./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d70f8b-c415-4c06-b287-5da3555b3899/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d70f8b-c415-4c06-b287-5da3555b3899/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_24d70f8b-c415-4c06-b287-5da3555b3899/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d70f8b-c415-4c06-b287-5da3555b3899/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d70f8b-c415-4c06-b287-5da3555b3899/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_24d70f8b-c415-4c06-b287-5da3555b3899/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 4b829e0b1083ca135908ac8582697cf0831b43587b46e1b9cc42429c7a2c7866 --- 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 06:48:24,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:48:24,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:48:24,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:48:24,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:48:24,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:48:24,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:48:24,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:48:24,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:48:24,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:48:24,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:48:24,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:48:24,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:48:24,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:48:24,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:48:24,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:48:24,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:48:24,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:48:24,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:48:24,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:48:24,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:48:24,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:48:24,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:48:24,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:48:24,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:48:24,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:48:24,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:48:24,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:48:24,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:48:24,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:48:24,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:48:24,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:48:24,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:48:24,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:48:24,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:48:24,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:48:24,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:48:24,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:48:24,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:48:24,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:48:24,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:48:24,829 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d70f8b-c415-4c06-b287-5da3555b3899/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:48:24,852 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:48:24,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:48:24,853 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:48:24,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:48:24,854 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:48:24,855 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:48:24,855 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:48:24,855 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:48:24,856 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:48:24,856 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:48:24,856 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:48:24,857 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:48:24,857 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:48:24,857 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:48:24,858 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:48:24,858 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:48:24,858 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:48:24,859 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:48:24,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:48:24,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:48:24,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:48:24,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:48:24,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:48:24,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:48:24,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:48:24,862 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:48:24,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:48:24,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:48:24,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:48:24,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:48:24,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:48:24,864 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:48:24,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:48:24,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:48:24,865 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:48:24,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:48:24,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:48:24,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:48:24,866 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_24d70f8b-c415-4c06-b287-5da3555b3899/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d70f8b-c415-4c06-b287-5da3555b3899/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b829e0b1083ca135908ac8582697cf0831b43587b46e1b9cc42429c7a2c7866 [2022-11-19 06:48:25,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:48:25,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:48:25,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:48:25,197 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:48:25,199 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:48:25,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d70f8b-c415-4c06-b287-5da3555b3899/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2022-11-19 06:48:25,288 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d70f8b-c415-4c06-b287-5da3555b3899/bin/utaipan-I9t0OCRTmS/data/712716816/5708cb1a9d314e92aa87dbda0d6664a6/FLAGa08bd9109 [2022-11-19 06:48:26,346 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:48:26,347 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d70f8b-c415-4c06-b287-5da3555b3899/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2022-11-19 06:48:26,408 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d70f8b-c415-4c06-b287-5da3555b3899/bin/utaipan-I9t0OCRTmS/data/712716816/5708cb1a9d314e92aa87dbda0d6664a6/FLAGa08bd9109 [2022-11-19 06:48:26,694 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d70f8b-c415-4c06-b287-5da3555b3899/bin/utaipan-I9t0OCRTmS/data/712716816/5708cb1a9d314e92aa87dbda0d6664a6 [2022-11-19 06:48:26,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:48:26,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:48:26,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:48:26,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:48:26,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:48:26,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:48:26" (1/1) ... [2022-11-19 06:48:26,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a3b3c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:26, skipping insertion in model container [2022-11-19 06:48:26,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:48:26" (1/1) ... [2022-11-19 06:48:26,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:48:26,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:48:30,077 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_24d70f8b-c415-4c06-b287-5da3555b3899/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[378939,378952] [2022-11-19 06:48:30,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:48:30,434 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:48:31,191 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_24d70f8b-c415-4c06-b287-5da3555b3899/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i[378939,378952] [2022-11-19 06:48:31,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:48:31,465 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:48:31,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:31 WrapperNode [2022-11-19 06:48:31,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:48:31,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:48:31,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:48:31,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:48:31,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:31" (1/1) ... [2022-11-19 06:48:31,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:31" (1/1) ... [2022-11-19 06:48:31,827 INFO L138 Inliner]: procedures = 341, calls = 3956, calls flagged for inlining = 136, calls inlined = 92, statements flattened = 5417 [2022-11-19 06:48:31,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:48:31,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:48:31,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:48:31,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:48:31,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:31" (1/1) ... [2022-11-19 06:48:31,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:31" (1/1) ... [2022-11-19 06:48:31,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:31" (1/1) ... [2022-11-19 06:48:31,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:31" (1/1) ... [2022-11-19 06:48:32,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:31" (1/1) ... [2022-11-19 06:48:32,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:31" (1/1) ... [2022-11-19 06:48:32,281 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:31" (1/1) ... [2022-11-19 06:48:32,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:31" (1/1) ... [2022-11-19 06:48:32,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:48:32,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:48:32,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:48:32,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:48:32,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:31" (1/1) ... [2022-11-19 06:48:32,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:48:32,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d70f8b-c415-4c06-b287-5da3555b3899/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:48:32,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d70f8b-c415-4c06-b287-5da3555b3899/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:48:32,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24d70f8b-c415-4c06-b287-5da3555b3899/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:48:32,471 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_schedule_event [2022-11-19 06:48:32,471 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_schedule_event [2022-11-19 06:48:32,471 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freebcshw [2022-11-19 06:48:32,472 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freebcshw [2022-11-19 06:48:32,472 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-19 06:48:32,472 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-19 06:48:32,472 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_set_modem_ctrl [2022-11-19 06:48:32,473 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_set_modem_ctrl [2022-11-19 06:48:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-19 06:48:32,473 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-19 06:48:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_reinitbcshw [2022-11-19 06:48:32,474 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_reinitbcshw [2022-11-19 06:48:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 06:48:32,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 06:48:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 06:48:32,475 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 06:48:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2022-11-19 06:48:32,476 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2022-11-19 06:48:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_brkchars [2022-11-19 06:48:32,476 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_brkchars [2022-11-19 06:48:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_add_event [2022-11-19 06:48:32,477 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_add_event [2022-11-19 06:48:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_control_urb [2022-11-19 06:48:32,477 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_control_urb [2022-11-19 06:48:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-19 06:48:32,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-19 06:48:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 06:48:32,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 06:48:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_close_bchannel [2022-11-19 06:48:32,478 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_close_bchannel [2022-11-19 06:48:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_resume [2022-11-19 06:48:32,479 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_resume [2022-11-19 06:48:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_baud_rate [2022-11-19 06:48:32,479 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_baud_rate [2022-11-19 06:48:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure freeurbs [2022-11-19 06:48:32,480 INFO L138 BoogieDeclarations]: Found implementation of procedure freeurbs [2022-11-19 06:48:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_bchannel_down [2022-11-19 06:48:32,480 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_bchannel_down [2022-11-19 06:48:32,481 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2022-11-19 06:48:32,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2022-11-19 06:48:32,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 06:48:32,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 06:48:32,481 INFO L130 BoogieDeclarations]: Found specification of procedure start_cbsend [2022-11-19 06:48:32,482 INFO L138 BoogieDeclarations]: Found implementation of procedure start_cbsend [2022-11-19 06:48:32,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 06:48:32,483 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 06:48:32,483 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_dbg_buffer [2022-11-19 06:48:32,483 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_dbg_buffer [2022-11-19 06:48:32,484 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 06:48:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 06:48:32,486 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-19 06:48:32,486 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-19 06:48:32,487 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_set_line_ctrl [2022-11-19 06:48:32,488 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_set_line_ctrl [2022-11-19 06:48:32,489 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2022-11-19 06:48:32,489 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2022-11-19 06:48:32,489 INFO L130 BoogieDeclarations]: Found specification of procedure usb_queue_reset_device [2022-11-19 06:48:32,489 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_queue_reset_device [2022-11-19 06:48:32,490 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 06:48:32,491 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 06:48:32,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2022-11-19 06:48:32,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2022-11-19 06:48:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_write_room [2022-11-19 06:48:32,492 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_write_room [2022-11-19 06:48:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_4 [2022-11-19 06:48:32,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_4 [2022-11-19 06:48:32,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_3 [2022-11-19 06:48:32,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_3 [2022-11-19 06:48:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:48:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_5 [2022-11-19 06:48:32,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_5 [2022-11-19 06:48:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 06:48:32,495 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 06:48:32,495 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-11-19 06:48:32,496 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-11-19 06:48:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure check_pending [2022-11-19 06:48:32,496 INFO L138 BoogieDeclarations]: Found implementation of procedure check_pending [2022-11-19 06:48:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 06:48:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:48:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure error_hangup [2022-11-19 06:48:32,497 INFO L138 BoogieDeclarations]: Found implementation of procedure error_hangup [2022-11-19 06:48:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freedriver [2022-11-19 06:48:32,498 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freedriver [2022-11-19 06:48:32,498 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_isoc_send_skb [2022-11-19 06:48:32,498 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_isoc_send_skb [2022-11-19 06:48:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_chars_in_buffer [2022-11-19 06:48:32,499 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_chars_in_buffer [2022-11-19 06:48:32,499 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 06:48:32,500 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 06:48:32,501 INFO L130 BoogieDeclarations]: Found specification of procedure req_submit [2022-11-19 06:48:32,501 INFO L138 BoogieDeclarations]: Found implementation of procedure req_submit [2022-11-19 06:48:32,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:48:32,503 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_1 [2022-11-19 06:48:32,503 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_1 [2022-11-19 06:48:32,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:48:32,503 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2022-11-19 06:48:32,503 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2022-11-19 06:48:32,504 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-19 06:48:32,504 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-19 06:48:32,505 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 06:48:32,505 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 06:48:32,505 INFO L130 BoogieDeclarations]: Found specification of procedure complete_cb [2022-11-19 06:48:32,505 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_cb [2022-11-19 06:48:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-19 06:48:32,506 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-19 06:48:32,506 INFO L130 BoogieDeclarations]: Found specification of procedure stopurbs [2022-11-19 06:48:32,506 INFO L138 BoogieDeclarations]: Found implementation of procedure stopurbs [2022-11-19 06:48:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freecshw [2022-11-19 06:48:32,507 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freecshw [2022-11-19 06:48:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 06:48:32,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 06:48:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_3 [2022-11-19 06:48:32,512 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_3 [2022-11-19 06:48:32,512 INFO L130 BoogieDeclarations]: Found specification of procedure int_in_work [2022-11-19 06:48:32,513 INFO L138 BoogieDeclarations]: Found implementation of procedure int_in_work [2022-11-19 06:48:32,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:48:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure dump_urb [2022-11-19 06:48:32,517 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_urb [2022-11-19 06:48:32,517 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-19 06:48:32,517 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-19 06:48:32,523 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-19 06:48:32,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-19 06:48:32,524 INFO L130 BoogieDeclarations]: Found specification of procedure atwrite_submit [2022-11-19 06:48:32,524 INFO L138 BoogieDeclarations]: Found implementation of procedure atwrite_submit [2022-11-19 06:48:32,524 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_3 [2022-11-19 06:48:32,525 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_3 [2022-11-19 06:48:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-19 06:48:32,525 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-19 06:48:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-19 06:48:32,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-19 06:48:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2022-11-19 06:48:32,526 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2022-11-19 06:48:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initcshw [2022-11-19 06:48:32,526 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initcshw [2022-11-19 06:48:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 06:48:32,527 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 06:48:32,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:48:32,527 INFO L130 BoogieDeclarations]: Found specification of procedure get_usb_rcmsg [2022-11-19 06:48:32,527 INFO L138 BoogieDeclarations]: Found implementation of procedure get_usb_rcmsg [2022-11-19 06:48:32,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 06:48:32,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 06:48:32,528 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initbcshw [2022-11-19 06:48:32,528 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initbcshw [2022-11-19 06:48:32,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 06:48:32,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 06:48:32,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:48:32,529 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 06:48:32,529 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 06:48:32,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 06:48:32,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 06:48:32,530 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_3 [2022-11-19 06:48:32,530 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_3 [2022-11-19 06:48:32,530 INFO L130 BoogieDeclarations]: Found specification of procedure error_reset [2022-11-19 06:48:32,530 INFO L138 BoogieDeclarations]: Found implementation of procedure error_reset [2022-11-19 06:48:32,530 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_isoc_input [2022-11-19 06:48:32,531 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_isoc_input [2022-11-19 06:48:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freecs [2022-11-19 06:48:32,531 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freecs [2022-11-19 06:48:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:48:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_suspend [2022-11-19 06:48:32,532 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_suspend [2022-11-19 06:48:32,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:48:32,532 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_3 [2022-11-19 06:48:32,532 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_3 [2022-11-19 06:48:32,532 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-19 06:48:32,533 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-19 06:48:32,533 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-11-19 06:48:32,533 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-11-19 06:48:32,533 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-19 06:48:32,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-19 06:48:32,533 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_disconnect [2022-11-19 06:48:32,534 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_disconnect [2022-11-19 06:48:32,534 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-19 06:48:32,534 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-19 06:48:32,534 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-19 06:48:32,534 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-19 06:48:32,535 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-11-19 06:48:32,535 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-11-19 06:48:32,535 INFO L130 BoogieDeclarations]: Found specification of procedure update_basstate [2022-11-19 06:48:32,535 INFO L138 BoogieDeclarations]: Found implementation of procedure update_basstate [2022-11-19 06:48:32,535 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-11-19 06:48:32,536 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-11-19 06:48:32,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:48:32,536 INFO L130 BoogieDeclarations]: Found specification of procedure atread_submit [2022-11-19 06:48:32,536 INFO L138 BoogieDeclarations]: Found implementation of procedure atread_submit [2022-11-19 06:48:32,537 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_init_bchannel [2022-11-19 06:48:32,537 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_init_bchannel [2022-11-19 06:48:32,537 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-11-19 06:48:32,537 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-11-19 06:48:32,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:48:32,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:48:33,529 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:48:33,534 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:48:34,041 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 06:48:42,796 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:48:44,443 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:48:44,443 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 06:48:44,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:48:44 BoogieIcfgContainer [2022-11-19 06:48:44,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:48:44,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:48:44,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:48:44,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:48:44,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:48:26" (1/3) ... [2022-11-19 06:48:44,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24fb88b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:48:44, skipping insertion in model container [2022-11-19 06:48:44,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:31" (2/3) ... [2022-11-19 06:48:44,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24fb88b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:48:44, skipping insertion in model container [2022-11-19 06:48:44,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:48:44" (3/3) ... [2022-11-19 06:48:44,467 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--gigaset--bas_gigaset.ko-entry_point.cil.out.i [2022-11-19 06:48:44,490 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:48:44,491 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:48:44,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:48:44,638 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;@313b935c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:48:44,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:48:44,649 INFO L276 IsEmpty]: Start isEmpty. Operand has 1237 states, 751 states have (on average 1.3501997336884155) internal successors, (1014), 795 states have internal predecessors, (1014), 396 states have call successors, (396), 89 states have call predecessors, (396), 88 states have return successors, (387), 368 states have call predecessors, (387), 387 states have call successors, (387) [2022-11-19 06:48:44,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-19 06:48:44,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:44,689 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:44,690 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:48:44,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:44,698 INFO L85 PathProgramCache]: Analyzing trace with hash -513617638, now seen corresponding path program 1 times [2022-11-19 06:48:44,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:44,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572306156] [2022-11-19 06:48:44,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:44,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-19 06:48:46,198 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:46,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572306156] [2022-11-19 06:48:46,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572306156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:46,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:46,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:48:46,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098364298] [2022-11-19 06:48:46,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:46,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:48:46,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:46,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:48:46,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:48:46,259 INFO L87 Difference]: Start difference. First operand has 1237 states, 751 states have (on average 1.3501997336884155) internal successors, (1014), 795 states have internal predecessors, (1014), 396 states have call successors, (396), 89 states have call predecessors, (396), 88 states have return successors, (387), 368 states have call predecessors, (387), 387 states have call successors, (387) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 06:48:50,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:50,119 INFO L93 Difference]: Finished difference Result 3391 states and 5052 transitions. [2022-11-19 06:48:50,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:48:50,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 125 [2022-11-19 06:48:50,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:50,161 INFO L225 Difference]: With dead ends: 3391 [2022-11-19 06:48:50,161 INFO L226 Difference]: Without dead ends: 2094 [2022-11-19 06:48:50,181 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 06:48:50,184 INFO L413 NwaCegarLoop]: 1895 mSDtfsCounter, 1395 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 3434 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:48:50,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1395 Valid, 3434 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-19 06:48:50,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2022-11-19 06:48:50,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 2091. [2022-11-19 06:48:50,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2091 states, 1289 states have (on average 1.34833204034135) internal successors, (1738), 1355 states have internal predecessors, (1738), 645 states have call successors, (645), 157 states have call predecessors, (645), 156 states have return successors, (644), 606 states have call predecessors, (644), 644 states have call successors, (644) [2022-11-19 06:48:50,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 3027 transitions. [2022-11-19 06:48:50,495 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 3027 transitions. Word has length 125 [2022-11-19 06:48:50,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:50,496 INFO L495 AbstractCegarLoop]: Abstraction has 2091 states and 3027 transitions. [2022-11-19 06:48:50,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 06:48:50,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 3027 transitions. [2022-11-19 06:48:50,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-19 06:48:50,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:50,510 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:50,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:48:50,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:48:50,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:50,512 INFO L85 PathProgramCache]: Analyzing trace with hash -491095559, now seen corresponding path program 1 times [2022-11-19 06:48:50,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:50,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571256103] [2022-11-19 06:48:50,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:50,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:51,567 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-19 06:48:51,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:51,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571256103] [2022-11-19 06:48:51,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571256103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:51,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:51,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:48:51,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413450463] [2022-11-19 06:48:51,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:51,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:48:51,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:51,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:48:51,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:48:51,573 INFO L87 Difference]: Start difference. First operand 2091 states and 3027 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-19 06:48:52,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:48:55,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:48:55,529 INFO L93 Difference]: Finished difference Result 5314 states and 7676 transitions. [2022-11-19 06:48:55,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:48:55,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 126 [2022-11-19 06:48:55,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:48:55,556 INFO L225 Difference]: With dead ends: 5314 [2022-11-19 06:48:55,556 INFO L226 Difference]: Without dead ends: 3248 [2022-11-19 06:48:55,568 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 06:48:55,569 INFO L413 NwaCegarLoop]: 1751 mSDtfsCounter, 1060 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:48:55,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 3153 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-19 06:48:55,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2022-11-19 06:48:55,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 3245. [2022-11-19 06:48:55,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3245 states, 2004 states have (on average 1.3498003992015968) internal successors, (2705), 2128 states have internal predecessors, (2705), 988 states have call successors, (988), 253 states have call predecessors, (988), 252 states have return successors, (987), 913 states have call predecessors, (987), 987 states have call successors, (987) [2022-11-19 06:48:55,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3245 states to 3245 states and 4680 transitions. [2022-11-19 06:48:55,754 INFO L78 Accepts]: Start accepts. Automaton has 3245 states and 4680 transitions. Word has length 126 [2022-11-19 06:48:55,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:48:55,755 INFO L495 AbstractCegarLoop]: Abstraction has 3245 states and 4680 transitions. [2022-11-19 06:48:55,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-19 06:48:55,755 INFO L276 IsEmpty]: Start isEmpty. Operand 3245 states and 4680 transitions. [2022-11-19 06:48:55,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-19 06:48:55,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:48:55,758 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:48:55,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:48:55,758 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:48:55,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:48:55,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1638079408, now seen corresponding path program 1 times [2022-11-19 06:48:55,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:48:55,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384004501] [2022-11-19 06:48:55,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:48:55,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:48:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:48:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-19 06:48:56,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:48:56,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384004501] [2022-11-19 06:48:56,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384004501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:48:56,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:48:56,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:48:56,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462114530] [2022-11-19 06:48:56,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:48:56,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:48:56,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:48:56,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:48:56,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:48:56,526 INFO L87 Difference]: Start difference. First operand 3245 states and 4680 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 06:48:58,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:00,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:00,433 INFO L93 Difference]: Finished difference Result 3556 states and 5046 transitions. [2022-11-19 06:49:00,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:49:00,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2022-11-19 06:49:00,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:00,458 INFO L225 Difference]: With dead ends: 3556 [2022-11-19 06:49:00,458 INFO L226 Difference]: Without dead ends: 3553 [2022-11-19 06:49:00,461 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 06:49:00,462 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 1470 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:00,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1877 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-19 06:49:00,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2022-11-19 06:49:00,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 3509. [2022-11-19 06:49:00,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 2160 states have (on average 1.3412037037037037) internal successors, (2897), 2290 states have internal predecessors, (2897), 1038 states have call successors, (1038), 319 states have call predecessors, (1038), 310 states have return successors, (1039), 953 states have call predecessors, (1039), 1037 states have call successors, (1039) [2022-11-19 06:49:00,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 4974 transitions. [2022-11-19 06:49:00,682 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 4974 transitions. Word has length 129 [2022-11-19 06:49:00,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:00,683 INFO L495 AbstractCegarLoop]: Abstraction has 3509 states and 4974 transitions. [2022-11-19 06:49:00,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 06:49:00,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 4974 transitions. [2022-11-19 06:49:00,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-19 06:49:00,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:00,688 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:00,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:49:00,689 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:00,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:00,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1948356886, now seen corresponding path program 1 times [2022-11-19 06:49:00,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:00,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31403334] [2022-11-19 06:49:00,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:00,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:01,771 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-19 06:49:01,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:01,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31403334] [2022-11-19 06:49:01,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31403334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:01,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:01,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:49:01,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601788218] [2022-11-19 06:49:01,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:01,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:49:01,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:01,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:49:01,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:49:01,776 INFO L87 Difference]: Start difference. First operand 3509 states and 4974 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 06:49:03,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:11,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:11,856 INFO L93 Difference]: Finished difference Result 13904 states and 20030 transitions. [2022-11-19 06:49:11,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:49:11,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 159 [2022-11-19 06:49:11,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:11,934 INFO L225 Difference]: With dead ends: 13904 [2022-11-19 06:49:11,934 INFO L226 Difference]: Without dead ends: 10431 [2022-11-19 06:49:11,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:49:11,955 INFO L413 NwaCegarLoop]: 2275 mSDtfsCounter, 3366 mSDsluCounter, 3717 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3366 SdHoareTripleChecker+Valid, 5992 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:11,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3366 Valid, 5992 Invalid, 1539 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 1532 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2022-11-19 06:49:11,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10431 states. [2022-11-19 06:49:12,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10431 to 10389. [2022-11-19 06:49:12,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10389 states, 6424 states have (on average 1.3419987546699876) internal successors, (8621), 6786 states have internal predecessors, (8621), 3058 states have call successors, (3058), 931 states have call predecessors, (3058), 906 states have return successors, (3351), 2813 states have call predecessors, (3351), 3057 states have call successors, (3351) [2022-11-19 06:49:12,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10389 states to 10389 states and 15030 transitions. [2022-11-19 06:49:12,786 INFO L78 Accepts]: Start accepts. Automaton has 10389 states and 15030 transitions. Word has length 159 [2022-11-19 06:49:12,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:12,790 INFO L495 AbstractCegarLoop]: Abstraction has 10389 states and 15030 transitions. [2022-11-19 06:49:12,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 06:49:12,793 INFO L276 IsEmpty]: Start isEmpty. Operand 10389 states and 15030 transitions. [2022-11-19 06:49:12,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-19 06:49:12,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:12,799 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:12,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:49:12,799 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:12,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:12,801 INFO L85 PathProgramCache]: Analyzing trace with hash 477685154, now seen corresponding path program 1 times [2022-11-19 06:49:12,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:12,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022887920] [2022-11-19 06:49:12,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:12,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:13,766 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-19 06:49:13,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:13,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022887920] [2022-11-19 06:49:13,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022887920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:13,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:13,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:49:13,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376517664] [2022-11-19 06:49:13,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:13,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:49:13,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:13,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:49:13,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:49:13,769 INFO L87 Difference]: Start difference. First operand 10389 states and 15030 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 06:49:15,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:20,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:20,098 INFO L93 Difference]: Finished difference Result 20732 states and 29983 transitions. [2022-11-19 06:49:20,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:49:20,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 162 [2022-11-19 06:49:20,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:20,190 INFO L225 Difference]: With dead ends: 20732 [2022-11-19 06:49:20,190 INFO L226 Difference]: Without dead ends: 10379 [2022-11-19 06:49:20,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:49:20,251 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 2675 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 730 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2675 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 730 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:20,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2675 Valid, 1544 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [730 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-19 06:49:20,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10379 states. [2022-11-19 06:49:21,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10379 to 10379. [2022-11-19 06:49:21,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10379 states, 6425 states have (on average 1.3382101167315175) internal successors, (8598), 6775 states have internal predecessors, (8598), 3046 states have call successors, (3046), 932 states have call predecessors, (3046), 907 states have return successors, (3331), 2813 states have call predecessors, (3331), 3045 states have call successors, (3331) [2022-11-19 06:49:21,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10379 states to 10379 states and 14975 transitions. [2022-11-19 06:49:21,321 INFO L78 Accepts]: Start accepts. Automaton has 10379 states and 14975 transitions. Word has length 162 [2022-11-19 06:49:21,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:21,322 INFO L495 AbstractCegarLoop]: Abstraction has 10379 states and 14975 transitions. [2022-11-19 06:49:21,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 06:49:21,322 INFO L276 IsEmpty]: Start isEmpty. Operand 10379 states and 14975 transitions. [2022-11-19 06:49:21,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-19 06:49:21,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:21,327 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:21,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:49:21,327 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:21,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:21,328 INFO L85 PathProgramCache]: Analyzing trace with hash -714604438, now seen corresponding path program 1 times [2022-11-19 06:49:21,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:21,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062305718] [2022-11-19 06:49:21,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:21,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:22,262 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-19 06:49:22,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:22,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062305718] [2022-11-19 06:49:22,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062305718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:22,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:22,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:49:22,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429251025] [2022-11-19 06:49:22,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:22,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:49:22,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:22,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:49:22,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:49:22,266 INFO L87 Difference]: Start difference. First operand 10379 states and 14975 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 06:49:23,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:26,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:26,217 INFO L93 Difference]: Finished difference Result 20708 states and 29871 transitions. [2022-11-19 06:49:26,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:49:26,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 164 [2022-11-19 06:49:26,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:26,288 INFO L225 Difference]: With dead ends: 20708 [2022-11-19 06:49:26,289 INFO L226 Difference]: Without dead ends: 10367 [2022-11-19 06:49:26,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:49:26,339 INFO L413 NwaCegarLoop]: 1528 mSDtfsCounter, 1730 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:26,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 1541 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-19 06:49:26,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10367 states. [2022-11-19 06:49:27,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10367 to 10367. [2022-11-19 06:49:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10367 states, 6425 states have (on average 1.3363424124513619) internal successors, (8586), 6763 states have internal predecessors, (8586), 3034 states have call successors, (3034), 932 states have call predecessors, (3034), 907 states have return successors, (3311), 2813 states have call predecessors, (3311), 3033 states have call successors, (3311) [2022-11-19 06:49:27,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10367 states to 10367 states and 14931 transitions. [2022-11-19 06:49:27,218 INFO L78 Accepts]: Start accepts. Automaton has 10367 states and 14931 transitions. Word has length 164 [2022-11-19 06:49:27,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:27,219 INFO L495 AbstractCegarLoop]: Abstraction has 10367 states and 14931 transitions. [2022-11-19 06:49:27,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 06:49:27,219 INFO L276 IsEmpty]: Start isEmpty. Operand 10367 states and 14931 transitions. [2022-11-19 06:49:27,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-19 06:49:27,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:27,225 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:27,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:49:27,225 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:27,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:27,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1577928278, now seen corresponding path program 1 times [2022-11-19 06:49:27,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:27,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9432286] [2022-11-19 06:49:27,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:27,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:28,169 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-19 06:49:28,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:28,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9432286] [2022-11-19 06:49:28,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9432286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:28,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:28,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:49:28,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021813655] [2022-11-19 06:49:28,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:28,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:49:28,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:28,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:49:28,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:49:28,172 INFO L87 Difference]: Start difference. First operand 10367 states and 14931 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 06:49:30,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:32,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:32,465 INFO L93 Difference]: Finished difference Result 20684 states and 29783 transitions. [2022-11-19 06:49:32,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:49:32,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 163 [2022-11-19 06:49:32,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:32,536 INFO L225 Difference]: With dead ends: 20684 [2022-11-19 06:49:32,536 INFO L226 Difference]: Without dead ends: 10355 [2022-11-19 06:49:32,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:49:32,575 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 1682 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:32,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1682 Valid, 1603 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 215 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-11-19 06:49:32,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10355 states. [2022-11-19 06:49:33,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10355 to 10355. [2022-11-19 06:49:33,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10355 states, 6425 states have (on average 1.3344747081712063) internal successors, (8574), 6751 states have internal predecessors, (8574), 3022 states have call successors, (3022), 932 states have call predecessors, (3022), 907 states have return successors, (3291), 2813 states have call predecessors, (3291), 3021 states have call successors, (3291) [2022-11-19 06:49:33,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10355 states to 10355 states and 14887 transitions. [2022-11-19 06:49:33,439 INFO L78 Accepts]: Start accepts. Automaton has 10355 states and 14887 transitions. Word has length 163 [2022-11-19 06:49:33,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:33,440 INFO L495 AbstractCegarLoop]: Abstraction has 10355 states and 14887 transitions. [2022-11-19 06:49:33,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 06:49:33,441 INFO L276 IsEmpty]: Start isEmpty. Operand 10355 states and 14887 transitions. [2022-11-19 06:49:33,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-19 06:49:33,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:33,445 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:33,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 06:49:33,446 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:33,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:33,447 INFO L85 PathProgramCache]: Analyzing trace with hash -473363330, now seen corresponding path program 1 times [2022-11-19 06:49:33,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:33,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430778674] [2022-11-19 06:49:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:33,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:34,471 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-19 06:49:34,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:34,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430778674] [2022-11-19 06:49:34,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430778674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:34,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:34,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:49:34,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465077809] [2022-11-19 06:49:34,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:34,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:49:34,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:34,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:49:34,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:49:34,474 INFO L87 Difference]: Start difference. First operand 10355 states and 14887 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 06:49:36,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:44,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:49:44,576 INFO L93 Difference]: Finished difference Result 41266 states and 60543 transitions. [2022-11-19 06:49:44,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:49:44,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 161 [2022-11-19 06:49:44,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:49:44,770 INFO L225 Difference]: With dead ends: 41266 [2022-11-19 06:49:44,770 INFO L226 Difference]: Without dead ends: 30949 [2022-11-19 06:49:44,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:49:44,820 INFO L413 NwaCegarLoop]: 2252 mSDtfsCounter, 3344 mSDsluCounter, 3677 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3344 SdHoareTripleChecker+Valid, 5929 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:49:44,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3344 Valid, 5929 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1521 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2022-11-19 06:49:44,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30949 states. [2022-11-19 06:49:47,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30949 to 30859. [2022-11-19 06:49:47,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30859 states, 19169 states have (on average 1.3320465334654912) internal successors, (25534), 20103 states have internal predecessors, (25534), 8994 states have call successors, (8994), 2768 states have call predecessors, (8994), 2695 states have return successors, (10987), 8393 states have call predecessors, (10987), 8993 states have call successors, (10987) [2022-11-19 06:49:47,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30859 states to 30859 states and 45515 transitions. [2022-11-19 06:49:47,836 INFO L78 Accepts]: Start accepts. Automaton has 30859 states and 45515 transitions. Word has length 161 [2022-11-19 06:49:47,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:49:47,851 INFO L495 AbstractCegarLoop]: Abstraction has 30859 states and 45515 transitions. [2022-11-19 06:49:47,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 06:49:47,852 INFO L276 IsEmpty]: Start isEmpty. Operand 30859 states and 45515 transitions. [2022-11-19 06:49:47,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-19 06:49:47,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:47,856 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:47,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 06:49:47,857 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:47,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:47,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1756288989, now seen corresponding path program 1 times [2022-11-19 06:49:47,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:47,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800943571] [2022-11-19 06:49:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:47,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:49,029 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-19 06:49:49,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:49,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800943571] [2022-11-19 06:49:49,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800943571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:49,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:49,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:49:49,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011758457] [2022-11-19 06:49:49,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:49,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:49:49,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:49,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:49:49,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:49:49,034 INFO L87 Difference]: Start difference. First operand 30859 states and 45515 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 06:50:02,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:02,151 INFO L93 Difference]: Finished difference Result 123234 states and 185127 transitions. [2022-11-19 06:50:02,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:50:02,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 160 [2022-11-19 06:50:02,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:02,968 INFO L225 Difference]: With dead ends: 123234 [2022-11-19 06:50:02,968 INFO L226 Difference]: Without dead ends: 92413 [2022-11-19 06:50:03,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:50:03,161 INFO L413 NwaCegarLoop]: 2252 mSDtfsCounter, 4315 mSDsluCounter, 2337 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 727 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4315 SdHoareTripleChecker+Valid, 4589 SdHoareTripleChecker+Invalid, 2071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 727 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:03,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4315 Valid, 4589 Invalid, 2071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [727 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-19 06:50:03,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92413 states. [2022-11-19 06:50:10,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92413 to 92371. [2022-11-19 06:50:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92371 states, 57449 states have (on average 1.3308151577921288) internal successors, (76454), 60159 states have internal predecessors, (76454), 26862 states have call successors, (26862), 8276 states have call predecessors, (26862), 8059 states have return successors, (36195), 25133 states have call predecessors, (36195), 26861 states have call successors, (36195) [2022-11-19 06:50:11,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92371 states to 92371 states and 139511 transitions. [2022-11-19 06:50:11,076 INFO L78 Accepts]: Start accepts. Automaton has 92371 states and 139511 transitions. Word has length 160 [2022-11-19 06:50:11,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:11,076 INFO L495 AbstractCegarLoop]: Abstraction has 92371 states and 139511 transitions. [2022-11-19 06:50:11,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 06:50:11,077 INFO L276 IsEmpty]: Start isEmpty. Operand 92371 states and 139511 transitions. [2022-11-19 06:50:11,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-19 06:50:11,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:11,081 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:50:11,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 06:50:11,082 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:50:11,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:11,094 INFO L85 PathProgramCache]: Analyzing trace with hash -974927109, now seen corresponding path program 1 times [2022-11-19 06:50:11,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:11,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62447001] [2022-11-19 06:50:11,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:11,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:12,634 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-19 06:50:12,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:12,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62447001] [2022-11-19 06:50:12,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62447001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:12,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:50:12,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:50:12,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672530545] [2022-11-19 06:50:12,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:12,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:50:12,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:12,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:50:12,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:50:12,639 INFO L87 Difference]: Start difference. First operand 92371 states and 139511 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 06:50:13,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:15,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []