./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29fc708-fcdc-483c-92f4-02aed11b96fb/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29fc708-fcdc-483c-92f4-02aed11b96fb/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29fc708-fcdc-483c-92f4-02aed11b96fb/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29fc708-fcdc-483c-92f4-02aed11b96fb/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29fc708-fcdc-483c-92f4-02aed11b96fb/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29fc708-fcdc-483c-92f4-02aed11b96fb/bin/utaipan-I9t0OCRTmS --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 3ecfb8b0fcef33da98f558e52c103bea043ca8b7f1be39029ddcf57b060bd03a --- 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-8393723 [2022-11-19 07:06:15,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:06:15,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:06:15,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:06:15,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:06:15,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:06:15,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:06:15,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:06:15,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:06:15,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:06:15,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:06:15,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:06:15,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:06:15,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:06:15,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:06:15,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:06:15,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:06:15,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:06:15,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:06:15,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:06:15,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:06:15,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:06:15,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:06:15,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:06:15,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:06:15,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:06:15,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:06:15,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:06:15,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:06:15,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:06:15,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:06:15,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:06:15,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:06:15,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:06:15,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:06:15,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:06:15,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:06:15,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:06:15,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:06:15,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:06:15,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:06:15,832 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29fc708-fcdc-483c-92f4-02aed11b96fb/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:06:15,863 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:06:15,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:06:15,864 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:06:15,864 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:06:15,865 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:06:15,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:06:15,866 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:06:15,866 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:06:15,866 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:06:15,867 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:06:15,868 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:06:15,868 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:06:15,868 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:06:15,868 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:06:15,869 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:06:15,869 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:06:15,869 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:06:15,869 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:06:15,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:06:15,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:06:15,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:06:15,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:06:15,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:06:15,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:06:15,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:06:15,872 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:06:15,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:06:15,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:06:15,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:06:15,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:06:15,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:06:15,873 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:06:15,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:06:15,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:06:15,874 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:06:15,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:06:15,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:06:15,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:06:15,875 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_e29fc708-fcdc-483c-92f4-02aed11b96fb/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29fc708-fcdc-483c-92f4-02aed11b96fb/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ecfb8b0fcef33da98f558e52c103bea043ca8b7f1be39029ddcf57b060bd03a [2022-11-19 07:06:16,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:06:16,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:06:16,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:06:16,257 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:06:16,259 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:06:16,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29fc708-fcdc-483c-92f4-02aed11b96fb/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2022-11-19 07:06:16,327 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29fc708-fcdc-483c-92f4-02aed11b96fb/bin/utaipan-I9t0OCRTmS/data/cf0f6c51c/15a06ece8c944239b1138642231cdb53/FLAG4f15163b9 [2022-11-19 07:06:17,234 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:06:17,235 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29fc708-fcdc-483c-92f4-02aed11b96fb/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2022-11-19 07:06:17,284 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29fc708-fcdc-483c-92f4-02aed11b96fb/bin/utaipan-I9t0OCRTmS/data/cf0f6c51c/15a06ece8c944239b1138642231cdb53/FLAG4f15163b9 [2022-11-19 07:06:17,668 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29fc708-fcdc-483c-92f4-02aed11b96fb/bin/utaipan-I9t0OCRTmS/data/cf0f6c51c/15a06ece8c944239b1138642231cdb53 [2022-11-19 07:06:17,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:06:17,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:06:17,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:06:17,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:06:17,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:06:17,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:06:17" (1/1) ... [2022-11-19 07:06:17,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1af660bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:17, skipping