./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--fcoe--fcoe.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI --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 b09307eff68471b13f9f4af8ca37265160c175233f57a4afa3e4fdd6d6503a6b --- 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-5e519f3 [2022-11-03 01:39:23,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:39:23,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:39:23,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:39:23,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:39:23,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:39:23,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:39:23,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:39:23,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:39:23,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:39:23,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:39:23,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:39:23,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:39:23,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:39:23,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:39:23,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:39:23,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:39:23,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:39:23,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:39:23,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:39:23,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:39:23,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:39:23,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:39:23,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:39:23,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:39:23,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:39:23,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:39:23,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:39:23,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:39:23,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:39:23,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:39:23,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:39:23,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:39:23,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:39:23,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:39:23,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:39:23,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:39:23,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:39:23,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:39:23,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:39:23,616 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:39:23,618 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:39:23,665 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:39:23,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:39:23,668 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:39:23,668 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:39:23,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:39:23,669 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:39:23,670 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:39:23,670 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:39:23,670 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:39:23,670 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:39:23,672 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:39:23,672 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:39:23,672 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:39:23,673 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:39:23,673 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:39:23,673 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:39:23,673 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:39:23,674 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:39:23,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:39:23,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:39:23,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:39:23,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:39:23,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:39:23,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:39:23,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:39:23,676 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:39:23,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:39:23,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:39:23,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:39:23,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:39:23,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:39:23,679 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:39:23,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:39:23,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:39:23,680 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:39:23,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:39:23,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:39:23,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:39:23,681 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_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b09307eff68471b13f9f4af8ca37265160c175233f57a4afa3e4fdd6d6503a6b [2022-11-03 01:39:23,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:39:24,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:39:24,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:39:24,013 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:39:24,014 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:39:24,016 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i [2022-11-03 01:39:24,099 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI/data/c96f613a2/55a286f6a5324209a4e76bbe2670302f/FLAG7881cafcf [2022-11-03 01:39:25,173 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:39:25,176 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i [2022-11-03 01:39:25,239 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI/data/c96f613a2/55a286f6a5324209a4e76bbe2670302f/FLAG7881cafcf [2022-11-03 01:39:25,503 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI/data/c96f613a2/55a286f6a5324209a4e76bbe2670302f [2022-11-03 01:39:25,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:39:25,508 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:39:25,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:39:25,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:39:25,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:39:25,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:39:25" (1/1) ... [2022-11-03 01:39:25,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@301bd196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:25, skipping insertion in model container [2022-11-03 01:39:25,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:39:25" (1/1) ... [2022-11-03 01:39:25,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:39:25,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:39:29,021 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i[416808,416821] [2022-11-03 01:39:29,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:39:29,131 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:39:29,793 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i[416808,416821] [2022-11-03 01:39:29,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:39:30,012 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:39:30,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:30 WrapperNode [2022-11-03 01:39:30,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:39:30,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:39:30,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:39:30,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:39:30,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:30" (1/1) ... [2022-11-03 01:39:30,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:30" (1/1) ... [2022-11-03 01:39:30,356 INFO L138 Inliner]: procedures = 426, calls = 2211, calls flagged for inlining = 204, calls inlined = 184, statements flattened = 6226 [2022-11-03 01:39:30,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:39:30,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:39:30,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:39:30,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:39:30,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:30" (1/1) ... [2022-11-03 01:39:30,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:30" (1/1) ... [2022-11-03 01:39:30,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:30" (1/1) ... [2022-11-03 01:39:30,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:30" (1/1) ... [2022-11-03 01:39:30,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:30" (1/1) ... [2022-11-03 01:39:30,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:30" (1/1) ... [2022-11-03 01:39:30,706 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:30" (1/1) ... [2022-11-03 01:39:30,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:30" (1/1) ... [2022-11-03 01:39:30,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:39:30,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:39:30,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:39:30,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:39:30,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:30" (1/1) ... [2022-11-03 01:39:30,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:39:30,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:39:30,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:39:30,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:39:30,862 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_done [2022-11-03 01:39:30,862 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_done [2022-11-03 01:39:30,862 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_get_wwn [2022-11-03 01:39:30,863 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_get_wwn [2022-11-03 01:39:30,863 INFO L130 BoogieDeclarations]: Found specification of procedure fc_lport_bsg_request [2022-11-03 01:39:30,863 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_lport_bsg_request [2022-11-03 01:39:30,863 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-03 01:39:30,863 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_hostlist_del [2022-11-03 01:39:30,863 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_hostlist_del [2022-11-03 01:39:30,864 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-11-03 01:39:30,864 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-11-03 01:39:30,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 01:39:30,864 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 01:39:30,864 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-11-03 01:39:30,864 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-11-03 01:39:30,865 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-03 01:39:30,865 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-03 01:39:30,865 INFO L130 BoogieDeclarations]: Found specification of procedure fc_frame_header_get [2022-11-03 01:39:30,865 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_frame_header_get [2022-11-03 01:39:30,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 01:39:30,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 01:39:30,865 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:39:30,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:39:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_netdev [2022-11-03 01:39:30,866 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_netdev [2022-11-03 01:39:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_recv_flogi [2022-11-03 01:39:30,866 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_recv_flogi [2022-11-03 01:39:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure fc_vport_setlink [2022-11-03 01:39:30,867 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_vport_setlink [2022-11-03 01:39:30,867 INFO L130 BoogieDeclarations]: Found specification of procedure fc_eh_abort [2022-11-03 01:39:30,867 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_eh_abort [2022-11-03 01:39:30,867 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-03 01:39:30,867 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-03 01:39:30,867 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_dev_from_skb [2022-11-03 01:39:30,867 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_dev_from_skb [2022-11-03 01:39:30,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_4 [2022-11-03 01:39:30,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_4 [2022-11-03 01:39:30,868 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_percpu_thread_create [2022-11-03 01:39:30,868 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_percpu_thread_create [2022-11-03 01:39:30,868 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_device_priv [2022-11-03 01:39:30,868 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_device_priv [2022-11-03 01:39:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure __preempt_count_sub [2022-11-03 01:39:30,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __preempt_count_sub [2022-11-03 01:39:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_link_ok [2022-11-03 01:39:30,869 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_link_ok [2022-11-03 01:39:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_vport_destroy [2022-11-03 01:39:30,869 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_vport_destroy [2022-11-03 01:39:30,869 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_alloc [2022-11-03 01:39:30,870 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_alloc [2022-11-03 01:39:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure fc_get_host_port_state [2022-11-03 01:39:30,870 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_get_host_port_state [2022-11-03 01:39:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure fc_release_transport [2022-11-03 01:39:30,870 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_release_transport [2022-11-03 01:39:30,870 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_reset [2022-11-03 01:39:30,870 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_reset [2022-11-03 01:39:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-03 01:39:30,871 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-03 01:39:30,871 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 01:39:30,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 01:39:30,872 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_link_speed_update [2022-11-03 01:39:30,872 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_link_speed_update [2022-11-03 01:39:30,872 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_xmit [2022-11-03 01:39:30,872 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_xmit [2022-11-03 01:39:30,872 INFO L130 BoogieDeclarations]: Found specification of procedure fc_fabric_logoff [2022-11-03 01:39:30,872 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_fabric_logoff [2022-11-03 01:39:30,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:39:30,873 INFO L130 BoogieDeclarations]: Found specification of procedure fc_frame_payload_get [2022-11-03 01:39:30,873 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_frame_payload_get [2022-11-03 01:39:30,873 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 01:39:30,873 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 01:39:30,873 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_remove [2022-11-03 01:39:30,874 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_remove [2022-11-03 01:39:30,874 INFO L130 BoogieDeclarations]: Found specification of procedure fc_exch_mgr_alloc [2022-11-03 01:39:30,875 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_exch_mgr_alloc [2022-11-03 01:39:30,875 INFO L130 BoogieDeclarations]: Found specification of procedure is_fip_mode [2022-11-03 01:39:30,875 INFO L138 BoogieDeclarations]: Found implementation of procedure is_fip_mode [2022-11-03 01:39:30,875 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-03 01:39:30,875 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-03 01:39:30,875 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_check_wait_queue [2022-11-03 01:39:30,875 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_check_wait_queue [2022-11-03 01:39:30,876 INFO L130 BoogieDeclarations]: Found specification of procedure fc_fabric_login [2022-11-03 01:39:30,876 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_fabric_login [2022-11-03 01:39:30,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:39:30,877 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_maps_update_done [2022-11-03 01:39:30,877 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_maps_update_done [2022-11-03 01:39:30,877 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_target [2022-11-03 01:39:30,877 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_target [2022-11-03 01:39:30,877 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_rport_loss_tmo [2022-11-03 01:39:30,878 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_rport_loss_tmo [2022-11-03 01:39:30,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:39:30,879 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_setup [2022-11-03 01:39:30,879 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_setup [2022-11-03 01:39:30,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:39:30,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 01:39:30,880 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 01:39:30,880 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_wwn_from_mac [2022-11-03 01:39:30,880 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_wwn_from_mac [2022-11-03 01:39:30,880 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-03 01:39:30,881 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-03 01:39:30,881 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-03 01:39:30,881 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-03 01:39:30,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 01:39:30,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 01:39:30,882 INFO L130 BoogieDeclarations]: Found specification of procedure fc_attach_transport [2022-11-03 01:39:30,882 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_attach_transport [2022-11-03 01:39:30,882 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_hostlist_lookup_port [2022-11-03 01:39:30,882 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_hostlist_lookup_port [2022-11-03 01:39:30,882 INFO L130 BoogieDeclarations]: Found specification of procedure dcb_getapp [2022-11-03 01:39:30,882 INFO L138 BoogieDeclarations]: Found implementation of procedure dcb_getapp [2022-11-03 01:39:30,883 INFO L130 BoogieDeclarations]: Found specification of procedure fc_rport_terminate_io [2022-11-03 01:39:30,884 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_rport_terminate_io [2022-11-03 01:39:30,887 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-03 01:39:30,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-03 01:39:30,887 INFO L130 BoogieDeclarations]: Found specification of procedure _fcoe_create [2022-11-03 01:39:30,888 INFO L138 BoogieDeclarations]: Found implementation of procedure _fcoe_create [2022-11-03 01:39:30,888 INFO L130 BoogieDeclarations]: Found specification of procedure fc_exch_mgr_free [2022-11-03 01:39:30,888 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_exch_mgr_free [2022-11-03 01:39:30,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 01:39:30,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 01:39:30,890 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-11-03 01:39:30,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-11-03 01:39:30,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:39:30,897 INFO L130 BoogieDeclarations]: Found specification of procedure dcb_ieee_getapp_mask [2022-11-03 01:39:30,897 INFO L138 BoogieDeclarations]: Found implementation of procedure dcb_ieee_getapp_mask [2022-11-03 01:39:30,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:39:30,897 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_mfs [2022-11-03 01:39:30,897 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_mfs [2022-11-03 01:39:30,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:39:30,897 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 01:39:30,898 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-11-03 01:39:30,898 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-11-03 01:39:30,898 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 01:39:30,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 01:39:30,898 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_link_up [2022-11-03 01:39:30,898 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_link_up [2022-11-03 01:39:30,898 INFO L130 BoogieDeclarations]: Found specification of procedure lport_priv [2022-11-03 01:39:30,898 INFO L138 BoogieDeclarations]: Found implementation of procedure lport_priv [2022-11-03 01:39:30,899 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_netdev_features_change [2022-11-03 01:39:30,899 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_netdev_features_change [2022-11-03 01:39:30,899 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_disable [2022-11-03 01:39:30,899 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_disable [2022-11-03 01:39:30,899 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 01:39:30,899 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 01:39:30,899 INFO L130 BoogieDeclarations]: Found specification of procedure fc_vport_set_state [2022-11-03 01:39:30,900 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_vport_set_state [2022-11-03 01:39:30,900 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_clean_pending_queue [2022-11-03 01:39:30,900 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_clean_pending_queue [2022-11-03 01:39:30,900 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_net [2022-11-03 01:39:30,900 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_net [2022-11-03 01:39:30,900 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_enabled [2022-11-03 01:39:30,900 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_enabled [2022-11-03 01:39:30,900 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_link_down [2022-11-03 01:39:30,901 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_link_down [2022-11-03 01:39:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure shost_priv [2022-11-03 01:39:30,901 INFO L138 BoogieDeclarations]: Found implementation of procedure shost_priv [2022-11-03 01:39:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-03 01:39:30,901 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-03 01:39:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:39:30,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:39:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure eth_hdr [2022-11-03 01:39:30,902 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_hdr [2022-11-03 01:39:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-03 01:39:30,902 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-03 01:39:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 01:39:30,902 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 01:39:30,902 INFO L130 BoogieDeclarations]: Found specification of procedure fc_frame_payload_op [2022-11-03 01:39:30,902 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_frame_payload_op [2022-11-03 01:39:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_get_lesb [2022-11-03 01:39:30,903 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_get_lesb [2022-11-03 01:39:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:39:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:39:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:39:30,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:39:30,903 INFO L130 BoogieDeclarations]: Found specification of procedure fc_elsct_send [2022-11-03 01:39:30,904 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_elsct_send [2022-11-03 01:39:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure vlan_dev_vlan_id [2022-11-03 01:39:30,950 INFO L138 BoogieDeclarations]: Found implementation of procedure vlan_dev_vlan_id [2022-11-03 01:39:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure fc_queuecommand [2022-11-03 01:39:30,950 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_queuecommand [2022-11-03 01:39:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 01:39:30,950 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 01:39:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-03 01:39:30,950 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-03 01:39:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-03 01:39:30,950 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-03 01:39:30,951 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-03 01:39:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure fc_get_host_speed [2022-11-03 01:39:30,951 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_get_host_speed [2022-11-03 01:39:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_head_init [2022-11-03 01:39:30,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_head_init [2022-11-03 01:39:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_create [2022-11-03 01:39:30,951 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_create [2022-11-03 01:39:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 01:39:30,951 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 01:39:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 01:39:30,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 01:39:30,951 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_destroy [2022-11-03 01:39:30,951 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_destroy [2022-11-03 01:39:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 01:39:30,952 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 01:39:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:39:30,952 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:39:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_priv [2022-11-03 01:39:30,952 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_priv [2022-11-03 01:39:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure dev_uc_del [2022-11-03 01:39:30,952 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_uc_del [2022-11-03 01:39:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_destroy [2022-11-03 01:39:30,952 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_destroy [2022-11-03 01:39:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 01:39:30,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 01:39:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2022-11-03 01:39:30,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2022-11-03 01:39:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure fc_eh_device_reset [2022-11-03 01:39:30,953 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_eh_device_reset [2022-11-03 01:39:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:39:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 01:39:30,953 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 01:39:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_wwpn [2022-11-03 01:39:30,953 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_wwpn [2022-11-03 01:39:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-03 01:39:30,953 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-03 01:39:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:39:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-11-03 01:39:30,954 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-11-03 01:39:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-03 01:39:30,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-03 01:39:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2022-11-03 01:39:30,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2022-11-03 01:39:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_percpu_thread_destroy [2022-11-03 01:39:30,954 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_percpu_thread_destroy [2022-11-03 01:39:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2022-11-03 01:39:30,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2022-11-03 01:39:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-03 01:39:30,954 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-03 01:39:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_cleanup [2022-11-03 01:39:30,955 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_cleanup [2022-11-03 01:39:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:39:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~X~$Pointer$~X~int~TO~int [2022-11-03 01:39:30,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~X~$Pointer$~X~int~TO~int [2022-11-03 01:39:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-03 01:39:30,955 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-03 01:39:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure dev_add_pack [2022-11-03 01:39:30,955 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_add_pack [2022-11-03 01:39:30,955 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_wwnn [2022-11-03 01:39:30,955 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_wwnn [2022-11-03 01:39:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 01:39:30,956 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 01:39:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 01:39:30,956 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 01:39:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure fc_get_host_stats [2022-11-03 01:39:30,956 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_get_host_stats [2022-11-03 01:39:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_46 [2022-11-03 01:39:30,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_46 [2022-11-03 01:39:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_enable [2022-11-03 01:39:30,956 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_enable [2022-11-03 01:39:30,956 INFO L130 BoogieDeclarations]: Found specification of procedure ntoh24 [2022-11-03 01:39:30,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ntoh24 [2022-11-03 01:39:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure dev_uc_add [2022-11-03 01:39:30,957 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_uc_add [2022-11-03 01:39:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-03 01:39:30,957 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-03 01:39:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~TO~int [2022-11-03 01:39:30,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~TO~int [2022-11-03 01:39:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_if_destroy [2022-11-03 01:39:30,957 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_if_destroy [2022-11-03 01:39:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure dev_put [2022-11-03 01:39:30,957 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_put [2022-11-03 01:39:30,957 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_setup [2022-11-03 01:39:30,957 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_setup [2022-11-03 01:39:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_2 [2022-11-03 01:39:30,958 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_2 [2022-11-03 01:39:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:39:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_if_create [2022-11-03 01:39:30,958 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_if_create [2022-11-03 01:39:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_device_delete [2022-11-03 01:39:30,958 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_device_delete [2022-11-03 01:39:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:39:30,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:39:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure dev_mc_add [2022-11-03 01:39:30,958 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_mc_add [2022-11-03 01:39:30,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 01:39:30,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 01:39:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2022-11-03 01:39:30,959 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2022-11-03 01:39:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-03 01:39:30,959 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-03 01:39:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure __preempt_count_add [2022-11-03 01:39:30,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __preempt_count_add [2022-11-03 01:39:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_port_send [2022-11-03 01:39:30,959 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_port_send [2022-11-03 01:39:30,959 INFO L130 BoogieDeclarations]: Found specification of procedure fc_eh_host_reset [2022-11-03 01:39:30,959 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_eh_host_reset [2022-11-03 01:39:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_destroy_work [2022-11-03 01:39:30,960 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_destroy_work [2022-11-03 01:39:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-03 01:39:30,960 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-03 01:39:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_check [2022-11-03 01:39:30,960 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_check [2022-11-03 01:39:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2022-11-03 01:39:30,960 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2022-11-03 01:39:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure fc_slave_alloc [2022-11-03 01:39:30,960 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_slave_alloc [2022-11-03 01:39:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2022-11-03 01:39:30,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ffs [2022-11-03 01:39:30,960 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_elsct_send [2022-11-03 01:39:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_elsct_send [2022-11-03 01:39:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure vlan_dev_real_dev [2022-11-03 01:39:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure vlan_dev_real_dev [2022-11-03 01:39:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_maps_update_begin [2022-11-03 01:39:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_maps_update_begin [2022-11-03 01:39:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-11-03 01:39:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-11-03 01:39:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure dev_mc_del [2022-11-03 01:39:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_mc_del [2022-11-03 01:39:30,961 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_remove_pack [2022-11-03 01:39:30,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_remove_pack [2022-11-03 01:39:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:39:30,962 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-03 01:39:30,962 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-03 01:39:32,146 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:39:32,158 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:39:32,887 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:39:40,195 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:39:43,114 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:39:43,115 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:39:43,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:39:43 BoogieIcfgContainer [2022-11-03 01:39:43,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:39:43,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:39:43,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:39:43,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:39:43,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:39:25" (1/3) ... [2022-11-03 01:39:43,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa3898b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:39:43, skipping insertion in model container [2022-11-03 01:39:43,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:39:30" (2/3) ... [2022-11-03 01:39:43,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa3898b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:39:43, skipping insertion in model container [2022-11-03 01:39:43,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:39:43" (3/3) ... [2022-11-03 01:39:43,135 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i [2022-11-03 01:39:43,155 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:39:43,156 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:39:43,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:39:43,286 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;@106d1bf7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:39:43,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:39:43,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 1815 states, 1092 states have (on average 1.347985347985348) internal successors, (1472), 1151 states have internal predecessors, (1472), 572 states have call successors, (572), 150 states have call predecessors, (572), 149 states have return successors, (559), 549 states have call predecessors, (559), 559 states have call successors, (559) [2022-11-03 01:39:43,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-03 01:39:43,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:43,346 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-03 01:39:43,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:39:43,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:43,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1799025206, now seen corresponding path program 1 times [2022-11-03 01:39:43,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:43,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754361142] [2022-11-03 01:39:43,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:43,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:44,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2022-11-03 01:39:44,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:44,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754361142] [2022-11-03 01:39:44,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754361142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:44,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:44,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:39:44,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463149896] [2022-11-03 01:39:44,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:44,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:39:44,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:44,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:39:44,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:39:44,909 INFO L87 Difference]: Start difference. First operand has 1815 states, 1092 states have (on average 1.347985347985348) internal successors, (1472), 1151 states have internal predecessors, (1472), 572 states have call successors, (572), 150 states have call predecessors, (572), 149 states have return successors, (559), 549 states have call predecessors, (559), 559 states have call successors, (559) Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-03 01:39:49,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:49,016 INFO L93 Difference]: Finished difference Result 5220 states and 7538 transitions. [2022-11-03 01:39:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:39:49,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 391 [2022-11-03 01:39:49,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:49,082 INFO L225 Difference]: With dead ends: 5220 [2022-11-03 01:39:49,082 INFO L226 Difference]: Without dead ends: 3427 [2022-11-03 01:39:49,096 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 [2022-11-03 01:39:49,099 INFO L413 NwaCegarLoop]: 2810 mSDtfsCounter, 2444 mSDsluCounter, 2470 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2444 SdHoareTripleChecker+Valid, 4999 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:49,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2444 Valid, 4999 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-03 01:39:49,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3427 states. [2022-11-03 01:39:49,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3427 to 3423. [2022-11-03 01:39:49,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3423 states, 2079 states have (on average 1.3367003367003367) internal successors, (2779), 2168 states have internal predecessors, (2779), 1052 states have call successors, (1052), 292 states have call predecessors, (1052), 291 states have return successors, (1049), 1029 states have call predecessors, (1049), 1049 states have call successors, (1049) [2022-11-03 01:39:49,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3423 states to 3423 states and 4880 transitions. [2022-11-03 01:39:49,384 INFO L78 Accepts]: Start accepts. Automaton has 3423 states and 4880 transitions. Word has length 391 [2022-11-03 01:39:49,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:49,391 INFO L495 AbstractCegarLoop]: Abstraction has 3423 states and 4880 transitions. [2022-11-03 01:39:49,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-03 01:39:49,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3423 states and 4880 transitions. [2022-11-03 01:39:49,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-11-03 01:39:49,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:49,413 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-03 01:39:49,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:39:49,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:39:49,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:49,415 INFO L85 PathProgramCache]: Analyzing trace with hash -445108194, now seen corresponding path program 1 times [2022-11-03 01:39:49,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:49,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093081433] [2022-11-03 01:39:49,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:49,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1753 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1753 trivial. 0 not checked. [2022-11-03 01:39:51,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:51,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093081433] [2022-11-03 01:39:51,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093081433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:39:51,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:39:51,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:39:51,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363298275] [2022-11-03 01:39:51,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:39:51,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:39:51,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:51,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:39:51,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:39:51,921 INFO L87 Difference]: Start difference. First operand 3423 states and 4880 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 4 states have call successors, (55), 4 states have call predecessors, (55), 3 states have return successors, (51), 5 states have call predecessors, (51), 4 states have call successors, (51) [2022-11-03 01:40:04,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:07,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:09,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:11,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:16,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:18,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:37,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:40,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:42,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:43,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:43,692 INFO L93 Difference]: Finished difference Result 13304 states and 19329 transitions. [2022-11-03 01:40:43,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 01:40:43,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 4 states have call successors, (55), 4 states have call predecessors, (55), 3 states have return successors, (51), 5 states have call predecessors, (51), 4 states have call successors, (51) Word has length 408 [2022-11-03 01:40:43,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:43,760 INFO L225 Difference]: With dead ends: 13304 [2022-11-03 01:40:43,760 INFO L226 Difference]: Without dead ends: 9946 [2022-11-03 01:40:43,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:40:43,778 INFO L413 NwaCegarLoop]: 2284 mSDtfsCounter, 5316 mSDsluCounter, 5587 mSDsCounter, 0 mSdLazyCounter, 15481 mSolverCounterSat, 4608 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5932 SdHoareTripleChecker+Valid, 7143 SdHoareTripleChecker+Invalid, 20098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4608 IncrementalHoareTripleChecker+Valid, 15481 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:43,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5932 Valid, 7143 Invalid, 20098 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4608 Valid, 15481 Invalid, 9 Unknown, 0 Unchecked, 50.5s Time] [2022-11-03 01:40:43,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9946 states. [2022-11-03 01:40:44,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9946 to 9922. [2022-11-03 01:40:44,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9922 states, 5924 states have (on average 1.3160027008777853) internal successors, (7796), 6180 states have internal predecessors, (7796), 3112 states have call successors, (3112), 826 states have call predecessors, (3112), 885 states have return successors, (3484), 3119 states have call predecessors, (3484), 3107 states have call successors, (3484) [2022-11-03 01:40:44,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9922 states to 9922 states and 14392 transitions. [2022-11-03 01:40:44,489 INFO L78 Accepts]: Start accepts. Automaton has 9922 states and 14392 transitions. Word has length 408 [2022-11-03 01:40:44,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:44,493 INFO L495 AbstractCegarLoop]: Abstraction has 9922 states and 14392 transitions. [2022-11-03 01:40:44,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 4 states have call successors, (55), 4 states have call predecessors, (55), 3 states have return successors, (51), 5 states have call predecessors, (51), 4 states have call successors, (51) [2022-11-03 01:40:44,494 INFO L276 IsEmpty]: Start isEmpty. Operand 9922 states and 14392 transitions. [2022-11-03 01:40:44,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2022-11-03 01:40:44,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:44,516 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-03 01:40:44,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:40:44,516 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:40:44,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:44,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1293808162, now seen corresponding path program 1 times [2022-11-03 01:40:44,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:44,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251627460] [2022-11-03 01:40:44,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:44,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:46,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1753 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1753 trivial. 0 not checked. [2022-11-03 01:40:46,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:46,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251627460] [2022-11-03 01:40:46,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251627460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:40:46,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:40:46,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:40:46,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395859893] [2022-11-03 01:40:46,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:40:46,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:40:46,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:46,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:40:46,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:40:46,501 INFO L87 Difference]: Start difference. First operand 9922 states and 14392 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 4 states have call successors, (55), 4 states have call predecessors, (55), 3 states have return successors, (51), 5 states have call predecessors, (51), 4 states have call successors, (51) [2022-11-03 01:40:57,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:40:59,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:01,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:05,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:07,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:09,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:14,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:16,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:18,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:26,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:41,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:42,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:42,377 INFO L93 Difference]: Finished difference Result 26359 states and 42477 transitions. [2022-11-03 01:41:42,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 01:41:42,382 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 4 states have call successors, (55), 4 states have call predecessors, (55), 3 states have return successors, (51), 5 states have call predecessors, (51), 4 states have call successors, (51) Word has length 411 [2022-11-03 01:41:42,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:42,502 INFO L225 Difference]: With dead ends: 26359 [2022-11-03 01:41:42,502 INFO L226 Difference]: Without dead ends: 16502 [2022-11-03 01:41:42,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:41:42,565 INFO L413 NwaCegarLoop]: 2698 mSDtfsCounter, 4618 mSDsluCounter, 7443 mSDsCounter, 0 mSdLazyCounter, 17531 mSolverCounterSat, 4202 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5233 SdHoareTripleChecker+Valid, 9143 SdHoareTripleChecker+Invalid, 21744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4202 IncrementalHoareTripleChecker+Valid, 17531 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:42,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5233 Valid, 9143 Invalid, 21744 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4202 Valid, 17531 Invalid, 11 Unknown, 0 Unchecked, 54.5s Time] [2022-11-03 01:41:42,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16502 states. [2022-11-03 01:41:43,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16502 to 16386. [2022-11-03 01:41:43,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16386 states, 9590 states have (on average 1.3017726798748697) internal successors, (12484), 10080 states have internal predecessors, (12484), 5246 states have call successors, (5246), 1314 states have call predecessors, (5246), 1549 states have return successors, (8814), 5427 states have call predecessors, (8814), 5241 states have call successors, (8814) [2022-11-03 01:41:43,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16386 states to 16386 states and 26544 transitions. [2022-11-03 01:41:43,873 INFO L78 Accepts]: Start accepts. Automaton has 16386 states and 26544 transitions. Word has length 411 [2022-11-03 01:41:43,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:43,874 INFO L495 AbstractCegarLoop]: Abstraction has 16386 states and 26544 transitions. [2022-11-03 01:41:43,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 4 states have call successors, (55), 4 states have call predecessors, (55), 3 states have return successors, (51), 5 states have call predecessors, (51), 4 states have call successors, (51) [2022-11-03 01:41:43,874 INFO L276 IsEmpty]: Start isEmpty. Operand 16386 states and 26544 transitions. [2022-11-03 01:41:43,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-11-03 01:41:43,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:43,896 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-03 01:41:43,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:41:43,896 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:41:43,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:43,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1321521337, now seen corresponding path program 1 times [2022-11-03 01:41:43,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:43,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244828090] [2022-11-03 01:41:43,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:43,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:45,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1753 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1753 trivial. 0 not checked. [2022-11-03 01:41:45,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:45,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244828090] [2022-11-03 01:41:45,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244828090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:45,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:45,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:41:45,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040623752] [2022-11-03 01:41:45,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:45,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:41:45,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:45,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:41:45,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:41:45,638 INFO L87 Difference]: Start difference. First operand 16386 states and 26544 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (55), 4 states have call predecessors, (55), 3 states have return successors, (51), 5 states have call predecessors, (51), 4 states have call successors, (51) [2022-11-03 01:41:55,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:57,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:41:59,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:42:02,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:42:04,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:42:06,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:42:08,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:42:33,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:42:35,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:42:38,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:42:39,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:39,356 INFO L93 Difference]: Finished difference Result 32729 states and 53297 transitions. [2022-11-03 01:42:39,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 01:42:39,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (55), 4 states have call predecessors, (55), 3 states have return successors, (51), 5 states have call predecessors, (51), 4 states have call successors, (51) Word has length 410 [2022-11-03 01:42:39,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:39,455 INFO L225 Difference]: With dead ends: 32729 [2022-11-03 01:42:39,455 INFO L226 Difference]: Without dead ends: 16384 [2022-11-03 01:42:39,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:42:39,533 INFO L413 NwaCegarLoop]: 2501 mSDtfsCounter, 4858 mSDsluCounter, 6878 mSDsCounter, 0 mSdLazyCounter, 16722 mSolverCounterSat, 4251 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5477 SdHoareTripleChecker+Valid, 8498 SdHoareTripleChecker+Invalid, 20983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4251 IncrementalHoareTripleChecker+Valid, 16722 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:39,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5477 Valid, 8498 Invalid, 20983 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4251 Valid, 16722 Invalid, 10 Unknown, 0 Unchecked, 52.3s Time] [2022-11-03 01:42:39,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16384 states. [2022-11-03 01:42:40,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16384 to 16268. [2022-11-03 01:42:40,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16268 states, 9530 states have (on average 1.3017838405036726) internal successors, (12406), 10010 states have internal predecessors, (12406), 5196 states have call successors, (5196), 1306 states have call predecessors, (5196), 1541 states have return successors, (8720), 5383 states have call predecessors, (8720), 5193 states have call successors, (8720) [2022-11-03 01:42:40,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16268 states to 16268 states and 26322 transitions. [2022-11-03 01:42:40,844 INFO L78 Accepts]: Start accepts. Automaton has 16268 states and 26322 transitions. Word has length 410 [2022-11-03 01:42:40,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:40,847 INFO L495 AbstractCegarLoop]: Abstraction has 16268 states and 26322 transitions. [2022-11-03 01:42:40,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 4 states have call successors, (55), 4 states have call predecessors, (55), 3 states have return successors, (51), 5 states have call predecessors, (51), 4 states have call successors, (51) [2022-11-03 01:42:40,848 INFO L276 IsEmpty]: Start isEmpty. Operand 16268 states and 26322 transitions. [2022-11-03 01:42:40,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-11-03 01:42:40,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:40,873 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 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] [2022-11-03 01:42:40,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:42:40,873 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:42:40,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:40,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1535235864, now seen corresponding path program 1 times [2022-11-03 01:42:40,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:40,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941926331] [2022-11-03 01:42:40,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:40,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:41,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1761 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1761 trivial. 0 not checked. [2022-11-03 01:42:41,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:41,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941926331] [2022-11-03 01:42:41,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941926331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:41,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:41,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:42:41,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706758309] [2022-11-03 01:42:41,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:41,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:42:41,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:41,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:42:41,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:41,465 INFO L87 Difference]: Start difference. First operand 16268 states and 26322 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-03 01:42:46,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:46,952 INFO L93 Difference]: Finished difference Result 47677 states and 77262 transitions. [2022-11-03 01:42:46,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:46,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 445 [2022-11-03 01:42:46,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:47,129 INFO L225 Difference]: With dead ends: 47677 [2022-11-03 01:42:47,129 INFO L226 Difference]: Without dead ends: 31474 [2022-11-03 01:42:47,198 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 [2022-11-03 01:42:47,199 INFO L413 NwaCegarLoop]: 2884 mSDtfsCounter, 2505 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2505 SdHoareTripleChecker+Valid, 5057 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:47,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2505 Valid, 5057 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-03 01:42:47,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31474 states. [2022-11-03 01:42:49,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31474 to 31467. [2022-11-03 01:42:49,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31467 states, 18422 states have (on average 1.301487352079036) internal successors, (23976), 19368 states have internal predecessors, (23976), 10020 states have call successors, (10020), 2563 states have call predecessors, (10020), 3024 states have return successors, (17029), 10385 states have call predecessors, (17029), 10015 states have call successors, (17029) [2022-11-03 01:42:49,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31467 states to 31467 states and 51025 transitions. [2022-11-03 01:42:49,818 INFO L78 Accepts]: Start accepts. Automaton has 31467 states and 51025 transitions. Word has length 445 [2022-11-03 01:42:49,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:49,819 INFO L495 AbstractCegarLoop]: Abstraction has 31467 states and 51025 transitions. [2022-11-03 01:42:49,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-03 01:42:49,819 INFO L276 IsEmpty]: Start isEmpty. Operand 31467 states and 51025 transitions. [2022-11-03 01:42:49,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-11-03 01:42:49,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:49,837 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 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] [2022-11-03 01:42:49,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:42:49,838 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:42:49,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:49,838 INFO L85 PathProgramCache]: Analyzing trace with hash 984804887, now seen corresponding path program 1 times [2022-11-03 01:42:49,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:49,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313152364] [2022-11-03 01:42:49,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:49,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1758 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2022-11-03 01:42:50,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:50,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313152364] [2022-11-03 01:42:50,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313152364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:50,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:50,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:42:50,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976173033] [2022-11-03 01:42:50,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:50,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:42:50,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:50,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:42:50,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:50,389 INFO L87 Difference]: Start difference. First operand 31467 states and 51025 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-03 01:42:56,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:56,712 INFO L93 Difference]: Finished difference Result 93850 states and 152181 transitions. [2022-11-03 01:42:56,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:56,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 444 [2022-11-03 01:42:56,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:57,101 INFO L225 Difference]: With dead ends: 93850 [2022-11-03 01:42:57,101 INFO L226 Difference]: Without dead ends: 62448 [2022-11-03 01:42:57,256 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 [2022-11-03 01:42:57,258 INFO L413 NwaCegarLoop]: 2933 mSDtfsCounter, 2465 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2465 SdHoareTripleChecker+Valid, 5119 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:57,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2465 Valid, 5119 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-03 01:42:57,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62448 states. [2022-11-03 01:43:01,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62448 to 62443. [2022-11-03 01:43:01,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62443 states, 36505 states have (on average 1.29938364607588) internal successors, (47434), 38371 states have internal predecessors, (47434), 19893 states have call successors, (19893), 5121 states have call predecessors, (19893), 6044 states have return successors, (33912), 20626 states have call predecessors, (33912), 19884 states have call successors, (33912) [2022-11-03 01:43:01,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62443 states to 62443 states and 101239 transitions. [2022-11-03 01:43:01,818 INFO L78 Accepts]: Start accepts. Automaton has 62443 states and 101239 transitions. Word has length 444 [2022-11-03 01:43:01,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:43:01,819 INFO L495 AbstractCegarLoop]: Abstraction has 62443 states and 101239 transitions. [2022-11-03 01:43:01,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-03 01:43:01,820 INFO L276 IsEmpty]: Start isEmpty. Operand 62443 states and 101239 transitions. [2022-11-03 01:43:01,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2022-11-03 01:43:01,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:43:01,846 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:43:01,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:43:01,847 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:43:01,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:43:01,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1249583235, now seen corresponding path program 1 times [2022-11-03 01:43:01,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:43:01,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323559971] [2022-11-03 01:43:01,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:01,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:43:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1772 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2022-11-03 01:43:03,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:43:03,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323559971] [2022-11-03 01:43:03,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323559971] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:43:03,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568314477] [2022-11-03 01:43:03,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:03,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:43:03,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:43:03,321 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:43:03,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:43:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:05,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 5997 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:43:05,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:43:05,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1772 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1772 trivial. 0 not checked. [2022-11-03 01:43:05,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:43:05,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568314477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:43:05,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:43:05,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-03 01:43:05,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401324024] [2022-11-03 01:43:05,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:43:05,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:43:05,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:43:05,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:43:05,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:43:05,498 INFO L87 Difference]: Start difference. First operand 62443 states and 101239 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-03 01:43:15,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:43:15,345 INFO L93 Difference]: Finished difference Result 170046 states and 277335 transitions. [2022-11-03 01:43:15,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:43:15,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) Word has length 478 [2022-11-03 01:43:15,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:43:16,215 INFO L225 Difference]: With dead ends: 170046 [2022-11-03 01:43:16,216 INFO L226 Difference]: Without dead ends: 123379 [2022-11-03 01:43:16,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:43:16,691 INFO L413 NwaCegarLoop]: 3495 mSDtfsCounter, 2477 mSDsluCounter, 2398 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2477 SdHoareTripleChecker+Valid, 5619 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:43:16,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2477 Valid, 5619 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-03 01:43:16,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123379 states. [2022-11-03 01:43:23,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123379 to 123376. [2022-11-03 01:43:23,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123376 states, 72204 states have (on average 1.300426569165143) internal successors, (93896), 75848 states have internal predecessors, (93896), 39162 states have call successors, (39162), 10162 states have call predecessors, (39162), 12009 states have return successors, (66929), 40659 states have call predecessors, (66929), 39153 states have call successors, (66929) [2022-11-03 01:43:25,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123376 states to 123376 states and 199987 transitions. [2022-11-03 01:43:25,228 INFO L78 Accepts]: Start accepts. Automaton has 123376 states and 199987 transitions. Word has length 478 [2022-11-03 01:43:25,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:43:25,229 INFO L495 AbstractCegarLoop]: Abstraction has 123376 states and 199987 transitions. [2022-11-03 01:43:25,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (66), 2 states have call predecessors, (66), 2 states have call successors, (66) [2022-11-03 01:43:25,230 INFO L276 IsEmpty]: Start isEmpty. Operand 123376 states and 199987 transitions. [2022-11-03 01:43:25,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2022-11-03 01:43:25,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:43:25,342 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 19, 19, 19, 19, 19, 19, 3, 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] [2022-11-03 01:43:25,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:43:25,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5906f9c1-2c49-4189-98e4-040fc87f9ddf/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:43:25,558 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:43:25,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:43:25,558 INFO L85 PathProgramCache]: Analyzing trace with hash 969143507, now seen corresponding path program 1 times [2022-11-03 01:43:25,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:43:25,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353064692] [2022-11-03 01:43:25,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:25,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:43:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:26,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3517 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3515 trivial. 0 not checked. [2022-11-03 01:43:26,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:43:26,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353064692] [2022-11-03 01:43:26,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353064692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:43:26,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:43:26,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:43:26,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056531157] [2022-11-03 01:43:26,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:43:26,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:43:26,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:43:26,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:43:26,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:43:26,769 INFO L87 Difference]: Start difference. First operand 123376 states and 199987 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61)