:24,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 7707 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 827 Invalid, 7 Unknown, 0 Unchecked, 23.3s Time] [2022-11-22 00:24:24,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24581 states. [2022-11-22 00:24:26,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24581 to 24577. [2022-11-22 00:24:26,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24577 states, 17017 states have (on average 1.4462008579655639) internal successors, (24610), 17516 states have internal predecessors, (24610), 5955 states have call successors, (5955), 1613 states have call predecessors, (5955), 1604 states have return successors, (6053), 5795 states have call predecessors, (6053), 5953 states have call successors, (6053) [2022-11-22 00:24:26,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24577 states to 24577 states and 36618 transitions. [2022-11-22 00:24:26,329 INFO L78 Accepts]: Start accepts. Automaton has 24577 states and 36618 transitions. Word has length 936 [2022-11-22 00:24:26,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:24:26,330 INFO L495 AbstractCegarLoop]: Abstraction has 24577 states and 36618 transitions. [2022-11-22 00:24:26,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-11-22 00:24:26,331 INFO L276 IsEmpty]: Start isEmpty. Operand 24577 states and 36618 transitions. [2022-11-22 00:24:26,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 944 [2022-11-22 00:24:26,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:24:26,347 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 21, 21, 20, 20, 20, 20, 3, 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] [2022-11-22 00:24:26,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:24:26,348 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:24:26,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:24:26,349 INFO L85 PathProgramCache]: Analyzing trace with hash -922942126, now seen corresponding path program 1 times [2022-11-22 00:24:26,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:24:26,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82718543] [2022-11-22 00:24:26,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:24:26,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:24:27,003 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:24:27,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005187406] [2022-11-22 00:24:27,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:24:27,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:24:27,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:24:27,006 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:24:27,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:24:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:24:31,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 14747 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:24:31,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:24:37,662 INFO L134 CoverageAnalysis]: Checked inductivity of 17929 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17928 trivial. 0 not checked. [2022-11-22 00:24:37,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:24:37,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:24:37,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82718543] [2022-11-22 00:24:37,663 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:24:37,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005187406] [2022-11-22 00:24:37,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005187406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:24:37,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:24:37,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:24:37,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788631252] [2022-11-22 00:24:37,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:24:37,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:24:37,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:24:37,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:24:37,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:24:37,668 INFO L87 Difference]: Start difference. First operand 24577 states and 36618 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (88), 1 states have call predecessors, (88), 1 states have call successors, (88) [2022-11-22 00:24:39,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:43,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:45,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:47,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:50,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:53,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:55,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:24:56,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:24:56,038 INFO L93 Difference]: Finished difference Result 48988 states and 72974 transitions. [2022-11-22 00:24:56,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:24:56,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (88), 1 states have call predecessors, (88), 1 states have call successors, (88) Word has length 943 [2022-11-22 00:24:56,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:24:56,173 INFO L225 Difference]: With dead ends: 48988 [2022-11-22 00:24:56,173 INFO L226 Difference]: Without dead ends: 24572 [2022-11-22 00:24:56,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 942 GetRequests, 941 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:24:56,269 INFO L413 NwaCegarLoop]: 3775 mSDtfsCounter, 3775 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3781 SdHoareTripleChecker+Valid, 3848 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:24:56,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3781 Valid, 3848 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 375 Invalid, 6 Unknown, 0 Unchecked, 17.6s Time] [2022-11-22 00:24:56,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24572 states. [2022-11-22 00:24:57,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24572 to 24572. [2022-11-22 00:24:57,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24572 states, 16997 states have (on average 1.4451373771842089) internal successors, (24563), 17497 states have internal predecessors, (24563), 5961 states have call successors, (5961), 1621 states have call predecessors, (5961), 1613 states have return successors, (6063), 5801 states have call predecessors, (6063), 5959 states have call successors, (6063) [2022-11-22 00:24:58,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24572 states to 24572 states and 36587 transitions. [2022-11-22 00:24:58,030 INFO L78 Accepts]: Start accepts. Automaton has 24572 states and 36587 transitions. Word has length 943 [2022-11-22 00:24:58,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:24:58,031 INFO L495 AbstractCegarLoop]: Abstraction has 24572 states and 36587 transitions. [2022-11-22 00:24:58,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (88), 1 states have call predecessors, (88), 1 states have call successors, (88) [2022-11-22 00:24:58,032 INFO L276 IsEmpty]: Start isEmpty. Operand 24572 states and 36587 transitions. [2022-11-22 00:24:58,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2022-11-22 00:24:58,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:24:58,049 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 59, 59, 59, 59, 59, 59, 20, 20, 20, 20, 20, 20, 3, 3, 3, 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] [2022-11-22 00:24:58,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 00:24:58,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:24:58,272 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:24:58,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:24:58,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1827567562, now seen corresponding path program 1 times [2022-11-22 00:24:58,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:24:58,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543041182] [2022-11-22 00:24:58,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:24:58,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:24:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:25:00,566 INFO L134 CoverageAnalysis]: Checked inductivity of 18459 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18452 trivial. 0 not checked. [2022-11-22 00:25:00,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:25:00,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543041182] [2022-11-22 00:25:00,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543041182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:25:00,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:25:00,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:25:00,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756003245] [2022-11-22 00:25:00,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:25:00,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:25:00,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:25:00,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:25:00,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:25:00,571 INFO L87 Difference]: Start difference. First operand 24572 states and 36587 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-22 00:25:02,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:09,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:11,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:14,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:20,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:24,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:25,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:27,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:25:27,249 INFO L93 Difference]: Finished difference Result 72608 states and 108139 transitions. [2022-11-22 00:25:27,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:25:27,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 983 [2022-11-22 00:25:27,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:25:27,512 INFO L225 Difference]: With dead ends: 72608 [2022-11-22 00:25:27,512 INFO L226 Difference]: Without dead ends: 48197 [2022-11-22 00:25:27,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:25:27,611 INFO L413 NwaCegarLoop]: 6344 mSDtfsCounter, 3745 mSDsluCounter, 3751 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3751 SdHoareTripleChecker+Valid, 10095 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:25:27,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3751 Valid, 10095 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 959 Invalid, 6 Unknown, 0 Unchecked, 25.4s Time] [2022-11-22 00:25:27,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48197 states. [2022-11-22 00:25:30,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48197 to 48184. [2022-11-22 00:25:30,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48184 states, 33365 states have (on average 1.446156151655927) internal successors, (48251), 34321 states have internal predecessors, (48251), 11653 states have call successors, (11653), 3181 states have call predecessors, (11653), 3165 states have return successors, (11859), 11345 states have call predecessors, (11859), 11651 states have call successors, (11859) [2022-11-22 00:25:30,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48184 states to 48184 states and 71763 transitions. [2022-11-22 00:25:30,648 INFO L78 Accepts]: Start accepts. Automaton has 48184 states and 71763 transitions. Word has length 983 [2022-11-22 00:25:30,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:25:30,649 INFO L495 AbstractCegarLoop]: Abstraction has 48184 states and 71763 transitions. [2022-11-22 00:25:30,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-22 00:25:30,650 INFO L276 IsEmpty]: Start isEmpty. Operand 48184 states and 71763 transitions. [2022-11-22 00:25:30,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1231 [2022-11-22 00:25:30,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:25:30,703 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-22 00:25:30,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:25:30,703 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:25:30,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:25:30,704 INFO L85 PathProgramCache]: Analyzing trace with hash -317254377, now seen corresponding path program 1 times [2022-11-22 00:25:30,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:25:30,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738550722] [2022-11-22 00:25:30,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:25:30,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:25:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:25:34,247 INFO L134 CoverageAnalysis]: Checked inductivity of 30633 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30615 trivial. 0 not checked. [2022-11-22 00:25:34,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:25:34,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738550722] [2022-11-22 00:25:34,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738550722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:25:34,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:25:34,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:25:34,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31182960] [2022-11-22 00:25:34,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:25:34,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:25:34,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:25:34,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:25:34,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:25:34,252 INFO L87 Difference]: Start difference. First operand 48184 states and 71763 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2022-11-22 00:25:36,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:44,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:46,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:49,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:54,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:57,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:25:59,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:01,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:03,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:03,124 INFO L93 Difference]: Finished difference Result 96303 states and 143415 transitions. [2022-11-22 00:26:03,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:26:03,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) Word has length 1230 [2022-11-22 00:26:03,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:03,436 INFO L225 Difference]: With dead ends: 96303 [2022-11-22 00:26:03,436 INFO L226 Difference]: Without dead ends: 48184 [2022-11-22 00:26:03,593 INFO L412 NwaCegarLoop]: 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 [2022-11-22 00:26:03,595 INFO L413 NwaCegarLoop]: 3762 mSDtfsCounter, 3 mSDsluCounter, 7513 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 7 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11275 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:03,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11275 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1083 Invalid, 7 Unknown, 0 Unchecked, 26.8s Time] [2022-11-22 00:26:03,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48184 states. [2022-11-22 00:26:05,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48184 to 48184. [2022-11-22 00:26:05,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48184 states, 33365 states have (on average 1.439442529596883) internal successors, (48027), 34321 states have internal predecessors, (48027), 11653 states have call successors, (11653), 3181 states have call predecessors, (11653), 3165 states have return successors, (11859), 11345 states have call predecessors, (11859), 11651 states have call successors, (11859) [2022-11-22 00:26:06,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48184 states to 48184 states and 71539 transitions. [2022-11-22 00:26:06,016 INFO L78 Accepts]: Start accepts. Automaton has 48184 states and 71539 transitions. Word has length 1230 [2022-11-22 00:26:06,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:06,017 INFO L495 AbstractCegarLoop]: Abstraction has 48184 states and 71539 transitions. [2022-11-22 00:26:06,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2022-11-22 00:26:06,018 INFO L276 IsEmpty]: Start isEmpty. Operand 48184 states and 71539 transitions. [2022-11-22 00:26:06,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1252 [2022-11-22 00:26:06,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:06,080 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-22 00:26:06,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:26:06,080 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:26:06,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:06,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1104966102, now seen corresponding path program 1 times [2022-11-22 00:26:06,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:06,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863060418] [2022-11-22 00:26:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:06,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:07,097 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:26:07,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1177217877] [2022-11-22 00:26:07,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:07,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:26:07,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:26:07,103 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:26:07,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 00:26:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:12,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 16492 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:26:12,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:26:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 30645 backedges. 794 proven. 0 refuted. 0 times theorem prover too weak. 29851 trivial. 0 not checked. [2022-11-22 00:26:12,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:26:12,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:12,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863060418] [2022-11-22 00:26:12,718 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:26:12,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177217877] [2022-11-22 00:26:12,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177217877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:12,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:12,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:26:12,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110230994] [2022-11-22 00:26:12,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:12,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:26:12,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:12,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:26:12,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:26:12,722 INFO L87 Difference]: Start difference. First operand 48184 states and 71539 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 3 states have call successors, (121), 3 states have call predecessors, (121), 3 states have return successors, (115), 3 states have call predecessors, (115), 3 states have call successors, (115) [2022-11-22 00:26:14,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:21,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:23,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:26,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:32,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:35,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:37,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:38,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:26:38,314 INFO L93 Difference]: Finished difference Result 132330 states and 196973 transitions. [2022-11-22 00:26:38,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:26:38,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 3 states have call successors, (121), 3 states have call predecessors, (121), 3 states have return successors, (115), 3 states have call predecessors, (115), 3 states have call successors, (115) Word has length 1251 [2022-11-22 00:26:38,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:26:38,751 INFO L225 Difference]: With dead ends: 132330 [2022-11-22 00:26:38,751 INFO L226 Difference]: Without dead ends: 84307 [2022-11-22 00:26:39,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1250 GetRequests, 1249 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:26:39,036 INFO L413 NwaCegarLoop]: 4401 mSDtfsCounter, 3674 mSDsluCounter, 3622 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 46 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3680 SdHoareTripleChecker+Valid, 8023 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:26:39,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3680 Valid, 8023 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 820 Invalid, 7 Unknown, 0 Unchecked, 22.4s Time] [2022-11-22 00:26:39,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84307 states. [2022-11-22 00:26:42,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84307 to 84282. [2022-11-22 00:26:42,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84282 states, 57947 states have (on average 1.434224377448358) internal successors, (83109), 59605 states have internal predecessors, (83109), 20965 states have call successors, (20965), 5393 states have call predecessors, (20965), 5369 states have return successors, (21351), 20407 states have call predecessors, (21351), 20963 states have call successors, (21351) [2022-11-22 00:26:42,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84282 states to 84282 states and 125425 transitions. [2022-11-22 00:26:42,913 INFO L78 Accepts]: Start accepts. Automaton has 84282 states and 125425 transitions. Word has length 1251 [2022-11-22 00:26:42,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:26:42,917 INFO L495 AbstractCegarLoop]: Abstraction has 84282 states and 125425 transitions. [2022-11-22 00:26:42,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 3 states have call successors, (121), 3 states have call predecessors, (121), 3 states have return successors, (115), 3 states have call predecessors, (115), 3 states have call successors, (115) [2022-11-22 00:26:42,918 INFO L276 IsEmpty]: Start isEmpty. Operand 84282 states and 125425 transitions. [2022-11-22 00:26:42,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1251 [2022-11-22 00:26:42,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:26:42,968 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-22 00:26:43,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 00:26:43,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:26:43,187 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:26:43,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:26:43,187 INFO L85 PathProgramCache]: Analyzing trace with hash 537129633, now seen corresponding path program 1 times [2022-11-22 00:26:43,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:26:43,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79359317] [2022-11-22 00:26:43,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:43,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:26:44,145 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:26:44,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [23194096] [2022-11-22 00:26:44,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:26:44,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:26:44,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:26:44,147 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:26:44,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 00:26:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:26:48,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 16491 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:26:48,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:26:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 30645 backedges. 11050 proven. 0 refuted. 0 times theorem prover too weak. 19595 trivial. 0 not checked. [2022-11-22 00:26:48,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:26:48,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:26:48,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79359317] [2022-11-22 00:26:48,982 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:26:48,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23194096] [2022-11-22 00:26:48,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23194096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:26:48,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:26:48,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:26:48,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982007308] [2022-11-22 00:26:48,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:26:48,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:26:48,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:26:48,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:26:48,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:26:48,986 INFO L87 Difference]: Start difference. First operand 84282 states and 125425 transitions. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-11-22 00:26:50,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:52,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:26:54,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:02,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:04,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:06,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:13,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:16,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:18,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:19,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:27:19,693 INFO L93 Difference]: Finished difference Result 168475 states and 250707 transitions. [2022-11-22 00:27:19,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:27:19,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) Word has length 1250 [2022-11-22 00:27:19,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:27:20,235 INFO L225 Difference]: With dead ends: 168475 [2022-11-22 00:27:20,235 INFO L226 Difference]: Without dead ends: 84282 [2022-11-22 00:27:20,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1250 GetRequests, 1247 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:27:20,521 INFO L413 NwaCegarLoop]: 3755 mSDtfsCounter, 3 mSDsluCounter, 7506 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11261 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:27:20,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11261 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1085 Invalid, 6 Unknown, 0 Unchecked, 27.2s Time] [2022-11-22 00:27:20,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84282 states. [2022-11-22 00:27:23,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84282 to 84282. [2022-11-22 00:27:23,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84282 states, 57947 states have (on average 1.4338102058777848) internal successors, (83085), 59605 states have internal predecessors, (83085), 20965 states have call successors, (20965), 5393 states have call predecessors, (20965), 5369 states have return successors, (21351), 20407 states have call predecessors, (21351), 20963 states have call successors, (21351) [2022-11-22 00:27:24,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84282 states to 84282 states and 125401 transitions. [2022-11-22 00:27:24,461 INFO L78 Accepts]: Start accepts. Automaton has 84282 states and 125401 transitions. Word has length 1250 [2022-11-22 00:27:24,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:27:24,462 INFO L495 AbstractCegarLoop]: Abstraction has 84282 states and 125401 transitions. [2022-11-22 00:27:24,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-11-22 00:27:24,463 INFO L276 IsEmpty]: Start isEmpty. Operand 84282 states and 125401 transitions. [2022-11-22 00:27:24,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1258 [2022-11-22 00:27:24,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:27:24,502 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-22 00:27:24,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-22 00:27:24,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:27:24,723 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:27:24,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:27:24,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2106993807, now seen corresponding path program 1 times [2022-11-22 00:27:24,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:27:24,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947884479] [2022-11-22 00:27:24,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:27:24,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:27:25,368 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:27:25,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745996150] [2022-11-22 00:27:25,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:27:25,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:27:25,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:27:25,371 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:27:25,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 00:27:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:27:30,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 16510 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:27:30,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:27:37,355 INFO L134 CoverageAnalysis]: Checked inductivity of 30645 backedges. 11038 proven. 0 refuted. 0 times theorem prover too weak. 19607 trivial. 0 not checked. [2022-11-22 00:27:37,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:27:37,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:27:37,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947884479] [2022-11-22 00:27:37,357 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 00:27:37,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745996150] [2022-11-22 00:27:37,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745996150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:27:37,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:27:37,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:27:37,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612928578] [2022-11-22 00:27:37,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:27:37,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:27:37,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:27:37,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:27:37,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:27:37,363 INFO L87 Difference]: Start difference. First operand 84282 states and 125401 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 2 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2022-11-22 00:27:39,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:47,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:49,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:52,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:27:54,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:28:01,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:28:05,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:28:06,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 00:28:08,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:08,676 INFO L93 Difference]: Finished difference Result 250443 states and 373022 transitions. [2022-11-22 00:28:08,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:08,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 2 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) Word has length 1257 [2022-11-22 00:28:08,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:09,935 INFO L225 Difference]: With dead ends: 250443 [2022-11-22 00:28:09,936 INFO L226 Difference]: Without dead ends: 166322 [2022-11-22 00:28:10,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1256 GetRequests, 1255 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:28:10,241 INFO L413 NwaCegarLoop]: 4486 mSDtfsCounter, 3795 mSDsluCounter, 3503 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3799 SdHoareTripleChecker+Valid, 7989 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:10,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3799 Valid, 7989 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 731 Invalid, 6 Unknown, 0 Unchecked, 25.1s Time] [2022-11-22 00:28:10,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166322 states. [2022-11-22 00:28:18,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166322 to 166279. [2022-11-22 00:28:18,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166279 states, 114594 states have (on average 1.4353805609368728) internal successors, (164486), 117729 states have internal predecessors, (164486), 41115 states have call successors, (41115), 10617 states have call predecessors, (41115), 10569 states have return successors, (41865), 40080 states have call predecessors, (41865), 41113 states have call successors, (41865) [2022-11-22 00:28:19,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166279 states to 166279 states and 247466 transitions. [2022-11-22 00:28:19,353 INFO L78 Accepts]: Start accepts. Automaton has 166279 states and 247466 transitions. Word has length 1257 [2022-11-22 00:28:19,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:19,354 INFO L495 AbstractCegarLoop]: Abstraction has 166279 states and 247466 transitions. [2022-11-22 00:28:19,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 2 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2022-11-22 00:28:19,355 INFO L276 IsEmpty]: Start isEmpty. Operand 166279 states and 247466 transitions. [2022-11-22 00:28:19,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1275 [2022-11-22 00:28:19,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:19,411 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 21, 21, 20, 20, 20, 20, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-22 00:28:19,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 00:28:19,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:19,628 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:28:19,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:19,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1832574485, now seen corresponding path program 1 times [2022-11-22 00:28:19,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:19,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461656736] [2022-11-22 00:28:19,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:19,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:20,260 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 00:28:20,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740024523] [2022-11-22 00:28:20,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:20,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:20,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:20,263 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:20,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c7b481-e46b-4ce2-9ebd-fbf59dd2d893/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process