./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-08_1a-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_4a23f607-b30c-4e9f-941f-31e916930d7c/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/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_4a23f607-b30c-4e9f-941f-31e916930d7c/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/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_4a23f607-b30c-4e9f-941f-31e916930d7c/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 a3ff87c3e5fb8bea0460b71e9b9f7b5386599503dd506c0803db0e63f978b184 --- 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 04:11:05,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:11:05,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:11:05,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:11:05,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:11:05,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:11:05,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:11:05,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:11:05,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:11:05,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:11:05,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:11:05,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:11:05,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:11:05,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:11:05,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:11:05,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:11:05,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:11:05,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:11:05,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:11:05,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:11:05,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:11:05,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:11:05,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:11:05,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:11:05,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:11:05,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:11:05,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:11:05,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:11:05,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:11:05,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:11:05,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:11:05,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:11:05,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:11:05,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:11:05,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:11:05,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:11:05,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:11:05,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:11:05,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:11:05,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:11:05,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:11:05,700 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 04:11:05,749 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:11:05,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:11:05,750 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:11:05,751 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:11:05,752 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:11:05,752 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:11:05,752 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:11:05,752 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:11:05,753 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:11:05,753 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:11:05,754 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:11:05,755 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:11:05,755 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:11:05,755 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:11:05,755 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:11:05,756 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:11:05,756 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:11:05,756 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:11:05,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:11:05,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:11:05,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:11:05,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:11:05,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:11:05,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:11:05,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:11:05,760 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:11:05,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:11:05,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:11:05,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:11:05,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:11:05,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:11:05,763 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:11:05,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:11:05,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:11:05,764 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:11:05,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:11:05,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:11:05,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:11:05,765 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_4a23f607-b30c-4e9f-941f-31e916930d7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3ff87c3e5fb8bea0460b71e9b9f7b5386599503dd506c0803db0e63f978b184 [2022-11-03 04:11:06,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:11:06,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:11:06,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:11:06,141 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:11:06,142 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:11:06,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i [2022-11-03 04:11:06,277 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/bin/utaipan-7li7fVZpFI/data/6534af9ed/974e8658b26f44e9acaa3dbedf2f1113/FLAG6130bf56f [2022-11-03 04:11:07,623 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:11:07,625 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i [2022-11-03 04:11:07,732 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/bin/utaipan-7li7fVZpFI/data/6534af9ed/974e8658b26f44e9acaa3dbedf2f1113/FLAG6130bf56f [2022-11-03 04:11:08,219 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/bin/utaipan-7li7fVZpFI/data/6534af9ed/974e8658b26f44e9acaa3dbedf2f1113 [2022-11-03 04:11:08,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:11:08,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:11:08,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:11:08,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:11:08,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:11:08,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:11:08" (1/1) ... [2022-11-03 04:11:08,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b011e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:08, skipping insertion in model container [2022-11-03 04:11:08,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:11:08" (1/1) ... [2022-11-03 04:11:08,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:11:08,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:11:12,766 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_4a23f607-b30c-4e9f-941f-31e916930d7c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i[413960,413973] [2022-11-03 04:11:12,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:11:12,956 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:11:13,748 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_4a23f607-b30c-4e9f-941f-31e916930d7c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i[413960,413973] [2022-11-03 04:11:13,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:11:14,048 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:11:14,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:14 WrapperNode [2022-11-03 04:11:14,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:11:14,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:11:14,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:11:14,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:11:14,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:14" (1/1) ... [2022-11-03 04:11:14,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:14" (1/1) ... [2022-11-03 04:11:14,490 INFO L138 Inliner]: procedures = 420, calls = 2205, calls flagged for inlining = 207, calls inlined = 186, statements flattened = 6279 [2022-11-03 04:11:14,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:11:14,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:11:14,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:11:14,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:11:14,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:14" (1/1) ... [2022-11-03 04:11:14,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:14" (1/1) ... [2022-11-03 04:11:14,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:14" (1/1) ... [2022-11-03 04:11:14,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:14" (1/1) ... [2022-11-03 04:11:14,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:14" (1/1) ... [2022-11-03 04:11:14,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:14" (1/1) ... [2022-11-03 04:11:14,953 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:14" (1/1) ... [2022-11-03 04:11:14,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:14" (1/1) ... [2022-11-03 04:11:15,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:11:15,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:11:15,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:11:15,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:11:15,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:14" (1/1) ... [2022-11-03 04:11:15,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:11:15,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:11:15,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:11:15,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:11:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_done [2022-11-03 04:11:15,151 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_done [2022-11-03 04:11:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_get_wwn [2022-11-03 04:11:15,152 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_get_wwn [2022-11-03 04:11:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure fc_lport_bsg_request [2022-11-03 04:11:15,152 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_lport_bsg_request [2022-11-03 04:11:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-03 04:11:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_hostlist_del [2022-11-03 04:11:15,153 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_hostlist_del [2022-11-03 04:11:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-11-03 04:11:15,153 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-11-03 04:11:15,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 04:11:15,154 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 04:11:15,154 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-11-03 04:11:15,154 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-11-03 04:11:15,155 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-03 04:11:15,155 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-03 04:11:15,155 INFO L130 BoogieDeclarations]: Found specification of procedure fc_frame_header_get [2022-11-03 04:11:15,155 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_frame_header_get [2022-11-03 04:11:15,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 04:11:15,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 04:11:15,156 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_netdev [2022-11-03 04:11:15,156 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_netdev [2022-11-03 04:11:15,156 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_recv_flogi [2022-11-03 04:11:15,156 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_recv_flogi [2022-11-03 04:11:15,157 INFO L130 BoogieDeclarations]: Found specification of procedure fc_vport_setlink [2022-11-03 04:11:15,157 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_vport_setlink [2022-11-03 04:11:15,157 INFO L130 BoogieDeclarations]: Found specification of procedure fc_eh_abort [2022-11-03 04:11:15,157 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_eh_abort [2022-11-03 04:11:15,157 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-03 04:11:15,158 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-03 04:11:15,158 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_dev_from_skb [2022-11-03 04:11:15,158 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_dev_from_skb [2022-11-03 04:11:15,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_4 [2022-11-03 04:11:15,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_4 [2022-11-03 04:11:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_percpu_thread_create [2022-11-03 04:11:15,159 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_percpu_thread_create [2022-11-03 04:11:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_device_priv [2022-11-03 04:11:15,160 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_device_priv [2022-11-03 04:11:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure __preempt_count_sub [2022-11-03 04:11:15,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __preempt_count_sub [2022-11-03 04:11:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_link_ok [2022-11-03 04:11:15,161 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_link_ok [2022-11-03 04:11:15,161 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 04:11:15,161 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 04:11:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_vport_destroy [2022-11-03 04:11:15,162 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_vport_destroy [2022-11-03 04:11:15,162 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_alloc [2022-11-03 04:11:15,163 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_alloc [2022-11-03 04:11:15,164 INFO L130 BoogieDeclarations]: Found specification of procedure fc_get_host_port_state [2022-11-03 04:11:15,164 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_get_host_port_state [2022-11-03 04:11:15,165 INFO L130 BoogieDeclarations]: Found specification of procedure fc_release_transport [2022-11-03 04:11:15,165 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_release_transport [2022-11-03 04:11:15,165 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_reset [2022-11-03 04:11:15,165 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_reset [2022-11-03 04:11:15,165 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-03 04:11:15,166 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-03 04:11:15,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 04:11:15,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 04:11:15,167 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_link_speed_update [2022-11-03 04:11:15,167 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_link_speed_update [2022-11-03 04:11:15,168 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_xmit [2022-11-03 04:11:15,168 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_xmit [2022-11-03 04:11:15,168 INFO L130 BoogieDeclarations]: Found specification of procedure fc_fabric_logoff [2022-11-03 04:11:15,168 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_fabric_logoff [2022-11-03 04:11:15,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 04:11:15,169 INFO L130 BoogieDeclarations]: Found specification of procedure fc_frame_payload_get [2022-11-03 04:11:15,169 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_frame_payload_get [2022-11-03 04:11:15,169 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 04:11:15,169 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 04:11:15,169 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_remove [2022-11-03 04:11:15,170 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_remove [2022-11-03 04:11:15,171 INFO L130 BoogieDeclarations]: Found specification of procedure fc_exch_mgr_alloc [2022-11-03 04:11:15,171 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_exch_mgr_alloc [2022-11-03 04:11:15,171 INFO L130 BoogieDeclarations]: Found specification of procedure is_fip_mode [2022-11-03 04:11:15,171 INFO L138 BoogieDeclarations]: Found implementation of procedure is_fip_mode [2022-11-03 04:11:15,172 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_check_wait_queue [2022-11-03 04:11:15,172 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_check_wait_queue [2022-11-03 04:11:15,172 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-03 04:11:15,172 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-03 04:11:15,173 INFO L130 BoogieDeclarations]: Found specification of procedure fc_fabric_login [2022-11-03 04:11:15,173 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_fabric_login [2022-11-03 04:11:15,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 04:11:15,174 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_maps_update_done [2022-11-03 04:11:15,174 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_maps_update_done [2022-11-03 04:11:15,174 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_target [2022-11-03 04:11:15,175 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_target [2022-11-03 04:11:15,175 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_rport_loss_tmo [2022-11-03 04:11:15,176 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_rport_loss_tmo [2022-11-03 04:11:15,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 04:11:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_setup [2022-11-03 04:11:15,177 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_setup [2022-11-03 04:11:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 04:11:15,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 04:11:15,179 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 04:11:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_wwn_from_mac [2022-11-03 04:11:15,179 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_wwn_from_mac [2022-11-03 04:11:15,179 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-03 04:11:15,179 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-03 04:11:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-03 04:11:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-03 04:11:15,180 INFO L130 BoogieDeclarations]: Found specification of procedure fc_attach_transport [2022-11-03 04:11:15,180 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_attach_transport [2022-11-03 04:11:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_hostlist_lookup_port [2022-11-03 04:11:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_hostlist_lookup_port [2022-11-03 04:11:15,181 INFO L130 BoogieDeclarations]: Found specification of procedure dcb_getapp [2022-11-03 04:11:15,181 INFO L138 BoogieDeclarations]: Found implementation of procedure dcb_getapp [2022-11-03 04:11:15,182 INFO L130 BoogieDeclarations]: Found specification of procedure fc_rport_terminate_io [2022-11-03 04:11:15,182 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_rport_terminate_io [2022-11-03 04:11:15,183 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-03 04:11:15,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-03 04:11:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure _fcoe_create [2022-11-03 04:11:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure _fcoe_create [2022-11-03 04:11:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure fc_exch_mgr_free [2022-11-03 04:11:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_exch_mgr_free [2022-11-03 04:11:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 04:11:15,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 04:11:15,192 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-11-03 04:11:15,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-11-03 04:11:15,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 04:11:15,197 INFO L130 BoogieDeclarations]: Found specification of procedure dcb_ieee_getapp_mask [2022-11-03 