./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-32_7a-drivers--hwmon--w83781d.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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27855f4a-f8cd-440c-b010-33992802db69/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27855f4a-f8cd-440c-b010-33992802db69/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_27855f4a-f8cd-440c-b010-33992802db69/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27855f4a-f8cd-440c-b010-33992802db69/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--w83781d.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27855f4a-f8cd-440c-b010-33992802db69/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_27855f4a-f8cd-440c-b010-33992802db69/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 0564b8be4162feecc69c55a6b0b3eda68686a764b41f4f7494c14a4ffed0dc25 --- 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 07:58:54,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:58:54,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:58:54,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:58:54,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:58:54,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:58:54,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:58:54,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:58:54,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:58:54,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:58:54,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:58:54,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:58:54,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:58:54,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:58:54,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:58:54,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:58:54,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:58:54,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:58:54,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:58:54,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:58:54,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:58:54,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:58:54,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:58:54,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:58:54,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:58:54,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:58:54,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:58:54,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:58:54,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:58:54,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:58:54,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:58:54,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:58:54,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:58:54,782 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:58:54,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:58:54,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:58:54,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:58:54,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:58:54,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:58:54,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:58:54,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:58:54,789 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27855f4a-f8cd-440c-b010-33992802db69/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:58:54,816 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:58:54,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:58:54,817 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:58:54,818 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:58:54,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:58:54,819 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:58:54,819 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:58:54,819 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:58:54,820 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:58:54,820 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:58:54,820 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:58:54,821 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:58:54,821 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:58:54,821 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:58:54,822 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:58:54,822 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:58:54,822 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:58:54,823 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:58:54,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:58:54,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:58:54,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:58:54,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:58:54,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:58:54,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:58:54,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:58:54,825 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:58:54,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:58:54,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:58:54,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:58:54,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:58:54,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:58:54,827 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:58:54,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:58:54,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:58:54,828 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:58:54,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:58:54,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:58:54,829 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:58:54,829 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_27855f4a-f8cd-440c-b010-33992802db69/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27855f4a-f8cd-440c-b010-33992802db69/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0564b8be4162feecc69c55a6b0b3eda68686a764b41f4f7494c14a4ffed0dc25 [2022-11-19 07:58:55,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:58:55,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:58:55,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:58:55,170 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:58:55,171 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:58:55,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27855f4a-f8cd-440c-b010-33992802db69/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--w83781d.ko-entry_point.cil.out.i [2022-11-19 07:58:55,254 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27855f4a-f8cd-440c-b010-33992802db69/bin/utaipan-I9t0OCRTmS/data/87b1bd7c0/87d4b98455434badaf8a230929d35b30/FLAGaa671766e [2022-11-19 07:58:56,282 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:58:56,283 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27855f4a-f8cd-440c-b010-33992802db69/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--w83781d.ko-entry_point.cil.out.i [2022-11-19 07:58:56,339 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27855f4a-f8cd-440c-b010-33992802db69/bin/utaipan-I9t0OCRTmS/data/87b1bd7c0/87d4b98455434badaf8a230929d35b30/FLAGaa671766e [2022-11-19 07:58:56,632 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27855f4a-f8cd-440c-b010-33992802db69/bin/utaipan-I9t0OCRTmS/data/87b1bd7c0/87d4b98455434badaf8a230929d35b30 [2022-11-19 07:58:56,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:58:56,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:58:56,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:58:56,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:58:56,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:58:56,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:56" (1/1) ... [2022-11-19 07:58:56,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f3ff085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:56, skipping insertion in model container [2022-11-19 07:58:56,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:56" (1/1) ... [2022-11-19 07:58:56,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:58:56,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:58:58,955 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_27855f4a-f8cd-440c-b010-33992802db69/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--w83781d.ko-entry_point.cil.out.i[291343,291356] [2022-11-19 07:58:59,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:58:59,282 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:58:59,767 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_27855f4a-f8cd-440c-b010-33992802db69/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--w83781d.ko-entry_point.cil.out.i[291343,291356] [2022-11-19 07:58:59,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:59:00,215 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:59:00,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:00 WrapperNode [2022-11-19 07:59:00,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:59:00,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:59:00,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:59:00,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:59:00,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:00" (1/1) ... [2022-11-19 07:59:00,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:00" (1/1) ... [2022-11-19 07:59:00,743 INFO L138 Inliner]: procedures = 284, calls = 3878, calls flagged for inlining = 144, calls inlined = 140, statements flattened = 10151 [2022-11-19 07:59:00,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:59:00,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:59:00,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:59:00,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:59:00,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:00" (1/1) ... [2022-11-19 07:59:00,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:00" (1/1) ... [2022-11-19 07:59:00,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:00" (1/1) ... [2022-11-19 07:59:00,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:00" (1/1) ... [2022-11-19 07:59:00,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:00" (1/1) ... [2022-11-19 07:59:01,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:00" (1/1) ... [2022-11-19 07:59:01,067 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:00" (1/1) ... [2022-11-19 07:59:01,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:00" (1/1) ... [2022-11-19 07:59:01,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:59:01,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:59:01,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:59:01,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:59:01,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:00" (1/1) ... [2022-11-19 07:59:01,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:59:01,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27855f4a-f8cd-440c-b010-33992802db69/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:59:01,203 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27855f4a-f8cd-440c-b010-33992802db69/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:59:01,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27855f4a-f8cd-440c-b010-33992802db69/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:59:01,253 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_read_value [2022-11-19 07:59:01,253 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_read_value [2022-11-19 07:59:01,253 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_max [2022-11-19 07:59:01,253 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_max [2022-11-19 07:59:01,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:59:01,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:59:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:59:01,355 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:59:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_detect [2022-11-19 07:59:01,355 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_detect [2022-11-19 07:59:01,355 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_TO_REG [2022-11-19 07:59:01,356 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_TO_REG [2022-11-19 07:59:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure store_beep [2022-11-19 07:59:01,356 INFO L138 BoogieDeclarations]: Found implementation of procedure store_beep [2022-11-19 07:59:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:59:01,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:59:01,356 INFO L130 BoogieDeclarations]: Found specification of procedure store_pwm [2022-11-19 07:59:01,356 INFO L138 BoogieDeclarations]: Found implementation of procedure store_pwm [2022-11-19 07:59:01,357 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_min [2022-11-19 07:59:01,357 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_min [2022-11-19 07:59:01,357 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_div [2022-11-19 07:59:01,357 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_div [2022-11-19 07:59:01,357 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_FROM_REG [2022-11-19 07:59:01,357 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_FROM_REG [2022-11-19 07:59:01,357 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 07:59:01,357 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 07:59:01,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:59:01,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:59:01,358 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-19 07:59:01,358 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-19 07:59:01,358 INFO L130 BoogieDeclarations]: Found specification of procedure show_sensor [2022-11-19 07:59:01,358 INFO L138 BoogieDeclarations]: Found implementation of procedure show_sensor [2022-11-19 07:59:01,358 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:59:01,359 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:59:01,359 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-19 07:59:01,359 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-19 07:59:01,359 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_min [2022-11-19 07:59:01,359 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_min [2022-11-19 07:59:01,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:59:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max_hyst [2022-11-19 07:59:01,360 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max_hyst [2022-11-19 07:59:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure show_alarm [2022-11-19 07:59:01,360 INFO L138 BoogieDeclarations]: Found implementation of procedure show_alarm [2022-11-19 07:59:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-11-19 07:59:01,360 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-11-19 07:59:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_isa_unregister [2022-11-19 07:59:01,360 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_isa_unregister [2022-11-19 07:59:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure show_in [2022-11-19 07:59:01,361 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in [2022-11-19 07:59:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:59:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 07:59:01,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 07:59:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure show_beep [2022-11-19 07:59:01,361 INFO L138 BoogieDeclarations]: Found implementation of procedure show_beep [2022-11-19 07:59:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtol [2022-11-19 07:59:01,362 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtol [2022-11-19 07:59:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:59:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:59:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-11-19 07:59:01,362 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-11-19 07:59:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-19 07:59:01,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-19 07:59:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure show_pwm [2022-11-19 07:59:01,371 INFO L138 BoogieDeclarations]: Found implementation of procedure show_pwm [2022-11-19 07:59:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure FAN_FROM_REG [2022-11-19 07:59:01,372 INFO L138 BoogieDeclarations]: Found implementation of procedure FAN_FROM_REG [2022-11-19 07:59:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-19 07:59:01,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-19 07:59:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure store_sensor [2022-11-19 07:59:01,372 INFO L138 BoogieDeclarations]: Found implementation of procedure store_sensor [2022-11-19 07:59:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_update_device [2022-11-19 07:59:01,373 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_update_device [2022-11-19 07:59:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_remove_files [2022-11-19 07:59:01,374 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_remove_files [2022-11-19 07:59:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan [2022-11-19 07:59:01,374 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan [2022-11-19 07:59:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-19 07:59:01,374 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-19 07:59:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure store_in_max [2022-11-19 07:59:01,374 INFO L138 BoogieDeclarations]: Found implementation of procedure store_in_max [2022-11-19 07:59:01,375 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_word_swapped [2022-11-19 07:59:01,375 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_word_swapped [2022-11-19 07:59:01,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:59:01,375 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-11-19 07:59:01,376 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-11-19 07:59:01,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_w83781d_data [2022-11-19 07:59:01,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_w83781d_data [2022-11-19 07:59:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:59:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-19 07:59:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-19 07:59:01,379 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-11-19 07:59:01,379 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-11-19 07:59:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_word_swapped [2022-11-19 07:59:01,380 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_word_swapped [2022-11-19 07:59:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure show_fan_div [2022-11-19 07:59:01,380 INFO L138 BoogieDeclarations]: Found implementation of procedure show_fan_div [2022-11-19 07:59:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure LM75_TEMP_TO_REG [2022-11-19 07:59:01,381 INFO L138 BoogieDeclarations]: Found implementation of procedure LM75_TEMP_TO_REG [2022-11-19 07:59:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:59:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2022-11-19 07:59:01,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_w83781d_data [2022-11-19 07:59:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp [2022-11-19 07:59:01,381 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp [2022-11-19 07:59:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:59:01,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:59:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_w83781d_data [2022-11-19 07:59:01,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_w83781d_data [2022-11-19 07:59:01,382 INFO L130 BoogieDeclarations]: Found specification of procedure store_temp_max [2022-11-19 07:59:01,383 INFO L138 BoogieDeclarations]: Found implementation of procedure store_temp_max [2022-11-19 07:59:01,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 07:59:01,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 07:59:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure w83781d_write_value [2022-11-19 07:59:01,388 INFO L138 BoogieDeclarations]: Found implementation of procedure w83781d_write_value [2022-11-19 07:59:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:59:01,388 INFO L130 BoogieDeclarations]: Found specification of procedure show_in_min [2022-11-19 07:59:01,389 INFO L138 BoogieDeclarations]: Found implementation of procedure show_in_min [2022-11-19 07:59:01,390 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 07:59:01,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 07:59:01,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:59:01,392 INFO L130 BoogieDeclarations]: Found specification of procedure store_fan_min [2022-11-19 07:59:01,396 INFO L138 BoogieDeclarations]: Found implementation of procedure store_fan_min [2022-11-19 07:59:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:59:01,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2022-11-19 07:59:01,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_w83781d_data [2022-11-19 07:59:01,397 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max [2022-11-19 07:59:01,397 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max [2022-11-19 07:59:01,397 INFO L130 BoogieDeclarations]: Found specification of procedure show_temp_max_hyst [2022-11-19 07:59:01,397 INFO L138 BoogieDeclarations]: Found implementation of procedure show_temp_max_hyst [2022-11-19 07:59:01,397 INFO L130 BoogieDeclarations]: Found specification of procedure kstrtoul [2022-11-19 07:59:01,397 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrtoul [2022-11-19 07:59:01,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:59:01,397 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-11-19 07:59:01,398 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-11-19 07:59:01,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:59:01,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:59:01,398 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 07:59:01,398 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 07:59:02,650 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:59:02,653 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:59:03,147 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:01:37,738 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:01:39,147 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:01:39,147 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 08:01:39,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:39 BoogieIcfgContainer [2022-11-19 08:01:39,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:01:39,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:01:39,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:01:39,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:01:39,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:58:56" (1/3) ... [2022-11-19 08:01:39,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b6e6fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:39, skipping insertion in model container [2022-11-19 08:01:39,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:00" (2/3) ... [2022-11-19 08:01:39,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61b6e6fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:01:39, skipping insertion in model container [2022-11-19 08:01:39,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:01:39" (3/3) ... [2022-11-19 08:01:39,170 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--w83781d.ko-entry_point.cil.out.i [2022-11-19 08:01:39,194 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:01:39,194 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:01:39,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:01:39,339 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;@5c1f1687, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:01:39,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:01:39,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 2608 states, 1656 states have (on average 1.4233091787439613) internal successors, (2357), 1757 states have internal predecessors, (2357), 889 states have call successors, (889), 62 states have call predecessors, (889), 61 states have return successors, (798), 798 states have call predecessors, (798), 798 states have call successors, (798) [2022-11-19 08:01:39,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2820 [2022-11-19 08:01:39,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:39,528 INFO L195 NwaCegarLoop]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:39,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:39,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:39,536 INFO L85 PathProgramCache]: Analyzing trace with hash -844650017, now seen corresponding path program 1 times [2022-11-19 08:01:39,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:01:39,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475932667] [2022-11-19 08:01:39,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:39,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:01:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:51,123 INFO L134 CoverageAnalysis]: Checked inductivity of 224070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224070 trivial. 0 not checked. [2022-11-19 08:01:51,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:01:51,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475932667] [2022-11-19 08:01:51,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475932667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:51,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:51,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:01:51,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011054369] [2022-11-19 08:01:51,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:51,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:01:51,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:01:51,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:01:51,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:01:51,205 INFO L87 Difference]: Start difference. First operand has 2608 states, 1656 states have (on average 1.4233091787439613) internal successors, (2357), 1757 states have internal predecessors, (2357), 889 states have call successors, (889), 62 states have call predecessors, (889), 61 states have return successors, (798), 798 states have call predecessors, (798), 798 states have call successors, (798) Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-19 08:01:53,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:01:55,864 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 [] [2022-11-19 08:01:57,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:57,188 INFO L93 Difference]: Finished difference Result 6742 states and 11060 transitions. [2022-11-19 08:01:57,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:01:57,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) Word has length 2819 [2022-11-19 08:01:57,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:57,326 INFO L225 Difference]: With dead ends: 6742 [2022-11-19 08:01:57,328 INFO L226 Difference]: Without dead ends: 4484 [2022-11-19 08:01:57,368 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 08:01:57,373 INFO L413 NwaCegarLoop]: 4393 mSDtfsCounter, 3217 mSDsluCounter, 3861 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3217 SdHoareTripleChecker+Valid, 8254 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:57,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3217 Valid, 8254 Invalid, 343 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 340 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2022-11-19 08:01:57,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4484 states. [2022-11-19 08:01:58,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4484 to 4467. [2022-11-19 08:01:58,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4467 states, 3026 states have (on average 1.3995373430270985) internal successors, (4235), 3037 states have internal predecessors, (4235), 1321 states have call successors, (1321), 120 states have call predecessors, (1321), 119 states have return successors, (1313), 1311 states have call predecessors, (1313), 1313 states have call successors, (1313) [2022-11-19 08:01:58,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4467 states to 4467 states and 6869 transitions. [2022-11-19 08:01:58,186 INFO L78 Accepts]: Start accepts. Automaton has 4467 states and 6869 transitions. Word has length 2819 [2022-11-19 08:01:58,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:58,194 INFO L495 AbstractCegarLoop]: Abstraction has 4467 states and 6869 transitions. [2022-11-19 08:01:58,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-19 08:01:58,196 INFO L276 IsEmpty]: Start isEmpty. Operand 4467 states and 6869 transitions. [2022-11-19 08:01:58,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2821 [2022-11-19 08:01:58,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:58,645 INFO L195 NwaCegarLoop]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:58,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:01:58,645 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:58,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:58,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2034399510, now seen corresponding path program 1 times [2022-11-19 08:01:58,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:01:58,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780758933] [2022-11-19 08:01:58,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:58,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:07,180 INFO L134 CoverageAnalysis]: Checked inductivity of 224070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224070 trivial. 0 not checked. [2022-11-19 08:02:07,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:07,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780758933] [2022-11-19 08:02:07,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780758933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:07,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:07,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:02:07,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346718387] [2022-11-19 08:02:07,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:07,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:02:07,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:07,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:02:07,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:07,195 INFO L87 Difference]: Start difference. First operand 4467 states and 6869 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-19 08:02:09,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:02:10,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:10,970 INFO L93 Difference]: Finished difference Result 12317 states and 18985 transitions. [2022-11-19 08:02:10,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:02:10,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) Word has length 2820 [2022-11-19 08:02:10,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:11,044 INFO L225 Difference]: With dead ends: 12317 [2022-11-19 08:02:11,045 INFO L226 Difference]: Without dead ends: 8386 [2022-11-19 08:02:11,082 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 08:02:11,083 INFO L413 NwaCegarLoop]: 4218 mSDtfsCounter, 3034 mSDsluCounter, 3677 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3034 SdHoareTripleChecker+Valid, 7895 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:02:11,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3034 Valid, 7895 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 340 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-11-19 08:02:11,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8386 states. [2022-11-19 08:02:11,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8386 to 8369. [2022-11-19 08:02:11,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8369 states, 5765 states have (on average 1.417692974848222) internal successors, (8173), 5782 states have internal predecessors, (8173), 2366 states have call successors, (2366), 238 states have call predecessors, (2366), 237 states have return successors, (2358), 2352 states have call predecessors, (2358), 2358 states have call successors, (2358) [2022-11-19 08:02:12,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8369 states to 8369 states and 12897 transitions. [2022-11-19 08:02:12,031 INFO L78 Accepts]: Start accepts. Automaton has 8369 states and 12897 transitions. Word has length 2820 [2022-11-19 08:02:12,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:12,035 INFO L495 AbstractCegarLoop]: Abstraction has 8369 states and 12897 transitions. [2022-11-19 08:02:12,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-19 08:02:12,039 INFO L276 IsEmpty]: Start isEmpty. Operand 8369 states and 12897 transitions. [2022-11-19 08:02:12,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2824 [2022-11-19 08:02:12,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:12,114 INFO L195 NwaCegarLoop]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:02:12,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:02:12,115 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:02:12,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:12,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1134732021, now seen corresponding path program 1 times [2022-11-19 08:02:12,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:12,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754484723] [2022-11-19 08:02:12,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:12,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 224070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224070 trivial. 0 not checked. [2022-11-19 08:02:18,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:18,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754484723] [2022-11-19 08:02:18,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754484723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:18,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:18,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:02:18,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947075373] [2022-11-19 08:02:18,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:18,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:02:18,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:18,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:02:18,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:18,389 INFO L87 Difference]: Start difference. First operand 8369 states and 12897 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-19 08:02:20,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:02:22,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:22,373 INFO L93 Difference]: Finished difference Result 23966 states and 36978 transitions. [2022-11-19 08:02:22,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:02:22,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) Word has length 2823 [2022-11-19 08:02:22,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:22,526 INFO L225 Difference]: With dead ends: 23966 [2022-11-19 08:02:22,526 INFO L226 Difference]: Without dead ends: 16133 [2022-11-19 08:02:22,590 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 08:02:22,593 INFO L413 NwaCegarLoop]: 4222 mSDtfsCounter, 3013 mSDsluCounter, 3674 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3013 SdHoareTripleChecker+Valid, 7896 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:02:22,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3013 Valid, 7896 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 343 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-11-19 08:02:22,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16133 states. [2022-11-19 08:02:23,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16133 to 16113. [2022-11-19 08:02:23,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16113 states, 11205 states have (on average 1.4276662204373047) internal successors, (15997), 11234 states have internal predecessors, (15997), 4434 states have call successors, (4434), 474 states have call predecessors, (4434), 473 states have return successors, (4426), 4412 states have call predecessors, (4426), 4426 states have call successors, (4426) [2022-11-19 08:02:23,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16113 states to 16113 states and 24857 transitions. [2022-11-19 08:02:23,891 INFO L78 Accepts]: Start accepts. Automaton has 16113 states and 24857 transitions. Word has length 2823 [2022-11-19 08:02:23,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:23,895 INFO L495 AbstractCegarLoop]: Abstraction has 16113 states and 24857 transitions. [2022-11-19 08:02:23,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-19 08:02:23,896 INFO L276 IsEmpty]: Start isEmpty. Operand 16113 states and 24857 transitions. [2022-11-19 08:02:23,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2823 [2022-11-19 08:02:23,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:23,972 INFO L195 NwaCegarLoop]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:02:23,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:02:23,972 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:02:23,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:23,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1294176942, now seen corresponding path program 1 times [2022-11-19 08:02:23,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:23,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890246408] [2022-11-19 08:02:23,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:23,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:30,289 INFO L134 CoverageAnalysis]: Checked inductivity of 224070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224070 trivial. 0 not checked. [2022-11-19 08:02:30,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:30,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890246408] [2022-11-19 08:02:30,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890246408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:30,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:30,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:02:30,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695904700] [2022-11-19 08:02:30,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:30,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:02:30,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:30,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:02:30,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:30,295 INFO L87 Difference]: Start difference. First operand 16113 states and 24857 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-19 08:02:32,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:02:34,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:34,711 INFO L93 Difference]: Finished difference Result 47174 states and 72818 transitions. [2022-11-19 08:02:34,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:02:34,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) Word has length 2822 [2022-11-19 08:02:34,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:34,904 INFO L225 Difference]: With dead ends: 47174 [2022-11-19 08:02:34,904 INFO L226 Difference]: Without dead ends: 31597 [2022-11-19 08:02:34,999 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 08:02:35,002 INFO L413 NwaCegarLoop]: 4239 mSDtfsCounter, 3020 mSDsluCounter, 3674 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3020 SdHoareTripleChecker+Valid, 7913 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:02:35,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3020 Valid, 7913 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 343 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-11-19 08:02:35,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31597 states. [2022-11-19 08:02:37,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31597 to 31577. [2022-11-19 08:02:37,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31577 states, 22061 states have (on average 1.4324373328498254) internal successors, (31601), 22114 states have internal predecessors, (31601), 8570 states have call successors, (8570), 946 states have call predecessors, (8570), 945 states have return successors, (8562), 8532 states have call predecessors, (8562), 8562 states have call successors, (8562) [2022-11-19 08:02:37,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31577 states to 31577 states and 48733 transitions. [2022-11-19 08:02:37,425 INFO L78 Accepts]: Start accepts. Automaton has 31577 states and 48733 transitions. Word has length 2822 [2022-11-19 08:02:37,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:37,430 INFO L495 AbstractCegarLoop]: Abstraction has 31577 states and 48733 transitions. [2022-11-19 08:02:37,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-19 08:02:37,430 INFO L276 IsEmpty]: Start isEmpty. Operand 31577 states and 48733 transitions. [2022-11-19 08:02:37,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2826 [2022-11-19 08:02:37,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:37,504 INFO L195 NwaCegarLoop]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:02:37,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:02:37,505 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:02:37,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:37,506 INFO L85 PathProgramCache]: Analyzing trace with hash 2092351981, now seen corresponding path program 1 times [2022-11-19 08:02:37,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:37,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519441030] [2022-11-19 08:02:37,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:37,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:02:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 224070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224070 trivial. 0 not checked. [2022-11-19 08:02:43,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:02:43,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519441030] [2022-11-19 08:02:43,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519441030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:02:43,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:02:43,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:02:43,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706665080] [2022-11-19 08:02:43,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:02:43,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:02:43,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:02:43,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:02:43,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:02:43,033 INFO L87 Difference]: Start difference. First operand 31577 states and 48733 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-19 08:02:45,180 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 [] [2022-11-19 08:02:48,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:02:48,225 INFO L93 Difference]: Finished difference Result 93402 states and 144186 transitions. [2022-11-19 08:02:48,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:02:48,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) Word has length 2825 [2022-11-19 08:02:48,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:02:48,711 INFO L225 Difference]: With dead ends: 93402 [2022-11-19 08:02:48,711 INFO L226 Difference]: Without dead ends: 62361 [2022-11-19 08:02:48,875 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 08:02:48,877 INFO L413 NwaCegarLoop]: 4250 mSDtfsCounter, 3005 mSDsluCounter, 3674 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3005 SdHoareTripleChecker+Valid, 7924 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:02:48,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3005 Valid, 7924 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 343 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-19 08:02:48,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62361 states. [2022-11-19 08:02:53,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62361 to 62329. [2022-11-19 08:02:53,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62329 states, 43661 states have (on average 1.4350793614438515) internal successors, (62657), 43762 states have internal predecessors, (62657), 16778 states have call successors, (16778), 1890 states have call predecessors, (16778), 1889 states have return successors, (16770), 16708 states have call predecessors, (16770), 16770 states have call successors, (16770) [2022-11-19 08:02:53,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62329 states to 62329 states and 96205 transitions. [2022-11-19 08:02:53,571 INFO L78 Accepts]: Start accepts. Automaton has 62329 states and 96205 transitions. Word has length 2825 [2022-11-19 08:02:53,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:02:53,576 INFO L495 AbstractCegarLoop]: Abstraction has 62329 states and 96205 transitions. [2022-11-19 08:02:53,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-19 08:02:53,576 INFO L276 IsEmpty]: Start isEmpty. Operand 62329 states and 96205 transitions. [2022-11-19 08:02:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2824 [2022-11-19 08:02:53,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:02:53,650 INFO L195 NwaCegarLoop]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:02:53,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:02:53,651 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:02:53,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:02:53,652 INFO L85 PathProgramCache]: Analyzing trace with hash 364837390, now seen corresponding path program 1 times [2022-11-19 08:02:53,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:02:53,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784720057] [2022-11-19 08:02:53,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:02:53,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:02:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:03:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 224070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224070 trivial. 0 not checked. [2022-11-19 08:03:00,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:03:00,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784720057] [2022-11-19 08:03:00,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784720057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:03:00,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:03:00,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:03:00,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793901341] [2022-11-19 08:03:00,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:03:00,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:03:00,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:03:00,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:03:00,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:03:00,302 INFO L87 Difference]: Start difference. First operand 62329 states and 96205 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) [2022-11-19 08:03:02,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:03:07,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:03:07,710 INFO L93 Difference]: Finished difference Result 185682 states and 286658 transitions. [2022-11-19 08:03:07,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:03:07,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 2 states have call successors, (273), 2 states have call predecessors, (273), 1 states have return successors, (269), 2 states have call predecessors, (269), 2 states have call successors, (269) Word has length 2823 [2022-11-19 08:03:07,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted.