./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--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70812a35-b93f-41fd-8906-4e0cf64b7cba/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70812a35-b93f-41fd-8906-4e0cf64b7cba/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70812a35-b93f-41fd-8906-4e0cf64b7cba/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70812a35-b93f-41fd-8906-4e0cf64b7cba/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70812a35-b93f-41fd-8906-4e0cf64b7cba/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70812a35-b93f-41fd-8906-4e0cf64b7cba/bin/utaipan-Q6hlc19bkW --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 f0e55ca795fc0b7479008c7c7ace6ad96366c87862ace8719a39598b92db6b60 --- 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-4e7fbc6 [2022-11-23 16:03:56,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:03:56,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:03:56,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:03:56,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:03:56,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:03:56,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:03:56,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:03:56,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:03:56,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:03:56,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:03:56,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:03:56,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:03:56,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:03:56,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:03:56,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:03:56,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:03:56,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:03:56,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:03:56,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:03:56,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:03:56,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:03:56,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:03:56,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:03:56,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:03:56,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:03:56,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:03:56,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:03:56,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:03:56,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:03:56,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:03:56,951 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:03:56,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:03:56,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:03:56,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:03:56,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:03:56,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:03:56,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:03:56,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:03:56,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:03:56,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:03:56,974 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70812a35-b93f-41fd-8906-4e0cf64b7cba/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 16:03:57,014 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:03:57,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:03:57,015 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:03:57,016 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:03:57,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:03:57,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:03:57,017 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:03:57,017 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:03:57,017 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:03:57,018 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:03:57,019 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:03:57,019 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:03:57,020 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:03:57,020 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:03:57,020 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:03:57,020 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:03:57,020 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:03:57,020 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:03:57,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:03:57,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:03:57,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:03:57,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:03:57,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:03:57,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:03:57,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:03:57,022 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:03:57,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:03:57,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:03:57,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:03:57,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:03:57,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:03:57,024 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:03:57,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:03:57,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:03:57,025 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:03:57,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:03:57,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:03:57,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:03:57,025 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_70812a35-b93f-41fd-8906-4e0cf64b7cba/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70812a35-b93f-41fd-8906-4e0cf64b7cba/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0e55ca795fc0b7479008c7c7ace6ad96366c87862ace8719a39598b92db6b60 [2022-11-23 16:03:57,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:03:57,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:03:57,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:03:57,420 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:03:57,421 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:03:57,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70812a35-b93f-41fd-8906-4e0cf64b7cba/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i [2022-11-23 16:04:00,616 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:04:01,313 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:04:01,315 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70812a35-b93f-41fd-8906-4e0cf64b7cba/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i [2022-11-23 16:04:01,375 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70812a35-b93f-41fd-8906-4e0cf64b7cba/bin/utaipan-Q6hlc19bkW/data/d82f61025/1077a4bb8ec44c58962ef1e1cf9d81e9/FLAG8a837215a [2022-11-23 16:04:01,390 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70812a35-b93f-41fd-8906-4e0cf64b7cba/bin/utaipan-Q6hlc19bkW/data/d82f61025/1077a4bb8ec44c58962ef1e1cf9d81e9 [2022-11-23 16:04:01,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:04:01,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:04:01,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:04:01,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:04:01,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:04:01,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:04:01" (1/1) ... [2022-11-23 16:04:01,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc01409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:01, skipping insertion in model container [2022-11-23 16:04:01,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:04:01" (1/1) ... [2022-11-23 16:04:01,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:04:01,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:04:04,977 WARN L237 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_70812a35-b93f-41fd-8906-4e0cf64b7cba/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i[373305,373318] [2022-11-23 16:04:05,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:04:05,107 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:04:05,776 WARN L237 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_70812a35-b93f-41fd-8906-4e0cf64b7cba/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i[373305,373318] [2022-11-23 16:04:05,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:04:05,933 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:04:05,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:05 WrapperNode [2022-11-23 16:04:05,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:04:05,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:04:05,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:04:05,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:04:05,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:05" (1/1) ... [2022-11-23 16:04:06,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:05" (1/1) ... [2022-11-23 16:04:06,373 INFO L138 Inliner]: procedures = 451, calls = 3529, calls flagged for inlining = 214, calls inlined = 200, statements flattened = 8909 [2022-11-23 16:04:06,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:04:06,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:04:06,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:04:06,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:04:06,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:05" (1/1) ... [2022-11-23 16:04:06,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:05" (1/1) ... [2022-11-23 16:04:06,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:05" (1/1) ... [2022-11-23 16:04:06,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:05" (1/1) ... [2022-11-23 16:04:06,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:05" (1/1) ... [2022-11-23 16:04:06,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:05" (1/1) ... [2022-11-23 16:04:06,815 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:05" (1/1) ... [2022-11-23 16:04:06,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:05" (1/1) ... [2022-11-23 16:04:06,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:04:06,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:04:06,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:04:06,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:04:06,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:05" (1/1) ... [2022-11-23 16:04:06,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:04:06,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70812a35-b93f-41fd-8906-4e0cf64b7cba/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:04:06,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70812a35-b93f-41fd-8906-4e0cf64b7cba/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:04:06,993 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_hw_get_capacity [2022-11-23 16:04:06,994 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_hw_get_capacity [2022-11-23 16:04:06,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 16:04:06,994 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 16:04:06,994 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_hw_ioctl [2022-11-23 16:04:06,994 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_hw_ioctl [2022-11-23 16:04:06,995 INFO L130 BoogieDeclarations]: Found specification of procedure __first_node [2022-11-23 16:04:06,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __first_node [2022-11-23 16:04:06,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-23 16:04:06,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-23 16:04:06,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 16:04:06,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 16:04:06,996 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-11-23 16:04:06,996 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-11-23 16:04:06,996 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_stop_hw_queues [2022-11-23 16:04:06,996 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_stop_hw_queues [2022-11-23 16:04:06,996 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 16:04:06,997 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 16:04:06,997 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 16:04:06,997 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 16:04:06,997 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 16:04:06,997 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 16:04:06,998 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_deinit_port [2022-11-23 16:04:06,998 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_deinit_port [2022-11-23 16:04:06,998 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_exec_internal_command [2022-11-23 16:04:06,998 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_exec_internal_command [2022-11-23 16:04:06,998 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-23 16:04:06,999 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-23 16:04:06,999 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_read_log_page [2022-11-23 16:04:06,999 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_read_log_page [2022-11-23 16:04:06,999 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-23 16:04:06,999 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-23 16:04:06,999 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-23 16:04:06,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70812a35-b93f-41fd-8906-4e0cf64b7cba/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:04:07,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 16:04:07,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 16:04:07,001 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 16:04:07,001 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 16:04:07,001 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-23 16:04:07,001 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-23 16:04:07,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 16:04:07,002 INFO L130 BoogieDeclarations]: Found specification of procedure ata_swap_string [2022-11-23 16:04:07,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ata_swap_string [2022-11-23 16:04:07,002 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-23 16:04:07,002 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-23 16:04:07,003 INFO L130 BoogieDeclarations]: Found specification of procedure __cpu_to_node [2022-11-23 16:04:07,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __cpu_to_node [2022-11-23 16:04:07,003 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_bit [2022-11-23 16:04:07,003 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_bit [2022-11-23 16:04:07,003 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-23 16:04:07,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-23 16:04:07,004 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2022-11-23 16:04:07,005 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2022-11-23 16:04:07,005 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 16:04:07,005 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 16:04:07,005 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2022-11-23 16:04:07,005 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2022-11-23 16:04:07,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 16:04:07,006 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_free_tag_set [2022-11-23 16:04:07,006 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_free_tag_set [2022-11-23 16:04:07,006 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_hw_exit [2022-11-23 16:04:07,006 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_hw_exit [2022-11-23 16:04:07,006 INFO L130 BoogieDeclarations]: Found specification of procedure get_least_used_cpu_on_node [2022-11-23 16:04:07,007 INFO L138 BoogieDeclarations]: Found implementation of procedure get_least_used_cpu_on_node [2022-11-23 16:04:07,007 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 16:04:07,007 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 16:04:07,007 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-23 16:04:07,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-23 16:04:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 16:04:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 16:04:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 16:04:07,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 16:04:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 16:04:07,009 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 16:04:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_first [2022-11-23 16:04:07,010 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_first [2022-11-23 16:04:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbfx [2022-11-23 16:04:07,011 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbfx [2022-11-23 16:04:07,011 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_get_next_rr_node [2022-11-23 16:04:07,011 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_get_next_rr_node [2022-11-23 16:04:07,011 INFO L130 BoogieDeclarations]: Found specification of procedure hba_setup [2022-11-23 16:04:07,012 INFO L138 BoogieDeclarations]: Found implementation of procedure hba_setup [2022-11-23 16:04:07,012 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_enable_fis [2022-11-23 16:04:07,012 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_enable_fis [2022-11-23 16:04:07,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-23 16:04:07,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-23 16:04:07,013 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2022-11-23 16:04:07,013 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2022-11-23 16:04:07,013 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2022-11-23 16:04:07,014 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2022-11-23 16:04:07,014 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-23 16:04:07,014 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-23 16:04:07,014 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2022-11-23 16:04:07,015 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2022-11-23 16:04:07,015 INFO L130 BoogieDeclarations]: Found specification of procedure pcim_iounmap_regions [2022-11-23 16:04:07,015 INFO L138 BoogieDeclarations]: Found implementation of procedure pcim_iounmap_regions [2022-11-23 16:04:07,016 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc_node [2022-11-23 16:04:07,016 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc_node [2022-11-23 16:04:07,016 INFO L130 BoogieDeclarations]: Found specification of procedure __pcibus_to_node [2022-11-23 16:04:07,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __pcibus_to_node [2022-11-23 16:04:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 16:04:07,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 16:04:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 16:04:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_start_port [2022-11-23 16:04:07,017 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_start_port [2022-11-23 16:04:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 16:04:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 16:04:07,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 16:04:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 16:04:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2022-11-23 16:04:07,019 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2022-11-23 16:04:07,020 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 16:04:07,023 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_hw_debugfs_exit [2022-11-23 16:04:07,023 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_hw_debugfs_exit [2022-11-23 16:04:07,023 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-23 16:04:07,023 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-23 16:04:07,024 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-23 16:04:07,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-23 16:04:07,025 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 16:04:07,026 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 16:04:07,026 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-23 16:04:07,033 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-23 16:04:07,033 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-23 16:04:07,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-23 16:04:07,034 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-23 16:04:07,034 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-23 16:04:07,034 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 16:04:07,034 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 16:04:07,034 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf5 [2022-11-23 16:04:07,034 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf5 [2022-11-23 16:04:07,034 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf6 [2022-11-23 16:04:07,035 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf6 [2022-11-23 16:04:07,035 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf7 [2022-11-23 16:04:07,035 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf7 [2022-11-23 16:04:07,035 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_rq_from_tag [2022-11-23 16:04:07,035 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_rq_from_tag [2022-11-23 16:04:07,035 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf1 [2022-11-23 16:04:07,036 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf1 [2022-11-23 16:04:07,036 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf2 [2022-11-23 16:04:07,036 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf2 [2022-11-23 16:04:07,036 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf3 [2022-11-23 16:04:07,036 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf3 [2022-11-23 16:04:07,036 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf4 [2022-11-23 16:04:07,037 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf4 [2022-11-23 16:04:07,037 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_workq_sdbf0 [2022-11-23 16:04:07,037 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_workq_sdbf0 [2022-11-23 16:04:07,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:04:07,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:04:07,037 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 16:04:07,038 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 16:04:07,038 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_put_int_command [2022-11-23 16:04:07,038 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_put_int_command [2022-11-23 16:04:07,038 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-23 16:04:07,038 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-23 16:04:07,038 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_hba_reset [2022-11-23 16:04:07,038 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_hba_reset [2022-11-23 16:04:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 16:04:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 16:04:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure bdput [2022-11-23 16:04:07,039 INFO L138 BoogieDeclarations]: Found implementation of procedure bdput [2022-11-23 16:04:07,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 16:04:07,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 16:04:07,040 INFO L130 BoogieDeclarations]: Found specification of procedure dmam_alloc_coherent [2022-11-23 16:04:07,040 INFO L138 BoogieDeclarations]: Found implementation of procedure dmam_alloc_coherent [2022-11-23 16:04:07,040 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_standby_immediate [2022-11-23 16:04:07,040 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_standby_immediate [2022-11-23 16:04:07,041 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-23 16:04:07,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~VOID [2022-11-23 16:04:07,041 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_get [2022-11-23 16:04:07,041 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_get [2022-11-23 16:04:07,041 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-23 16:04:07,041 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-23 16:04:07,042 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-23 16:04:07,042 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-23 16:04:07,042 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-23 16:04:07,042 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-23 16:04:07,042 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-23 16:04:07,042 INFO L130 BoogieDeclarations]: Found specification of procedure del_gendisk [2022-11-23 16:04:07,043 INFO L138 BoogieDeclarations]: Found implementation of procedure del_gendisk [2022-11-23 16:04:07,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 16:04:07,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 16:04:07,043 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-23 16:04:07,043 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-23 16:04:07,043 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_sectors [2022-11-23 16:04:07,044 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_sectors [2022-11-23 16:04:07,044 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-23 16:04:07,044 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-23 16:04:07,044 INFO L130 BoogieDeclarations]: Found specification of procedure drop_cpu [2022-11-23 16:04:07,044 INFO L138 BoogieDeclarations]: Found implementation of procedure drop_cpu [2022-11-23 16:04:07,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 16:04:07,044 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 16:04:07,045 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_disable_link_opts [2022-11-23 16:04:07,045 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_disable_link_opts [2022-11-23 16:04:07,045 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 16:04:07,045 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 16:04:07,045 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2022-11-23 16:04:07,045 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2022-11-23 16:04:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_cmd_from_tag [2022-11-23 16:04:07,046 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_cmd_from_tag [2022-11-23 16:04:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_pos [2022-11-23 16:04:07,046 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_pos [2022-11-23 16:04:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 16:04:07,046 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 16:04:07,047 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 16:04:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-23 16:04:07,047 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-23 16:04:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_rq_to_pdu [2022-11-23 16:04:07,047 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_rq_to_pdu [2022-11-23 16:04:07,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 16:04:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_7 [2022-11-23 16:04:07,048 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_7 [2022-11-23 16:04:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-23 16:04:07,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-23 16:04:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure exec_drive_taskfile [2022-11-23 16:04:07,048 INFO L138 BoogieDeclarations]: Found implementation of procedure exec_drive_taskfile [2022-11-23 16:04:07,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 16:04:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_init_port [2022-11-23 16:04:07,049 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_init_port [2022-11-23 16:04:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-23 16:04:07,049 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-23 16:04:07,049 INFO L130 BoogieDeclarations]: Found specification of procedure ida_remove [2022-11-23 16:04:07,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ida_remove [2022-11-23 16:04:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_restart_port [2022-11-23 16:04:07,050 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_restart_port [2022-11-23 16:04:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-23 16:04:07,050 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-23 16:04:07,050 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-23 16:04:07,050 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-23 16:04:07,051 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-23 16:04:07,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-23 16:04:07,051 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_start_stopped_hw_queues [2022-11-23 16:04:07,051 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_start_stopped_hw_queues [2022-11-23 16:04:07,051 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2022-11-23 16:04:07,051 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2022-11-23 16:04:07,051 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-11-23 16:04:07,052 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-11-23 16:04:07,052 INFO L130 BoogieDeclarations]: Found specification of procedure dmam_free_coherent [2022-11-23 16:04:07,052 INFO L138 BoogieDeclarations]: Found implementation of procedure dmam_free_coherent [2022-11-23 16:04:07,053 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_pci_remove [2022-11-23 16:04:07,057 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_pci_remove [2022-11-23 16:04:07,057 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_issue_ncq_command [2022-11-23 16:04:07,057 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_issue_ncq_command [2022-11-23 16:04:07,057 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_of_node [2022-11-23 16:04:07,058 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_of_node [2022-11-23 16:04:07,058 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 16:04:07,058 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 16:04:07,058 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_get_identify [2022-11-23 16:04:07,058 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_get_identify [2022-11-23 16:04:07,059 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 16:04:07,059 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 16:04:07,059 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-11-23 16:04:07,060 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-11-23 16:04:07,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 16:04:07,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 16:04:07,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 16:04:07,060 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_set_timeout [2022-11-23 16:04:07,060 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_set_timeout [2022-11-23 16:04:07,060 INFO L130 BoogieDeclarations]: Found specification of procedure irq_set_affinity_hint [2022-11-23 16:04:07,061 INFO L138 BoogieDeclarations]: Found implementation of procedure irq_set_affinity_hint [2022-11-23 16:04:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_pci_resume [2022-11-23 16:04:07,061 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_pci_resume [2022-11-23 16:04:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-23 16:04:07,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-23 16:04:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-23 16:04:07,061 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-23 16:04:07,062 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2022-11-23 16:04:07,062 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2022-11-23 16:04:07,062 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_put [2022-11-23 16:04:07,062 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_put [2022-11-23 16:04:07,062 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_pci_shutdown [2022-11-23 16:04:07,062 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_pci_shutdown [2022-11-23 16:04:07,063 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-23 16:04:07,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-23 16:04:07,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_9 [2022-11-23 16:04:07,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_9 [2022-11-23 16:04:07,063 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_device_reset [2022-11-23 16:04:07,063 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_device_reset [2022-11-23 16:04:07,063 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_enable_engine [2022-11-23 16:04:07,064 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_enable_engine [2022-11-23 16:04:07,064 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_7 [2022-11-23 16:04:07,064 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_7 [2022-11-23 16:04:07,064 INFO L130 BoogieDeclarations]: Found specification of procedure pcim_enable_device [2022-11-23 16:04:07,064 INFO L138 BoogieDeclarations]: Found implementation of procedure pcim_enable_device [2022-11-23 16:04:07,064 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-23 16:04:07,065 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-23 16:04:07,065 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_check_surprise_removal [2022-11-23 16:04:07,065 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_check_surprise_removal [2022-11-23 16:04:07,065 INFO L130 BoogieDeclarations]: Found specification of procedure devm_free_irq [2022-11-23 16:04:07,065 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_free_irq [2022-11-23 16:04:07,065 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-23 16:04:07,065 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-23 16:04:07,066 INFO L130 BoogieDeclarations]: Found specification of procedure blk_mq_end_request [2022-11-23 16:04:07,066 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_mq_end_request [2022-11-23 16:04:07,066 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-11-23 16:04:07,066 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-11-23 16:04:07,066 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 16:04:07,066 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 16:04:07,067 INFO L130 BoogieDeclarations]: Found specification of procedure no_llseek [2022-11-23 16:04:07,067 INFO L138 BoogieDeclarations]: Found implementation of procedure no_llseek [2022-11-23 16:04:07,067 INFO L130 BoogieDeclarations]: Found specification of procedure simple_open [2022-11-23 16:04:07,067 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_open [2022-11-23 16:04:07,067 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-23 16:04:07,067 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-23 16:04:07,067 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-23 16:04:07,068 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-23 16:04:07,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 16:04:07,068 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_dma_free [2022-11-23 16:04:07,068 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_dma_free [2022-11-23 16:04:07,068 INFO L130 BoogieDeclarations]: Found specification of procedure mtip_block_initialize [2022-11-23 16:04:07,068 INFO L138 BoogieDeclarations]: Found implementation of procedure mtip_block_initialize [2022-11-23 16:04:08,364 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:04:08,368 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:04:08,723 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 16:04:28,754 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:04:31,531 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:04:31,531 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 16:04:31,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:04:31 BoogieIcfgContainer [2022-11-23 16:04:31,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:04:31,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:04:31,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:04:31,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:04:31,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:04:01" (1/3) ... [2022-11-23 16:04:31,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14086790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:04:31, skipping insertion in model container [2022-11-23 16:04:31,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:04:05" (2/3) ... [2022-11-23 16:04:31,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14086790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:04:31, skipping insertion in model container [2022-11-23 16:04:31,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:04:31" (3/3) ... [2022-11-23 16:04:31,548 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--block--mtip32xx--mtip32xx.ko-entry_point.cil.out.i [2022-11-23 16:04:31,580 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:04:31,581 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 16:04:31,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:04:31,741 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;@64e5ab21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:04:31,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 16:04:31,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 2331 states, 1442 states have (on average 1.3432732316227463) internal successors, (1937), 1493 states have internal predecessors, (1937), 744 states have call successors, (744), 145 states have call predecessors, (744), 144 states have return successors, (727), 727 states have call predecessors, (727), 727 states have call successors, (727) [2022-11-23 16:04:31,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-11-23 16:04:31,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:31,802 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:04:31,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:04:31,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:31,809 INFO L85 PathProgramCache]: Analyzing trace with hash 141887832, now seen corresponding path program 1 times [2022-11-23 16:04:31,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:31,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074197781] [2022-11-23 16:04:31,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:31,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2817 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2817 trivial. 0 not checked. [2022-11-23 16:04:33,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:33,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074197781] [2022-11-23 16:04:33,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074197781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:33,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:33,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:04:33,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989586191] [2022-11-23 16:04:33,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:33,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:04:33,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:33,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:04:33,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:04:33,726 INFO L87 Difference]: Start difference. First operand has 2331 states, 1442 states have (on average 1.3432732316227463) internal successors, (1937), 1493 states have internal predecessors, (1937), 744 states have call successors, (744), 145 states have call predecessors, (744), 144 states have return successors, (727), 727 states have call predecessors, (727), 727 states have call successors, (727) Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2022-11-23 16:04:35,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:04:38,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:04:41,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:04:43,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:04:45,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:04:50,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:04:51,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:04:51,888 INFO L93 Difference]: Finished difference Result 6440 states and 9456 transitions. [2022-11-23 16:04:51,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:04:51,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 409 [2022-11-23 16:04:51,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:04:51,983 INFO L225 Difference]: With dead ends: 6440 [2022-11-23 16:04:51,983 INFO L226 Difference]: Without dead ends: 4129 [2022-11-23 16:04:52,012 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 [2022-11-23 16:04:52,019 INFO L413 NwaCegarLoop]: 3677 mSDtfsCounter, 2668 mSDsluCounter, 3084 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2678 SdHoareTripleChecker+Valid, 6761 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-11-23 16:04:52,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2678 Valid, 6761 Invalid, 629 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 623 Invalid, 5 Unknown, 0 Unchecked, 17.7s Time] [2022-11-23 16:04:52,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4129 states. [2022-11-23 16:04:52,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4129 to 4120. [2022-11-23 16:04:52,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4120 states, 2571 states have (on average 1.3321664721898094) internal successors, (3425), 2629 states have internal predecessors, (3425), 1270 states have call successors, (1270), 280 states have call predecessors, (1270), 278 states have return successors, (1272), 1265 states have call predecessors, (1272), 1269 states have call successors, (1272) [2022-11-23 16:04:52,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4120 states to 4120 states and 5967 transitions. [2022-11-23 16:04:52,567 INFO L78 Accepts]: Start accepts. Automaton has 4120 states and 5967 transitions. Word has length 409 [2022-11-23 16:04:52,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:04:52,570 INFO L495 AbstractCegarLoop]: Abstraction has 4120 states and 5967 transitions. [2022-11-23 16:04:52,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2022-11-23 16:04:52,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4120 states and 5967 transitions. [2022-11-23 16:04:52,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-11-23 16:04:52,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:04:52,590 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:04:52,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:04:52,590 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:04:52,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:04:52,591 INFO L85 PathProgramCache]: Analyzing trace with hash 380273048, now seen corresponding path program 1 times [2022-11-23 16:04:52,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:04:52,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062750122] [2022-11-23 16:04:52,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:04:52,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:04:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:04:53,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2817 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2817 trivial. 0 not checked. [2022-11-23 16:04:53,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:04:53,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062750122] [2022-11-23 16:04:53,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062750122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:04:53,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:04:53,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:04:53,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175118292] [2022-11-23 16:04:53,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:04:53,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:04:53,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:04:53,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:04:53,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:04:53,590 INFO L87 Difference]: Start difference. First operand 4120 states and 5967 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2022-11-23 16:04:55,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:04:57,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:00,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:02,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:03,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:06,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:10,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:10,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:10,727 INFO L93 Difference]: Finished difference Result 11797 states and 17045 transitions. [2022-11-23 16:05:10,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:05:10,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 413 [2022-11-23 16:05:10,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:10,791 INFO L225 Difference]: With dead ends: 11797 [2022-11-23 16:05:10,791 INFO L226 Difference]: Without dead ends: 7758 [2022-11-23 16:05:10,815 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 [2022-11-23 16:05:10,817 INFO L413 NwaCegarLoop]: 3657 mSDtfsCounter, 2739 mSDsluCounter, 2913 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2749 SdHoareTripleChecker+Valid, 6570 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:10,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2749 Valid, 6570 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 622 Invalid, 4 Unknown, 0 Unchecked, 16.6s Time] [2022-11-23 16:05:10,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7758 states. [2022-11-23 16:05:11,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7758 to 7740. [2022-11-23 16:05:11,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7740 states, 4839 states have (on average 1.3351932217400289) internal successors, (6461), 4951 states have internal predecessors, (6461), 2354 states have call successors, (2354), 548 states have call predecessors, (2354), 546 states have return successors, (2362), 2343 states have call predecessors, (2362), 2353 states have call successors, (2362) [2022-11-23 16:05:11,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7740 states to 7740 states and 11177 transitions. [2022-11-23 16:05:11,304 INFO L78 Accepts]: Start accepts. Automaton has 7740 states and 11177 transitions. Word has length 413 [2022-11-23 16:05:11,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:11,311 INFO L495 AbstractCegarLoop]: Abstraction has 7740 states and 11177 transitions. [2022-11-23 16:05:11,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2022-11-23 16:05:11,312 INFO L276 IsEmpty]: Start isEmpty. Operand 7740 states and 11177 transitions. [2022-11-23 16:05:11,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-23 16:05:11,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:11,325 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:05:11,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 16:05:11,326 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:11,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:11,338 INFO L85 PathProgramCache]: Analyzing trace with hash -677705738, now seen corresponding path program 1 times [2022-11-23 16:05:11,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:11,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448923424] [2022-11-23 16:05:11,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:11,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2817 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2817 trivial. 0 not checked. [2022-11-23 16:05:12,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:12,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448923424] [2022-11-23 16:05:12,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448923424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:12,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:05:12,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:05:12,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394315076] [2022-11-23 16:05:12,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:12,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:05:12,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:12,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:05:12,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:05:12,585 INFO L87 Difference]: Start difference. First operand 7740 states and 11177 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2022-11-23 16:05:14,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:16,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:19,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:21,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:24,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:28,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:29,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:29,040 INFO L93 Difference]: Finished difference Result 22419 states and 32311 transitions. [2022-11-23 16:05:29,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:05:29,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 414 [2022-11-23 16:05:29,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:29,143 INFO L225 Difference]: With dead ends: 22419 [2022-11-23 16:05:29,143 INFO L226 Difference]: Without dead ends: 14760 [2022-11-23 16:05:29,180 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 [2022-11-23 16:05:29,182 INFO L413 NwaCegarLoop]: 3675 mSDtfsCounter, 2548 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2558 SdHoareTripleChecker+Valid, 6703 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:29,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2558 Valid, 6703 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 632 Invalid, 6 Unknown, 0 Unchecked, 15.8s Time] [2022-11-23 16:05:29,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14760 states. [2022-11-23 16:05:29,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14760 to 14744. [2022-11-23 16:05:29,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14744 states, 9219 states have (on average 1.3360451242000217) internal successors, (12317), 9435 states have internal predecessors, (12317), 4448 states have call successors, (4448), 1078 states have call predecessors, (4448), 1076 states have return successors, (4468), 4429 states have call predecessors, (4468), 4447 states have call successors, (4468) [2022-11-23 16:05:30,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14744 states to 14744 states and 21233 transitions. [2022-11-23 16:05:30,019 INFO L78 Accepts]: Start accepts. Automaton has 14744 states and 21233 transitions. Word has length 414 [2022-11-23 16:05:30,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:30,021 INFO L495 AbstractCegarLoop]: Abstraction has 14744 states and 21233 transitions. [2022-11-23 16:05:30,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2022-11-23 16:05:30,022 INFO L276 IsEmpty]: Start isEmpty. Operand 14744 states and 21233 transitions. [2022-11-23 16:05:30,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2022-11-23 16:05:30,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:30,035 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 16, 16, 16, 16, 16, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:05:30,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 16:05:30,035 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:30,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:30,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1975542184, now seen corresponding path program 1 times [2022-11-23 16:05:30,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:30,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762807293] [2022-11-23 16:05:30,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:30,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2819 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2819 trivial. 0 not checked. [2022-11-23 16:05:31,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:31,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762807293] [2022-11-23 16:05:31,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762807293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:31,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:05:31,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:05:31,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204247776] [2022-11-23 16:05:31,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:31,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:05:31,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:31,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:05:31,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:05:31,079 INFO L87 Difference]: Start difference. First operand 14744 states and 21233 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-23 16:05:33,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:35,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:37,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:39,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:42,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:44,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:48,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:49,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:05:49,071 INFO L93 Difference]: Finished difference Result 36619 states and 52838 transitions. [2022-11-23 16:05:49,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:05:49,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 426 [2022-11-23 16:05:49,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:05:49,208 INFO L225 Difference]: With dead ends: 36619 [2022-11-23 16:05:49,209 INFO L226 Difference]: Without dead ends: 21956 [2022-11-23 16:05:49,291 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 [2022-11-23 16:05:49,296 INFO L413 NwaCegarLoop]: 3325 mSDtfsCounter, 1448 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 6323 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:05:49,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 6323 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 651 Invalid, 6 Unknown, 0 Unchecked, 17.3s Time] [2022-11-23 16:05:49,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21956 states. [2022-11-23 16:05:50,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21956 to 21924. [2022-11-23 16:05:50,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21924 states, 14015 states have (on average 1.3561897966464502) internal successors, (19007), 14306 states have internal predecessors, (19007), 6314 states have call successors, (6314), 1596 states have call predecessors, (6314), 1594 states have return successors, (6364), 6268 states have call predecessors, (6364), 6313 states have call successors, (6364) [2022-11-23 16:05:50,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21924 states to 21924 states and 31685 transitions. [2022-11-23 16:05:50,953 INFO L78 Accepts]: Start accepts. Automaton has 21924 states and 31685 transitions. Word has length 426 [2022-11-23 16:05:50,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:05:50,954 INFO L495 AbstractCegarLoop]: Abstraction has 21924 states and 31685 transitions. [2022-11-23 16:05:50,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-23 16:05:50,955 INFO L276 IsEmpty]: Start isEmpty. Operand 21924 states and 31685 transitions. [2022-11-23 16:05:50,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-11-23 16:05:50,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:05:50,967 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 16, 16, 16, 16, 16, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:05:50,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 16:05:50,968 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:05:50,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:05:50,969 INFO L85 PathProgramCache]: Analyzing trace with hash -789668879, now seen corresponding path program 1 times [2022-11-23 16:05:50,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:05:50,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422528075] [2022-11-23 16:05:50,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:05:50,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:05:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:05:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2819 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2819 trivial. 0 not checked. [2022-11-23 16:05:51,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:05:51,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422528075] [2022-11-23 16:05:51,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422528075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:05:51,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:05:51,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:05:51,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582003778] [2022-11-23 16:05:51,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:05:51,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:05:51,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:05:51,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:05:51,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:05:51,796 INFO L87 Difference]: Start difference. First operand 21924 states and 31685 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-23 16:05:53,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:56,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:05:58,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:01,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:03,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:06,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:09,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:10,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:06:10,350 INFO L93 Difference]: Finished difference Result 62125 states and 89409 transitions. [2022-11-23 16:06:10,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:06:10,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 445 [2022-11-23 16:06:10,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:06:10,597 INFO L225 Difference]: With dead ends: 62125 [2022-11-23 16:06:10,598 INFO L226 Difference]: Without dead ends: 40282 [2022-11-23 16:06:10,701 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 [2022-11-23 16:06:10,702 INFO L413 NwaCegarLoop]: 3724 mSDtfsCounter, 2387 mSDsluCounter, 3027 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2393 SdHoareTripleChecker+Valid, 6751 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:06:10,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2393 Valid, 6751 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 647 Invalid, 6 Unknown, 0 Unchecked, 17.2s Time] [2022-11-23 16:06:10,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40282 states. [2022-11-23 16:06:13,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40282 to 40265. [2022-11-23 16:06:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40265 states, 25674 states have (on average 1.3498480953493808) internal successors, (34656), 26237 states have internal predecessors, (34656), 11548 states have call successors, (11548), 3044 states have call predecessors, (11548), 3042 states have return successors, (11606), 11470 states have call predecessors, (11606), 11547 states have call successors, (11606) [2022-11-23 16:06:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40265 states to 40265 states and 57810 transitions. [2022-11-23 16:06:13,418 INFO L78 Accepts]: Start accepts. Automaton has 40265 states and 57810 transitions. Word has length 445 [2022-11-23 16:06:13,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:06:13,419 INFO L495 AbstractCegarLoop]: Abstraction has 40265 states and 57810 transitions. [2022-11-23 16:06:13,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-23 16:06:13,420 INFO L276 IsEmpty]: Start isEmpty. Operand 40265 states and 57810 transitions. [2022-11-23 16:06:13,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-11-23 16:06:13,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:06:13,430 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 17, 17, 17, 17, 17, 17, 17, 17, 17, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:06:13,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 16:06:13,431 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:06:13,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:06:13,431 INFO L85 PathProgramCache]: Analyzing trace with hash -357927819, now seen corresponding path program 1 times [2022-11-23 16:06:13,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:06:13,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350251266] [2022-11-23 16:06:13,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:06:13,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:06:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:06:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2987 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2981 trivial. 0 not checked. [2022-11-23 16:06:14,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:06:14,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350251266] [2022-11-23 16:06:14,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350251266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:06:14,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:06:14,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:06:14,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84536611] [2022-11-23 16:06:14,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:06:14,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:06:14,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:06:14,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:06:14,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:06:14,966 INFO L87 Difference]: Start difference. First operand 40265 states and 57810 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-23 16:06:17,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:19,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:22,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:25,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:27,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:31,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:31,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:06:31,863 INFO L93 Difference]: Finished difference Result 80451 states and 115503 transitions. [2022-11-23 16:06:31,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:06:31,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 486 [2022-11-23 16:06:31,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:06:32,112 INFO L225 Difference]: With dead ends: 80451 [2022-11-23 16:06:32,112 INFO L226 Difference]: Without dead ends: 40235 [2022-11-23 16:06:32,455 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 [2022-11-23 16:06:32,456 INFO L413 NwaCegarLoop]: 3038 mSDtfsCounter, 0 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6072 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-23 16:06:32,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6072 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 601 Invalid, 5 Unknown, 0 Unchecked, 15.6s Time] [2022-11-23 16:06:32,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40235 states. [2022-11-23 16:06:34,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40235 to 40155. [2022-11-23 16:06:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40155 states, 25580 states have (on average 1.349569976544175) internal successors, (34522), 26143 states have internal predecessors, (34522), 11540 states have call successors, (11540), 3036 states have call predecessors, (11540), 3034 states have return successors, (11598), 11454 states have call predecessors, (11598), 11539 states have call successors, (11598) [2022-11-23 16:06:35,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40155 states to 40155 states and 57660 transitions. [2022-11-23 16:06:35,164 INFO L78 Accepts]: Start accepts. Automaton has 40155 states and 57660 transitions. Word has length 486 [2022-11-23 16:06:35,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:06:35,166 INFO L495 AbstractCegarLoop]: Abstraction has 40155 states and 57660 transitions. [2022-11-23 16:06:35,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-23 16:06:35,166 INFO L276 IsEmpty]: Start isEmpty. Operand 40155 states and 57660 transitions. [2022-11-23 16:06:35,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2022-11-23 16:06:35,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:06:35,180 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 24, 24, 24, 22, 22, 22, 22, 22, 22, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:06:35,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 16:06:35,181 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:06:35,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:06:35,182 INFO L85 PathProgramCache]: Analyzing trace with hash 537750439, now seen corresponding path program 1 times [2022-11-23 16:06:35,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:06:35,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421186846] [2022-11-23 16:06:35,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:06:35,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:06:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:06:36,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4385 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4379 trivial. 0 not checked. [2022-11-23 16:06:36,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:06:36,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421186846] [2022-11-23 16:06:36,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421186846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:06:36,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:06:36,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 16:06:36,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189607944] [2022-11-23 16:06:36,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:06:36,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:06:36,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:06:36,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:06:36,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:06:36,875 INFO L87 Difference]: Start difference. First operand 40155 states and 57660 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-23 16:06:38,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:40,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:41,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:44,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:47,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:50,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:53,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:06:56,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:07:00,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:07:01,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:07:01,631 INFO L93 Difference]: Finished difference Result 80137 states and 115068 transitions. [2022-11-23 16:07:01,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:07:01,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 533 [2022-11-23 16:07:01,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:07:01,873 INFO L225 Difference]: With dead ends: 80137 [2022-11-23 16:07:01,874 INFO L226 Difference]: Without dead ends: 40031 [2022-11-23 16:07:02,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:07:02,058 INFO L413 NwaCegarLoop]: 3036 mSDtfsCounter, 1 mSDsluCounter, 6067 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9103 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:07:02,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 9103 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 905 Invalid, 6 Unknown, 0 Unchecked, 23.0s Time] [2022-11-23 16:07:02,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40031 states. [2022-11-23 16:07:04,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40031 to 40031. [2022-11-23 16:07:04,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40031 states, 25513 states have (on average 1.3492337239838514) internal successors, (34423), 26069 states have internal predecessors, (34423), 11491 states have call successors, (11491), 3028 states have call predecessors, (11491), 3026 states have return successors, (11549), 11412 states have call predecessors, (11549), 11490 states have call successors, (11549) [2022-11-23 16:07:04,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40031 states to 40031 states and 57463 transitions. [2022-11-23 16:07:04,697 INFO L78 Accepts]: Start accepts. Automaton has 40031 states and 57463 transitions. Word has length 533 [2022-11-23 16:07:04,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:07:04,698 INFO L495 AbstractCegarLoop]: Abstraction has 40031 states and 57463 transitions. [2022-11-23 16:07:04,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-23 16:07:04,699 INFO L276 IsEmpty]: Start isEmpty. Operand 40031 states and 57463 transitions. [2022-11-23 16:07:04,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2022-11-23 16:07:04,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:07:04,709 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 16, 16, 16, 16, 16, 16, 16, 16, 16, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:07:04,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 16:07:04,710 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:07:04,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:07:04,711 INFO L85 PathProgramCache]: Analyzing trace with hash 542084620, now seen corresponding path program 1 times [2022-11-23 16:07:04,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:07:04,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495811182] [2022-11-23 16:07:04,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:07:04,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:07:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:07:05,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2900 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2893 trivial. 0 not checked. [2022-11-23 16:07:05,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:07:05,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495811182] [2022-11-23 16:07:05,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495811182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:07:05,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:07:05,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:07:05,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883807759] [2022-11-23 16:07:05,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:07:05,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:07:05,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:07:05,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:07:05,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:07:05,905 INFO L87 Difference]: Start difference. First operand 40031 states and 57463 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-23 16:07:07,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:07:10,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:07:14,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:07:17,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:07:20,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:07:24,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:07:26,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:07:27,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:07:27,062 INFO L93 Difference]: Finished difference Result 113881 states and 163007 transitions. [2022-11-23 16:07:27,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:07:27,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 519 [2022-11-23 16:07:27,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:07:27,499 INFO L225 Difference]: With dead ends: 113881 [2022-11-23 16:07:27,499 INFO L226 Difference]: Without dead ends: 73931 [2022-11-23 16:07:27,687 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 [2022-11-23 16:07:27,688 INFO L413 NwaCegarLoop]: 4589 mSDtfsCounter, 2393 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2402 SdHoareTripleChecker+Valid, 7612 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2022-11-23 16:07:27,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2402 Valid, 7612 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 776 Invalid, 7 Unknown, 0 Unchecked, 18.6s Time] [2022-11-23 16:07:27,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73931 states. [2022-11-23 16:07:31,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73931 to 73912. [2022-11-23 16:07:31,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73912 states, 47168 states have (on average 1.351763907734057) internal successors, (63760), 48116 states have internal predecessors, (63760), 20865 states have call successors, (20865), 5880 states have call predecessors, (20865), 5878 states have return successors, (20987), 20738 states have call predecessors, (20987), 20864 states have call successors, (20987) [2022-11-23 16:07:31,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73912 states to 73912 states and 105612 transitions. [2022-11-23 16:07:31,719 INFO L78 Accepts]: Start accepts. Automaton has 73912 states and 105612 transitions. Word has length 519 [2022-11-23 16:07:31,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:07:31,725 INFO L495 AbstractCegarLoop]: Abstraction has 73912 states and 105612 transitions. [2022-11-23 16:07:31,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (62), 2 states have call predecessors, (62), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-23 16:07:31,725 INFO L276 IsEmpty]: Start isEmpty. Operand 73912 states and 105612 transitions. [2022-11-23 16:07:31,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2022-11-23 16:07:31,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:07:31,736 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 22, 22, 22, 22, 22, 22, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:07:31,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 16:07:31,736 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:07:31,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:07:31,737 INFO L85 PathProgramCache]: Analyzing trace with hash -814935393, now seen corresponding path program 1 times [2022-11-23 16:07:31,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:07:31,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853042727] [2022-11-23 16:07:31,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:07:31,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:07:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:07:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4625 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4619 trivial. 0 not checked. [2022-11-23 16:07:33,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:07:33,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853042727] [2022-11-23 16:07:33,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853042727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:07:33,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:07:33,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:07:33,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383658477] [2022-11-23 16:07:33,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:07:33,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:07:33,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:07:33,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:07:33,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:07:33,084 INFO L87 Difference]: Start difference. First operand 73912 states and 105612 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-23 16:07:35,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:07:37,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:07:43,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:07:46,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:07:49,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:07:53,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:07:54,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:07:54,376 INFO L93 Difference]: Finished difference Result 184138 states and 263114 transitions. [2022-11-23 16:07:54,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:07:54,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 565 [2022-11-23 16:07:54,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:07:54,913 INFO L225 Difference]: With dead ends: 184138 [2022-11-23 16:07:54,913 INFO L226 Difference]: Without dead ends: 110307 [2022-11-23 16:07:55,155 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 [2022-11-23 16:07:55,156 INFO L413 NwaCegarLoop]: 4387 mSDtfsCounter, 2624 mSDsluCounter, 3016 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 5 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2634 SdHoareTripleChecker+Valid, 7403 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:07:55,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2634 Valid, 7403 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 705 Invalid, 5 Unknown, 0 Unchecked, 17.0s Time] [2022-11-23 16:07:55,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110307 states. [2022-11-23 16:07:59,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110307 to 110288. [2022-11-23 16:07:59,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110288 states, 70456 states have (on average 1.3513398433064607) internal successors, (95210), 71876 states have internal predecessors, (95210), 31039 states have call successors, (31039), 8794 states have call predecessors, (31039), 8792 states have return successors, (31225), 30848 states have call predecessors, (31225), 31038 states have call successors, (31225) [2022-11-23 16:08:00,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110288 states to 110288 states and 157474 transitions. [2022-11-23 16:08:00,726 INFO L78 Accepts]: Start accepts. Automaton has 110288 states and 157474 transitions. Word has length 565 [2022-11-23 16:08:00,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:08:00,727 INFO L495 AbstractCegarLoop]: Abstraction has 110288 states and 157474 transitions. [2022-11-23 16:08:00,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-23 16:08:00,728 INFO L276 IsEmpty]: Start isEmpty. Operand 110288 states and 157474 transitions. [2022-11-23 16:08:00,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2022-11-23 16:08:00,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:08:00,740 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 25, 25, 25, 22, 22, 22, 22, 22, 22, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:08:00,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 16:08:00,741 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:08:00,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:08:00,742 INFO L85 PathProgramCache]: Analyzing trace with hash 610176863, now seen corresponding path program 1 times [2022-11-23 16:08:00,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:08:00,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902545260] [2022-11-23 16:08:00,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:08:00,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:08:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:08:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4625 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4619 trivial. 0 not checked. [2022-11-23 16:08:02,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:08:02,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902545260] [2022-11-23 16:08:02,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902545260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:08:02,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:08:02,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:08:02,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809592583] [2022-11-23 16:08:02,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:08:02,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:08:02,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:08:02,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:08:02,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:08:02,129 INFO L87 Difference]: Start difference. First operand 110288 states and 157474 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-23 16:08:04,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:08:06,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:08:13,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:08:16,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:08:18,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:08:21,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:08:25,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:08:26,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:08:26,824 INFO L93 Difference]: Finished difference Result 275207 states and 393035 transitions. [2022-11-23 16:08:26,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:08:26,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 569 [2022-11-23 16:08:26,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:08:27,925 INFO L225 Difference]: With dead ends: 275207 [2022-11-23 16:08:27,925 INFO L226 Difference]: Without dead ends: 165000 [2022-11-23 16:08:28,375 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 [2022-11-23 16:08:28,375 INFO L413 NwaCegarLoop]: 4064 mSDtfsCounter, 2637 mSDsluCounter, 3009 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 5 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2647 SdHoareTripleChecker+Valid, 7073 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:08:28,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2647 Valid, 7073 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 668 Invalid, 6 Unknown, 0 Unchecked, 18.1s Time] [2022-11-23 16:08:28,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165000 states.