04:11:15,198 INFO L138 BoogieDeclarations]: Found implementation of procedure dcb_ieee_getapp_mask [2022-11-03 04:11:15,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:11:15,198 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_mfs [2022-11-03 04:11:15,198 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_mfs [2022-11-03 04:11:15,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 04:11:15,199 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 04:11:15,199 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-11-03 04:11:15,199 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-11-03 04:11:15,199 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 04:11:15,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 04:11:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_link_up [2022-11-03 04:11:15,200 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_link_up [2022-11-03 04:11:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure lport_priv [2022-11-03 04:11:15,200 INFO L138 BoogieDeclarations]: Found implementation of procedure lport_priv [2022-11-03 04:11:15,200 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_netdev_features_change [2022-11-03 04:11:15,201 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_netdev_features_change [2022-11-03 04:11:15,201 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_disable [2022-11-03 04:11:15,201 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_disable [2022-11-03 04:11:15,201 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 04:11:15,201 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 04:11:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure fc_vport_set_state [2022-11-03 04:11:15,202 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_vport_set_state [2022-11-03 04:11:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_clean_pending_queue [2022-11-03 04:11:15,202 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_clean_pending_queue [2022-11-03 04:11:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_net [2022-11-03 04:11:15,203 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_net [2022-11-03 04:11:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_enabled [2022-11-03 04:11:15,203 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_enabled [2022-11-03 04:11:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_link_down [2022-11-03 04:11:15,203 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_link_down [2022-11-03 04:11:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure shost_priv [2022-11-03 04:11:15,204 INFO L138 BoogieDeclarations]: Found implementation of procedure shost_priv [2022-11-03 04:11:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-03 04:11:15,204 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-03 04:11:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:11:15,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:11:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure eth_hdr [2022-11-03 04:11:15,205 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_hdr [2022-11-03 04:11:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 04:11:15,205 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 04:11:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-03 04:11:15,206 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-03 04:11:15,206 INFO L130 BoogieDeclarations]: Found specification of procedure fc_frame_payload_op [2022-11-03 04:11:15,206 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_frame_payload_op [2022-11-03 04:11:15,207 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_get_lesb [2022-11-03 04:11:15,207 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_get_lesb [2022-11-03 04:11:15,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 04:11:15,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 04:11:15,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 04:11:15,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 04:11:15,208 INFO L130 BoogieDeclarations]: Found specification of procedure fc_elsct_send [2022-11-03 04:11:15,208 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_elsct_send [2022-11-03 04:11:15,208 INFO L130 BoogieDeclarations]: Found specification of procedure vlan_dev_vlan_id [2022-11-03 04:11:15,208 INFO L138 BoogieDeclarations]: Found implementation of procedure vlan_dev_vlan_id [2022-11-03 04:11:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure fc_queuecommand [2022-11-03 04:11:15,209 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_queuecommand [2022-11-03 04:11:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 04:11:15,209 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 04:11:15,209 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-03 04:11:15,210 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-03 04:11:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-03 04:11:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-03 04:11:15,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-03 04:11:15,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_17 [2022-11-03 04:11:15,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_17 [2022-11-03 04:11:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-03 04:11:15,211 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-03 04:11:15,211 INFO L130 BoogieDeclarations]: Found specification of procedure fc_get_host_speed [2022-11-03 04:11:15,211 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_get_host_speed [2022-11-03 04:11:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_head_init [2022-11-03 04:11:15,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_head_init [2022-11-03 04:11:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_create [2022-11-03 04:11:15,212 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_create [2022-11-03 04:11:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 04:11:15,213 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 04:11:15,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 04:11:15,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 04:11:15,213 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_destroy [2022-11-03 04:11:15,213 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_destroy [2022-11-03 04:11:15,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 04:11:15,214 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 04:11:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 04:11:15,214 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 04:11:15,214 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_priv [2022-11-03 04:11:15,214 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_priv [2022-11-03 04:11:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure dev_uc_del [2022-11-03 04:11:15,215 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_uc_del [2022-11-03 04:11:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_destroy [2022-11-03 04:11:15,215 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_destroy [2022-11-03 04:11:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 04:11:15,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 04:11:15,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2022-11-03 04:11:15,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2022-11-03 04:11:15,216 INFO L130 BoogieDeclarations]: Found specification of procedure fc_eh_device_reset [2022-11-03 04:11:15,216 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_eh_device_reset [2022-11-03 04:11:15,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 04:11:15,217 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 04:11:15,217 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 04:11:15,217 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_wwpn [2022-11-03 04:11:15,217 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_wwpn [2022-11-03 04:11:15,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 04:11:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-11-03 04:11:15,218 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-11-03 04:11:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2022-11-03 04:11:15,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2022-11-03 04:11:15,218 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_percpu_thread_destroy [2022-11-03 04:11:15,218 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_percpu_thread_destroy [2022-11-03 04:11:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2022-11-03 04:11:15,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2022-11-03 04:11:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-03 04:11:15,219 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-03 04:11:15,219 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_cleanup [2022-11-03 04:11:15,220 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_cleanup [2022-11-03 04:11:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 04:11:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~X~$Pointer$~X~int~TO~int [2022-11-03 04:11:15,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~X~$Pointer$~X~int~TO~int [2022-11-03 04:11:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-03 04:11:15,226 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-03 04:11:15,227 INFO L130 BoogieDeclarations]: Found specification of procedure dev_add_pack [2022-11-03 04:11:15,227 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_add_pack [2022-11-03 04:11:15,227 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_wwnn [2022-11-03 04:11:15,227 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_wwnn [2022-11-03 04:11:15,227 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 04:11:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 04:11:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 04:11:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 04:11:15,228 INFO L130 BoogieDeclarations]: Found specification of procedure fc_get_host_stats [2022-11-03 04:11:15,233 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_get_host_stats [2022-11-03 04:11:15,233 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_enable [2022-11-03 04:11:15,233 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_enable [2022-11-03 04:11:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure ntoh24 [2022-11-03 04:11:15,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ntoh24 [2022-11-03 04:11:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure dev_uc_add [2022-11-03 04:11:15,234 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_uc_add [2022-11-03 04:11:15,234 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-03 04:11:15,235 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-03 04:11:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~TO~int [2022-11-03 04:11:15,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~TO~int [2022-11-03 04:11:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_if_destroy [2022-11-03 04:11:15,235 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_if_destroy [2022-11-03 04:11:15,235 INFO L130 BoogieDeclarations]: Found specification of procedure dev_put [2022-11-03 04:11:15,236 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_put [2022-11-03 04:11:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_setup [2022-11-03 04:11:15,236 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_setup [2022-11-03 04:11:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_2 [2022-11-03 04:11:15,236 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_2 [2022-11-03 04:11:15,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 04:11:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_if_create [2022-11-03 04:11:15,237 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_if_create [2022-11-03 04:11:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_device_delete [2022-11-03 04:11:15,237 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_device_delete [2022-11-03 04:11:15,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 04:11:15,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 04:11:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure dev_mc_add [2022-11-03 04:11:15,238 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_mc_add [2022-11-03 04:11:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 04:11:15,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 04:11:15,238 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2022-11-03 04:11:15,239 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2022-11-03 04:11:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-03 04:11:15,239 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-03 04:11:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure __preempt_count_add [2022-11-03 04:11:15,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __preempt_count_add [2022-11-03 04:11:15,239 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_port_send [2022-11-03 04:11:15,240 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_port_send [2022-11-03 04:11:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure fc_eh_host_reset [2022-11-03 04:11:15,240 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_eh_host_reset [2022-11-03 04:11:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_destroy_work [2022-11-03 04:11:15,240 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_destroy_work [2022-11-03 04:11:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-03 04:11:15,241 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-03 04:11:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_check [2022-11-03 04:11:15,241 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_check [2022-11-03 04:11:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2022-11-03 04:11:15,241 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2022-11-03 04:11:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure fc_slave_alloc [2022-11-03 04:11:15,242 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_slave_alloc [2022-11-03 04:11:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2022-11-03 04:11:15,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ffs [2022-11-03 04:11:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_elsct_send [2022-11-03 04:11:15,242 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_elsct_send [2022-11-03 04:11:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure vlan_dev_real_dev [2022-11-03 04:11:15,243 INFO L138 BoogieDeclarations]: Found implementation of procedure vlan_dev_real_dev [2022-11-03 04:11:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_maps_update_begin [2022-11-03 04:11:15,243 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_maps_update_begin [2022-11-03 04:11:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-11-03 04:11:15,243 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-11-03 04:11:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure dev_mc_del [2022-11-03 04:11:15,244 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_mc_del [2022-11-03 04:11:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_remove_pack [2022-11-03 04:11:15,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_remove_pack [2022-11-03 04:11:15,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:11:15,245 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-03 04:11:15,245 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-03 04:11:16,601 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:11:16,608 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:11:17,749 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 04:11:26,444 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:11:30,671 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:11:30,671 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 04:11:30,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:11:30 BoogieIcfgContainer [2022-11-03 04:11:30,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:11:30,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:11:30,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:11:30,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:11:30,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:11:08" (1/3) ... [2022-11-03 04:11:30,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c61195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:11:30, skipping insertion in model container [2022-11-03 04:11:30,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:11:14" (2/3) ... [2022-11-03 04:11:30,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c61195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:11:30, skipping insertion in model container [2022-11-03 04:11:30,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:11:30" (3/3) ... [2022-11-03 04:11:30,693 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i [2022-11-03 04:11:30,717 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:11:30,718 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:11:30,892 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:11:30,901 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;@402d26e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:11:30,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:11:30,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 1810 states, 1094 states have (on average 1.3491773308957953) internal successors, (1476), 1153 states have internal predecessors, (1476), 567 states have call successors, (567), 148 states have call predecessors, (567), 147 states have return successors, (554), 544 states have call predecessors, (554), 554 states have call successors, (554) [2022-11-03 04:11:30,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-03 04:11:30,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:30,977 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:11:30,979 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:11:30,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:30,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1167434265, now seen corresponding path program 1 times [2022-11-03 04:11:31,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:31,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143563867] [2022-11-03 04:11:31,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:31,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2022-11-03 04:11:32,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:32,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143563867] [2022-11-03 04:11:32,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143563867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:32,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:32,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:11:32,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262514425] [2022-11-03 04:11:32,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:32,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:11:32,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:32,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:11:32,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:11:32,894 INFO L87 Difference]: Start difference. First operand has 1810 states, 1094 states have (on average 1.3491773308957953) internal successors, (1476), 1153 states have internal predecessors, (1476), 567 states have call successors, (567), 148 states have call predecessors, (567), 147 states have return successors, (554), 544 states have call predecessors, (554), 554 states have call successors, (554) Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 04:11:38,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:38,458 INFO L93 Difference]: Finished difference Result 5114 states and 7428 transitions. [2022-11-03 04:11:38,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:11:38,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 327 [2022-11-03 04:11:38,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:38,524 INFO L225 Difference]: With dead ends: 5114 [2022-11-03 04:11:38,525 INFO L226 Difference]: Without dead ends: 3331 [2022-11-03 04:11:38,546 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 04:11:38,551 INFO L413 NwaCegarLoop]: 2955 mSDtfsCounter, 2246 mSDsluCounter, 2521 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2246 SdHoareTripleChecker+Valid, 5195 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:38,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2246 Valid, 5195 Invalid, 620 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-03 04:11:38,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3331 states. [2022-11-03 04:11:38,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3331 to 3326. [2022-11-03 04:11:38,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3326 states, 2035 states have (on average 1.3444717444717444) internal successors, (2736), 2120 states have internal predecessors, (2736), 1011 states have call successors, (1011), 280 states have call predecessors, (1011), 279 states have return successors, (1036), 989 states have call predecessors, (1036), 1009 states have call successors, (1036) [2022-11-03 04:11:38,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 4783 transitions. [2022-11-03 04:11:38,918 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 4783 transitions. Word has length 327 [2022-11-03 04:11:38,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:38,927 INFO L495 AbstractCegarLoop]: Abstraction has 3326 states and 4783 transitions. [2022-11-03 04:11:38,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 04:11:38,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 4783 transitions. [2022-11-03 04:11:38,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-11-03 04:11:38,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:38,955 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:11:38,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:11:38,956 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:11:38,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:38,957 INFO L85 PathProgramCache]: Analyzing trace with hash 104794519, now seen corresponding path program 1 times [2022-11-03 04:11:38,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:38,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038314291] [2022-11-03 04:11:38,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:38,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:39,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2022-11-03 04:11:39,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:39,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038314291] [2022-11-03 04:11:39,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038314291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:39,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:39,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:11:39,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320638416] [2022-11-03 04:11:39,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:39,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:11:39,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:39,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:11:39,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:11:39,907 INFO L87 Difference]: Start difference. First operand 3326 states and 4783 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-03 04:11:45,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:45,779 INFO L93 Difference]: Finished difference Result 9786 states and 14055 transitions. [2022-11-03 04:11:45,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:11:45,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 357 [2022-11-03 04:11:45,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:45,842 INFO L225 Difference]: With dead ends: 9786 [2022-11-03 04:11:45,843 INFO L226 Difference]: Without dead ends: 6525 [2022-11-03 04:11:45,865 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 04:11:45,866 INFO L413 NwaCegarLoop]: 2790 mSDtfsCounter, 2506 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2506 SdHoareTripleChecker+Valid, 4962 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:45,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2506 Valid, 4962 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-03 04:11:45,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6525 states. [2022-11-03 04:11:46,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6525 to 6510. [2022-11-03 04:11:46,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6510 states, 3984 states have (on average 1.3458835341365463) internal successors, (5362), 4156 states have internal predecessors, (5362), 1969 states have call successors, (1969), 557 states have call predecessors, (1969), 556 states have return successors, (2019), 1924 states have call predecessors, (2019), 1967 states have call successors, (2019) [2022-11-03 04:11:46,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6510 states to 6510 states and 9350 transitions. [2022-11-03 04:11:46,395 INFO L78 Accepts]: Start accepts. Automaton has 6510 states and 9350 transitions. Word has length 357 [2022-11-03 04:11:46,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:46,399 INFO L495 AbstractCegarLoop]: Abstraction has 6510 states and 9350 transitions. [2022-11-03 04:11:46,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-03 04:11:46,400 INFO L276 IsEmpty]: Start isEmpty. Operand 6510 states and 9350 transitions. [2022-11-03 04:11:46,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-11-03 04:11:46,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:46,420 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-03 04:11:46,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:11:46,421 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:11:46,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:46,434 INFO L85 PathProgramCache]: Analyzing trace with hash 935275120, now seen corresponding path program 1 times [2022-11-03 04:11:46,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:11:46,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693235092] [2022-11-03 04:11:46,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:46,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:11:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-03 04:11:49,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:11:49,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693235092] [2022-11-03 04:11:49,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693235092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:49,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:49,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 04:11:49,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121827724] [2022-11-03 04:11:49,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:49,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 04:11:49,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:11:49,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 04:11:49,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:11:49,307 INFO L87 Difference]: Start difference. First operand 6510 states and 9350 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) [2022-11-03 04:12:05,262 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 04:12:09,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:12,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:14,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:20,709 WARN L539 Checker$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 04:12:22,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:25,898 WARN L539 Checker$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 04:12:52,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:12:54,198 WARN L539 Checker$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 04:12:56,484 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 04:12:57,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:12:57,876 INFO L93 Difference]: Finished difference Result 24104 states and 35663 transitions. [2022-11-03 04:12:57,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 04:12:57,877 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) Word has length 423 [2022-11-03 04:12:57,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:12:58,069 INFO L225 Difference]: With dead ends: 24104 [2022-11-03 04:12:58,069 INFO L226 Difference]: Without dead ends: 17659 [2022-11-03 04:12:58,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-03 04:12:58,137 INFO L413 NwaCegarLoop]: 2902 mSDtfsCounter, 4520 mSDsluCounter, 7984 mSDsCounter, 0 mSdLazyCounter, 17680 mSolverCounterSat, 4126 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5130 SdHoareTripleChecker+Valid, 9769 SdHoareTripleChecker+Invalid, 21816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4126 IncrementalHoareTripleChecker+Valid, 17680 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:12:58,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5130 Valid, 9769 Invalid, 21816 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4126 Valid, 17680 Invalid, 10 Unknown, 0 Unchecked, 66.6s Time] [2022-11-03 04:12:58,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17659 states. [2022-11-03 04:12:59,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17659 to 17562. [2022-11-03 04:12:59,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17562 states, 10570 states have (on average 1.3265846736045412) internal successors, (14022), 11040 states have internal predecessors, (14022), 5385 states have call successors, (5385), 1503 states have call predecessors, (5385), 1606 states have return successors, (6467), 5382 states have call predecessors, (6467), 5383 states have call successors, (6467) [2022-11-03 04:12:59,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17562 states to 17562 states and 25874 transitions. [2022-11-03 04:12:59,728 INFO L78 Accepts]: Start accepts. Automaton has 17562 states and 25874 transitions. Word has length 423 [2022-11-03 04:12:59,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:12:59,729 INFO L495 AbstractCegarLoop]: Abstraction has 17562 states and 25874 transitions. [2022-11-03 04:12:59,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) [2022-11-03 04:12:59,749 INFO L276 IsEmpty]: Start isEmpty. Operand 17562 states and 25874 transitions. [2022-11-03 04:12:59,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-11-03 04:12:59,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:12:59,770 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:12:59,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:12:59,770 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:12:59,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:12:59,772 INFO L85 PathProgramCache]: Analyzing trace with hash 371942525, now seen corresponding path program 1 times [2022-11-03 04:12:59,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:12:59,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88537880] [2022-11-03 04:12:59,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:12:59,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:13:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:01,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-03 04:13:01,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:13:01,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88537880] [2022-11-03 04:13:01,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88537880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:13:01,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:13:01,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 04:13:01,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137870411] [2022-11-03 04:13:01,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:13:01,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 04:13:01,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:13:01,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 04:13:01,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:13:01,958 INFO L87 Difference]: Start difference. First operand 17562 states and 25874 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) [2022-11-03 04:13:15,757 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 04:13:19,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:13:25,515 WARN L539 Checker$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 04:13:28,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:13:30,673 WARN L539 Checker$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 04:13:54,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:13:57,103 WARN L539 Checker$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 04:13:58,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:13:58,263 INFO L93 Difference]: Finished difference Result 35136 states and 51869 transitions. [2022-11-03 04:13:58,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 04:13:58,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) Word has length 422 [2022-11-03 04:13:58,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:13:58,376 INFO L225 Difference]: With dead ends: 35136 [2022-11-03 04:13:58,377 INFO L226 Difference]: Without dead ends: 17639 [2022-11-03 04:13:58,466 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 04:13:58,467 INFO L413 NwaCegarLoop]: 2911 mSDtfsCounter, 4504 mSDsluCounter, 8068 mSDsCounter, 0 mSdLazyCounter, 17705 mSolverCounterSat, 4078 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5114 SdHoareTripleChecker+Valid, 9853 SdHoareTripleChecker+Invalid, 21790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4078 IncrementalHoareTripleChecker+Valid, 17705 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:13:58,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5114 Valid, 9853 Invalid, 21790 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4078 Valid, 17705 Invalid, 7 Unknown, 0 Unchecked, 54.7s Time] [2022-11-03 04:13:58,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17639 states. [2022-11-03 04:13:59,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17639 to 17542. [2022-11-03 04:13:59,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17542 states, 10562 states have (on average 1.325695890929748) internal successors, (14002), 11028 states have internal predecessors, (14002), 5373 states have call successors, (5373), 1503 states have call predecessors, (5373), 1606 states have return successors, (6431), 5370 states have call predecessors, (6431), 5371 states have call successors, (6431) [2022-11-03 04:13:59,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17542 states to 17542 states and 25806 transitions. [2022-11-03 04:13:59,893 INFO L78 Accepts]: Start accepts. Automaton has 17542 states and 25806 transitions. Word has length 422 [2022-11-03 04:13:59,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:13:59,896 INFO L495 AbstractCegarLoop]: Abstraction has 17542 states and 25806 transitions. [2022-11-03 04:13:59,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) [2022-11-03 04:13:59,897 INFO L276 IsEmpty]: Start isEmpty. Operand 17542 states and 25806 transitions. [2022-11-03 04:13:59,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-11-03 04:13:59,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:13:59,920 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-03 04:13:59,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 04:13:59,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:13:59,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:13:59,922 INFO L85 PathProgramCache]: Analyzing trace with hash -273136409, now seen corresponding path program 1 times [2022-11-03 04:13:59,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:13:59,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039907013] [2022-11-03 04:13:59,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:59,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:14:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:02,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-03 04:14:02,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:14:02,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039907013] [2022-11-03 04:14:02,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039907013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:14:02,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:14:02,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 04:14:02,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791662159] [2022-11-03 04:14:02,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:02,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 04:14:02,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:14:02,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 04:14:02,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:14:02,211 INFO L87 Difference]: Start difference. First operand 17542 states and 25806 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) [2022-11-03 04:14:13,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:15,946 WARN L539 Checker$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 04:14:18,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:21,629 WARN L539 Checker$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 04:14:24,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:26,996 WARN L539 Checker$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 04:14:47,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:50,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:52,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:14:54,888 WARN L539 Checker$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 04:14:56,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:56,038 INFO L93 Difference]: Finished difference Result 34921 states and 51400 transitions. [2022-11-03 04:14:56,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 04:14:56,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) Word has length 421 [2022-11-03 04:14:56,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:56,122 INFO L225 Difference]: With dead ends: 34921 [2022-11-03 04:14:56,122 INFO L226 Difference]: Without dead ends: 17420 [2022-11-03 04:14:56,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-03 04:14:56,185 INFO L413 NwaCegarLoop]: 2609 mSDtfsCounter, 4762 mSDsluCounter, 6277 mSDsCounter, 0 mSdLazyCounter, 16213 mSolverCounterSat, 4202 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5367 SdHoareTripleChecker+Valid, 8035 SdHoareTripleChecker+Invalid, 20425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4202 IncrementalHoareTripleChecker+Valid, 16213 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:56,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5367 Valid, 8035 Invalid, 20425 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4202 Valid, 16213 Invalid, 10 Unknown, 0 Unchecked, 52.4s Time] [2022-11-03 04:14:56,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17420 states. [2022-11-03 04:14:57,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17420 to 17328. [2022-11-03 04:14:57,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17328 states, 10450 states have (on average 1.3265071770334929) internal successors, (13862), 10906 states have internal predecessors, (13862), 5295 states have call successors, (5295), 1479 states have call predecessors, (5295), 1582 states have return successors, (6279), 5294 states have call predecessors, (6279), 5293 states have call successors, (6279) [2022-11-03 04:14:57,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17328 states to 17328 states and 25436 transitions. [2022-11-03 04:14:57,337 INFO L78 Accepts]: Start accepts. Automaton has 17328 states and 25436 transitions. Word has length 421 [2022-11-03 04:14:57,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:57,338 INFO L495 AbstractCegarLoop]: Abstraction has 17328 states and 25436 transitions. [2022-11-03 04:14:57,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) [2022-11-03 04:14:57,338 INFO L276 IsEmpty]: Start isEmpty. Operand 17328 states and 25436 transitions. [2022-11-03 04:14:57,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-11-03 04:14:57,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:57,358 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] [2022-11-03 04:14:57,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 04:14:57,359 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:57,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:57,359 INFO L85 PathProgramCache]: Analyzing trace with hash 724661905, now seen corresponding path program 1 times [2022-11-03 04:14:57,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:14:57,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061276427] [2022-11-03 04:14:57,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:57,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:14:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2022-11-03 04:14:57,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:14:57,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061276427] [2022-11-03 04:14:57,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061276427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:14:57,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:14:57,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:14:57,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357480894] [2022-11-03 04:14:57,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:57,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:14:57,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:14:57,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:14:57,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:14:57,939 INFO L87 Difference]: Start difference. First operand 17328 states and 25436 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 04:15:02,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:15:02,874 INFO L93 Difference]: Finished difference Result 49149 states and 72016 transitions. [2022-11-03 04:15:02,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:15:02,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 437 [2022-11-03 04:15:02,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:15:03,022 INFO L225 Difference]: With dead ends: 49149 [2022-11-03 04:15:03,022 INFO L226 Difference]: Without dead ends: 31886 [2022-11-03 04:15:03,077 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 04:15:03,077 INFO L413 NwaCegarLoop]: 2801 mSDtfsCounter, 2410 mSDsluCounter, 2434 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2410 SdHoareTripleChecker+Valid, 4955 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:15:03,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2410 Valid, 4955 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-03 04:15:03,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31886 states. [2022-11-03 04:15:04,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31886 to 31869. [2022-11-03 04:15:04,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31869 states, 19181 states have (on average 1.3244356394348573) internal successors, (25404), 20043 states have internal predecessors, (25404), 9668 states have call successors, (9668), 2812 states have call predecessors, (9668), 3019 states have return successors, (11578), 9677 states have call predecessors, (11578), 9666 states have call successors, (11578) [2022-11-03 04:15:04,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31869 states to 31869 states and 46650 transitions. [2022-11-03 04:15:04,890 INFO L78 Accepts]: Start accepts. Automaton has 31869 states and 46650 transitions. Word has length 437 [2022-11-03 04:15:04,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:15:04,891 INFO L495 AbstractCegarLoop]: Abstraction has 31869 states and 46650 transitions. [2022-11-03 04:15:04,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 04:15:04,891 INFO L276 IsEmpty]: Start isEmpty. Operand 31869 states and 46650 transitions. [2022-11-03 04:15:04,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-11-03 04:15:04,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:15:04,908 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2022-11-03 04:15:04,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 04:15:04,909 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:15:04,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:15:04,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1996118429, now seen corresponding path program 1 times [2022-11-03 04:15:04,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:15:04,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979009975] [2022-11-03 04:15:04,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:04,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:15:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1756 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1753 trivial. 0 not checked. [2022-11-03 04:15:05,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:15:05,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979009975] [2022-11-03 04:15:05,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979009975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:15:05,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:15:05,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:15:05,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223246339] [2022-11-03 04:15:05,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:15:05,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:15:05,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:15:05,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:15:05,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:15:05,717 INFO L87 Difference]: Start difference. First operand 31869 states and 46650 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-03 04:15:11,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:15:11,476 INFO L93 Difference]: Finished difference Result 94572 states and 138274 transitions. [2022-11-03 04:15:11,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:15:11,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 455 [2022-11-03 04:15:11,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:15:11,807 INFO L225 Difference]: With dead ends: 94572 [2022-11-03 04:15:11,807 INFO L226 Difference]: Without dead ends: 62768 [2022-11-03 04:15:12,100 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 04:15:12,102 INFO L413 NwaCegarLoop]: 2929 mSDtfsCounter, 2466 mSDsluCounter, 2464 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2466 SdHoareTripleChecker+Valid, 5114 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:15:12,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2466 Valid, 5114 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-03 04:15:12,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62768 states. [2022-11-03 04:15:16,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62768 to 62751. [2022-11-03 04:15:16,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62751 states, 37673 states have (on average 1.3206275051097602) internal successors, (49752), 39345 states have internal predecessors, (49752), 19056 states have call successors, (19056), 5606 states have call predecessors, (19056), 6021 states have return successors, (22878), 19079 states have call predecessors, (22878), 19054 states have call successors, (22878) [2022-11-03 04:15:16,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62751 states to 62751 states and 91686 transitions. [2022-11-03 04:15:16,659 INFO L78 Accepts]: Start accepts. Automaton has 62751 states and 91686 transitions. Word has length 455 [2022-11-03 04:15:16,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:15:16,661 INFO L495 AbstractCegarLoop]: Abstraction has 62751 states and 91686 transitions. [2022-11-03 04:15:16,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 2 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-03 04:15:16,661 INFO L276 IsEmpty]: Start isEmpty. Operand 62751 states and 91686 transitions. [2022-11-03 04:15:16,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-11-03 04:15:16,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:15:16,959 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 19, 19, 19, 19, 19, 19, 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] [2022-11-03 04:15:16,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 04:15:16,959 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:15:16,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:15:16,960 INFO L85 PathProgramCache]: Analyzing trace with hash -217245948, now seen corresponding path program 1 times [2022-11-03 04:15:16,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:15:16,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523703503] [2022-11-03 04:15:16,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:16,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:15:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:18,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3511 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3507 trivial. 0 not checked. [2022-11-03 04:15:18,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:15:18,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523703503] [2022-11-03 04:15:18,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523703503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:15:18,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:15:18,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:15:18,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003757324] [2022-11-03 04:15:18,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:15:18,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:15:18,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:15:18,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:15:18,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:15:18,254 INFO L87 Difference]: Start difference. First operand 62751 states and 91686 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-03 04:15:25,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:15:25,322 INFO L93 Difference]: Finished difference Result 125538 states and 183425 transitions. [2022-11-03 04:15:25,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:15:25,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 508 [2022-11-03 04:15:25,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:15:25,936 INFO L225 Difference]: With dead ends: 125538 [2022-11-03 04:15:25,936 INFO L226 Difference]: Without dead ends: 62804 [2022-11-03 04:15:26,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:15:26,093 INFO L413 NwaCegarLoop]: 2280 mSDtfsCounter, 10 mSDsluCounter, 5120 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 6829 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:15:26,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 6829 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-03 04:15:26,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62804 states. [2022-11-03 04:15:29,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62804 to 62754. [2022-11-03 04:15:29,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62754 states, 37676 states have (on average 1.3201773011997027) internal successors, (49739), 39348 states have internal predecessors, (49739), 19056 states have call successors, (19056), 5606 states have call predecessors, (19056), 6021 states have return successors, (22878), 19079 states have call predecessors, (22878), 19054 states have call successors, (22878) [2022-11-03 04:15:29,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62754 states to 62754 states and 91673 transitions. [2022-11-03 04:15:29,843 INFO L78 Accepts]: Start accepts. Automaton has 62754 states and 91673 transitions. Word has length 508 [2022-11-03 04:15:29,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:15:29,844 INFO L495 AbstractCegarLoop]: Abstraction has 62754 states and 91673 transitions. [2022-11-03 04:15:29,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-03 04:15:29,844 INFO L276 IsEmpty]: Start isEmpty. Operand 62754 states and 91673 transitions. [2022-11-03 04:15:29,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2022-11-03 04:15:29,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:15:29,887 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 19, 19, 19, 19, 19, 19, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:15:29,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 04:15:29,887 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:15:29,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:15:29,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1694263084, now seen corresponding path program 1 times [2022-11-03 04:15:29,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:15:29,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2991068] [2022-11-03 04:15:29,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:29,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:15:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3511 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3507 trivial. 0 not checked. [2022-11-03 04:15:35,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:15:35,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2991068] [2022-11-03 04:15:35,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2991068] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:15:35,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101859896] [2022-11-03 04:15:35,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:35,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:15:35,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:15:35,368 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:15:35,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 04:15:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:37,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 5619 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 04:15:37,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:15:37,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3511 backedges. 1214 proven. 0 refuted. 0 times theorem prover too weak. 2297 trivial. 0 not checked. [2022-11-03 04:15:37,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:15:37,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101859896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:15:37,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:15:37,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-03 04:15:37,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162354746] [2022-11-03 04:15:37,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:15:37,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:15:37,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:15:37,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:15:37,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:15:37,472 INFO L87 Difference]: Start difference. First operand 62754 states and 91673 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-03 04:15:44,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:15:44,062 INFO L93 Difference]: Finished difference Result 125551 states and 183408 transitions. [2022-11-03 04:15:44,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:15:44,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 509 [2022-11-03 04:15:44,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:15:44,361 INFO L225 Difference]: With dead ends: 125551 [2022-11-03 04:15:44,362 INFO L226 Difference]: Without dead ends: 62798 [2022-11-03 04:15:44,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:15:44,543 INFO L413 NwaCegarLoop]: 2280 mSDtfsCounter, 14 mSDsluCounter, 5121 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 6830 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:15:44,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 6830 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-03 04:15:44,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62798 states. [2022-11-03 04:15:47,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62798 to 62726. [2022-11-03 04:15:47,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62726 states, 37648 states have (on average 1.3191935826604335) internal successors, (49665), 39320 states have internal predecessors, (49665), 19056 states have call successors, (19056), 5606 states have call predecessors, (19056), 6021 states have return successors, (22878), 19079 states have call predecessors, (22878), 19054 states have call successors, (22878) [2022-11-03 04:15:47,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62726 states to 62726 states and 91599 transitions. [2022-11-03 04:15:47,637 INFO L78 Accepts]: Start accepts. Automaton has 62726 states and 91599 transitions. Word has length 509 [2022-11-03 04:15:47,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:15:47,638 INFO L495 AbstractCegarLoop]: Abstraction has 62726 states and 91599 transitions. [2022-11-03 04:15:47,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-03 04:15:47,639 INFO L276 IsEmpty]: Start isEmpty. Operand 62726 states and 91599 transitions. [2022-11-03 04:15:47,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2022-11-03 04:15:47,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:15:47,663 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:15:47,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:15:47,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:15:47,879 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:15:47,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:15:47,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1654881677, now seen corresponding path program 1 times [2022-11-03 04:15:47,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:15:47,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853114498] [2022-11-03 04:15:47,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:47,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:15:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:48,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1774 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1772 trivial. 0 not checked. [2022-11-03 04:15:48,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:15:48,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853114498] [2022-11-03 04:15:48,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853114498] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:15:48,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850478456] [2022-11-03 04:15:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:48,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:15:48,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:15:48,642 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:15:48,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a23f607-b30c-4e9f-941f-31e916930d7c/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 04:15:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:50,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 6164 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 04:15:50,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:15:50,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1774 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2022-11-03 04:15:50,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:15:50,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850478456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:15:50,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:15:50,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-03 04:15:50,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469278771] [2022-11-03 04:15:50,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:15:50,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:15:50,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:15:50,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:15:50,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:15:50,745 INFO L87 Difference]: Start difference. First operand 62726 states and 91599 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) [2022-11-03 04:15:58,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:15:58,837 INFO L93 Difference]: Finished difference Result 157068 states and 228579 transitions. [2022-11-03 04:15:58,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:15:58,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (69), 2 states have call predecessors, (69), 2 states have call successors, (69) Word has length 492 [2022-11-03 04:15:58,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:15:59,343 INFO L225 Difference]: With dead ends: 157068 [2022-11-03 04:15:59,343 INFO L226 Difference]: Without dead ends: 122407 [2022-11-03 04:15:59,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 492 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 04:15:59,732 INFO L413 NwaCegarLoop]: 3161 mSDtfsCounter, 2465 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2465 SdHoareTripleChecker+Valid, 5283 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:15:59,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2465 Valid, 5283 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-03 04:15:59,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122407 states.