insertion in model container [2022-11-19 07:06:17,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:06:17" (1/1) ... [2022-11-19 07:06:17,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:06:17,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:06:19,789 WARN L234 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_e29fc708-fcdc-483c-92f4-02aed11b96fb/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i[290722,290735] [2022-11-19 07:06:19,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:06:19,948 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:06:20,482 WARN L234 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_e29fc708-fcdc-483c-92f4-02aed11b96fb/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i[290722,290735] [2022-11-19 07:06:20,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:06:20,693 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:06:20,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:20 WrapperNode [2022-11-19 07:06:20,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:06:20,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:06:20,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:06:20,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:06:20,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:20" (1/1) ... [2022-11-19 07:06:20,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:20" (1/1) ... [2022-11-19 07:06:21,022 INFO L138 Inliner]: procedures = 235, calls = 2270, calls flagged for inlining = 117, calls inlined = 113, statements flattened = 5126 [2022-11-19 07:06:21,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:06:21,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:06:21,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:06:21,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:06:21,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:20" (1/1) ... [2022-11-19 07:06:21,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:20" (1/1) ... [2022-11-19 07:06:21,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:20" (1/1) ... [2022-11-19 07:06:21,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:20" (1/1) ... [2022-11-19 07:06:21,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:20" (1/1) ... [2022-11-19 07:06:21,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:20" (1/1) ... [2022-11-19 07:06:21,387 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:20" (1/1) ... [2022-11-19 07:06:21,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:20" (1/1) ... [2022-11-19 07:06:21,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:06:21,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:06:21,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:06:21,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:06:21,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:20" (1/1) ... [2022-11-19 07:06:21,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:06:21,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29fc708-fcdc-483c-92f4-02aed11b96fb/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:06:21,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29fc708-fcdc-483c-92f4-02aed11b96fb/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:06:21,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29fc708-fcdc-483c-92f4-02aed11b96fb/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:06:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure smc_ioctl [2022-11-19 07:06:21,529 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_ioctl [2022-11-19 07:06:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-11-19 07:06:21,529 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-11-19 07:06:21,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:06:21,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:06:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure smc_hardware_send_packet [2022-11-19 07:06:21,530 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_hardware_send_packet [2022-11-19 07:06:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:06:21,530 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:06:21,530 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_detach [2022-11-19 07:06:21,530 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_detach [2022-11-19 07:06:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-11-19 07:06:21,531 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-11-19 07:06:21,531 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 07:06:21,531 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 07:06:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure mhz_3288_power [2022-11-19 07:06:21,532 INFO L138 BoogieDeclarations]: Found implementation of procedure mhz_3288_power [2022-11-19 07:06:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-19 07:06:21,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-19 07:06:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:06:21,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:06:21,532 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_request_io [2022-11-19 07:06:21,533 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_request_io [2022-11-19 07:06:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2022-11-19 07:06:21,533 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2022-11-19 07:06:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure osi_load_firmware [2022-11-19 07:06:21,533 INFO L138 BoogieDeclarations]: Found implementation of procedure osi_load_firmware [2022-11-19 07:06:21,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:06:21,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:06:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:06:21,534 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:06:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:06:21,534 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:06:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 07:06:21,534 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 07:06:21,534 INFO L130 BoogieDeclarations]: Found specification of procedure smc_set_xcvr [2022-11-19 07:06:21,534 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_set_xcvr [2022-11-19 07:06:21,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-11-19 07:06:21,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-11-19 07:06:21,535 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-19 07:06:21,535 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-19 07:06:21,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:06:21,535 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2022-11-19 07:06:21,535 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2022-11-19 07:06:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 07:06:21,536 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 07:06:21,536 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-11-19 07:06:21,537 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-11-19 07:06:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:06:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-19 07:06:21,539 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-19 07:06:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 07:06:21,539 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 07:06:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure mot_config [2022-11-19 07:06:21,539 INFO L138 BoogieDeclarations]: Found implementation of procedure mot_config [2022-11-19 07:06:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_resume [2022-11-19 07:06:21,540 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_resume [2022-11-19 07:06:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 07:06:21,540 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 07:06:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-19 07:06:21,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-19 07:06:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 07:06:21,541 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 07:06:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:06:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:06:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_suspend [2022-11-19 07:06:21,541 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_suspend [2022-11-19 07:06:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure check_sig [2022-11-19 07:06:21,542 INFO L138 BoogieDeclarations]: Found implementation of procedure check_sig [2022-11-19 07:06:21,542 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-19 07:06:21,542 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-19 07:06:21,543 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-11-19 07:06:21,543 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-11-19 07:06:21,543 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 07:06:21,543 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 07:06:21,543 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-19 07:06:21,543 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-19 07:06:21,544 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 07:06:21,544 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 07:06:21,544 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-19 07:06:21,544 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-19 07:06:21,544 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2022-11-19 07:06:21,545 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2022-11-19 07:06:21,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:06:21,545 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-19 07:06:21,545 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-19 07:06:21,545 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 07:06:21,546 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 07:06:21,546 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 07:06:21,546 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 07:06:21,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-19 07:06:21,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-19 07:06:21,548 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-11-19 07:06:21,548 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-11-19 07:06:21,548 INFO L130 BoogieDeclarations]: Found specification of procedure cvt_ascii_address [2022-11-19 07:06:21,548 INFO L138 BoogieDeclarations]: Found implementation of procedure cvt_ascii_address [2022-11-19 07:06:21,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:06:21,548 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev16 [2022-11-19 07:06:21,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev16 [2022-11-19 07:06:21,549 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_loop_tuple [2022-11-19 07:06:21,549 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_loop_tuple [2022-11-19 07:06:21,549 INFO L130 BoogieDeclarations]: Found specification of procedure smc91c92_release [2022-11-19 07:06:21,549 INFO L138 BoogieDeclarations]: Found implementation of procedure smc91c92_release [2022-11-19 07:06:21,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:06:21,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:06:21,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 07:06:21,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 07:06:21,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:06:21,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 07:06:21,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 07:06:21,554 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev8 [2022-11-19 07:06:21,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev8 [2022-11-19 07:06:21,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:06:21,554 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 07:06:21,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 07:06:21,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:06:21,558 INFO L130 BoogieDeclarations]: Found specification of procedure pcmcia_loop_config [2022-11-19 07:06:21,558 INFO L138 BoogieDeclarations]: Found implementation of procedure pcmcia_loop_config [2022-11-19 07:06:21,558 INFO L130 BoogieDeclarations]: Found specification of procedure s9k_config [2022-11-19 07:06:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure s9k_config [2022-11-19 07:06:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure smc_tx_timeout [2022-11-19 07:06:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_tx_timeout [2022-11-19 07:06:21,564 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-19 07:06:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-19 07:06:21,564 INFO L130 BoogieDeclarations]: Found specification of procedure smc_reset [2022-11-19 07:06:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure smc_reset [2022-11-19 07:06:21,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:06:21,564 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2022-11-19 07:06:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2022-11-19 07:06:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-19 07:06:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-19 07:06:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-19 07:06:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-19 07:06:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-19 07:06:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-19 07:06:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-19 07:06:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-19 07:06:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:06:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:06:22,395 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:06:22,402 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:06:23,800 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:06:30,936 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:06:32,206 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:06:32,206 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:06:32,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:06:32 BoogieIcfgContainer [2022-11-19 07:06:32,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:06:32,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:06:32,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:06:32,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:06:32,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:06:17" (1/3) ... [2022-11-19 07:06:32,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9614631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:06:32, skipping insertion in model container [2022-11-19 07:06:32,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:06:20" (2/3) ... [2022-11-19 07:06:32,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9614631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:06:32, skipping insertion in model container [2022-11-19 07:06:32,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:06:32" (3/3) ... [2022-11-19 07:06:32,225 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--smsc--smc91c92_cs.ko-entry_point.cil.out.i [2022-11-19 07:06:32,249 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:06:32,250 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:06:32,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:06:32,345 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;@525bcb28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:06:32,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:06:32,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 1159 states, 676 states have (on average 1.3387573964497042) internal successors, (905), 709 states have internal predecessors, (905), 418 states have call successors, (418), 64 states have call predecessors, (418), 63 states have return successors, (412), 405 states have call predecessors, (412), 412 states have call successors, (412) [2022-11-19 07:06:32,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-19 07:06:32,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:32,398 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:32,399 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:32,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:32,404 INFO L85 PathProgramCache]: Analyzing trace with hash 979333156, now seen corresponding path program 1 times [2022-11-19 07:06:32,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:06:32,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999617235] [2022-11-19 07:06:32,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:32,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:06:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:34,545 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-19 07:06:34,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:06:34,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999617235] [2022-11-19 07:06:34,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999617235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:34,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:34,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:06:34,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502403679] [2022-11-19 07:06:34,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:34,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:06:34,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:06:34,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:06:34,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:06:34,596 INFO L87 Difference]: Start difference. First operand has 1159 states, 676 states have (on average 1.3387573964497042) internal successors, (905), 709 states have internal predecessors, (905), 418 states have call successors, (418), 64 states have call predecessors, (418), 63 states have return successors, (412), 405 states have call predecessors, (412), 412 states have call successors, (412) Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-19 07:06:36,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:38,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:42,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:46,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:46,825 INFO L93 Difference]: Finished difference Result 4572 states and 6871 transitions. [2022-11-19 07:06:46,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:06:46,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 235 [2022-11-19 07:06:46,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:46,869 INFO L225 Difference]: With dead ends: 4572 [2022-11-19 07:06:46,870 INFO L226 Difference]: Without dead ends: 3396 [2022-11-19 07:06:46,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:06:46,972 INFO L413 NwaCegarLoop]: 2350 mSDtfsCounter, 4275 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 816 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4275 SdHoareTripleChecker+Valid, 4593 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 816 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:46,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4275 Valid, 4593 Invalid, 2206 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [816 Valid, 1389 Invalid, 1 Unknown, 0 Unchecked, 11.6s Time] [2022-11-19 07:06:47,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3396 states. [2022-11-19 07:06:47,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3396 to 3382. [2022-11-19 07:06:47,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3382 states, 1987 states have (on average 1.3251132360342224) internal successors, (2633), 2056 states have internal predecessors, (2633), 1212 states have call successors, (1212), 183 states have call predecessors, (1212), 182 states have return successors, (1211), 1192 states have call predecessors, (1211), 1211 states have call successors, (1211) [2022-11-19 07:06:47,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 5056 transitions. [2022-11-19 07:06:47,385 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 5056 transitions. Word has length 235 [2022-11-19 07:06:47,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:47,388 INFO L495 AbstractCegarLoop]: Abstraction has 3382 states and 5056 transitions. [2022-11-19 07:06:47,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-19 07:06:47,388 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 5056 transitions. [2022-11-19 07:06:47,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-19 07:06:47,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:47,415 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:47,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:06:47,416 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:47,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:47,417 INFO L85 PathProgramCache]: Analyzing trace with hash 764173738, now seen corresponding path program 1 times [2022-11-19 07:06:47,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:06:47,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814939119] [2022-11-19 07:06:47,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:47,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:06:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:48,490 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-19 07:06:48,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:06:48,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814939119] [2022-11-19 07:06:48,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814939119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:48,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:48,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:06:48,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426610824] [2022-11-19 07:06:48,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:48,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:06:48,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:06:48,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:06:48,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:06:48,500 INFO L87 Difference]: Start difference. First operand 3382 states and 5056 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-19 07:06:50,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:58,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:58,232 INFO L93 Difference]: Finished difference Result 13463 states and 20134 transitions. [2022-11-19 07:06:58,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:06:58,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 234 [2022-11-19 07:06:58,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:58,298 INFO L225 Difference]: With dead ends: 13463 [2022-11-19 07:06:58,298 INFO L226 Difference]: Without dead ends: 10100 [2022-11-19 07:06:58,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:06:58,315 INFO L413 NwaCegarLoop]: 2332 mSDtfsCounter, 4217 mSDsluCounter, 2209 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 810 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4217 SdHoareTripleChecker+Valid, 4541 SdHoareTripleChecker+Invalid, 2188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 810 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:58,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4217 Valid, 4541 Invalid, 2188 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [810 Valid, 1377 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2022-11-19 07:06:58,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10100 states. [2022-11-19 07:06:59,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10100 to 10088. [2022-11-19 07:06:59,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10088 states, 5937 states have (on average 1.3250800067374096) internal successors, (7867), 6134 states have internal predecessors, (7867), 3608 states have call successors, (3608), 543 states have call predecessors, (3608), 542 states have return successors, (3607), 3556 states have call predecessors, (3607), 3607 states have call successors, (3607) [2022-11-19 07:06:59,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10088 states to 10088 states and 15082 transitions. [2022-11-19 07:06:59,354 INFO L78 Accepts]: Start accepts. Automaton has 10088 states and 15082 transitions. Word has length 234 [2022-11-19 07:06:59,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:59,354 INFO L495 AbstractCegarLoop]: Abstraction has 10088 states and 15082 transitions. [2022-11-19 07:06:59,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-19 07:06:59,356 INFO L276 IsEmpty]: Start isEmpty. Operand 10088 states and 15082 transitions. [2022-11-19 07:06:59,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-19 07:06:59,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:59,375 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:59,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:06:59,376 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:59,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:59,386 INFO L85 PathProgramCache]: Analyzing trace with hash -999785678, now seen corresponding path program 1 times [2022-11-19 07:06:59,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:06:59,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082172889] [2022-11-19 07:06:59,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:59,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:06:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:00,443 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-19 07:07:00,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:00,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082172889] [2022-11-19 07:07:00,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082172889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:00,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:00,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:07:00,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628157046] [2022-11-19 07:07:00,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:00,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:07:00,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:00,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:07:00,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:07:00,452 INFO L87 Difference]: Start difference. First operand 10088 states and 15082 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-19 07:07:02,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:07:10,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:10,003 INFO L93 Difference]: Finished difference Result 40275 states and 60214 transitions. [2022-11-19 07:07:10,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:07:10,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 232 [2022-11-19 07:07:10,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:10,189 INFO L225 Difference]: With dead ends: 40275 [2022-11-19 07:07:10,189 INFO L226 Difference]: Without dead ends: 30206 [2022-11-19 07:07:10,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:07:10,249 INFO L413 NwaCegarLoop]: 2332 mSDtfsCounter, 3353 mSDsluCounter, 3424 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3353 SdHoareTripleChecker+Valid, 5756 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:10,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3353 Valid, 5756 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1518 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2022-11-19 07:07:10,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30206 states. [2022-11-19 07:07:12,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30206 to 30194. [2022-11-19 07:07:12,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30194 states, 17787 states have (on average 1.3242817788272334) internal successors, (23555), 18356 states have internal predecessors, (23555), 10784 states have call successors, (10784), 1623 states have call predecessors, (10784), 1622 states have return successors, (10783), 10648 states have call predecessors, (10783), 10783 states have call successors, (10783) [2022-11-19 07:07:12,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30194 states to 30194 states and 45122 transitions. [2022-11-19 07:07:12,903 INFO L78 Accepts]: Start accepts. Automaton has 30194 states and 45122 transitions. Word has length 232 [2022-11-19 07:07:12,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:12,904 INFO L495 AbstractCegarLoop]: Abstraction has 30194 states and 45122 transitions. [2022-11-19 07:07:12,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-19 07:07:12,904 INFO L276 IsEmpty]: Start isEmpty. Operand 30194 states and 45122 transitions. [2022-11-19 07:07:12,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-19 07:07:12,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:12,921 INFO L195 NwaCegarLoop]: trace histogram [11, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:12,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:07:12,921 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:12,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:12,922 INFO L85 PathProgramCache]: Analyzing trace with hash 915389740, now seen corresponding path program 1 times [2022-11-19 07:07:12,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:12,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413629099] [2022-11-19 07:07:12,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:12,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:13,845 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-19 07:07:13,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:13,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413629099] [2022-11-19 07:07:13,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413629099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:13,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:13,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:07:13,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498342119] [2022-11-19 07:07:13,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:13,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:07:13,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:13,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:07:13,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:07:13,848 INFO L87 Difference]: Start difference. First operand 30194 states and 45122 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-19 07:07:15,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:07:20,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:07:26,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:26,591 INFO L93 Difference]: Finished difference Result 116855 states and 174414 transitions. [2022-11-19 07:07:26,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:07:26,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 233 [2022-11-19 07:07:26,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:27,096 INFO L225 Difference]: With dead ends: 116855 [2022-11-19 07:07:27,096 INFO L226 Difference]: Without dead ends: 86680 [2022-11-19 07:07:27,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:07:27,231 INFO L413 NwaCegarLoop]: 2332 mSDtfsCounter, 3352 mSDsluCounter, 3473 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3352 SdHoareTripleChecker+Valid, 5805 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:27,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3352 Valid, 5805 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1522 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2022-11-19 07:07:27,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86680 states. [2022-11-19 07:07:32,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86680 to 86668. [2022-11-19 07:07:32,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86668 states, 51305 states have (on average 1.3264009355813273) internal successors, (68051), 52810 states have internal predecessors, (68051), 30596 states have call successors, (30596), 4767 states have call predecessors, (30596), 4766 states have return successors, (30595), 30276 states have call predecessors, (30595), 30595 states have call successors, (30595) [2022-11-19 07:07:33,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86668 states to 86668 states and 129242 transitions. [2022-11-19 07:07:33,764 INFO L78 Accepts]: Start accepts. Automaton has 86668 states and 129242 transitions. Word has length 233 [2022-11-19 07:07:33,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:33,766 INFO L495 AbstractCegarLoop]: Abstraction has 86668 states and 129242 transitions. [2022-11-19 07:07:33,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-19 07:07:33,767 INFO L276 IsEmpty]: Start isEmpty. Operand 86668 states and 129242 transitions. [2022-11-19 07:07:33,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-11-19 07:07:33,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:33,995 INFO L195 NwaCegarLoop]: trace histogram [28, 15, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:33,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:07:33,996 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:33,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:33,996 INFO L85 PathProgramCache]: Analyzing trace with hash -473051214, now seen corresponding path program 1 times [2022-11-19 07:07:33,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:33,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827527148] [2022-11-19 07:07:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:33,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1171 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1169 trivial. 0 not checked. [2022-11-19 07:07:35,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:35,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827527148] [2022-11-19 07:07:35,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827527148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:35,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:35,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:07:35,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353041039] [2022-11-19 07:07:35,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:35,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:07:35,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:35,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:07:35,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:35,018 INFO L87 Difference]: Start difference. First operand 86668 states and 129242 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2022-11-19 07:07:37,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:07:46,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:46,091 INFO L93 Difference]: Finished difference Result 241184 states and 358596 transitions. [2022-11-19 07:07:46,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:07:46,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) Word has length 432 [2022-11-19 07:07:46,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:47,106 INFO L225 Difference]: With dead ends: 241184 [2022-11-19 07:07:47,107 INFO L226 Difference]: Without dead ends: 154535 [2022-11-19 07:07:47,379 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 [2022-11-19 07:07:47,379 INFO L413 NwaCegarLoop]: 2146 mSDtfsCounter, 1334 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 3589 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:47,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 3589 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 499 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-11-19 07:07:47,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154535 states. [2022-11-19 07:07:56,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154535 to 154289. [2022-11-19 07:07:57,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154289 states, 90733 states have (on average 1.3175911741042399) internal successors, (119549), 93903 states have internal predecessors, (119549), 54753 states have call successors, (54753), 8884 states have call predecessors, (54753), 8802 states have return successors, (54752), 53709 states have call predecessors, (54752), 54752 states have call successors, (54752) [2022-11-19 07:07:58,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154289 states to 154289 states and 229054 transitions. [2022-11-19 07:07:58,448 INFO L78 Accepts]: Start accepts. Automaton has 154289 states and 229054 transitions. Word has length 432 [2022-11-19 07:07:58,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:58,449 INFO L495 AbstractCegarLoop]: Abstraction has 154289 states and 229054 transitions. [2022-11-19 07:07:58,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2022-11-19 07:07:58,449 INFO L276 IsEmpty]: Start isEmpty. Operand 154289 states and 229054 transitions. [2022-11-19 07:07:58,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2022-11-19 07:07:58,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:58,651 INFO L195 NwaCegarLoop]: trace histogram [29, 18, 9, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:58,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:07:58,651 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:58,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:58,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1020646877, now seen corresponding path program 1 times [2022-11-19 07:07:58,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:58,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148399668] [2022-11-19 07:07:58,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:58,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1459 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1454 trivial. 0 not checked. [2022-11-19 07:07:59,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:59,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148399668] [2022-11-19 07:07:59,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148399668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:59,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:59,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:07:59,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716941355] [2022-11-19 07:07:59,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:59,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:07:59,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:59,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:07:59,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:07:59,605 INFO L87 Difference]: Start difference. First operand 154289 states and 229054 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) [2022-11-19 07:08:02,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.52s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []